0000894081 Air Transport Services Group, Inc. false --12-31 FY 2024 true true true true true In 2024, we did not identify any risks from cybersecurity threats, including as a result of any cybersecurity incidents, that have materially affected or that are reasonably likely to materially affect us, including our business strategy, results of operations and financial condition. However, the nature of potential cybersecurity risks and threats are uncertain, and any future incidents, outages or breaches may materially affect our business strategy, results of operations or financial condition. For additional discussion of potential risks regarding cybersecurity, please see the information contained in Risks Related to Business Interruptions and Cybersecurity Incidents in Part 1A of this Form 10-K. 1,245 1,065 20,000,000 20,000,000 75,000 75,000 0.01 0.01 150,000,000 150,000,000 65,888,047 65,888,047 65,240,961 65,240,961 1 4 2 3 3 3 5 3 10 10 20 12 11 12 10 5 7 3 7 1.25 http://fasb.org/us-gaap/2024#SecuredOvernightFinancingRateSofrMember 6 1 9 2 35 80 1 20 2020 2021 2022 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 3 3 12 0 7 false false false false Daily Monthly 00008940812024-01-012024-12-31 iso4217:USD 00008940812024-06-30 xbrli:shares 00008940812025-03-03 thunderdome:item 00008940812024-12-31 00008940812023-12-31 0000894081us-gaap:SeriesAPreferredStockMember2024-12-31 0000894081us-gaap:SeriesAPreferredStockMember2023-12-31 iso4217:USDxbrli:shares 00008940812023-01-012023-12-31 00008940812022-01-012022-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2024-01-012024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2024-01-012024-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-12-31 00008940812022-12-31 00008940812021-12-31 0000894081us-gaap:CommonStockMember2021-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2021-12-31 0000894081us-gaap:RetainedEarningsMember2021-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-31 0000894081us-gaap:CommonStockMember2022-01-012022-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2022-01-012022-12-31 0000894081us-gaap:RetainedEarningsMember2022-01-012022-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:CommonStockMember2021-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AdditionalPaidInCapitalMember2021-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2021-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2021-12-31 0000894081us-gaap:CommonStockMember2022-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2022-12-31 0000894081us-gaap:RetainedEarningsMember2022-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-31 0000894081us-gaap:CommonStockMember2023-01-012023-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2023-01-012023-12-31 0000894081us-gaap:RetainedEarningsMember2023-01-012023-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-31 0000894081us-gaap:CommonStockMember2023-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2023-12-31 0000894081us-gaap:RetainedEarningsMember2023-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-31 0000894081us-gaap:CommonStockMember2024-01-012024-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2024-01-012024-12-31 0000894081us-gaap:RetainedEarningsMember2024-01-012024-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-01-012024-12-31 0000894081us-gaap:CommonStockMember2024-12-31 0000894081us-gaap:AdditionalPaidInCapitalMember2024-12-31 0000894081us-gaap:RetainedEarningsMember2024-12-31 0000894081us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-12-31 utr:Y 0000894081us-gaap:FlightEquipmentMembersrt:MinimumMember2024-12-31 0000894081us-gaap:FlightEquipmentMembersrt:MaximumMember2024-12-31 0000894081atsg:GroundEquipmentMembersrt:MinimumMember2024-12-31 0000894081atsg:GroundEquipmentMembersrt:MaximumMember2024-12-31 0000894081atsg:LeaseholdImprovementsFacilitiesAndOfficeEquipmentMembersrt:MinimumMember2024-12-31 0000894081atsg:LeaseholdImprovementsFacilitiesAndOfficeEquipmentMembersrt:MaximumMember2024-12-31 0000894081us-gaap:ConvertibleDebtMember2021-12-31 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:ConvertibleDebtMember2022-01-01 0000894081us-gaap:ConvertibleDebtMember2022-01-01 0000894081srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2022-01-01 00008940812022-01-01 0000894081atsg:ConvertibleNotesMemberus-gaap:ConvertibleDebtMember2021-01-012021-12-31 xbrli:pure 0000894081atsg:ConvertibleNotesMemberus-gaap:ConvertibleDebtMember2021-12-31 0000894081atsg:CAMMember2022-12-31 0000894081atsg:ACMIServicesMember2022-12-31 0000894081us-gaap:AllOtherSegmentsMember2022-12-31 0000894081atsg:CAMMember2023-12-31 0000894081atsg:ACMIServicesMember2023-12-31 0000894081us-gaap:AllOtherSegmentsMember2023-12-31 0000894081atsg:CAMMember2024-12-31 0000894081atsg:ACMIServicesMember2024-12-31 0000894081us-gaap:AllOtherSegmentsMember2024-12-31 0000894081atsg:A321PrecisionConversionsLLCMember2024-12-31 0000894081atsg:GATelesisEngineServicesLLCMember2022-04-30 0000894081atsg:A321PrecisionConversionsLLCMember2024-01-012024-12-31 0000894081atsg:A321PrecisionConversionsLLCMember2022-01-012022-12-31 0000894081atsg:A321PrecisionConversionsLLCMember2023-01-012023-12-31 0000894081atsg:GATelesisEngineServicesLLCMember2024-01-012024-12-31 0000894081atsg:GATelesisEngineServicesLLCMember2023-01-012023-12-31 0000894081atsg:GATelesisEngineServicesLLCMember2022-01-012022-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DoDMember2024-01-012024-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DoDMember2023-01-012023-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DoDMember2022-01-012022-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:AmazonMember2024-01-012024-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:AmazonMember2023-01-012023-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:AmazonMember2022-01-012022-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DHLMember2024-01-012024-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DHLMember2023-01-012023-12-31 0000894081us-gaap:SalesRevenueNetMemberus-gaap:CustomerConcentrationRiskMemberatsg:DHLMember2022-01-012022-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:DoDMember2024-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:DoDMember2023-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:AmazonMember2024-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:AmazonMember2023-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:DHLMember2024-12-31 0000894081us-gaap:AccountsReceivableMemberus-gaap:CustomerConcentrationRiskMemberatsg:DHLMember2023-12-31 0000894081srt:B767Memberatsg:DHLMember2024-12-31 0000894081srt:B767200Memberatsg:DHLMember2024-12-31 0000894081srt:B767300Memberatsg:DHLMember2024-12-31 0000894081srt:B767Memberatsg:DHLMember2022-07-012022-09-30 0000894081srt:B767200Memberatsg:DHLMember2024-01-012024-12-31 0000894081srt:B767Memberatsg:ASIMember2024-12-31 0000894081srt:B767Memberatsg:ASIMember2024-01-012024-12-31 0000894081srt:B767300Memberatsg:ASIMember2018-12-222018-12-22 0000894081srt:B767200Memberatsg:ASIMember2018-12-22 0000894081srt:B767200Memberatsg:ASIMember2018-12-222018-12-22 0000894081srt:B767300Memberatsg:ASIMember2018-12-22 0000894081atsg:ASIMemberatsg:ATSAMember2018-12-222018-12-22 0000894081srt:B767300Member2020-12-31 0000894081srt:B767Member2020-12-31 0000894081atsg:The2018InvestmentAgreementWarrantsMemberatsg:AmazonMember2018-12-22 0000894081srt:B767300Member2020-05-29 0000894081srt:B767300Member2021-12-31 0000894081srt:B767300Member2020-05-292020-05-29 0000894081atsg:The2018InvestmentAgreementWarrantsMemberatsg:AmazonMember2020-05-29 0000894081srt:B767300Memberatsg:ATSAMember2024-05-06 0000894081atsg:The2024SubsequentWarrantMemberatsg:ATSAMember2024-05-06 0000894081atsg:The2024SubsequentWarrantMemberatsg:ATSAMemberus-gaap:ShareBasedCompensationAwardTrancheOneMember2024-05-06 0000894081atsg:ThirdSubsequentWarrantMemberatsg:AmazonMember2024-05-06 0000894081atsg:ThirdSubsequentWarrantMemberatsg:AmazonMemberus-gaap:ShareBasedCompensationAwardTrancheOneMember2024-05-06 0000894081atsg:AmazonMember2024-05-062024-05-06 0000894081atsg:ThirdSubsequentWarrantMemberatsg:AmazonMemberus-gaap:ShareBasedCompensationAwardTrancheTwoMember2024-05-06 0000894081atsg:The2016InvestmentAgreementWarrantsMember2024-05-06 0000894081atsg:The2016InvestmentAgreementWarrantsMember2020-10-01 0000894081atsg:The2016InvestmentAgreementWarrantsMember2020-05-29 0000894081atsg:WarrantsWithInvestmentAgreementMember2024-05-06 0000894081atsg:WarrantsWithInvestmentAgreementMember2024-05-062024-05-06 0000894081atsg:WarrantsAndSaleOptionsMember2024-12-31 0000894081atsg:WarrantsAndSaleOptionsMember2023-12-31 0000894081atsg:WarrantsAndSaleOptionsMember2024-01-012024-12-31 0000894081atsg:WarrantsAndSaleOptionsMember2023-01-012023-12-31 0000894081atsg:WarrantsAndSaleOptionsMember2022-01-012022-12-31 0000894081atsg:CommonStockWarrantsMember2023-12-31 0000894081atsg:CommonStockWarrantsMember2024-01-012024-12-31 0000894081atsg:AmazonMember2024-12-31 0000894081atsg:The2016InvestmentAgreementWarrantsMemberatsg:AmazonMembersrt:MaximumMember2016-03-08 0000894081atsg:AmazonMember2023-08-142023-08-14 0000894081atsg:The2016InvestmentAgreementWarrantsMemberatsg:AmazonMembersrt:MaximumMember2024-05-06 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:SaleOptionMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:SaleOptionMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:SaleOptionMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:SaleOptionMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081atsg:StockWarrantObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-31 0000894081us-gaap:FlightEquipmentMember2024-12-31 0000894081us-gaap:FlightEquipmentMember2023-12-31 0000894081atsg:GroundEquipmentMember2024-12-31 0000894081atsg:GroundEquipmentMember2023-12-31 0000894081atsg:LeaseholdImprovementsFacilitiesAndOfficeEquipmentMember2024-12-31 0000894081atsg:LeaseholdImprovementsFacilitiesAndOfficeEquipmentMember2023-12-31 0000894081atsg:AircraftModificationsAndProjectsInProgressMember2024-12-31 0000894081atsg:AircraftModificationsAndProjectsInProgressMember2023-12-31 0000894081us-gaap:FlightEquipmentMemberatsg:CAMMember2024-12-31 0000894081us-gaap:FlightEquipmentMemberatsg:CAMMember2023-12-31 0000894081us-gaap:RevolvingCreditFacilityMember2024-12-31 0000894081us-gaap:RevolvingCreditFacilityMember2023-12-31 0000894081us-gaap:SeniorNotesMember2024-12-31 0000894081us-gaap:SeniorNotesMember2023-12-31 0000894081us-gaap:ConvertibleDebtMember2024-12-31 0000894081us-gaap:ConvertibleDebtMember2023-12-31 0000894081us-gaap:NotesPayableOtherPayablesMember2024-12-31 0000894081us-gaap:NotesPayableOtherPayablesMember2023-12-31 0000894081us-gaap:RevolvingCreditFacilityMemberatsg:SeniorCreditAgreementMember2024-12-31 0000894081us-gaap:RevolvingCreditFacilityMemberatsg:SeniorCreditAgreementMember2024-01-012024-12-31 0000894081us-gaap:RevolvingCreditFacilityMemberatsg:IrishFacilityMember2024-12-31 0000894081us-gaap:LetterOfCreditMemberatsg:IrishFacilityMember2024-12-31 0000894081atsg:ConvertibleSeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2023-08-14 00008940812023-08-142023-08-14 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2023-08-14 0000894081atsg:SeniorUnsecuredNotesMemberus-gaap:SeniorNotesMember2020-01-28 0000894081atsg:SeniorUnsecuredNotesMemberus-gaap:SeniorNotesMember2021-04-13 0000894081atsg:SeniorUnsecuredNotesMemberus-gaap:SeniorNotesMember2021-04-012021-06-30 0000894081atsg:SeniorUnsecuredNotesMemberus-gaap:SeniorNotesMember2024-12-31 0000894081atsg:SeniorUnsecuredNotesMemberus-gaap:SeniorNotesMember2023-12-31 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2017-09-30 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2017-09-012017-09-30 iso4217:USDthunderdome:item 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2023-08-142023-08-14 0000894081atsg:WarrantsMember2024-12-31 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2023-12-31 0000894081atsg:ConvertibleSeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2023-12-31 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-01-012024-12-31 0000894081atsg:ConvertibleSeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2024-01-012024-12-31 0000894081us-gaap:ConvertibleDebtMember2024-01-012024-12-31 0000894081atsg:ConvertibleSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-12-31 0000894081atsg:ConvertibleSeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2024-12-31 0000894081atsg:InterestRateSwap3793Member2024-12-31 0000894081atsg:InterestRateSwap3793Member2023-12-31 0000894081atsg:InterestRateSwap3836Member2024-12-31 0000894081atsg:InterestRateSwap3836Member2023-12-31 0000894081atsg:InterestRateSwap4257Member2024-12-31 0000894081atsg:InterestRateSwap4257Member2023-12-31 0000894081atsg:InterestRateSwap4185Member2024-12-31 0000894081atsg:InterestRateSwap4185Member2023-12-31 0000894081atsg:AircraftLeasedFromExternalCustomersMember2024-12-31 utr:M 0000894081atsg:PropertyLeasesMembersrt:MinimumMember2024-12-31 0000894081atsg:PropertyLeasesMembersrt:MaximumMember2024-12-31 0000894081atsg:AircraftProvidedByCustomersMember2024-12-31 0000894081atsg:AircraftProvidedByCustomersMember2023-12-31 0000894081srt:B767300Member2024-12-31 0000894081atsg:A321200Member2024-12-31 0000894081srt:A330Member2024-12-31 0000894081atsg:HangarFoamDischargeMember2024-01-012024-12-31 0000894081atsg:HangarFoamDischargeMember2023-01-012023-12-31 0000894081atsg:HangarFoamDischargeMember2022-01-012022-12-31 0000894081atsg:HangarFoamDischargeMember2024-12-31 0000894081atsg:HangarFoamDischargeMember2023-12-31 0000894081atsg:ABXAirlineMemberatsg:InternationalBrotherhoodOfTeamstersMember2024-12-31 0000894081atsg:ATIAirlineMemberatsg:AirLinePilotsAssociationMember2024-12-31 0000894081atsg:OAIAirlineMemberatsg:InternationalBrotherhoodOfTeamstersMember2024-12-31 0000894081atsg:ATIAirlineMemberatsg:AssociationOfFlightAttendantsMember2024-12-31 0000894081atsg:OAIAirlineMemberatsg:AssociationOfFlightAttendantsMember2024-12-31 0000894081atsg:OAIAirlineMemberatsg:TransportWorkersUnionOfAmericaMember2024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2023-12-012023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMember2022-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-12-31 0000894081us-gaap:DefinedBenefitPostretirementHealthCoverageMember2024-01-012024-12-31 0000894081us-gaap:DefinedBenefitPostretirementHealthCoverageMember2023-01-012023-12-31 0000894081us-gaap:DefinedBenefitPostretirementHealthCoverageMember2022-01-012022-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2022-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2022-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2024-01-012024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2023-01-012023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:CrewmemberMember2022-01-012022-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2024-01-012024-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2023-01-012023-12-31 0000894081us-gaap:PensionPlansDefinedBenefitMemberatsg:NonCrewmemberMember2022-01-012022-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberatsg:PilotMember2024-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberatsg:PilotMember2023-12-31 0000894081us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberatsg:PilotMember2022-12-31 0000894081us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2023-12-31 0000894081us-gaap:DefinedBenefitPlanEquitySecuritiesMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-31 0000894081us-gaap:FixedIncomeFundsMember2024-12-31 0000894081us-gaap:FixedIncomeFundsMember2023-12-31 0000894081us-gaap:DefinedBenefitPlanEquitySecuritiesMembersrt:MinimumMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanEquitySecuritiesMembersrt:MaximumMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanDebtSecurityMembersrt:MinimumMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanDebtSecurityMembersrt:MaximumMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanCashMembersrt:MinimumMember2024-12-31 0000894081us-gaap:DefinedBenefitPlanCashMembersrt:MaximumMember2024-12-31 0000894081atsg:FixedIncomeSecuritiesAnySingleIssuerMembersrt:MaximumMember2024-12-31 0000894081atsg:EquitySecuritiesAnySingleIssuerMembersrt:MaximumMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:MutualFundMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FixedIncomeInvestmentsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueInputsLevel2Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:PensionPlansDefinedBenefitMember2024-01-012024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2024-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-31 0000894081atsg:CommonTrustFundsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-31 0000894081atsg:CapitalAccumulationPlansMember2024-01-012024-12-31 0000894081atsg:CapitalAccumulationPlansMember2023-01-012023-12-31 0000894081atsg:CapitalAccumulationPlansMember2022-01-012022-12-31 0000894081us-gaap:DomesticCountryMember2024-12-31 0000894081us-gaap:StateAndLocalJurisdictionMember2024-12-31 0000894081us-gaap:StateAndLocalJurisdictionMembersrt:MinimumMember2024-01-012024-12-31 0000894081us-gaap:StateAndLocalJurisdictionMembersrt:MaximumMember2024-01-012024-12-31 0000894081us-gaap:DomesticCountryMember2024-01-012024-12-31 0000894081us-gaap:StateAndLocalJurisdictionMember2024-01-012024-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2021-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2021-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2022-01-012022-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2022-01-012022-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2022-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2022-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2023-01-012023-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2023-01-012023-12-31 0000894081atsg:PlanSettlementMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-12-31 0000894081atsg:PlanSettlementMemberatsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2023-01-012023-12-31 0000894081atsg:PlanSettlementMemberus-gaap:AccumulatedTranslationAdjustmentMember2023-01-012023-12-31 0000894081atsg:PlanSettlementMemberus-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2023-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2023-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2024-01-012024-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2024-01-012024-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2024-01-012024-12-31 0000894081us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2024-12-31 0000894081atsg:AccumulatedDefinedBenefitPostRetirementPlansAdjustmentAttributableToParentMember2024-12-31 0000894081us-gaap:AccumulatedTranslationAdjustmentMember2024-12-31 0000894081us-gaap:RestrictedStockMember2024-01-012024-12-31 0000894081atsg:StockUnitsMember2024-01-012024-12-31 0000894081atsg:TimeBasedAwardsMembersrt:DirectorMember2024-01-012024-12-31 0000894081atsg:RestrictedStockAndTimebasedAwardMember2024-01-012024-12-31 0000894081atsg:RestrictedStockAndTimebasedAwardMember2023-01-012023-12-31 0000894081atsg:RestrictedStockAndTimebasedAwardMember2022-01-012022-12-31 0000894081atsg:MarketConditionAwardMember2024-01-012024-12-31 0000894081atsg:MarketConditionAwardMember2023-01-012023-12-31 0000894081atsg:MarketConditionAwardMember2022-01-012022-12-31 0000894081atsg:MarketConditionAwardMembersrt:DirectorMember2024-01-012024-12-31 0000894081us-gaap:RestrictedStockMember2023-01-012023-12-31 0000894081us-gaap:RestrictedStockMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:CAMMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:ACMIServicesMember2024-01-012024-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableExternalRevenueMember2024-01-012024-12-31 0000894081atsg:BillableExternalRevenueMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:CAMMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:ACMIServicesMember2024-01-012024-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableInternalRevenueMember2024-01-012024-12-31 0000894081atsg:BillableInternalRevenueMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:CAMMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:ACMIServicesMember2024-01-012024-12-31 0000894081atsg:CustomerIncentivesMember2024-01-012024-12-31 0000894081us-gaap:IntersegmentEliminationMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2024-01-012024-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2024-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:CAMMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:ACMIServicesMember2023-01-012023-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableExternalRevenueMember2023-01-012023-12-31 0000894081atsg:BillableExternalRevenueMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:CAMMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:ACMIServicesMember2023-01-012023-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableInternalRevenueMember2023-01-012023-12-31 0000894081atsg:BillableInternalRevenueMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:CAMMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:ACMIServicesMember2023-01-012023-12-31 0000894081atsg:CustomerIncentivesMember2023-01-012023-12-31 0000894081us-gaap:IntersegmentEliminationMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2023-01-012023-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2023-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:CAMMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableExternalRevenueMemberatsg:ACMIServicesMember2022-01-012022-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableExternalRevenueMember2022-01-012022-12-31 0000894081atsg:BillableExternalRevenueMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:CAMMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:BillableInternalRevenueMemberatsg:ACMIServicesMember2022-01-012022-12-31 0000894081us-gaap:MaterialReconcilingItemsMemberatsg:BillableInternalRevenueMember2022-01-012022-12-31 0000894081atsg:BillableInternalRevenueMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:CAMMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CustomerIncentivesMemberatsg:ACMIServicesMember2022-01-012022-12-31 0000894081atsg:CustomerIncentivesMember2022-01-012022-12-31 0000894081us-gaap:IntersegmentEliminationMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2022-01-012022-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:CAMMember2022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:ACMIServicesMember2022-12-31 0000894081us-gaap:MaterialReconcilingItemsMember2022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:AircraftMaintenanceModificationsAndPartSalesMemberus-gaap:AllOtherSegmentsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:AircraftMaintenanceModificationsAndPartSalesMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:AircraftMaintenanceModificationsAndPartSalesMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:GroundServicesMemberus-gaap:AllOtherSegmentsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:GroundServicesMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:GroundServicesMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:OtherIncludingAviationFuelSalesMemberus-gaap:AllOtherSegmentsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:OtherIncludingAviationFuelSalesMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberatsg:OtherIncludingAviationFuelSalesMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-31 0000894081us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMember2024-01-012024-12-31 0000894081us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-31 0000894081us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:CAMMember2024-01-012024-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:CAMMember2023-01-012023-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:CAMMember2022-01-012022-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:ACMIServicesMember2024-01-012024-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:ACMIServicesMember2023-01-012023-12-31 0000894081atsg:NonLeaseActivitiesMemberatsg:ACMIServicesMember2022-01-012022-12-31 0000894081atsg:AircraftLeasesMember2024-01-012024-12-31 0000894081atsg:AircraftLeasesMember2023-01-012023-12-31 0000894081atsg:AircraftLeasesMember2022-01-012022-12-31 0000894081atsg:StonepeakNileMember2024-11-03 0000894081atsg:StonepeakNileMembersrt:ScenarioForecastMember2025-05-03 0000894081atsg:StonepeakNileMemberatsg:MergerAgreementIfAllClosingConditionsHaveBeenSatisfiedMember2024-11-03 0000894081us-gaap:SeniorNotesMemberus-gaap:SubsequentEventMember2025-02-03 0000894081us-gaap:SeniorNotesMemberus-gaap:SubsequentEventMember2025-02-012025-02-03 0000894081atsg:StonepeakNileMember2024-01-012024-12-31 00008940812024-10-012024-12-31 0000894081us-gaap:AllowanceForCreditLossMember2023-12-31 0000894081us-gaap:AllowanceForCreditLossMember2024-01-012024-12-31 0000894081us-gaap:AllowanceForCreditLossMember2024-12-31 0000894081us-gaap:AllowanceForCreditLossMember2022-12-31 0000894081us-gaap:AllowanceForCreditLossMember2023-01-012023-12-31 0000894081us-gaap:AllowanceForCreditLossMember2021-12-31 0000894081us-gaap:AllowanceForCreditLossMember2022-01-012022-12-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2024

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________ to ________

Commission file number 000-50368

Air Transport Services Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware			26-1631624

State or other jurisdiction of incorporation or organization			(I.R.S. Employer Identification No.)

145 Hunter Drive, Wilmington, OH 45177

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: 937-382-5591

Securities registered pursuant to Section 12(b) of the Act:

Title of each class			Trading Symbol			Name of each exchange on which registered
Common Stock, par value $0.01 per share			ATSG			The Nasdaq Stock Market LLC

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer

☒

Accelerated filer

☐

Smaller reporting company

☐

Non-accelerated filer

☐

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Table of Contents

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒

The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, as of the last business day of the registrant’s most recently completed second fiscal quarter: $619,722,308.

As of March 3, 2025, there were 65,890,477 shares of the registrant’s common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's definitive Proxy Statement for the Annual Meeting of Stockholders, expected to be filed no later than 120 days after the close of the registrant's 2024 fiscal year, or otherwise provided by amendment to this Form 10-K, are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent provided herein.

Table of Contents

CAUTIONARY NOTE REGARDING FORWARD LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 (“Act”) provides a safe harbor for forward-looking statements to encourage companies to provide prospective information, so long as those statements are identified as forward-looking and are accompanied by meaningful cautionary statements identifying important factors that could cause actual results to differ materially from those discussed in the statements. The Company wishes to take advantage of the safe harbor provisions of the Act.

This Annual Report on Form 10-K (the “Form 10-K”), including “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 7, contains forward-looking statements, within the meaning of the Act. Except for historical information contained in this Form 10-K, the matters discussed herein contain forward-looking statements that involve inherent risks and uncertainties. Such statements are provided under the “safe harbor” protection of the Act. Forward-looking statements are not statements of historical facts but are based on management’s current beliefs, assumptions and expectations regarding our future performance, taking into account the information currently available to management. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and levels of assets under management, technological developments, economic trends, expected transactions and similar matters. Forward-looking statements usually can be identified by the use of words such as “goal,” “objective,” “plan,” “expect,” “anticipate,” “intend,” “project,” “believe,” “estimate,” “may,” “target,” “guidance,” “forecast,” “outlook,” “could,” “will,” “continue,” “likely,” “should,” “hope,” “seek,” “would,” or other words of similar meaning. In addition, any statements that refer to projections of financial items, anticipated growth, future growth and revenues, future economic conditions and performance, plans, objectives and strategies for future operations, expectations, or other characterizations of future events or circumstances are forward-looking statements. Forward-looking statements provide our current expectations or forecasts of future events, results, circumstances or aspirations. We may also make forward-looking statements in our other documents filed or furnished with the SEC and in oral presentations. Forward-looking statements are based on assumptions and by their nature are subject to risks and uncertainties, many of which are outside of our control. Our actual results may differ materially from those set forth in our forward-looking statements. There is no assurance that any list of risks and uncertainties or risk factors is complete. Factors that could cause actual results to differ materially from those described in our forward-looking statements include, but are not limited to those discussed under the heading “Risk Factors” herein.

A number of important factors may cause the Company’s actual results to differ materially from those indicated by such forward-looking statements. These factors include, but are not limited to: (i) unplanned changes in the market demand for the Company's assets and services, including the loss of customers or a reduction in the level of services it performs for customers; (ii) the ability of the Company's operating airlines to maintain on-time service and control costs; (iii) the cost and timing with respect to which the Company is able to purchase and modify aircraft to a cargo configuration; (iv) fluctuations in the Company’s traded share price and in interest rates, which may result in mark-to-market charges on certain financial instruments; (v) the number, timing, and scheduled routes of the Company's aircraft deployments to customers; (vi) the Company's ability to remain in compliance with key agreements with customers, lenders and government agencies; (vii) unplanned cost of aircraft modification commitments and the impact of supply chain constraints both within and outside the United States, which may be more severe or persist longer than currently expected; (viii) the impact of the current competitive labor market, which could restrict its ability to fill key positions; (ix) changes in general economic or industry-specific conditions, including inflation and regulatory changes; and (x) other uncontrollable factors such as the impact of geopolitical tensions or conflicts, cybersecurity threats and human health crises. Other factors that could cause the Company’s actual results to differ materially from those indicated by such forward-looking statements are discussed under “Risk Factors” in Item 1A to this Form 10-K and are contained from time to time in the Company’s other filings with the U.S. Securities and Exchange Commission ("SEC"), including its annual reports on Form 10-K and quarterly reports on Form 10-Q.

Table of Contents

On November 3, 2024, Air Transport Services Group, Inc. (“ATSG”) entered into an Agreement and Plan of Merger with Stonepeak Nile Parent LLC ("Parent") and Stonepeak Nile MergerCo Inc. ("MergerCo") (the “Merger”), as discussed in Note P to the condensed consolidated financial statements included with this Form 10-K. Statements regarding the Merger, including the expected time period to consummate the Merger, the anticipated benefits (including synergies) of the Merger and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends, are also provided under the “safe harbor” protection in the Act. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Merger, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Merger; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the risk that the anticipated tax treatment of the Merger is not obtained; the risk that the parties may not be able to satisfy the conditions to the Merger in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Merger; the risk that any announcements relating to the Merger could have adverse effects on the market price of ATSG's common stock; the risk that the Merger and its announcement could have an adverse effect on the parties’ business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on its operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the impact of litigation relating to the Merger instituted against the Company and its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Merger which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company’s control.

Readers should carefully review this Form 10-K and should not place undue reliance on the Company’s forward-looking statements. The forward-looking statements were based only on information, plans and estimates as of the date of this Form 10-K. New risks and uncertainties arise from time to time, and factors that the Company currently deems immaterial may become material, and it is impossible for the Company to predict these events or how they may affect it. Except as may be required by applicable law, the Company undertakes no obligation to update any forward-looking statements to reflect changes in underlying assumptions or factors, new information, future events or other changes. The Company does not endorse any projections regarding future performance that may be made by third parties.

CERTAIN DEFINED TERMS IN THIS FORM 10-K

ATSG and its subsidiaries may sometimes be referred to in this Form 10-K individually or collectively as the “Company,” “we,” “our,” or “us.” ATSG’s outstanding common stock, par value $0.01 per share, is referred to in this Form 10-K as “common stock,” “common shares,” “stock” or “shares.”

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

2024 FORM 10-K ANNUAL REPORT

TABLE OF CONTENTS

		Page
PART I
Item 1.	Business	1
Item 1A.	Risk Factors	14
Item 1B.	Unresolved Staff Comments	29
Item 1C.	Cybersecurity	29
Item 2.	Properties	30
Item 3.	Legal Proceedings	31
Item 4.	Mine Safety Disclosures	31

PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	32
Item 6.	[Reserved]	34
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	34
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	49
Item 8.	Financial Statements and Supplementary Data	50
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	88
Item 9A.	Controls and Procedures	88
Item 9B.	Other Information	90
Item 9C.	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	90

PART III
Item 10.	Directors, Executive Officers and Corporate Governance	90
Item 11.	Executive Compensation	90
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	90
Item 13.	Certain Relationships and Related Transactions, and Director Independence	90
Item 14.	Principal Accountant Fees and Services	90

PART IV
Item 15.	Exhibit and Financial Statement Schedules	91
Item 16.	Form 10-K Summary	98
SIGNATURES		99

Table of Contents

PART I

ITEM 1. BUSINESS

Company Overview

We are the world’s largest lessor of freighter aircraft and provider of air cargo transportation and related services to blue-chip companies and organizations. We own the largest fleet of Boeing 767 converted freighters, a highly attractive aircraft for e-commerce package delivery networks, and have secured additional feedstock to support future demand. We are a critical partner to our customers that are under contracts for up to 10 years, which often provides us with high visibility into our future earnings and cash flows. We provide best-in-class reliable services through our teams of dedicated professionals, who value our customers, deliver on our promises, and contribute to sustainable development. As of December 31, 2024, our total fleet comprised 167 aircraft, including 33 externally sourced aircraft, and passenger aircraft, supported by over 4,700 employees.

We primarily operate through two reportable segments: Cargo Aircraft Management, Inc. ("CAM"), which includes the leasing of aircraft and aircraft engines, and ACMI Services (aircraft, crew, maintenance and insurance), which includes the cargo and passenger aircraft flight operations of our three airlines. Our other business operations, which primarily provide support services to the transportation industry, ranging from flight and ground operations to aircraft maintenance, repair and overhaul services, do not constitute reportable segments.

For 45 years, our subsidiaries have been providing airlift, ground operations, and maintenance services to the air transportation industry. Originally incorporated in 1980, ABX Air Inc ("ABX") was reorganized in 2007 into a holding company structure with ABX becoming a wholly-owned subsidiary of ATSG. Between 1980 and August 2003, ABX was a subsidiary of Airborne, Inc., a former publicly traded integrated delivery service provider. In August 2003, DHL Worldwide Express B.V. acquired the ground operations of Airborne, Inc., and in conjunction with the acquisition, ABX was separated from Airborne, Inc. and became an independent public company. Thereafter, in 2007, ATSG acquired the businesses of Cargo Holdings International, Inc. which included Air Transport International, Inc. ("ATI"). In 2018, ATSG acquired Omni Air International, LLC ("OAI"). ATSG is a Delaware corporation and headquartered at the Wilmington Air Park in Wilmington, Ohio.

As described in Note P to the accompanying consolidated financial statements, on November 3, 2024, ATSG entered into an Agreement and Plan of Merger (the "Merger Agreement") with Parent and MergerCo, pursuant to which, subject to the terms and conditions thereof, MergerCo will be merged with and into ATSG, with ATSG surviving the Merger (with its subsidiaries) as a wholly owned subsidiary of Parent upon closing of the Merger, which is anticipated to occur in the first half of 2025. ATSG's stockholders approved the Merger on February 10, 2025. Consummation of the Merger is subject to various other approvals including approval by the U.S Department of Transportation ("DOT") and other customary closing conditions. If the Merger is consummated, ATSG's securities will be delisted from the Nasdaq Stock Market LLC as soon as practicable following the Effective Time (as defined in Note P to the accompanying consolidated financial statements), and the Company will become a privately held company. The Company has incurred and expects to incur certain costs relating to the proposed Merger, such as financial, advisory, legal, accounting and other professional services fees.

Strategy

CAM is our primary business segment. Through CAM we acquire used medium wide-body and narrow-body passenger aircraft, manage their conversion into a freighter configuration and then lease the converted freighters to customers primarily under long-term contracts. We leverage our airline operating experience to acquire aircraft suitable for conversion and preparing these aircraft for reliable deployment. The medium wide-body aircraft we target for conversion are ideal for express and e-commerce driven regional air networks as they can be deployed more economically than larger capacity aircraft, newly built aircraft or other competing alternatives.

Our CAM business is complemented by our ACMI Services segment and other operations. We offer our ACMI Services under primarily long-term contracts to generate incremental returns beyond our leasing revenues and maximize asset utilization. In addition to flying, we offer ancillary services, such as aircraft maintenance and modifications, engine leases and sort and gateway operations that can further entrench us with our customers and encourage re-leasing and contract renewals.

Table of Contents

Services

Our business development and marketing efforts leverage the entire portfolio of our capabilities to create a customized bundled solution to meet our customers' needs. Our ability to offer our customers differentiated services, including aircraft leasing, airline express operations, aircraft line and heavy maintenance, and ground handling services makes us unique from other providers in our industry.

CAM

We own and lease aircraft through our subsidiary, CAM. We acquire used passenger aircraft, typically 15-20 years old, and cause them to be converted to a freighter configuration. Following conversion, we lease those aircraft externally under long-term contracts to a customer base that includes Amazon.com Services, LLC (“ASI”), DHL Network Operations (USA), Inc. and its affiliates (collectively, “DHL”), and other airlines, as well as internally to our own airline subsidiaries, typically for lease terms of up to five to ten years.

Our freighter fleet is composed primarily of Boeing 767 aircraft, which are desirable in regional air networks because of their reliability, cubic cargo capacity and efficient performance. We have agreements with two Boeing 767 aircraft conversion providers, Israel Aerospace Industries ("IAI") and The Boeing Company ("Boeing"), to convert additional Boeing aircraft.

We have also entered into an agreement with Elbe Flugzeugwerke (“EFW”) for conversion by EFW of Airbus A330 passenger aircraft to a freighter configuration. The first two aircraft freighter conversions are expected to be completed in the first quarter of 2025. The Airbus A330 aircraft can provide capabilities similar to the Boeing 767 for medium wide-body airlift with additional space and greater range. We have the right to 28 additional modification slots at EFW.

Through a joint venture with Precision Aircraft Solutions, LLC, we have developed a design for the conversion of Airbus A321 passenger aircraft into a freighter configuration and in 2021 were granted a Supplemental Type Certificate (“STC”) for such design. An STC is granted by the Federal Aviation Administration ("FAA") and European Aviation Safety Agency ("EASA") and represents an ownership right, similar to an intellectual property right, which authorizes the alteration of an airframe, engine or component (Boeing and IAI also have the necessary STCs for conversion of our Boeing aircraft). The converted Airbus A321 freighter is well suited for air-express service and e-commerce fulfillment over shorter routes with smaller payloads than the Boeing 767. The Airbus A321 can operate with greater fuel efficiency than the comparable freighter aircraft variants of the Boeing 737 and Boeing 757.

Under a typical lease arrangement, the customer maintains the aircraft in airworthy condition at its own cost. At the end of the lease term, the customer is typically required to return the aircraft in approximately the same maintenance condition that existed at the inception of the lease, as measured by airframe and engine time and cycles since the last scheduled maintenance event. CAM examines the creditworthiness of potential customers, their short and long-term growth prospects, their financial condition and backing, the experience of their management, and the impact of governmental regulations when determining the lease rate that is offered to the customer. In addition, CAM monitors the customer’s business and financial status throughout the term of the lease. From time to time, customers may request early termination of their leases, and we remain flexible to re-lease aircraft or arrange for their sale in order to manage our fleet.

ACMI Services

Our ACMI Services business segment consists of the cargo and passenger operations of our three airline subsidiaries: ABX, ATI, and OAI. Each of these airlines is independently certificated by the United States Department of Transportation ("DOT") and the FAA and is a "Part 121" airline.

A typical operating agreement for airline services requires us to supply a combination of aircraft, crew, maintenance and/or insurance for specified transportation operations. These services are commonly referred to as ACMI, CMI or charter services depending on the selection of services contracted by the customer as further described below. The customer bears the responsibility for capacity utilization and unit pricing in all cases.

ACMI - Our airline provides the aircraft, flight crews, aircraft maintenance and aircraft hull and liability insurance while the customer is typically responsible for substantially all other aircraft operating expenses, including fuel, landing fees, parking fees and ground and cargo handling expenses.

CMI - The customer is responsible for providing the aircraft, in addition to the fuel and other operating expenses. Our airline provides the flight crews, aircraft hull and liability insurance and, typically, aircraft line maintenance as needed between network flights.

Table of Contents

Charter - Our airline is responsible for providing full service, including fuel, aircraft, flight crews, maintenance, aircraft hull and liability insurance, landing fees, parking fees, catering, passenger handling fees, ground and cargo handling expenses and other operating expenses for a fixed, all-inclusive price.

The majority of the aircraft operated by our airlines are owned by CAM. These aircraft are either leased directly to a third-party customer or leased to one of our airlines. The following is a summary of our airlines:

ABX

ABX operates Boeing 767 aircraft exclusively in freighter configuration. ABX specializes in providing aircraft operations to customers in e-commerce and express delivery, with DHL and ASI as its largest customers.

ATI

ATI operates Boeing 767 freighter aircraft and Boeing 757 aircraft, the latter of which are commonly referred to as “combi” aircraft, which means they are capable of simultaneously carrying passengers and cargo containers on the main flight deck. ATI operates its fleet of Boeing 767 aircraft primarily for the express package industry and freight forwarders, with ASI as its largest customer. It operates its fleet of Boeing 757 “combi” aircraft primarily for the United States Department of Defense ("DoD").

OAI

OAI operates Boeing 767 and Boeing 777 passenger aircraft. OAI carries passengers worldwide for a variety of private sector customers, the DoD and other governmental agencies. OAI provides contract flying to the DoD and U.S. government agencies typically under mutli-year, government contract provisions. It provides tailored passenger and government charter services, airline startup and route development services.

ABX, ATI and OAI are each participants in the Civil Reserve Air Fleet (“CRAF”), a National Emergency Preparedness Program designed to augment the airlift capability of the DoD and to meet the national security interests and contingency requirements of the U.S. Transportation Command (“USTC”). The combined efforts of our airlines make us the nation’s largest provider of passenger charter service to DoD and other governmental agencies.

Support Services

In addition to our two reportable segments, we provide a wide range of air transportation related services to our customers, including aircraft maintenance and modification, ground support and crew training.

Aircraft Maintenance and Modification

Our aircraft maintenance and modification services, which are provided primarily by our subsidiary Airborne Maintenance and Engineering Services, Inc. (“AMES”) and its Pemco World Air Services, Inc. subsidiary ("Pemco"), provide airframe modification and heavy maintenance, component repairs, engineering services and aircraft line maintenance. Another subsidiary, AMES Material Services, Inc., resells and brokers aircraft parts. AMES and Pemco are certified by the FAA under Part 145 of the Federal Aviation Regulations ("FARs"). Pemco performs passenger-to-freighter and passenger-to-combi conversions for certain Boeing series aircraft and passenger-to-freighter conversions for Airbus A321 aircraft using the STC we have developed with our joint venture. Both AMES and Pemco own many STCs and similar approvals issued by the FAA, which are marketed to our customers.

Ground Support

Through our subsidiary LGSTX Services Inc. ("LGSTX"), we provide labor and management for cargo load transfer and sorting; the design, installation and maintenance of material handling equipment; the leasing and maintenance of ground support equipment; and general facilities maintenance. LGSTX also resells aviation fuel at the air park in Wilmington, Ohio.

Crew Training

Our support services also involve the training of flight crews, which we offer through our subsidiary Airborne Training Services, Inc. ("ATS"). ATS is certificated under Part 142 of the FARs to offer flight crew training to customers. ATS also offers Boeing 757 and Boeing 767 flight simulators which can be rented by customers for use in conjunction with their flight training programs.

Table of Contents

Major Customers

We have long-standing strategic customer relationships with ASI, the DoD, and DHL, described below. Additionally, we have a broad range of customers across end markets and geographies that rely on the aircraft we lease to them and the services we provide.

Amazon/ASI

We have been providing aircraft, flight operations, cargo handling and logistics support services to ASI, a subsidiary of Amazon.com, Inc. ("Amazon"), since September 2015. On March 8, 2016, we entered into an Air Transportation Services Agreement (as amended, the “ATSA”) with ASI pursuant to which we lease Boeing 767 freighter aircraft to ASI through CAM, operate these aircraft and additional aircraft provided by ASI via our airline subsidiaries and are responsible for complying with FAA airworthiness directives, the cost of Boeing 767 airframe maintenance and, for the aircraft leased to ASI that we operate, certain engine maintenance events. We also provide ground handling services through our subsidiaries. Under the ATSA, which has been amended multiple times, we operate aircraft based on pre-defined fees scaled for the number of aircraft hours flown, aircraft scheduled and flight crews provided to ASI for its network. On May 6, 2024, we entered into a 3rd Amended & Restated ATSA with ASI to operate ten additional Boeing 767-300 freighters through May 2029, with extension rights for an additional five years subject to mutual agreement. All ten of those Boeing 767-300 freighters were in operation by November 30, 2024. Revenues from our commercial arrangements with ASI comprised approximately 33% of our consolidated revenues for 2024. As of December 31, 2024, we were leasing 30 of CAM's Boeing 767 freighter aircraft to ASI under multi-year contracts. We operate all of these aircraft, including the additional 21 ASI-provided aircraft, under the CMI provisions of the ATSA.

In conjunction with the execution of the ATSA and its amendments, the Company and ASI entered into an Investment Agreement (the "2016 Investment Agreement") and a Stockholders' Agreement on March 8, 2016 and a second Investment Agreement on December 20, 2018 (the "2018 Investment Agreement"). Pursuant to the 2016 and 2018 Investment Agreements, we issued warrants to Amazon in conjunction with aircraft leases. For additional information about the warrants issued under the 2016 and 2018 Investment Agreements, see Note C to the Consolidated Financial Statements.

U.S. Department of Defense

We have been providing services to the DoD since the 1990s. Our business with the DoD and other government agencies expanded significantly as a result of our November 2018 acquisition of OAI. For 2024, the DoD comprised 29% of our consolidated revenues.

Our participation in the CRAF Program allows our airlines to operate military charters for passenger and cargo transportation. Our airlines provide charter operations to the Air Mobility Command ("AMC") through contracts awarded by the USTC, both of which are organized under the DoD. The CRAF Program permits the DoD to utilize the airlines' aircraft pledged to the Program during national emergencies when the need for military airlift exceeds the availability of military aircraft.

The USTC secures airlift capacity through fixed awards, which are awarded annually or on another periodic basis and for "expansion routes," which are awarded on a quarterly, monthly and as-needed basis. Under the applicable contracts, we are responsible for all operating expenses including fuel, landing and ground handling expenses. We receive reimbursements from the USTC each month if the price of fuel paid by us for the flights exceeds a previously set peg price. If the price of fuel paid by us is less than the peg price, then we pay the difference to the USTC. Airlines may participate in CRAF either independently, or through teaming arrangements with other airlines. Our airlines are members of the Patriot Team of CRAF airlines. We pay a commission to the Patriot Team, based on certain revenues we receive under USTC contracts.

ATI operates its unique fleet of four Boeing 757 "combi" aircraft under contract with the USTC. ATI has been operating combi aircraft for the DoD since 1993. OAI has been operating aircraft for the DoD since 1995.

Table of Contents

DHL

We have provided aircraft services to DHL under multi-year contracts since August 2003. For 2024, DHL accounted for 14% of our consolidated revenues. As of December 31, 2024, we were leasing 14 of our Boeing 767 freighter aircraft to DHL under multi-year contracts. We operate ten of these aircraft for DHL under a separate CMI agreement with DHL, along with six DHL-supplied freighter aircraft. We operate and maintain the aircraft based on pre-defined fees scaled for the number of aircraft hours flown, aircraft scheduled and flight crews provided to DHL for its network. Under the pricing structure of the DHL CMI agreement, we are responsible for complying with FAA airworthiness directives, the cost of Boeing 767 airframe maintenance and, for the aircraft leased to DHL that we operate, certain engine maintenance events. We also provide ground equipment and maintenance services to DHL in the U.S. In February 2022, DHL agreed to a six-year extension of the DHL CMI agreement through April 2028. Further, in the second half of 2022, we began to operate another four Boeing 767 aircraft provided by DHL under an additional CMI agreement which currently runs through August 2027.

Competitive Conditions

The competitive landscape varies among our businesses. Competition for aircraft lease placements is generally affected by aircraft type, aircraft availability and lease rates. The aircraft in our fleet provide cost-effective air transportation for medium range requirements. We target our leases to cargo airlines and delivery companies seeking medium widebody and narrow-body aircraft. Competitors in the aircraft leasing industry include AerCap Holdings N.V., Air Lease Corporation and Altavair Aviation Leasing, among others.

In the air transportation industry, the primary competitive factors are operating costs, fuel efficiency, geographic coverage, aircraft range, aircraft reliability and capacity. The cost of airline operations is significantly impacted by the cost of flight crewmembers, which can vary among airlines depending on their collective bargaining agreements. Competitors in the air transportation industry include Amerijet International, Inc., Atlas Air, Inc., Kalitta Air LLC, Northern Air Cargo, LLC, National Air Cargo Group, Inc., 21 Air, LLC and Western Global Airlines, LLC. Of these, Atlas Air, Inc. and National Air Cargo Group, Inc. (operating as National Airlines) also operate passenger aircraft as does Eastern Airlines, LLC. Cargo airlines also compete for cargo volumes with passenger airlines that have substantial belly cargo capacity.

The aircraft maintenance industry is labor intensive and typically competes based on cost, capabilities and reputation for quality. U.S. airlines may contract for aircraft maintenance with maintenance and repair organizations ("MROs") in other countries or geographies with a lower labor wage base, making the industry highly cost competitive. Other aircraft MROs include AAR Corp and Hong Kong Aircraft Engineering Co.

Overall, demand for air cargo transportation services correlates closely with general economic conditions and the level of commercial activity in a geographic area. Stronger general economic conditions and growth in a region typically increase the need for air transportation. E-commerce growth is a strong indicator of growth in the express and network flying businesses which we enable with our assets and services. Historically, the cargo industry has experienced higher volumes during the fourth calendar quarter of each year due to increased shipments during the holiday season. Generally, time-critical delivery needs, such as just-in-time inventory management, increase the demand for air cargo delivery, while higher costs of aviation fuel generally reduce the demand for air delivery services. When aviation fuel prices increase, shippers will consider using ground transportation if the delivery time allows.

Human Capital Resources

Workforce

As of December 31, 2024, our workforce was composed of 4,745 full-time and part-time employees. We employed approximately 1,120 flight crewmembers, 360 flight attendants, 245 flight support personnel, 1,935 aircraft maintenance managers and technicians, 540 employees for ground equipment and logistics services, 45 employees for sales and marketing and 500 employees for administrative functions. In addition to full-time and part-time employees, we often engage contractors and temporary employees to assist in aircraft line maintenance and package sortation during peak operational times. On December 31, 2023, we had approximately 5,095 full-time and part-time employees. Over 99% of our workforce is based in the United States.

Table of Contents

The table below summarizes the representation of our unionized employees at December 31, 2024.

			Contract	Percentage of
		Employee	Amendable	the Company’s
Airline	Labor Agreement Unit	Type	Date	Employees
ABX	International Brotherhood of Teamsters	Flight Crew	1/2/2030	6.3	%
ATI	Air Line Pilots Association	Flight Crew	3/21/2021	10.8	%
OAI	International Brotherhood of Teamsters	Flight Crew	4/1/2021	6.6	%
ATI	Association of Flight Attendants	Flight Attendant	11/14/2023	0.8	%
OAI	Association of Flight Attendants	Flight Attendant	12/1/2021	6.8	%
OAI	Transport Workers Union of America	Dispatchers	1/7/2028	0.3	%

Under the Railway Labor Act, as amended (“RLA”), crewmember labor agreements do not expire, so the existing contract remains in effect throughout any negotiation process. If required, mediation under the RLA is conducted by the National Mediation Board ("NMB"), which has the sole discretion as to how long mediation can last and when it will end. In addition to direct negotiations and mediation, the RLA includes a provision for potential arbitration of unresolved issues and a 30-day “cooling-off” period before either party can resort to self-help, including, but not limited to, any work stoppage.

Objectives and Measures

Our employees are critical to our ongoing success. Our approach to managing human capital includes maintaining the health and safety of our employees; attracting and retaining skilled individuals; continually improving the skills of our workforce; promoting inclusive and engaging work environments; and compensating and treating all employees fairly. We believe that every person deserves an equally respectful work environment regardless of race, ethnicity, capability, age, gender, or sexual orientation. We work to maintain a culture of inclusion for all employees.

To attract and retain skilled employees, we offer competitive compensation and benefits, including medical care, paid time off, retirement savings, mental health counseling and other employee benefits. Further, we are committed to training and supporting our employees' continuous development of professional, technical and management skills. We develop technical training programs which facilitate the licensure and certification of flight crews, aviation mechanics and other skilled jobs. We partner with third parties to assist employees in developing leadership skills and we value diversity in our workforce.

Our airline operations rely on flight crews, aircraft maintenance technicians and flight support personnel. We rely on a skilled workforce to perform aircraft maintenance. Similarly, we staff personnel near airports to sort customer packages, load aircraft and maintain related equipment. The job-safety of these employee is paramount to us. We maintain safety programs across all of our subsidiaries. We encourage our employees to take precautions and always place their own safety first.

Flight crewmembers are required to be licensed in accordance with FARs, with specific ratings for the aircraft type to be flown, and to be medically certified as physically fit to operate aircraft. Licenses and medical certifications are subject to recurrent requirements as set forth in the FARs, to include recurrent training and minimum amounts of recent flying experience.

The FAA requires initial and recurrent training for most flight and maintenance personnel. Quality control inspectors must also be licensed and qualified to perform maintenance inspections on Company-operated and maintained aircraft. The majority of our aircraft mechanics have one or more FAA licenses. Our subsidiaries pay for all of the required recurrent training and provide training for their ground service personnel as well. Their training programs have received all required FAA approvals. Similarly, our flight dispatchers and flight followers receive FAA approved training on the airlines' requirements and specific aircraft.

Table of Contents

Information About Our Executive Officers

The following table sets forth information about the Company’s executive officers, including each officer's age as of March 3, 2025.

Name	Age	Information

Joseph C. Hete	70	Executive Chairman, ATSG (since June 2024). Mr. Hete has held the position of Executive Chairman since June 2024. Mr. Hete held the positions of Chairman of the Board from May 2020 to June 2024 and Chief Executive Officer from November 2023 to June 2024, following service in that role from October 2007 to May 2020. Mr. Hete also previously served as the President of ATSG from October 2007 to September 2019 and beginning in August 2003 as President (until February 2008) and Chief Executive Officer (until May 2020) of ABX (as predecessor to ATSG). Mr. Hete’s other prior roles with the Company’s businesses include: the Chief Operating Officer of ABX from January 2000 to August 2003; the Senior Vice President, Chief Operating Officer, of ABX from January 1997 until January 2000; the Senior Vice President, Administration, of ABX from 1991 to 1997; and Vice President, Administration, of ABX from 1986 to 1991. He joined ABX in 1980 and has been a director of ATSG since it became publicly traded in 2003.
Michael L. Berger	63	Chief Executive Officer, ATSG (since June 2024). Mr. Berger has held the position of Chief Executive Officer of ATSG since June 2024. Mr. Berger served as President, ATSG, from October 2023 to June 2024, prior to which he was ATSG’s Chief Strategy Officer beginning in December 2022. Mr. Berger was the Chief Commercial Officer of ATSG from March 2018 to December 2022 and President of the Company’s subsidiary Airborne Global Solutions from May 2018 to December 2022. Before joining ATSG, Mr. Berger was Chief Commercial Officer for Dicom Transportation Group of Canada, a multimodal transport company providing parcel, freight and logistics services, from March 2017 through February 2018. Mr. Berger was Global Head of Sales for TNT Express, an international courier delivery services company based in Amsterdam from September 2014 through February 2017. Mr. Berger joined Airborne Express, the Company’s former parent company, in 1986 and worked 28 years for Airborne Express and its successor, DHL Express, where he held many roles including Head of Sales for the United States.

Quint O. Turner

Chief Financial Officer, ATSG (since February 2008) and Chief Financial Officer, ABX (since December 2004).

Mr. Turner has held the position of Chief Financial Officer of ATSG since February 2008 and Chief Financial Officer of ABX since December 2004. Mr. Turner was Vice President of Administration of ABX from February 2002 to December 2004. Mr. Turner was Corporate Director of Financial Planning and Accounting of ABX from 1997 to 2002. Prior to 1997, Mr. Turner held the positions of Manager of Planning and Director of Financial Planning of ABX. Mr. Turner joined ABX in 1988.

Table of Contents

Jeffrey A. Dominick

President, ATSG (since June 2024).

Mr. Dominick has held the position of President of ATSG since June 2024. Prior to his appointment as the President of ATSG, Mr. Dominick had been a director of ATSG since November 2022 (he previously served on the Board from 2008 to 2012). Prior to joining the Company, Mr. Dominick also served as a Managing Partner of AirWheel Investments L.P., a private equity fund founded in 2015 that invests in the commercial aviation sector, a position he held from March 2020 to June 2024. From April 2015 through November 2019, he was a Principal and the CIO of Propeller Investments LLC, the developer of Paine Field Airport in Everett, Washington. Mr. Dominick was a Managing Director at Blackrock, Inc. from September 2012 through April 2015. Prior to his tenure at Blackrock, Inc., he was the Managing Director and Head of Non-Correlated Investments for Babson Capital Management LLC, a wholly owned subsidiary of the MassMutual Financial Group, from November 2010 to September 2012, and also worked in private equity for MassMutual Capital Partners from 2007 through 2010. Prior to joining MassMutual Financial Group in 2002, Mr. Dominick spent 13 years in leveraged finance and debt capital markets for Deutsche Bank and its predecessor Bankers Trust, and Chase Manhattan Bank N.A.

Edward J. Koharik

Chief Operating Officer, ATSG (since September 2019).

Mr. Koharik has held the position of Chief Operating Officer of ATSG since September 2019. Before joining ATSG, Mr. Koharik served as Senior Vice President of FlightSafety International, a global provider of flight training for commercial and military aviation professionals and flight simulation equipment (“FlightSafety”), where he was employed from October 2015 to September 2019. Other roles with FlightSafety included Vice President as well as Executive Director and General Manager of the Visual Systems division. Prior to FlightSafety, he served 23 years in the United States Air Force, including as a squadron commander, a Senior Service Fellow at the Naval Post Graduate School, and staff assignments at Air Mobility Command, with his final military assignment as the Enterprise Readiness Center Chief for the US Transportation Command from 2011 to 2015.

W. Joseph Payne

Chief Legal Officer & Secretary, ATSG (since May 2016); Vice President, General Counsel and Secretary, ABX (since January 2004).

Mr. Payne has held the position of Chief Legal Officer & Secretary of ATSG since May 2016 and Vice President, General Counsel and Secretary of ABX since January 2004. Mr. Payne was Senior Vice President, Corporate General Counsel and Secretary of ATSG from February 2008 to May 2016, Corporate Secretary/Counsel of ABX from January 1999 to January 2004, and Assistant Corporate Secretary of ABX from July 1996 to January 1999. Mr. Payne joined ABX in April 1995, prior to which he was engaged in the private practice of law.

C. Todd France

Chief Commercial Officer, ATSG (since August 2024).

Mr. France has held the position of Chief Commercial Officer of ATSG since August 2024 and President of CAM since January 2022. Mr. France has been employed by us since 2002. Prior to his service as President of CAM, he served as President of AMES from February 2020 to March 2022. Prior to these roles, he held other key positions at AMES, including General Manager, Vice President of Business Development, Director of Business Development, and Director of Business Operations. Before transferring to AMES in 2009, Mr. France worked for ABX as Senior Director of Ground Operations, Senior Director of Regional Hub Operations, and Regional Hub Manager.

Table of Contents

The executive officers of the Company are appointed annually, usually in May, and serve at the pleasure of the Board of Directors of ATSG (the "Board"). There are no family relationships between any directors or executive officers of the Company.

Information Systems

We depend on technology to conduct our daily operations including data processing, communications and regulatory compliance. We rely on critical computerized systems for aircraft maintenance records, flight planning, crew scheduling, employee training, financial records, cybersecurity and other processes. We utilize information systems to maintain records about the maintenance status and history of each major aircraft component, as required by FAA regulations. Using our information systems, we track aircraft maintenance schedules and also control inventories and maintenance tasks, including the work directives of personnel performing those tasks. We rely on information systems to track crewmember flight and duty times, and crewmember training status. Our flight operations systems coordinate flight schedules and crew schedules. We invest significant time and financial resources to acquire, develop and maintain information systems to facilitate our operations. Our information technology infrastructure includes cybersecurity measures, backup procedures and redundancy capabilities.

We rely increasingly on software applications, hosted technologies, data transmissions and cybersecurity safeguards provided by or in conjunction with third parties. The costs of technology and related services, including cybersecurity costs in response to ever evolving threats, continue to increase. To remain competitive, we must continue to deploy new technologies cost effectively while maintaining regulatory compliance and security safeguards.

Sustainability

We are committed to integrating sustainability practices into our operations. We have formalized governance and oversight of our sustainability initiatives through a Management Sustainability Committee, which provides reports to the ATSG Board of Directors (the "Board"), with the Nominating and Governance Committee of the Board responsible to review and assess the Company's significant policies relating to sustainability and to evaluate the Company's related performance. The Management Sustainability Committee, which is composed of (i) the respective presidents of each of ATSG's operating subsidiaries; (ii) the Vice President, Human Capital, the Vice President, Controller, the Vice President, Corporate Development, and the Manager, Internal Audit of ATSG; (iii) a representative from each of the ATSG Information Technology Department, the OAI Information Technology Department, the ATSG Communications Department, and the ATSG Legal Department; and (iv) other officers and employees as determined by from to time by the President and Chief Executive Officer of ATSG, focuses on creating long-term stockholder value through strategic goals and initiatives for environmental, social and governance ("ESG") management. The Management Sustainability Committee seeks opportunities to improve employee health and safety, support corporate social responsibility, enhance diversity and inclusion and coordinate activities related to stakeholder engagement and philanthropy. The Management Sustainability Committee reports to the ATSG Leadership Council, which is composed of the Chief Executive Officer, President, Chief Operating Officer, Chief Financial Officer, Chief Legal Officer and Chief Commercial Officer of ATSG, and provides updates to the Nominating and Governance Committee.

We have published a Sustainability Report since 2022 describing our environmental sustainability actions and initiatives as well as our efforts to create a more diverse and inclusive workplace and the contributions made to our surrounding communities. The disclosures contained in the Sustainability Report and other voluntary disclosures regarding environmental, social, and governance matters are responsive to various areas of stakeholder interests. We use our Annual Report on Form 10-K and other filings with the SEC to disclose any items that are material or that we otherwise consider to be responsive to SEC rules.

Regulation

Our subsidiaries’ airline operations are primarily regulated by the DOT, the FAA, and the U.S. Transportation Security Administration ("TSA"). Those operations must comply with numerous economic, safety, security and environmental laws, ordinances and regulations. In addition, they must comply with various other federal, state, local and foreign laws and regulations. We are committed to promoting an organizational culture that encourages ethical conduct and a commitment to compliance with the law. Each of our primary businesses maintains a compliance committee to monitor and maintain compliance with applicable laws and regulations, with the support of our internal audit function.

Table of Contents

Environment

The U.S. Environmental Protection Agency ("EPA") is authorized to regulate aircraft emissions and has historically implemented emissions control standards adopted by the International Civil Aviation Organization ("ICAO"). In 2016, the EPA issued a finding on greenhouse gas ("GHG") emissions from aircraft and its relationship to air pollution. This finding is a regulatory prerequisite to the EPA’s adoption of a new certification standard for aircraft emissions. In January 2021, the EPA issued a final rule regarding GHG emissions standards for new aircraft engines consistent with ICAO standards that were adopted in 2017. The EPA final rule does not apply to engines on aircraft that are already in service, as is also the case with the ICAO standards. The EPA standards have been challenged by several states and environmental organizations and we cannot predict the outcome of legal challenges to the EPA’s final rules or the EPA’s position with respect to such rules under the Trump administration. Our subsidiaries’ aircraft meet all currently applicable requirements for engine emission levels.

Related to the EPA GHG finding, in February 2024 the FAA issued its final rule on fuel efficiency standards which, as finalized, applies, inter alia, to in-service aircraft types certificated before 2021 but modified post-2023 after the aircraft was issued an airworthiness certificate, such as the Boeing 767 aircraft type. Even if the final rule is interpreted as applicable to a number of our airline subsidiaries’ Boeing 767 converted freighter aircraft, the impact on our operations, financial position, and results of operations is expected to be minimal.

Under the Clean Air Act, individual states or the EPA may also adopt regulations requiring reductions in emissions for one or more localities based on the measured air quality at such localities. These regulations may seek to limit or restrict emissions by restricting the use of emission-producing ground service equipment or aircraft auxiliary power units. Further, the U.S. Congress has, in the past, considered legislation that would regulate GHG emissions. While some form of federal climate change legislation is possible in the future, the Trump administration is expected to disfavor climate change legislation and under the Trump administration, the EPA, FAA and other federal agencies may seek to modify, rescind or withdraw, or change their approach to implementation and enforcement of, rules and guidance relating to climate change and GHG emissions. We are unable at this time to determine the effect of future regulatory changes relating to climate change and GHG emissions on our operations, financial position or results of operations.

In addition, the European Commission has approved the extension of the European Union Emissions Trading Scheme ("ETS") for GHG emissions to the airline industry. Currently, under the European Union’s ETS, all ABX, ATI and OAI flights that are wholly within the European Union are covered by the ETS requirements, and each year our airlines are required to submit emission allowances in an amount equal to the carbon dioxide emissions from such flights. If the airline's flight activity during the year produces carbon emissions exceeding the number of carbon emissions allowances that it had been awarded, the airline must acquire allowances from other airlines in the open market. Our airlines operate intra-EU flights from time to time and management believes that such flights are operated in compliance with ETS requirements.

In September 2023, the EU Parliament approved sustainable aviation fuels (SAF) mandates for EU aviation that establish the amounts of SAF to be uploaded by airlines including U.S. carriers at EU airports beginning in January 2025. The mandates apply to U.S. cargo airlines that operated at least one weekly flight in the prior annual reporting period. The SAF mandate starts at 2% of all aviation fuels used in the EU in 2025; stepping up to 6% by 2030; and 63% by 2050. As noted, the Company’s airline subsidiaries are all capable of using SAF in their operations from EU airports although the availability of sufficient SAF to meet EU mandates is uncertain at this time.

Similarly, in 2016, the ICAO formally adopted a resolution adopting the Carbon Offsetting and Reduction Scheme for International Aviation (“CORSIA”), which is a global, market-based emissions offset program to encourage carbon-neutral growth beyond 2020. A pilot phase began in 2021 in which countries may voluntarily participate, followed by a first phase of the program beginning in 2024 that is also voluntary, and full mandatory participation is scheduled to begin in 2027. The United States has agreed to participate in the two voluntary phases. ICAO continues to develop details regarding implementation, but compliance with CORSIA will increase our operating costs, although the total impact on revenue and our overall financial position remains uncertain.

The Trump administration has issued an executive order directing the U.S. to withdraw from the Paris climate accord, an agreement among 196 countries to reduce GHG emissions. The impact of the U.S. exiting the Paris climate accord on future U.S. policy regarding GHG emissions, on CORSIA and on other GHG regulation, and any resulting effects on our financial position and results of operations, is uncertain.

Table of Contents

The U.S. government generally regulates aircraft engine noise at its source. However, local airport operators may, under certain circumstances, regulate airport operations based on aircraft noise considerations. The Airport Noise and Capacity Act of 1990 provides that, in the case of Stage 3 aircraft (all of our operating aircraft satisfy Stage 3 noise compliance requirements), an airport operator must obtain the carriers’ consent to, or the government’s approval of, the rule prior to its adoption. We believe the operation of our airline subsidiaries’ aircraft either complies with or is exempt from compliance with currently applicable local airport rules. However, some airport authorities have adopted local noise regulations, and, to the extent more stringent aircraft operating regulations are adopted on a widespread basis, our airline subsidiaries may be required to spend substantial funds, make schedule changes or take other actions to comply with such local rules.

Department of Transportation

The DOT maintains authority over certain aspects of domestic and international air transportation serving the United States, such as consumer protection, accommodation of passengers with disabilities, requiring a minimum level of insurance and the requirement that a company be “fit” to hold a certificate to engage in air transportation. In addition, the DOT continues to regulate many aspects of international aviation, including the award of certain international routes. In regard to our business:

●

The DOT has issued to ABX a Domestic All-Cargo Air Service Certificate for air cargo transportation between all points within the U.S., the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.

●

The DOT has issued to ATI certificate authority to engage in scheduled interstate air transportation, which is currently limited to all-cargo operations. ATI's DOT certificate authority also authorizes it to engage in interstate and foreign charter air transportation of persons, property and mail.

●

The DOT has issued to ABX and ATI Certificates of Public Convenience and Necessity authorizing each of them to engage in scheduled foreign air transportation of cargo and mail between the U.S. and all current and future U.S. open-skies partner countries, which currently consists of more than 130 foreign countries.

●

ABX and ATI also hold exemption authorities issued by the DOT to conduct scheduled all-cargo operations between the U.S. and certain foreign countries with which the U.S. does not have a liberal ("open-skies") air transportation agreement.

●

The DOT has issued to OAI a Certificate of Public Convenience and Necessity for Interstate Charter Air Transportation and a Certificate of Public Convenience and Necessity for Foreign Charter Air Transportation that authorizes it to engage in interstate and foreign charter air transportation of persons, property and mail.

●

In 2019, the DOT also issued OAI exemption authority to engage in scheduled foreign air transportation of property and mail between the U.S. and all existing and future countries with an open-skies air service agreement with the U.S.

By maintaining these certificates, the Company, through ABX and ATI, can and currently does conduct all-cargo charter operations worldwide subject to the receipt of any necessary foreign government approvals. Further, the certificates issued to ATI and OAI authorize the air carriers to conduct passenger charter operations worldwide subject to the receipt of any necessary foreign government approvals. Periodically, the DOT re-examines a carrier's managerial competence, financial resources and plans, compliance disposition and citizenship in order to determine whether the carrier remains fit, willing and able to engage in the transportation services it is authorized to provide.

The DOT has the authority to impose civil penalties, or to modify, suspend or revoke our certificates and exemption authorities for cause, including failure to comply with federal laws or DOT regulations. A company holding the above-referenced certificates and exemption authorities must continuously qualify as a citizen of the United States, which, pursuant to federal law, requires that (1) it be organized under the laws of the U.S. or a U.S. state, territory or possession, (2) that its president and at least two-thirds of its board of directors and other managing officers be U.S. citizens, (3) that no more than 25% of its voting interest be owned or controlled by non-U.S. citizens, and (4) that it not otherwise be subject to foreign control. We believe our airline subsidiaries possess all necessary DOT-issued certificates and authorities to conduct their current operations and that each continues to qualify as a citizen of the United States as described.

Table of Contents

Federal Aviation Administration

The FAA regulates aircraft safety and flight operations generally, including equipment, ground facilities, maintenance, flight dispatch, training, communications, the carriage of hazardous materials and other matters affecting air safety. The FAA issues operating certificates and detailed "operations specifications" to carriers that possess the technical competence to safely conduct air carrier operations. In addition, the FAA issues certificates of airworthiness to each aircraft that meets the requirements for aircraft design and maintenance. We believe that ABX, ATI and OAI hold all airworthiness and other FAA certificates and authorities required for the conduct of their business and the operation of their aircraft. The FAA has the power to suspend, modify or revoke such certificates for cause and to impose civil penalties for any failure to comply with federal laws or FAA regulations.

The FAA has the authority to issue regulations, airworthiness directives and other mandatory orders relating to, among other things, the inspection, maintenance and modification of aircraft and the replacement of aircraft structures, components and parts, based on industry safety findings, the age of the aircraft and other factors. If the FAA were to determine that the aircraft structures or components are not adequate, it could order our airline subsidiaries and other operators to take certain actions, including but not limited to, grounding aircraft, reducing cargo loads, strengthening any structure or component found to be inadequate, or making other modifications to the aircraft. New mandatory directives could also be issued requiring our airline subsidiaries to inspect and replace aircraft components based on their age or condition. As a routine matter, the FAA issues airworthiness directives applicable to the aircraft operated by our airline subsidiaries, and our airlines comply, sometimes at considerable cost, as part of their aircraft maintenance programs.

In addition to the FAA practice of issuing regulations and airworthiness directives as conditions warrant, the FAA has adopted new regulations to address issues involving aging, but still economically viable, aircraft on a more systematic basis. FAA regulations mandate that aircraft manufacturers establish aircraft limits of validity and service action requirements based on the number of aircraft flight cycles (a cycle being one takeoff and one landing) and flight hours before widespread fatigue damage might occur. Service action requirements include inspections and modifications to preclude development of significant fatigue damage in specific aircraft structural areas. The Boeing Company has provided its recommendations of the limits of validity to the FAA, and the FAA has now approved the limits for the Boeing 757, 767 and 777 model aircraft. Consequently, after the limit of validity is reached for a particular model aircraft, air carriers will be unable to continue to operate the aircraft without the FAA first granting an extension of time to the operator. At this point, we do not foresee a situation in which we would seek an extension from the FAA for an aircraft. There can be no assurance that the FAA would extend the deadline, if an extension were to be requested.

The FAA issued an airworthiness directive ("AD") in January 2023 to address potential 5G C-Band interference with certain aircraft radio altimeters as U.S. wireless providers upgraded to 5G technology in various U.S. wireless markets. The AD requires that those U.S. aircraft types that do not meet “tolerance requirements” either need a radio frequency filter or upgraded 5G C-Band tolerant radio altimeter, or they risk operational restrictions at affected airports after February, 2024. Our airline subsidiaries have modified and upgraded their aircraft fleets as necessary in order to timely comply with the AD requirements.

The FAA requires each of our airline subsidiaries to implement a drug and alcohol testing program with respect to all employees performing safety sensitive functions and, unless already subject to testing, contractor employees that engage in safety sensitive functions. We believe that each of our airlines complies with these regulations.

Transportation Security Administration

The TSA, an administration within the U.S. Department of Homeland Security, is responsible for the screening of passengers and their baggage. TSA rules require airlines to adopt and comply with standard aircraft operator security programs, including, among other requirements, the manner in which cargo must be screened prior to being loaded on aircraft and plans to implement cybersecurity measures. We believe that our airline subsidiaries comply with all applicable aircraft, passenger and cargo security requirements. The TSA has adopted cargo security-related rules that have imposed additional requirements on our airlines and our customers. The TSA also requires each airline to perform criminal history background checks on all employees. In addition, we may be required to reimburse the TSA for the cost of security services it may provide to the Company’s airline subsidiaries in the future. The TSA holds (and has exercised) authority to issue regulations, including in cases of emergency the authority to do so without advance notice, including issuance of a grounding order as occurred on September 11, 2001. The TSA also requires airlines to develop a TSA-approved plan to maintain measures for cybersecurity and assess the effectiveness of those measures on an ongoing basis. The TSA's enforcement powers are similar to the DOT's and FAA's powers described above.

Table of Contents

International Regulations

When operating in other countries, our airlines are subject to aviation agreements between the U.S. and the respective countries or, in the absence of such an agreement, the airlines' operating rights are governed by principles of reciprocity. International aviation agreements are periodically subject to renegotiation, and changes in U.S. or foreign governments could result in the alteration or termination of the agreements affecting our international operations. Commercial arrangements such as ACMI agreements between our airlines and our customers in other countries, may require the approval of foreign governmental authorities. Foreign authorities may limit or restrict the use of our aircraft in certain countries. Also, foreign government authorities often require licensing and business registration before beginning operations. Foreign laws, rules, regulations and licensing requirements governing air transportation are generally similar, in principle, to the regulatory scheme of the United States as described above, although in some cases foreign requirements are comparatively less onerous and in others, more onerous. Such authorities have enforcement powers generally similar to those of the U.S. agencies described above.

When we lease aircraft to customers operating in other countries, the aircraft must comply with the aviation authority designated by that country. For example, the European Aviation Safety Agency ("EASA") is a regulatory agency of the European Union, akin to the FAA, that governs many of our aircraft leased outside the U.S.

Data Protection

There has been increased regulatory and enforcement focus on data protection in the U.S. (at both the state and federal level) and in other countries. For example, the European Union ("E.U.") General Data Protection Regulation ("GDPR"), which became effective in May 2018, greatly increases the jurisdictional reach of E.U. law and increases the requirements related to the protection of personal data, including individual notice and opt-out preferences and public disclosure of significant data breaches. Additionally, violations of the GDPR can result in significant fines. Other governments have enacted or are enacting similar data protection laws, and are considering data localization laws that would govern the use of data outside of their respective jurisdictions. Although nearly all of our employees are based in the U.S., which mitigates the impact of GDPR and other privacy regulations, various U.S. states have been adopting and may continue to adopt updated laws and regulations governing privacy that could have an impact on us, and the nature of our business involves transfer of certain data across state and international borders.

Other Regulations

Various regulatory authorities have jurisdiction over significant aspects of our business, and it is possible that new laws or regulations or changes in existing laws or regulations or the interpretations thereof could have a material effect on our financial position and results of operations. In addition to the above, other laws and regulations to which we are subject, and the agencies responsible for compliance with such laws and regulations, include the following:

•

As described under the heading "Human Capital Management" above, the labor relations of our airline subsidiaries are generally regulated under the Railway Labor Act, which vests in the NMB certain regulatory powers with respect to disputes between airlines and labor unions arising under collective bargaining agreements;

•

The Federal Communications Commission regulates our airline subsidiaries’ use of radio facilities pursuant to the Federal Communications Act of 1934, as amended;

•

U.S. Customs and Border Protection issues landing rights, inspects passengers entering the United States, and inspects cargo imported to the U.S. from our subsidiaries’ international operations, and those operations are subject to similar regulatory requirements in foreign jurisdictions;

•

The U.S. Centers for Disease Control and Prevention has authority to impose requirements related to the mitigation of communicable diseases such as requiring masking on aircraft, negative test results, collection of passenger data for contact tracing, and quarantine requirements;

•

We must comply with U.S. Citizenship and Immigration Services regulations regarding the eligibility of our employees to work in the U.S., and the entry of passengers to the U.S.;

Table of Contents

•

We must comply with wage, working conditions and other regulations of the Department of Labor regarding our employees; and

•

The Office of Foreign Assets Control ("OFAC") of the U.S. Department of the Treasury, the Bureau of Industry & Security ("BIS") of the U.S. Commerce Department, and other government agencies administer and enforce economic and trade sanctions based on U.S. national security and foreign policy concerns, which may limit our aircraft sale and leasing business activities in and for certain countries.

Available Information

ATSG

ATSG's filings with the SEC, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to these reports, as well as ATSG's definitive proxy materials, are available free of charge from the "Investors - Reports & Filings - SEC Filings" section of our website at www.atsginc.com as soon as reasonably practicable after filing with the SEC.

For more information concerning our sustainability initiatives, please refer to the "Responsibility - Sustainability" section of our website, www.atsginc.com.

The information contained on our website is not a part of this Annual Report on Form 10-K and is not incorporated into any other document that ATSG files or furnishes with the SEC unless expressly identified as such.

The SEC maintains an Internet site that contains reports, proxy and information statements and other information regarding ATSG at www.sec.gov.

ITEM 1A. RISK FACTORS

The risks described in this Item 1A could adversely affect our financial condition, results of operations, liquidity and capital resources as well as the market price of ATSG's common stock. Investors should carefully consider these risks before making an investment decision regarding ATSG's common stock. The risks below are not the only risks that we face, but these are the ones we currently believe have the potential to significantly affect ATSG’s stakeholders if they were to develop adversely (due to size, volatility, or both). Additional risks that are currently unknown to us or that we currently consider immaterial or unlikely could also adversely affect us. Please also see the “Cautionary Note Regarding Forward-Looking Statements” preceding Part I of this Form 10-K.

Risks Related to the Merger

The Merger may not be completed on the terms or timeline currently contemplated or at all, which could incur termination fees or adversely affect our stock price, business, financial condition and results of operations.

On November 3, 2024, ATSG entered into the Merger Agreement, which provides that the consummation of the Merger is subject to certain customary closing conditions, including:

●

obtaining the approval and adoption of the Merger Agreement by the holders of a majority of the outstanding shares of ATSG common stock (“Company Stockholder Approval”), which approval has been obtained;

●

receipt of certain regulatory approvals and the expiration or termination of any waiting period (and any extension thereof) applicable to the consummation of the Merger under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the rules and regulations promulgated thereunder as well as certain other applicable foreign direct investment laws of certain jurisdictions;

●

the absence of any law or order enjoining, restraining or otherwise making illegal, preventing or prohibiting the consummation of the Merger;

●

the other party’s compliance in all material respects with its pre-closing covenants contained in the Merger Agreement; and

●

the accuracy of the other party’s representations and warranties (subject to customary materiality qualifiers).

Table of Contents

While it is anticipated that the Merger will be consummated during the second quarter of 2025, the conditions above may not be satisfied in a timely manner or at all, or an effect, event, development or change could delay or prevent these conditions from being satisfied. If the Merger is not consummated for any reason, the trading price of ATSG’s common stock may decline to the extent that the market price of the common stock reflects positive market assumptions that the Merger will be consummated and the related benefits will be realized. We may also be subject to additional risks if the Merger is not completed, including:

●

the requirement in the Merger Agreement that, under certain circumstances, we pay Parent a termination fee of up to $55,339,993 million in cash;

●

we may experience negative reactions from the financial markets, including negative impacts on the market price of our common stock;

●

we cannot be certain that we could find a merger partner or transaction as attractive as Parent and the Merger;

●

incurring substantial costs related to the Merger, such as financial advisory, legal, accounting and other professional services fees that have already been incurred or will continue to be incurred until closing;

●

reputational harm including relationships with investors, customers and business partners due to the adverse perception of any failure to successfully complete the Merger; and

●

potential disruption to our business and distraction of our workforce and management team to pursue other opportunities that could be beneficial to us, in each case without realizing any of the benefits of having the Merger completed.

ATSG or Parent may terminate the Merger Agreement if the Merger has not been consummated on or before May 3, 2025, or such later date or time as may be agreed to in writing by Parent and ATSG (the “Outside Date”), subject to certain extensions provided in the Merger Agreement. ATSG or Parent also may terminate the Merger Agreement (i) by mutual written agreement; (ii) if a governmental authority of competent jurisdiction has issued an order, or applicable law is in effect, enjoining, restraining or otherwise making illegal, preventing or prohibiting the consummation of the Merger and such order or law is, or has become, final and non-appealable, (iii) if the Company Stockholder Approval shall not have been obtained at a meeting of ATSG’s stockholders; or (iv) the other party breaches or fails to perform in any material respect any representation, warranty or covenant that results in the failure of the related closing condition to be satisfied, subject to a cure period in certain circumstances. ATSG also may, under certain circumstances and subject to the terms of the Merger Agreement, terminate the Merger Agreement (x) in order for ATSG to enter into an alternative acquisition agreement with respect to a Superior Proposal (as defined in the Merger Agreement) or (y) if all of the applicable closing conditions have been satisfied and ATSG is prepared to consummate the Merger but Parent and MergerCo fail to consummate the Merger in accordance with the Merger Agreement. Additionally, Parent may, under certain circumstances and subject to the terms of the Merger Agreement, terminate the Merger Agreement if the Board withdraws or adversely modifies its recommendation that ATSG’s stockholders vote in favor of adopting the Merger Agreement. The occurrence of the aforementioned could adversely affect our stock price, business, financial condition and results of operations.

Additionally, in approving the Merger Agreement, the Board considered a number of factors and potential benefits, including the fact that the merger consideration to be received by holders of common stock represents a significant premium to the recent market price. If the Merger is not completed, neither ATSG nor the holders of its common stock will realize this benefit of the Merger. Moreover, we would also have nevertheless incurred substantial transaction-related costs and the loss of management time and resources.

Our directors and executive officers have interests in the Merger that may be different from, or in addition to, the interests of our other stockholders.

Our directors and executive officers have financial interests in the Merger that may be different from, or in addition to, the interests of our other stockholders. These interests may include the following:

●

the treatment of ATSG equity awards and incentive cash awards provided for under the Merger Agreement;

●

severance and other benefits in the case of certain qualifying terminations under the terms of an individual change in control agreement or employee severance plans;

●

any retention or transaction bonuses if or when established for the benefit of our employees; and

●

continued indemnification and insurance coverage under the Merger Agreement, ATSG's organizational documents and indemnification agreements ATSG has entered into with each of its directors and executive officers.

Table of Contents

The Merger Agreement may limit our ability to pursue alternatives to the Merger and may discourage other companies from trying to acquire us for greater consideration than what is specified in the Merger Agreement.

The Merger Agreement contains provisions that make it more difficult for us to sell our business to a buyer other than Parent, even if that party were prepared to pay consideration with a higher per-share value than the consideration payable in the Merger pursuant to the Merger Agreement. These provisions include restrictions on ATSG’s solicitation of alternative acquisition proposals from third parties outside of a defined go-shop period. Under the Merger Agreement, ATSG is required to pay a termination fee of up to $55,339,993 if the Merger Agreement is terminated under certain circumstances (including to accept certain superior acquisition proposals), which could deter other potential bidders from making an acquisition proposal prior to the consummation of the Merger and could impact ATSG's ability to engage in another transaction for up to twelve months if the Merger Agreement is terminated in certain circumstances.

We are the target of lawsuits challenging the Merger Agreement that may prevent the Merger from being consummated within the expected timeframe or at all and/or may results in substantial costs and damages.

Lawsuits have been filed against us, the Board of Directors and other parties to the Merger Agreement, challenging our acquisition by Parent, or making other claims in connection with the Merger. Even if these lawsuits are without merit, defending against these claims can result in substantial costs and divert management time and resources. Such lawsuits may be brought by purported stockholders or other interested parties, seeking, among other things, to enjoin consummation of the Merger. One of the conditions to the consummation of the Merger is that the consummation of the Merger is not enjoined, restrained or otherwise made illegal, prevented or prohibited by any order or legal or regulatory restraint or prohibition of a court of competent jurisdiction or any governmental entity. As such, if the plaintiffs in such potential lawsuits are successful in obtaining an injunction prohibiting the defendants from completing the Merger on the agreed upon terms, then such injunction may prevent the Merger from becoming effective within the expected timeframe or at all.

The announcement and pendency of the Merger and the other transactions contemplated by the Merger Agreement may adversely affect our business, results of operations and financial condition.

Uncertainty about the effect of the Merger and the other transactions contemplated by the Merger Agreement (collectively, the “Transactions”) on our employees, customers, suppliers, and other parties may have an adverse effect on our business, results of operations and financial condition, regardless of whether the Merger is completed. These risks include, but are not limited to, the following, all of which could be increased by a delay in or abandonment of the Merger:

●

our ability to attract, retain, and motivate employees, including key personnel, could be impaired;

	●	significant management time and resources could be diverted to the consummation of the Transactions;
	●	relationships with customers, suppliers, and other business partners could be affected;
	●	certain business decisions by our suppliers and other business partners could be delayed or changed;
	●	we may not be able to pursue alternative business opportunities or make appropriate changes to our business;
	●	we have undertaken certain covenants in the Merger Agreement restricting the conduct of our business during the pendency of the Merger, including restrictions on undertaking certain significant financing transactions and certain other actions, even if such actions would prove beneficial to us, and
	●	significant costs, expenses, and fees for professional services and other transaction costs in connection with the Transactions have been and may continue to be incurred.

We have incurred, and expect to continue to incur, substantial transaction costs in connection with the Transactions.

In connection with the Transactions, we have incurred and expect to continue to incur significant costs and expenses, including financial advisory, legal, accounting, consulting and other advisory fees and expenses, reorganization and restructuring costs, severance and employee benefit-related expenses and other related charges and costs. In addition, we may incur significant one-time charges as a result of costs associated with the Transactions. We will not be able to quantify the exact amount of these charges or the period in which they will be incurred until after the Transactions are completed. While we have assumed that a certain level of expenses will be incurred in connection with the Transactions, there are many factors that could affect the total amount or timing of any integration and implementation expenses. Some of the factors affecting the costs associated with the Transactions include the timing of the completion of the Transactions, the resources required for the completion of the Transactions and the reactions to the Transactions by third parties, including customers and suppliers, as well as the outcome of any potential litigation regarding the Transactions. There are also a large number of processes, policies, procedures, operations, technologies and systems that may be required to be updated or developed in connection with the Transactions. There may also be additional unanticipated significant costs in connection with the Transactions that we do not anticipate and may not be able to recoup.

Table of Contents

Regulatory and Compliance Risk

Failure to maintain the operating certificates and authorities of our airlines would adversely affect our business.

Our airline subsidiaries have the necessary authority to conduct flight operations pursuant to the economic authority issued by the DOT and the safety-based authority issued by the FAA. The continued effectiveness of such authority is subject to their compliance with applicable statutes and DOT, FAA and TSA rules and regulations, including any new rules and regulations that may be adopted in the future. The loss of such authority by an airline subsidiary could cause a default of covenants in our syndicated credit agreement that includes the ability to obtain term loans and a revolving credit facility and is scheduled to mature on October 19, 2027 (the “Senior Credit Agreement”) (see Note F to the consolidated financial statements included in this Form 10-K for more information regarding the Senior Credit Agreement). Such a default or loss of authority would materially and adversely affect our financial position, results of operations, cash flows, and airline operations, effectively eliminating the airline's ability to continue to provide air transportation services.

Our business could be negatively impacted by cost-cutting measures implemented by the U.S. government or by adverse audit findings by the U.S. government.

Due to the focus on reduced spending by the Trump administration and U.S. government officials, the DoD may adopt various cost cutting initiatives that may include terminating some or all of our contracts and reducing the rates that the DoD will agree to pay us. Such reductions may have a material adverse effect on our financial position, results of operations and cash flows. In addition, DoD contracts are subject to government audit, including with respect to performance, costs, internal controls and compliance with applicable laws and regulations. If an audit uncovers improprieties or we otherwise fail to adhere to applicable governmental rules or regulations, we may be subject to civil or criminal penalties, including termination of such contracts, forfeiture of profits, fines and suspension or debarment from doing business with the DoD. In addition, the DOT, FAA, TSA and other government agencies can initiate announced or unannounced investigations of our subsidiary air carriers, repair stations and other entities to determine if they are continuously conducting their operations in accordance with all applicable laws, rules and regulations. If an investigation uncovers a failure to comply, we could be subject to civil or criminal penalties that may adversely impact one or more of our subsidiaries.

Our participation in the CRAF Program could adversely restrict our commercial business in times of national emergency.

All three of our airlines participate in the CRAF Program, which permits the DoD to utilize the airlines’ aircraft pledged to the CRAF Program during national emergencies when the need for military airlift exceeds the availability of military aircraft. In the event of such an emergency, our airline subsidiaries could incur the loss of use of such aircraft under commercial arrangements, which could have an adverse impact on our operating results.

Proposed rules from the DOT, FAA and TSA could increase our operating costs and reduce customer utilization of airfreight.

FAA rules for Flightcrew Member Duty and Rest Requirements ("FMDRR") for passenger airline operations apply to our operation of passenger and combi aircraft for the DoD and other customers. The FMDRR impact the required amount and timing of rest periods for pilots between work assignments and modified duty and rest requirements based on the time of day, number of scheduled segments, flight types, time zones and other factors. Failure to remain in compliance with these rules may subject us to fines or other enforcement action.

There are separate crew rest requirements applicable to all-cargo aircraft of the type operated by the Company. The FAA has rejected, as have the courts, an attempt to apply the passenger airline crew rest rules to all-cargo operations. If such rest requirements and restrictions were imposed on our cargo operations, these rules could have a significant impact on the costs incurred by our airlines. Our airline subsidiaries would attempt to pass such additional costs through to their customers in the form of price increases. Customers, as a result, may seek to reduce their utilization of aircraft in favor of less expensive transportation alternatives.

The NMB could determine that two or more of our airline subsidiaries constitute a single transportation system.

During 2017, the NMB ruled that ABX and ATI do not constitute a single transportation system for the purposes of collective bargaining. The NMB could reconsider whether the airlines constitute a single transportation system and require that the ABX and ATI crewmembers, or that the ABX, ATI and OAI crewmembers, be represented by the same union. A single transportation system determination by the NMB could give rise to complex contractual issues, including integrating the airlines' seniority lists, and materially impact the dynamics with respect to future collective bargaining agreement ("CBA") negotiations. While it is unlikely that the NMB would reconsider or find that ABX and ATI, or that ABX, ATI and OAI, constitute a single transportation system, the case-by-case analysis used by the NMB makes such predictions uncertain. Such a finding could have material adverse consequences to the Company.

Table of Contents

We may be impacted by government requirements associated with transacting business with or in foreign jurisdictions and trade policies, including tariffs.

The U.S. and other governments have imposed trade and economic sanctions in certain geopolitical areas and on certain organizations and individuals. The U.S. Departments of Justice ("DOJ"), Commerce and Treasury, as well as other government agencies have a broad range of civil and criminal penalties they may seek to impose for violations of the Foreign Corrupt Practices Act (“FCPA”) or other regulations, including sanctions administered by the Office of Foreign Assets Control ("OFAC"). In addition, the DOT, FAA and TSA may at times limit the ability of our airline subsidiaries to conduct flight operations in certain areas of the world. Under such laws and regulations, we may be obliged to limit our business activities, incur additional costs for compliance programs and may be subject to enforcement actions or penalties for noncompliance. In recent years, the U.S. government has generally increased its oversight and enforcement activities with respect to these laws and the relevant agencies may continue to increase these activities. The current pause in certain FCPA enforcement activities while the DOJ enhances the related guidance does not relieve companies such as ours from compliance requirements, and we cannot predict the nature of any future DOJ guidance in this regard that may affect our compliance policies and activities.

Our operations and those of our customers also depend upon favorable trade relations between the U.S. and those foreign countries in which our customers, subcontractors and materials suppliers have operations. A protectionist trade environment in either the U.S. or those foreign countries in which we do business, such as the recently announced U.S. tariffs or other changes in the current tariff structures, export compliance or other trade policies, may materially and adversely affect our ability to operate or the demand for our services. While the complete scope of actions that the Trump administration may take with respect to existing and proposed trade agreements, or restrictions on trade generally, remains unclear, additional more stringent export and import controls may be ultimately imposed in the future. Any trade agreements that may be amended or entered into are subject to a number of uncertainties, including the imposition of new tariffs or adjustments and changes to the products covered by existing tariffs. The impact of these and other new laws, regulations and policies that affect global trade cannot be predicted.

Penalties, fines and sanctions levied by governmental agencies or the costs of complying with government regulations could negatively affect our results of operations.

The operations of our subsidiaries are subject to complex aviation, transportation, security, environmental, labor, employment and other laws and regulations. These laws and regulations generally require our subsidiaries to maintain and comply with the terms of a wide variety of certificates, permits, licenses and other approvals. Their inability to maintain required certificates, permits or licenses, or to comply with applicable laws, ordinances or regulations could result in substantial fines or, in the case of DOT and FAA requirements, possible suspension or revocation of their authority to conduct operations.

U.S. and international tax legislation may adversely affect our results of operations and cash flows.

We are subject to taxation at the federal, state and local levels in the United States, as well as taxation in some international jurisdictions. Governments may enact significant changes to the taxation of business entities which could increase the Company’s tax payments. Numerous provisions of the U.S. Tax Cuts and Jobs Act are set to expire in 2025, which could have an adverse impact on the Company’s tax obligations and results of operations.

The costs of maintaining our aircraft in compliance with government regulations could negatively affect our results of operations and require further investment in our aircraft fleet.

Manufacturer Service Bulletins, FAA regulations and FAA Airworthiness Directives issued under its “Aging Aircraft” program cause our airlines, as operators of older aircraft, to be subject to additional inspections and modifications to address problems of corrosion and structural fatigue at specified times. The FAA may issue airworthiness directives that could require significant costly inspections and major modifications to such aircraft. The FAA may issue airworthiness directives that could limit the usability of certain aircraft types.

Table of Contents

In addition, FAA regulations require that aircraft manufacturers establish limits on aircraft flight cycles to address issues involving aging, but still economically viable, aircraft, as described in Item 1 of this Form 10-K, under "Federal Aviation Administration." These regulations may increase our maintenance costs and eventually limit the use of our aircraft. See Item 2 of this Form 10-K, "Properties," for a description of our aircraft, including year of manufacture.

The FAA and ICAO are in the process of developing programs to modernize air traffic control and management systems. The FAA's program, Next Generation Air Transportation Systems, is an integrated system that requires updating aircraft navigation and communication equipment. The FAA has mandated the replacement of current ground based radar systems with more accurate satellite based systems on our aircraft. The ICAO began phasing in similar requirements for aircraft operating in Europe during 2015. These programs may increase our costs and limit the use of our aircraft. Aircraft not equipped with advanced communication systems may be restricted to certain airspace.

We may be negatively affected by global climate change or by legal, regulatory or market responses to such climate change.

We are subject to the regulations of the EPA and foreign, state and local governments regarding air quality and other matters. In part, because of the highly industrialized nature of many of the locations where we operate, there can be no assurance that we have discovered all environmental contamination or other matters for which we may have or share responsibility.

Concern over climate change, including the impact of global warming, has led to significant federal, state and international legislative and regulatory efforts to limit GHG emissions. The European Commission has mandated the extension of its ETS for GHG emissions to the airline industry. Under the European Union ETS, all ABX, ATI and OAI flights that are wholly within the European Union are now covered by the ETS requirements, and each year we are required to submit emission allowances in an amount equal to the carbon dioxide emissions from such flights. If we exceed the airlines' emission allowances, we will be required to purchase additional emission allowances on the open market.

Similarly, in 2016, the ICAO passed a resolution adopting CORSIA, which is a global, market-based emissions offset program to encourage carbon-neutral growth beyond 2020. A pilot phase began in 2021, in which countries may voluntarily participate, followed by a first phase of the program beginning in 2024 that is also voluntary, and full mandatory participation is scheduled to begin in 2027. The United States has agreed to participate in the two voluntary phases. ICAO continues to develop details regarding implementation, but although the magnitude remains to be determined, compliance with CORSIA will increase our operating costs.

The SAF mandates for EU aviation enacted in September 2023 establish the amounts of SAF fuels to be uploaded by airlines including U.S. carriers at EU airports beginning in January 2025. The mandates apply to U.S. cargo airlines that operated at least one weekly flight in the EU in the prior annual reporting period. The SAF mandate starts at 2% of all aviation fuels used in the EU in 2025; stepping up to 6% by 2030; and 63% by 2050, although the availability of sufficient SAF to meet EU mandates at commercially-acceptable prices is uncertain at this time.

All three of our airlines, ABX, ATI and OAI, as noted, are certified to use SAF, which has similar properties to conventional jet fuel but with a smaller carbon footprint. Depending on the type and production technique used, SAF can reduce GHG emissions up to 99% compared to conventional jet fuel. We support efforts to improve SAF production nationally and seek to use SAF at locations where it is available, but the production and supply of SAF is currently quite limited and significantly more expensive than traditional fuel. The Inflation Reduction Act passed by the U.S. Congress in 2022 would provide SAF tax credits of up to $1.75 per gallon for SAF producers which is expected to boost production of SAF and reduce its cost for the airlines. However, the future viability of SAF tax credits under the Inflation Reduction Act is uncertain. President Trump has indicated his opposition to the Inflation Reduction Act and has issued an Executive Order freezing all federal regulations pending a 60-day review, which would freeze Treasury guidance relating to the implementation of the SAF tax credits provided for by the Inflation Reduction Act. In addition, President Trump has recently announced U.S. tariffs, which may increase the price of feedstocks used in SAF production. The loss of, or less favorable terms for tax credits and other SAF production incentives as well the potential impact of any tariffs would render the cost to our airlines and their customers of using SAF prohibitive and any impacts on the availability and cost of SAF resulting from changes in the Trump administration’s policies and priorities could have a material adverse impact on our on our operations, cash flows, financial position, and results of operations.

Table of Contents

The U.S. Congress and certain states have also considered legislation regulating GHG emissions. In addition, even in the absence of such legislation, the EPA has sought to regulate GHG emissions, especially aircraft engine emissions. In July 2016, the EPA issued a finding that aircraft engine emissions cause or contribute to air pollution that may reasonably be anticipated to endanger public health. This finding is a regulatory prerequisite to the EPA’s adoption of a new certificate standard for aircraft emissions. In January 2021, the EPA issued a final rule regarding GHG emissions standards for new aircraft engines consistent with ICAO standards that were adopted in 2017. The EPA final rule does not apply to engines on aircraft that are already in service, as is also the case with the ICAO standards. The EPA standards have been challenged by several states and environmental organizations and we cannot predict the outcome of legal challenges to the EPA’s final rules or the EPA’s position with respect to such rules under the Trump administration. In February 2024, the FAA issued its final rule on fuel efficiency standards which, as finalized, applies, inter alia, to in-service aircraft types certificated before 2021 but modified post-2023 after the aircraft was issued an airworthiness certificate, such as the Boeing 767 aircraft type. Even if the final rule is interpreted as applicable to a number of our airline subsidiaries’ Boeing 767 converted freighter aircraft, the impact on our operations, financial position, and results of operations is expected to be minimal.

The Trump administration has issued an executive order directing the U.S. to withdraw from the Paris climate accord, an agreement among 196 countries to reduce GHG emissions. The impact of the U.S. exiting the Paris climate accord on future U.S. policy regarding GHG emissions, on CORSIA and on other GHG regulations is uncertain. The extent to which other countries implement the agreement could have an adverse impact on us.

The cost to comply with new and potential environmental laws and regulations could be substantial for us. These costs could include an increase in capital costs associated with updating aircraft, among other things. We cannot predict the effect on our cost structure or operating results of complying with future environmental laws and regulations in the U.S. and in foreign jurisdictions until the timing, scope and extent of such laws and regulations becomes better known. The Trump administration is expected to disfavor climate change legislation and under the Trump administration, the EPA, FAA and other federal agencies may seek to modify, rescind or withdraw, or may change their approach to implementation and enforcement of, rules and guidance relating to climate change and GHG emissions. Even without such legislation or regulation, increased awareness and adverse publicity in the global marketplace about GHG emitted by companies in the airline and transportation industries could harm our reputation and reduce demand for our services.

We are required to safeguard proprietary information and sensitive or confidential data, including personal information of customers, employees and others.

To conduct our operations, we regularly move certain data across national borders, and consequently we are subject to a variety of continuously evolving and developing laws and regulations in the United States and abroad regarding privacy, data protection and security. The scope of the laws that may be applicable to us is often uncertain and may be conflicting, particularly with respect to foreign laws. GDPR, which greatly increases the jurisdictional reach of European Union law and adds a broad array of requirements for handling personal data, including the public disclosure of significant data breaches, became effective in May 2018. Other countries and states have enacted or are enacting privacy and data localization laws that require data to stay within their borders. All of these evolving compliance and operational requirements impose significant costs that are likely to increase over time.

Operational Risk

Our costs incurred in providing airline services could be more than the contractual revenues generated.

Each airline develops business proposals for the performance of ACMI, CMI, charter and other services for its customers, crew productivity and maintenance expenses. Projections contain key assumptions, including maintenance costs, flight hours, aircraft reliability, crewmember productivity and crewmember compensation and benefits. We may overestimate revenues, the level of crewmember productivity, and/or underestimate the actual costs of providing services when preparing business proposals. If actual costs are higher than projected or aircraft reliability is less than expected, future operating results may be negatively impacted.

The supply of licensed pilots and qualified mechanics could negatively impact our operations and financial results.

We rely on a skilled workforce to pilot our airplanes and perform scheduled aircraft maintenance. Our industry has experienced a shortage of crewmembers and mechanics. While we have taken steps to attract, recruit, train and incentivize employees, situations may occur in which we cannot operate scheduled flights or commit to charter opportunities because we lack the appropriate personnel. Our revenues from flight operations as well as our aircraft maintenance businesses could be constrained due to the lack of personnel. We may raise compensation and incentive levels to maintain or improve revenues levels. As a result, our profitability levels could be lower than expected.

Table of Contents

The concentration of aircraft types and engines in our airlines could adversely affect our operating and financial results.

Our combined aircraft fleet is currently concentrated in four aircraft types, and we are expanding into one additional aircraft type. If any of these aircraft types encounter technical difficulties that result in significant FAA ADs or grounding, our ability to lease the aircraft would be adversely impacted, as would our airlines' operations, which could be exacerbated if we are constrained for any reason in our access to replacement aircraft or additional capital.

The cost of aircraft repairs and unexpected delays in the time required to complete aircraft maintenance could negatively affect our operating results.

Our airlines provide flight services throughout the world, sometimes operating in remote regions. Our aircraft have experienced, from time to time, and may in the future experience maintenance events in locations that do not have the necessary repair capabilities or are difficult to reach. As a result, we may incur additional expenses and lose billable revenues that we would have otherwise earned. Under certain customer agreements, we are required to provide a spare aircraft while scheduled maintenance is completed. If delays occur in the completion of aircraft maintenance, we may incur additional expense to provide airlift capacity and forgo revenues.

Our operating results could be adversely impacted by negotiations regarding collective bargaining agreements ("CBAs") with employee union representatives.

The flight crewmembers for each of the Company's airlines are unionized. ABX and OAI's crewmembers are represented by the International Brotherhood of Teamsters ("IBT") while ATI's crewmembers are represented by the Air Line Pilots Association ("ALPA"). Approximately 20% of our employees are parties to CBAs that are now amendable and the parties, after negotiations, have jointly sought mediation through the NMB. Another CBA becomes amendable in 2030. During the negotiation of CBA amendments, the airline and the union are each required to maintain the status quo of the CBA; neither the airline nor the union may engage in a lock-out, strike or other self-help until such time as they are released from further negotiations by the mediator for the NMB, and after the conclusion of a mandatory 30-day “cooling off” period. It is rare for mediators to declare an impasse and release the parties. Instead, the NMB prefers to require the parties to remain in negotiations until such time as they come to an agreement. Despite this process, it's possible for disruptions in customer service to occur from time to time, resulting in increased costs for the airline and monetary penalties under certain customer agreements if monthly on-time reliability thresholds are not achieved. Further, if we do not maintain minimum on-time reliability thresholds over an extended period of time, we could be found in default of one or more customer agreements.

Contract negotiations with a union could result in reduced flexibility for scheduling employees and higher operating costs for the airlines, making our airlines less competitive. If amendments to a CBA increase our costs and we cannot recover such costs through price increases, our operating results would be negatively impacted. In such event, it may be necessary for us to terminate customer contracts or curtail planned growth.

The rate of aircraft deployments may adversely impact our operating results and financial condition.

Our future operating results and financial condition will depend in part on our subsidiaries’ ability to successfully deploy aircraft in support of customers' operations while generating a positive return on investment. Our success will depend, in part, on our customers' ability to secure additional cargo volumes, in U.S. and international markets. Deploying aircraft in international markets can pose additional risks, costs and regulatory requirements which could result in periods of delayed deployments. In addition, deploying an aircraft into service typically requires various approvals from the FAA or EASA. Aircraft deployments could be delayed if such FAA or EASA approvals are delayed.

We may lose revenue if we fail to meet the scheduled delivery date for aircraft required by customer agreements.

If CAM cannot meet the agreed delivery schedule for an aircraft lease, the customer may have the right to cancel the aircraft lease, thus delaying revenues until the aircraft can be completed and re-marketed successfully and exposing CAM to potential liability to the original customer.

Table of Contents

Our airline operating agreements include on-time reliability requirements which can impact our operating results and financial condition.

Certain of our airline operating agreements contain monthly incentive payments for reaching specific on-time reliability thresholds. Additionally, such airline operating agreements contain monetary penalties for aircraft on-time reliability below certain thresholds. As a result, our operating revenues may vary from period to period depending on the achievement of monthly incentives or the imposition of penalties. Further, an airline could be found in default of an agreement if it does not maintain minimum on-time reliability thresholds over an extended period of time. If our airlines are placed in default due to the failure to maintain on-time reliability thresholds, the impacted customer(s) may elect to terminate all or part of the services we provide under certain customer agreements after a cure period.

If ABX fails to maintain aircraft on-time reliability above a minimum threshold under the restated CMI agreement with DHL for two consecutive calendar months or three months in a rolling twelve-month period, we would be in default of the restated CMI agreement with DHL. In that event, DHL may elect to terminate the restated CMI agreement, unless we maintain the minimum on-time reliability threshold during a 60-day cure period. If DHL terminates the CMI agreement due to an ABX event of default, we would be subject to a monetary penalty payable to DHL.

If our airlines fail to maintain aircraft on-time reliability above a minimum threshold under the ATSA with ASI for either a specified number of consecutive calendar months or a specified number of calendar months (whether or not consecutive) in a specified trailing period, we could be held in default. In that event, ASI may elect to terminate the ATSA and pursue those rights and remedies available to it at law or in equity.

If OAI fails to maintain aircraft on-time reliability above a minimum threshold under its contract with the DoD with respect to the flight segments flown during a given month, we could be held in default. In that event, the DoD may elect to terminate the contract. In addition, missions that experience carrier controllable delays are subject to monetary penalties. Depending on the delay interval, the compensation paid to OAI for the performance of the services can be reduced by a specified percentage amount.

Customers and Market Risk

A limited number of key customers are critical to our business and the loss of one or more of such customers could materially adversely affect our business, results of operations and financial condition.

Our business is dependent on a limited number of key customers. There is a risk that any one of our key customers may not renew their contracts with us on favorable terms or at all, perhaps due to reasons beyond our control. As discussed in the risk factor below, certain key customers have the ability to terminate their agreements in advance of the expiration date.

The actual demand for Boeing 777, 767, 757 and Airbus A321 and A330 aircraft may be lower than we anticipate. Customers may develop preferences for other aircraft types, instead of the aircraft that make up our fleet, and we may not be able to secure replacement aircraft or additional capital for our fleet. The actual lease rates for aircraft available for lease may be lower than we projected, or new leases may start later than we expect. Further, other airlines and lessors may be willing to offer aircraft to the market under terms more favorable to lessees. In the event of any of the foregoing occurrences, we could experience a material adverse effect on our financial position, results of operations or cash flows.

Geopolitical uncertainties could result in reduced revenues

Beginning in February 2022, the war in Ukraine escalated. On October 7, 2023, war started in Israel. These wars, or the development of military conflicts or geopolitical uncertainties in other regions, may impact our customers' operations and their ability to meet their commitments and pay for our services. We have experienced and may experience disruptions to our operations due to shortages of personnel, parts shortages, maintenance delays, shortages of transportation and hotel accommodations for flight crews, information systems outages, disruption of data transmissions, reduced customer flight schedules and other issues which could stem from geopolitical tensions, cyber attacks or virus outbreaks effecting us, our suppliers or our customers.

Table of Contents

Inflation and expenses may outpace customer rate increases.

General inflation in the United States declined during 2024 before arriving at the end of the year at a level that is still somewhat elevated compared to many previous years and that could increase in 2025 and beyond. Although a large portion of our operating costs are contractual with escalation clauses, the price escalation clauses may be insufficient to counteract prolonged or elevated rates of inflation, and a portion of our costs are subject to inflationary pressures. Salaries, wages and contract labor rates of individuals may continue to come under inflationary pressures to keep up with market demands. We have experienced, and may continue to experience increased costs to retain and attract employees. Additionally parts, materials, travel accommodations and shipping costs may increase. Any of these circumstances continuing for a prolonged period of time, without the ability to increase our prices at a sufficient rate or adequately reduce costs, may negatively impact our financial results.

Under the terms of our airline operating and aircraft lease agreements, customers may be able to terminate the agreements prior to their expiration date for reasons unrelated to our performance.

Customers can typically terminate for convenience one or more of the aircraft we operate for them under an airline operating agreement at any time during the term, subject to a 60-day notice period and paying us a fee. Additionally, our aircraft lease agreements may contain provisions for terminating an aircraft lease for convenience, including a notice period and paying a lump sum amount to us.

ASI may terminate the ATSA in its entirety after providing 180 days of advance notice and paying to the Company a termination fee which reduces over the term of the agreement. DHL may terminate the CMI agreement in its entirety after providing 180 days of advance notice and paying a termination fee which reduces during the term of the agreement. In the event of a termination by ASI, DHL, DoD, or any other key customer, we could experience a material adverse effect on our financial position, results of operations or cash flows.

We may have disputes with our customers.

From time to time, we may have disputes with customers over contractual terms such as performance levels, service obligations, billing rates, cost responsibilities, return conditions and other matters. Our customer contracts often stipulate procedures for dispute resolution. The resolution of such disputes, if they arise, may result in unexpected financial costs or outcomes that would have a material adverse effect on our financial position, results of operations or cash flows.

The DoD or other government agencies may not renew our contracts or may reduce the number of routes that we expect to operate.

Our contracts with the DoD are typically for a fixed duration and are not required to be renewed. The DoD may terminate the contracts for convenience or in the event we were to fail to satisfy reliability requirements or for other reasons. The number and frequency of routes are sensitive to changes in military priorities and U.S. defense budgets, which are not necessarily correlated with any specific economic cycle and, together with budgets for non-DoD agencies, may be adversely impacted by any failure by Congress to approve future budgets on a timely basis.

The majority of OAI's business currently consists of flights chartered by the DoD for the transportation of DoD personnel and a significant amount of ATI's revenue is derived from flights for the DoD. Increased competition from other airlines to bid the same routes or a downturn or other change in the DoD's or other government agencies' need for such services could adversely affect our operating results.

Lessees of our aircraft may fail to make contractual payments or fail to maintain the aircraft as required.

Our financial results depend in part on our lease customers' ability to make lease payments and maintain the related aircraft. Our customers' ability to make payments could be adversely impacted by changes to their financial liquidity, competitiveness, economic conditions and other factors. A default of an aircraft lease by a customer could negatively impact our operating results and cash flows and result in our right to repossession of the aircraft, which we may be unable to accomplish timely or at all.

Table of Contents

While we often require leasing customers to pay monthly maintenance deposits, customers are normally responsible for maintaining our aircraft during the lease term. Failure of a customer to perform required maintenance and maintain the appropriate records during the lease term could result in higher maintenance costs, a decrease in the value of the aircraft, a lengthy delay in or even our inability to redeploy the aircraft in a subsequent lease, any of which could have an adverse effect on our results of operations and financial condition.

The economic conditions in the United States and in other geographies may negatively impact the demand for our aircraft and services.

Air transportation volumes are strongly correlated to general economic conditions, including the price of aviation fuel. An economic downturn could reduce the demand for delivery services offered by DHL, ASI and other delivery businesses, in particular expedited shipping services utilizing aircraft, as well as the demand for the chartered passenger flights OAI operates. Further, during an economic slowdown, cargo customers generally prefer to use ground-based or marine transportation services instead of more expensive air transportation services. Accordingly, an economic downturn could reduce the demand for airlift and aircraft leases.

Additionally, if the price of aviation fuel rises significantly, the demand for aircraft and air transportation services may decline. During periods of downward economic trends and rising fuel costs, freight forwarders and integrated delivery businesses are more likely to defer market expansion plans. When the cost of air transportation increases, the demand for passenger transportation may decline.

On occasion, declines in demand may stem from other uncontrollable factors such as geopolitical tensions or conflicts, trade embargoes or tariffs, and human health crises. We may experience delays in the deployment of available aircraft with customers under lease, ACMI or charter arrangements and our revenues may be adversely affected.

Aircraft leasing generally has also experienced periods of aircraft oversupply in times past and could experience such circumstances again in the future. Certain airlines that lease aircraft from us may experience weaknesses in demand from time to time from the large integrators and markets they serve. This could lead to a breakage in scheduled lease revenues from one or more customers, which could have an adverse effect on our future operating results.

A reduction in customer demand for aircraft maintenance facilities could negatively impact our financial results.

We lease and operate a 310,000 square foot, four-hangar aircraft maintenance facility and a 100,000 square foot component repair shop in Wilmington, Ohio. Additionally, we lease and operate a 311,500 square foot, two-hangar aircraft maintenance complex in Tampa, Florida. Accordingly, a large portion of the operating costs for our aircraft maintenance and conversion business are fixed. As a result, we need to retain existing aircraft maintenance business levels to maintain a profitable operation. The actual level of revenues may not be sufficient to cover our operating costs. Additionally, revenues from aircraft maintenance can vary among periods due to the timing of scheduled maintenance events and the completion level of work during a given period.

Strategic investments in other businesses may not result in the desired benefits.

We enter into joint venture and other business acquisition and investment agreements from time to time with the expectation that such investments will result in various benefits including revenue growth through geographic diversification and product diversification, improved cash flows and better operating efficiencies. The process to identify such investments may divert management’s attention and expose us to unanticipated liabilities and costs. Also, we may not be able to identify attractive investments on terms beneficial to us, and even if we do, achieving the anticipated benefits from such agreements is subject to a number of challenges and uncertainties. The expected benefits may be only partially realized or not at all, or may take longer to realize than expected, which could adversely impact our financial condition and results of operations.

Table of Contents

We may be a party to litigation, investigations, or other legal proceedings, whether in the normal course of business or otherwise, which could affect our financial position, results of operations, cash flows, and liquidity.

From time to time, we are a party to or otherwise involved in legal proceedings, claims and government inspections or investigations and other legal matters, both inside and outside the U.S., whether arising in the ordinary course of our business or otherwise. We are currently involved in various legal proceedings and claims that have not yet been fully resolved, and additional claims may arise in the future. See also the risks described in this Item 1A under the headings “Risks Related to the Merger – We are the target of lawsuits challenging the Merger Agreement that may prevent the Merger from being consummated within the expected timeframe or at all” Legal proceedings can be complex and take many months, or even years, to reach resolution, with the final outcome depending on a number of variables, some of which are not within our control. Litigation is subject to significant uncertainty and may be expensive, time-consuming, and disruptive to our operations. Although we expect we will vigorously defend ourselves in such legal proceedings, their ultimate resolution and potential financial and other impacts on us are uncertain, and may vary based upon a variety of factors, including our judgment of potential benefits and risks. For these and other reasons, we may choose to settle legal proceedings and claims, regardless of their actual merit. If a legal proceeding is resolved against us, it could result in significant compensatory damages, and in certain circumstances punitive or trebled damages, disgorgement of revenue or profits, remedial corporate measures or injunctive relief imposed on us. If our existing insurance does not cover the amount or types of damages awarded, or if other resolution or actions taken as a result of the legal proceeding were to restrain our ability to operate or market our services, our consolidated financial position, results of operations, cash flows, or liquidity could be materially adversely affected. In addition, legal proceedings, and any adverse resolution thereof, can come as a result of or lead to adverse publicity and damage to our reputation, which could adversely impact our business.

Risks Related to Business Interruptions and Cybersecurity Incidents

Our operating results could be negatively impacted by disruptions of our information technology and communication systems and data breaches.

Our businesses depend heavily on information technology, computerized systems and data transmissions to operate effectively. We continue to expand our reliance on third party providers for technical support, management, and hosting of systems. Our systems and technologies, or those of third parties on which we rely, could fail or become unreliable due to equipment failures, software viruses, ransomware attacks, malware attacks, cyberattacks, natural disasters, power failures, data transmission disruptions, telecommunication outages, or other causes. Hackers, foreign governments, cyber-terrorists and cyber-criminals, acting individually or in coordinated groups, may launch distributed denial of service attacks or other coordinated attacks that may cause service outages, gain inappropriate or block legitimate access to systems or information, or result in other interruptions to our business. In addition, the foregoing breaches in security could expose us and our customers, or the individuals affected, to a risk of loss, disclosure or misuse of proprietary information and sensitive or confidential data, including personal information of customers, employees and others. Certain disruptions could prevent our airlines from flying as scheduled, possibly for an extended period of time, which could have a negative impact on our financial results and operating reliability. A cybersecurity attack or system outage could limit our ability to conduct some operations or result in the complete shutdown of all of our operations. A cybersecurity attack impacting onboard or other flight systems could result in an accident or operational disruptions, which could adversely affect our reputation, regulatory oversight and financial position.

We continually monitor the risks of disruption, take preventative measures, develop backup plans and maintain redundancy capabilities. The measures we use may not prevent the causes of disruptions we could experience or help us recover failed systems quickly.

We depend on and interact with the information technology networks and systems of third parties for some aspects of our business operations, including our customers and service providers, such as cloud service providers. These third parties may have access to information we maintain about our company, operations, customers, employees and vendors, or operating systems that are critical to or can significantly impact our business operations. Like us, these third parties are subject to risks imposed by data breaches and information technology systems disruptions like those described above, and other events or actions that could damage, disrupt or close down their networks or systems. Security processes, protocols and standards that we have implemented and contractual provisions requiring security measures that we may have sought to impose on such third parties may not be sufficient or effective at preventing such events. These events could result in unauthorized access to, or disruptions or denials of access to, misuse or disclosure of, information or systems that are important to our business, including proprietary information, sensitive or confidential data, and other information about our operations, customers, employees and suppliers, including personal information. Any of these events that impact our information technology networks or systems, or those of customers, service providers or other third parties, could result in disruptions in our operations, the loss of existing or potential customers, damage to our brand and reputation, regulatory scrutiny, and litigation and potential liability for us.

Table of Contents

Our systems are subject to evolving cybersecurity threats. Our exposure to cybersecurity risk also increases as we expand the number of airports and locations at which we operate, as well as the number of employees working from remote locations. Part of our insurance program provides coverage for cybersecurity incidents, but in the event of such an incident, the amount or nature of our insurance coverage may prove to be inadequate for reasons we were unable to foresee. The costs of maintaining safeguards, recovery capabilities and preventive measures may continue to rise. Further, the costs of recovering or replacing a failed system could be very expensive.

Among other consequences, our customers’ confidence in our ability to protect data and systems and to provide services consistent with their expectations could be negatively impacted, further disrupting our operations. Similarly, an actual or alleged failure to comply with applicable U.S. or foreign data protection regulations or other data protection standards may expose us to litigation, fines, sanctions or other penalties. As regulations and expectations evolve, we may incur significant costs to upgrade and bring our systems and processes into compliance.

Severe weather or other natural or anthropogenic disasters and epidemics could adversely affect our business.

Air transportation has historically been disrupted, sometimes severely, by the occurrence of unexpected events outside of our and our customers’ control. Severe weather conditions and other natural or anthropogenic disasters, including storms, floods, fires or earthquakes, epidemics or pandemics, conflicts or unrest, or terrorist attacks, whether directly affecting our flight operations or impacting the air transportation industry in general, may result in decreased revenues, including as our customers reduce their transportation needs, or increased costs to operate our business, which could have a material adverse effect on our results of operations for an indeterminate period of time. Any such event affecting one of our major facilities could result in a significant interruption in or disruption of our business.

Our operating results may be impacted by outbreaks of highly contagious diseases, or other health crises, and the various government, industry and consumer actions related thereto

The COVID-19 pandemic had an adverse impact on our availability of labor resources resulting in increased labor costs to maintain sufficient staffing for operations. Our operations could be negatively affected if our own personnel or those of our suppliers and customers are quarantined or sickened as a result of exposure to COVID-19 or the effects of another disease or health crisis, or if they are subject to governmental actions including curfews or “shelter in place” health orders. We staff personnel near airports to sort customer packages, load aircraft and maintain related equipment. A COVID-19 or other pandemic outbreak or health crisis at certain maintenance facilities, customer sorting centers or airports could result in workforce shortages or closures causing reduced revenues and higher expenses.

In addition to workforce shortages, a COVID-19 or other pandemic outbreak or health crisis may result in parts shortages, maintenance delays, shortages of transportation and hotel accommodations for flight crews, and declines in the value of our aircraft and other assets, any of which could result in reduced revenues and additional expenses. Similarly, the effects of such a crisis could result in the slower completion of aircraft freighter conversions which in turn would disrupt our aircraft leasing operations. Our customer base for aircraft maintenance revenues includes passenger airlines. Our operating results could be adversely impacted by a COVID-19 or other pandemic outbreak or health crisis if passenger airlines reduce their needs for scheduled heavy airframe maintenance.

Third-Party Reliance Risk

Global supply chain disruptions and macroeconomic or geopolitical uncertainties could impact our financial results.

Pandemic fears, economic recession concerns, geopolitical uncertainties and other macroeconomic factors have led to global supply chain disruptions and other delays and uncertainties in recent years. In particular, the aircraft conversion operations that we contract to third parties rely on part manufacturers and labor from several global sources, any adverse impact to which could delay aircraft deployments to our customers. The war in Ukraine or the development of instabilities in other regions of the globe may result in further supply chain disruptions. Our businesses may experience delays in receiving parts from our global supply chain partners for aircraft conversions, and prolonged disruptions to the supply chain would impact the completion of aircraft and our corresponding leases to customers. Additionally, when coupled with inflationary pressures, such delays could have a significant impact on overall economic conditions as well as our operations and financial results.

Table of Contents

Israel is the location of our primary vendor that converts our Boeing 767-300 passenger aircraft into freighters. The Israel-Hamas war and other regional conflicts may impact the progress of aircraft conversions, particularly those produced in Israel. The conflict may create labor shortages and slow the availability of required parts, resulting in the delayed completion of aircraft modification projects and pushing our contractual obligations into later periods. Such delays and reductions may have a material adverse effect on our capital resources, financial condition, results of operation and liquidity.

We rely on third parties to modify aircraft and provide aircraft and engine maintenance.

We rely on third party aircraft modification service providers, including in Israel, which is subject to the war described above, and third party aircraft and engine maintenance service providers that have expertise or resources that we do not have. Third party service providers may seek to impose price increases that could negatively affect our competitiveness in the airline markets. An unexpected termination or delay involving service providers could have a material adverse effect on our operations and financial results. A delay in an aircraft modification could adversely impact our revenues and our ability to place the aircraft. We must manage third party service providers to meet schedules and turn-times and to control costs in order to remain competitive to our customers.

We rely on a limited number of engine maintenance providers for our engines that power our fleet of aircraft. If our providers do not complete the refurbishment of our engines within the contractual turn-times or if an unplanned replacement of a maintenance provider is required due to the deterioration of their performance, a contract dispute or some other reason, our operations and financial results may be adversely impacted. Further, if replacement engines cannot be sourced or if the cost of replacement engines increases, our operations and financial results may be adversely impacted.

Financial Risks

Our Senior Credit Agreement and our Senior Notes include covenants that could limit our operating and financial flexibility, and our Convertible Notes may be subject to acceleration in the event of a cross-default.

The Senior Credit Agreement contains covenants including, among other requirements, limitations on certain additional indebtedness and guarantees of indebtedness. The Senior Credit Agreement is collateralized by certain of our Boeing 777, 767 and 757 aircraft. Under the terms of the Senior Credit Agreement, we are required to maintain aircraft collateral coverage equal to 125% of the outstanding balance of the revolving credit facility. We also have various outstanding notes, including $500.0 million in senior unsecured notes issued January 2020 (the “Senior Notes”), $200.0 million of additional notes issued April 2021 (the “Additional Notes”) under the existing Senior Notes, and $400.0 million in convertible notes issued August 2023 (the "2023 Convertible Notes"). Our Senior Notes and related Indenture also include a number of restrictions and covenants including limitations on our ability to incur additional indebtedness, grant liens, make investments, repurchase or redeem capital stock, pay dividends, enter into transactions with affiliates, merge with other entities or transfer or sell assets. Our 2023 Convertible Notes contain certain cross-default provisions that may be triggered if we were to breach one of our other debt agreements without achieving an adequate cure. The covenants under the Senior Notes, which are generally no more restrictive than those set forth in the Senior Credit Agreement, are subject to exceptions and qualifications as described in the Indenture. Complying with these covenants in the Senior Credit Agreement and the Senior Notes may impair our ability to finance our operations or capital needs or to take advantage of other business opportunities. Our ability to comply with these covenants will depend on our future performance, which may be affected by events beyond our control. Our failure to comply with these covenants would represent an event of default. An event of default under the Senior Credit Agreement or the Senior Notes could result in all indebtedness thereunder, as well as under the 2023 Convertible Notes, being declared due and payable immediately, which could have an adverse effect on our financial position and results of operations.

Operating results may be affected by fluctuations in interest rates.

We enter into interest rate derivative instruments from time to time in conjunction with our debt levels. We typically do not designate the derivative instruments as hedges for accounting purposes. Future fluctuations in the Secured Overnight Financing Rate ("SOFR") will result in the recording of gains and losses on interest rate derivatives that we hold.

Under the Senior Credit Agreement, interest rates are adjusted monthly based on the prevailing SOFR rates and may be adjusted at any time for prime rates and a ratio of our outstanding debt level to earnings before interest, taxes, depreciation and amortization expenses ("EBITDA"). At our current debt-to-EBITDA ratio, the revolving credit facility bears variable interest rates of 6.69% per annum. In addition to the impact of higher SOFR rates, additional debt or lower EBITDA may also result in higher interest rates on the variable rate portion of our debt. Higher interest rates may adversely impact our operating results.

Table of Contents

We sponsor defined benefit pension plans and post-retirement healthcare plans for certain eligible employees. Our related pension expense, the plans' funded status and funding requirements are sensitive to changes in interest rates. The plans' funded status and annual pension expense are recalculated at the beginning of each calendar year using the fair value of plan assets and market-based interest rates at that point in time, as well as assumptions for asset returns and other actuarial assumptions. Future fluctuations in interest rates, including the impact on asset returns, could result in the recording of additional expense and require additional contributions for pension and other post-retirement healthcare plans.

The costs of insurance coverage or changes to our reserves for self-insured claims could affect our operating results and cash flows.

We are self-insured for certain claims related to workers’ compensation, aircraft, automobile, general liability and employee healthcare. We record a liability for reported claims and an estimate for incurred claims that have not yet been reported. Accruals for these claims are estimated utilizing historical paid claims data and recent claims trends. Changes in claim severity and frequency could negatively impact our results of operations and cash flows.

Our future earnings and earnings per share, as calculated and presented in accordance with accounting principles generally accepted in the United States ("GAAP"), will be impacted by the warrants to acquire ATSG's common stock held by Amazon.

The warrants held by Amazon are subject to fair value measurements during periods that they are outstanding. Accordingly, future fluctuations in the fair value of the warrants held by Amazon are expected to adversely impact our reported earnings measures from time to time. See Note C in the accompanying consolidated financial statements for further information about the warrants held by Amazon.

The market price of ATSG’s common stock is subject to fluctuation due to a variety of market and other factors, including that if Amazon exercises its right to acquire shares of ATSG's common stock pursuant to the outstanding warrants it holds, such exercise will dilute the ownership interests of ATSG's then-existing stockholders and could adversely affect the market price of ATSG's common stock.

The trading price of ATSG's common stock is subject to material fluctuations in response to a variety of factors, including the pendency of the Merger, quarterly variations in our operating results, conditions of the air cargo industry and global economic conditions or other events and factors that are beyond our control. In the past, following periods of significant volatility in the overall market and in the market price of other companies’ securities, securities class action litigation has been instituted against these companies in some circumstances. If this type of litigation were instituted against us following a period of volatility in the market price for our common stock, it could result in substantial costs and a diversion of our management's attention and resources, which could have a material adverse effect on our business, results of operations and financial condition. In addition, if Amazon exercises its right to acquire shares of ATSG's common stock pursuant to the warrants, it will dilute the ownership interests of our then-existing stockholders and reduce our earnings per share. Any sales in the public market of ATSG's common stock issuable upon the exercise of the warrants by Amazon could also adversely affect prevailing market prices of ATSG's common stock.

Changes in the fair value of certain financial instruments could impact our financial results.

Certain financial instruments, including warrants issued to Amazon, are subject to fair value measurements at the end of each reporting period. Accordingly, future fluctuations in their fair value may adversely impact our reported earnings.

We may need to reduce the carrying value of our assets.

We own a significant amount of aircraft, aircraft parts and related equipment. The removal of aircraft from service or continual losses from aircraft operations could require us to evaluate the recoverability of the carrying value of those aircraft, related parts and equipment and record an impairment charge through earnings to reduce the carrying value. Additionally, our balance sheet reflects assets for income tax carryforwards and other deferred tax assets. Our ability to use our NOLs and other carryforwards depends on the amount of taxable income generated in future periods. NOL carryforwards are subject to adjustment on audit by the Internal Revenue Service and other respective taxing authorities.

We have recorded goodwill and other intangible assets related to acquisitions and equity investments. If we are unable to achieve the projected levels of operating results, it may be necessary to record an impairment charge to reduce the carrying value of goodwill, equity investments and related intangible assets. Similarly, if we were to lose a key customer or one of our airlines were to lose its authority to operate, it could be necessary to record an impairment charge.

Table of Contents

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 1C. CYBERSECURITY

Our management team views cybersecurity risk management as an important strategic topic. Our cybersecurity strategy utilizes the cybersecurity framework developed by the National Institute of Standards and Technology (“NIST CSF”). The NIST CSF is a voluntary framework of practices to identify, protect, detect, respond to, and recover from cybersecurity risks. Using the NIST CSF does not mean that we meet any particular technical standards or certifications, but rather that we use the NIST CSF to help us identify, assess, and manage cybersecurity risks relevant to our business. Using the NIST CSF, we form our cybersecurity plans and prioritize our activities using a risk-based approach which begins with the identification and evaluation of cybersecurity risks and threats that could disrupt our operations, safety procedures and regulatory compliance. Cybersecurity risks and related mitigation efforts are prioritized based on their potential impact severity, likelihood and vulnerability. Risk mitigation strategies include the application of cybersecurity policies and procedures, implementation of technology-based tools and controls, as well as employee training, education, and awareness initiatives. Our cybersecurity risk management includes ongoing monitoring of networks and systems for potential signs of suspicious activity. We track key performance indicators and cybersecurity metrics to evaluate the effectiveness of our cybersecurity safeguards and practices. We have established an incident response plan designed to promptly contain and remediate cybersecurity incidents.

We rely increasingly on software applications, data transmissions and cybersecurity safeguards provided by or in conjunction with third parties to maintain our cybersecurity posture and evolve with the threat environment. We engage third party resources to assess our procedures, test safeguards, provide training and monitoring, and assess our vulnerabilities. We evaluate third party service providers from a cybersecurity risk perspective, which may include an assessment of that service provider’s cybersecurity posture and data security standards.

ATSG management has overall responsibility for assessing and managing risks from cybersecurity threats to our operations. Management has a supervisory team that consists of the Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Vice President and Controller, and the Vice President of Information Technology, which meets regularly. The Vice President of Information Technology has primary responsibility for the execution of our cybersecurity risk management program and keeps the broader team informed about the detection, mitigation, and remediation of cybersecurity risks and incidents. The Vice President of Information Technology and the Company's other information technology and security department personnel include individuals with advanced university degrees in cybersecurity and years of technology management experience in matters such as conducting threat assessments, cyber mitigation and incident response.

While the Board has the primary responsibility for risk oversight, the Audit Committee assists the Board in fulfilling its oversight responsibility with respect to the management of cybersecurity-related risks. Through its Cybersecurity Subcommittee, the Audit Committee periodically reviews and discusses with management, including the Vice President of Information Technology, (i) the Company’s information security strategy, priorities and objectives; (ii) the Company’s technology and information security risks, including with respect to cybersecurity and data privacy; and (iii) the steps management has taken to manage cybersecurity risk.

In 2024, we did not identify any risks from cybersecurity threats, including as a result of any cybersecurity incidents, that have materially affected or that are reasonably likely to materially affect us, including our business strategy, results of operations and financial condition. However, the nature of potential cybersecurity risks and threats are uncertain, and any future incidents, outages or breaches may materially affect our business strategy, results of operations or financial condition. For additional discussion of potential risks regarding cybersecurity, please see the information contained in Risks Related to Business Interruptions and Cybersecurity Incidents in Part 1A of this Form 10-K.

Table of Contents

ITEM 2. PROPERTIES

Principal Facilities

We lease portions of an air park in Wilmington, Ohio, under lease agreements with a regional port authority, the terms of which expire in June 2026 and June 2036 with options for us to extend the terms. The leases include corporate offices, 310,000 square feet of maintenance hangars and a 100,000 square foot component repair shop at the air park. We also have the non-exclusive right to use the Wilmington airport, which includes one active runway, taxiways and ramp space. We also lease and operate a 311,500 square foot, two hangar aircraft maintenance complex at the Tampa International Airport in Florida. Our CAM and ACMI Services reportable operating segments, together with our other business lines, make use of these facilities. We lease approximately 82,500 square feet of office and warehouse space at the Tulsa International Airport in Oklahoma, which is primarily used in ACMI Services.

Other Facilities

We lease a facility having approximately 335,000 square feet in Chicago, Illinois and another facility having approximately 100,000 square feet in Orlando, Florida for our USPS mail handling contracts. In addition, we lease smaller maintenance stations, offices and ramp space at certain airport and regional locations, typically on a short-term basis. Further, we lease warehousing space inside or near certain U.S. airports to support our customers' parcel handling requirements. The facilities in this paragraph are primarily used in ACMI Services and our other lines of business (other than CAM).

Aircraft Fleet

As of December 31, 2024, our in-service aircraft fleet consisted of 112 Boeing aircraft and three Airbus aircraft that we owned and 33 Boeing aircraft leased from third parties. The majority of these aircraft were formerly passenger aircraft that have been modified for cargo operations. These cargo aircraft are generally described as being mid-size or having medium wide-body cargo capabilities. The cargo aircraft carry gross payloads ranging from approximately 47,900 pounds to 129,000 pounds and are well suited for intra-continental flights and medium range inter-continental flights. The table below shows the combined fleet of aircraft in service condition as of December 31, 2024.

	In-service Aircraft as of December 31, 2024
				Customer	Year of	Gross Payload	Still Air Range
Aircraft Type	Total	Owned	Operating Lease	Provided	Manufacture	(Lbs.)	(Nautical Miles)

767-200 SF (1)	17	15	—	2	1982 - 1985	85,000 -100,000	1,700 - 5,300
767-200 Passenger	3	2	1	—	2001	63,000 - 73,000	6,500 - 7,600
767-300 SF (1)	108	83	—	25	1988 - 2010	121,000 - 129,000	3,200 - 7,100
767-300 Passenger	10	5	5	—	1991 - 2002	85,000 - 99,700	6,300 - 7,200
777-200 Passenger	3	3	—	—	2004 - 2007	119,500 - 123,900	8,700 - 9,500
757-200 Combi (2)	4	4	—	—	1989 - 1994	58,000	2,600 - 4,300
A321-200 PCF (1)	3	3	—	—	2002 - 2003	59,680	2,140
Total in-service	148	115	6	27

(1)	These aircraft are configured for standard cargo containers loaded through large standard main deck cargo doors.

(2)	These aircraft are configured as “combi” aircraft capable of simultaneously carrying passengers and cargo containers on the main deck.

In addition, as of December 31, 2024 CAM owned other aircraft not presently in service, including five Airbus 321-200 PCF which had completed the standard freighter conversion and are expected to be leased in 2025. CAM also owns seven Boeing 767-300 aircraft, one Airbus A321-200 aircraft and six Airbus A330 aircraft which were undergoing or preparing to undergo modification to a standard freighter configuration and are expected to be completed in 2025 or 2026.

We believe that our existing facilities and aircraft fleet are appropriate for our current operations. As described in Note H to the accompanying financial statements, we plan to invest in additional aircraft to meet our growth plans. We may make additional investments in aircraft and facilities if we identify favorable opportunities in the markets that we serve.

Table of Contents

ITEM 3. LEGAL PROCEEDINGS

We are currently a party to legal proceedings in various federal and state jurisdictions arising out of the proposed Merger and operation of our business. The amount of alleged liability, if any, from these proceedings cannot be determined with certainty; however, we believe that the Company's ultimate liability, if any, arising from the pending legal proceedings, as well as from asserted legal claims and known potential legal claims which are probable of assertion, taking into account established accruals for estimated liabilities, should not be material to our financial condition or results of operations. In addition, we carry various forms of aviation, commercial, property and casualty, cybersecurity, product liability, and other forms of insurance; however, such insurance may not be applicable or adequate to cover the costs associated with a judgment against us.

For more information on various legal proceedings, see the discussion in Note H to our Consolidated Financial Statements included in Item 8, of this Form 10-K. The information set forth therein related to legal proceedings is incorporated into this Item 3 by reference.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable

Table of Contents

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

ATSG's common stock is publicly traded on The Nasdaq Stock Market under the symbol "ATSG." The closing price of ATSG’s common stock was $22.33 on February 28, 2025.

Holders

On February 28, 2025, there were approximately 1,082 stockholders of record of ATSG’s common stock.

Dividends

We currently do not pay a dividend. Future dividends, if any, and the timing of declaration of any such dividends, will be at the discretion of the Board and will depend upon many factors including, but not limited to, certain restrictions that we have on our ability to pay dividends. We are restricted under the Merger Agreement from declaring and paying a dividend on ATSG's common stock. We are also restricted from paying dividends on our common stock in excess of $100.0 million during any calendar year under the provisions of the Senior Credit Agreement. Additionally, the Senior Notes and related Indenture generally restrict our ability to pay dividends on or make distributions in respect of capital stock or make certain other restricted payments or investments, subject to certain exceptions therein including, upon the satisfaction of certain conditions, the making of permitted dividends up to $100.0 million during any calendar year and other additional permitted dividends, investments and other restricted payments not to exceed the amounts set forth therein.

Purchases of equity securities by the issuer and affiliated purchasers

The Senior Credit Agreement permits cash dividends and share repurchases provided the secured leverage ratio is less than 3.00 to 1.00 and the total leverage ratio is less than 3.50 to 1.00 after giving effect to the repurchase or dividend. (For additional information about the Senior Credit Agreement, see Note F to the accompanying consolidated financial statements.) We are restricted under the Merger Agreement from repurchasing ATSG’s common stock, except in connection with the requirement under certain of our benefit plans or in connection with the conversion of the 2023 Convertible Notes in connection with the Merger.

On July 27, 2023, the Board authorized the repurchase of up to $120.0 million of ATSG's outstanding common stock (the "2023 Repurchase Program") exclusively in conjunction with a convertible bond offering that the Company was marketing at that time. The 2023 Repurchase Program is separate from the 2022 Repurchase Program described below. The Company subsequently purchased shares in August 2023. The Company did not purchase any ATSG common stock under the 2023 Repurchase Program during the fourth quarter of 2023. The remaining available authorization under the 2023 Repurchase Program is $1.5 million which can only be used in conjunction with the repurchase of our 2017 Convertible Notes.

In addition, on November 29, 2022, the Board authorized the repurchase of up to $150.0 million of ATSG's outstanding common stock (the "2022 Repurchase Program"). The 2022 Repurchase Program does not require the repurchase of a specific number of shares or establish a time frame for any repurchase and the Board may terminate the 2022 Repurchase Program at any time. Subject to any applicable restrictions, repurchases may be made under the 2022 Repurchase Program from time to time in the open market or in privately negotiated transactions. There is no expiration date for the 2022 Repurchase Program. The Company did not purchase any ATSG common stock under the 2022 Repurchase Program during the fourth quarter of 2024. As of December 31, 2024, the remaining available authorization under the 2022 Repurchase Program was $103.5 million.

Table of Contents

Performance Graph

The following performance graph and related information shall not be deemed “soliciting material” or to be “filed” with the SEC, nor shall the information be incorporated by reference into any future filing under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that the Company specifically incorporates it by reference into such filing.

The graph below compares the cumulative total stockholder return on a $100 investment in ATSG’s common stock with the cumulative total return of a $100 investment in the Nasdaq Composite Index and the cumulative total return of a $100 investment in the Nasdaq Transportation Index for the period beginning on December 31, 2019 and ending on December 31, 2024.

	12/31/2019		12/31/2020		12/31/2021		12/31/2022		12/31/2023		12/31/2024
Air Transport Services Group, Inc.		100.00		133.59		125.23		110.74		75.06		93.69
Nasdaq Composite Index		100.00		144.92		177.06		119.45		172.77		223.87
Nasdaq Transportation Index		100.00		106.29		120.41		97.55		130.87		133.76

Table of Contents

ITEM 6. [RESERVED]

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following Management’s Discussion and Analysis has been prepared with reference to our historical financial condition and results of operations. It should be read in conjunction with the accompanying consolidated financial statements and related notes included in Item 8 of this Form 10-K as well as Strategy described in Item 1 of this Form 10-K. Certain statements we make in this Item 7 constitute forward-looking statements under the Act. You should consider our forward-looking statements in light of the “Cautionary Note Regarding Forward-Looking Statements” preceding Part I of this Form 10-K and the risks discussed under the heading “Risk Factors” in Item 1A of this Form 10-K.

OVERVIEW

We provide aircraft leasing and air cargo transportation and related services. Our total in service fleet was composed of 148 freighter and passenger aircraft as of December 31, 2024. To support the needs of our leasing customers and customers in the aviation and logistics industries at large, we offer a broad array of complementary solutions ranging from flight and ground operations to aircraft maintenance, repair, and overhaul services. Our principal subsidiaries include our aircraft leasing company (CAM) and three independently certificated airlines (ABX, ATI and OAI).

We primarily operate through two reportable segments, CAM and ACMI Services:

CAM offers aircraft leasing and related services. Through CAM we acquire used medium wide-body and narrow-body passenger aircraft and manage their conversion into freighter configuration. We lease the aircraft externally to third party customers, as well as internally to our own airline subsidiaries, typically for lease terms of up to ten years. CAM currently leases Boeing 767, 757 and 777 aircraft, Airbus A321 freighter aircraft and aircraft engines, and is in the process of adding Airbus A330 freighter aircraft to its fleet. Demand for medium widebody and narrow-body freighters is driven primarily by express delivery networks. To expand and diversify our freighter fleet, we secured aircraft conversion slots through 2027. We partner with IAI, Boeing and EFW for passenger aircraft conversions and also perform our own conversions of the Airbus A321 aircraft through our joint venture arrangement 321 Precision Conversions, LLC.

ACMI Services consists of the cargo and passenger operations of our three airline subsidiaries. Our airlines operate under contracts to provide a combination of aircraft, flight crews, aircraft maintenance, aircraft hull and liability insurance and aviation fuel. Our customers are typically responsible for supplying the necessary aviation fuel and cargo handling services and reimbursing our airline for other operating expenses such as landing fees, ramp expenses, certain aircraft maintenance expenses and fuel procured directly by the airline. Aircraft charter agreements, including passenger services for the DoD, usually require the airline to provide full service, including fuel and other operating expenses for a fixed, all-inclusive price.

Our other business operations, which primarily provide support services to the transportation industry, include providing aircraft maintenance and modification services to customers, cargo load transfer and sorting services as well as related equipment maintenance services. These operations do not constitute reportable segments.

At December 31, 2024, we owned 112 Boeing aircraft and three Airbus aircraft that were in revenue service. We also own aircraft that were not in revenue service, including five Airbus A321-200 freighter aircraft that have completed the freighter conversion process but were not in service and are expected to be re-leased in 2025, and seven Boeing 767-300 aircraft, one Airbus 321-200 aircraft and six Airbus A330 aircraft, with such aircraft already undergoing or awaiting induction into the freighter conversion process. In addition to our owned aircraft, we leased six passenger aircraft from third parties and operated 27 freighter aircraft provided by customers.

Customers

Our largest customers are ASI, which is a subsidiary of Amazon, the DoD and DHL.

Revenues from our commercial arrangements with ASI comprised approximately 33%, 34% and 34% of our consolidated revenues during 2024, 2023 and 2022, respectively. As of December 31, 2024, we leased 30 Boeing 767 freighter aircraft to ASI with lease expirations between 2026 and 2031 and we operate those aircraft for ASI. The aircraft lease terms typically range from 5 to 10 years. We operate 21 other Boeing 767 aircraft provided by ASI. We also provide ground services and aircraft maintenance services to ASI.

Table of Contents

The DoD comprised 29%, 30% and 30% of our consolidated revenues during 2024, 2023 and 2022, respectively, derived from operating passenger and combi charter flights.

DHL comprised 14%, 12% and 12% of our consolidated revenues during 2024, 2023 and 2022, respectively. In February 2022, ATSG and DHL agreed to a six-year extension of its dry leases for five Boeing 767 freighters as well as an extension of the CMI agreement for ABX to operate aircraft through April 2028. The CMI agreement was expanded to include two additional 767 freighters. As of December 31, 2024, we leased 14 Boeing 767 freighter aircraft to DHL comprising one Boeing 767-200 aircraft and 13 Boeing 767-300 aircraft. Ten of the 14 Boeing 767 aircraft were being operated by our airlines for DHL. Additionally, as of December 31, 2024, we operated six Boeing 767 aircraft that were provided by DHL.

RESULTS OF OPERATIONS

Revenue and Earnings Summary

External customer revenues from continuing operations decreased by $108.6 million, or 5%, to $1,962.0 million during 2024 compared to 2023. Revenues were lower during 2024 for aircraft leasing, customer flying, engine power services, fuel sales and all other services. Revenues for 2023 and 2022 were $2,070.6 million and $2,045.5 million respectively. Customer revenues increased in 2023 compared to 2022 due primarily to aircraft leasing revenues while ground services declined.

During 2024, we took redelivery of nine newly converted, CAM-owned Boeing 767-300 freighter aircraft and began leasing all of these aircraft to external customers under long-term leases. We also added eleven more customer-provided aircraft to the fleet that our airlines operate under CMI agreements with such customers and we added two more passenger aircraft leased from third parties. During 2023, we took redelivery of ten newly converted CAM-owned Boeing 767-300 freighter aircraft and our first three newly converted, CAM-owned Airbus A321-200 freighter aircraft and began leasing all of these aircraft to external customers under long-term leases. Also in 2023, we added three more customer-provided aircraft to the fleet that our airlines operate for our customers under CMI agreements. During 2024 and 2023, we removed five and ten Boeing 767-200 freighter aircraft from revenue service, respectively. These Boeing 767-200 freighter aircraft have either been sold or their engines and parts have been used to support our aircraft fleet.

Consolidated earnings from continuing operations were $27.4 million for 2024 compared to $59.7 million for 2023 and $196.4 million for 2022. Pre-tax earnings from continuing operations were $42.3 million for 2024 compared to $84.2 million for 2023 and $260.5 million for 2022. Earnings were affected by the following specific events and certain adjustments that do not directly reflect our underlying operations among the years presented.

•

Pre-tax earnings included net gains of $2.8 million, net losses of $1.0 million and net gains of $9.0 million 2024, 2023 and 2022, respectively, related to the repurchase of debt as well as financial instrument fair value remeasurement revaluations, including mark to market adjustments for warrants granted to Amazon.

•

Pre-tax earnings were also reduced by $28.7 million, $18.7 million and $23.3 million for 2024, 2023 and 2022, respectively, for the amortization of customer incentives given to Amazon in the form of warrants.

•

Pre-tax earnings included net losses of $4.3 million and $37.0 million and net gains of $20.0 million for 2024, 2023 and 2022, respectively, for settlement charges and non-service components of retiree benefit plans.

•

Pre-tax earnings included losses of $2.2 million, $4.7 million and $7.6 million for 2024, 2023 and 2022, respectively, and our share of joint venture results, including engineering costs for the development of an aircraft modification for the Airbus A321.

•

Pre-tax earnings for 2023 included charges of $0.9 million to write off debt issuance costs in conjunction with the repayment of convertible debt and term loans, respectively.

•

During 2024, pre-tax earnings included $8.3 million of expenses incurred related to the Agreement and Plan of Merger with Stonepeak Nile Parent LLC.

•

Pre- tax earnings for 2023 and 2022 included losses of $0.1 million and $1.0 million, respectively, net of related insurance recoveries for the costs of employee coverage, property damage, clean-up and repairs which occurred as a direct result of a foam release after a hangar's fire suppression system malfunctioned.

Table of Contents

After removing the effects of these items, adjusted pre-tax earnings from continuing operations, a non-GAAP financial measure (a definition and reconciliation of adjusted pre-tax earnings from continuing operations and reconciliations to the pre-tax earnings from continuing operations, the most directly comparable financial measure calculated and presented in accordance with GAAP follows), were $83.0 million for 2024 $146.7 million for 2023 and $263.3 million for 2022.

Adjusted pre-tax earnings from continuing operations declined by $63.7 million for 2024 compared to 2023 and declined by $116.6 million for 2023 compared to 2022. In addition to the declines in revenues for customer flying, engine services, fuel sales and all other services, expenses increased in each of 2024 and 2023 compared to the prior year. In both years, expenses increased primarily for depreciation of newly modified Boeing 767-300 aircraft, interest expense and inflationary impacts on employee compensation, travel and aircraft parts.

A summary of our revenues and pre-tax earnings from continuing operations and adjusted pre-tax earnings from continuing operations is shown below (in thousands):

	Years Ending December 31
	2024			2023			2022
Revenues from Continuing Operations:
CAM
Aircraft leasing and related services	$	446,433		$	476,487		$	454,804
Customer incentive		(12,386	)		(15,449	)		(20,118	)
Total CAM		434,047			461,038			434,686
ACMI Services
ACMI services revenue		1,372,322			1,403,004			1,407,493
Customer incentive		(16,280	)		(3,240	)		(3,145	)
Total ACMI Services		1,356,042			1,399,764			1,404,348
Other Activities		390,662			446,506			430,326
Total Revenues		2,180,751			2,307,308			2,269,360
Eliminate internal revenues		(218,780	)		(236,697	)		(223,891	)
Customer Revenues	$	1,961,971		$	2,070,611		$	2,045,469

Pre-Tax Earnings from Continuing Operations:
CAM, inclusive of interest expense	$	58,544		$	109,415		$	143,008
ACMI Services, inclusive of interest expense		747			32,006			95,198
Other Activities		(2,052	)		(11,165	)		2,579
Net unallocated interest expense		(2,898	)		(2,362	)		(1,748	)
Net financial instrument re-measurement gain (loss)		2,796			(962	)		9,022
Merger transaction fees		(8,284	)		—			—
Settlements and other non-service components of retiree benefits costs, net		(4,341	)		(37,017	)		20,046
Loss from non-consolidated affiliate		(2,171	)		(4,740	)		(7,607	)
Debt issuance costs		—			(936	)		—
Pre-Tax Earnings from Continuing Operations		42,341			84,239			260,498
Add settlements and other non-service components of retiree benefit costs, net		4,341			37,017			(20,046	)
Add merger transaction fees		8,284			—			—
Add loss for non-consolidated affiliates		2,171			4,740			7,607
Add customer incentive amortization		28,666			18,689			23,263
Add net (gain) loss on financial instruments		(2,796	)		962			(9,022	)
Add net charges for hangar foam incident		—			97			978
Add debt issuance costs		—			936			—
Adjusted Pre-Tax Earnings from Continuing Operations (non-GAAP)	$	83,007		$	146,680		$	263,278

Table of Contents

We define adjusted pre-tax earnings from continuing operations, a non-GAAP financial measure, as pre-tax earnings from continuing operations excluding the impact of the following items: (i) pension settlement charges and other non-service components of retiree benefit costs; (ii) gains and losses for the fair value re-measurement of financial instruments including warrants issued to Amazon and, during 2022, gains from the repurchase of unsecured notes; (iii) customer lease incentive amortization; (iv) the charge-off of debt issuance costs associated with the repurchase of debt; (v) the results of non-consolidated joint ventures; (vi) charges related to the discharge of a fire suppression system in the Company's aircraft hangar, net of related insurance recoveries, and (vii) professional fees related to the Merger. We exclude these items from adjusted pre-tax earnings from continuing operations because they are distinctly different in their predictability among periods or not closely related to our ongoing operating activities. Management uses adjusted pre-tax earnings from continuing operations to compare the performance of core operating results between periods. Presenting this measure provides investors with a comparative metric of fundamental operations while highlighting changes to certain items among periods. Adjusted results should not be considered in isolation or as a substitute for analysis of our results as reported in accordance with GAAP.

Our earnings for the reported periods were impacted by the fair value re-measurement of the Amazon warrants classified in liabilities at the end of each reporting period, customer incentive amortization and the related income tax effects. The fair value of the warrants issued or issuable to Amazon was recorded as a customer incentive asset and are amortized against revenues over the duration of the aircraft leases. Our accounting for the warrants issued to Amazon has been determined in accordance with the financial reporting guidance for financial instruments. For additional information about the warrants issued to Amazon, see the accompanying notes to the financial statements.

Aircraft Fleet Summary

Our fleet of cargo and passenger aircraft is summarized in the following table as of December 31, 2024, 2023 and 2022. Our operating aircraft fleet has increased by twenty aircraft since the end of 2022. This includes four more CAM-owned aircraft, 14 more customer-provided aircraft and two more aircraft leased from external lessors. Our freighters, converted from passenger aircraft, utilize standard shipping containers and can be deployed into regional cargo markets more economically than larger capacity aircraft, newly built freighters or other competing alternatives. At December 31, 2024, we owned seven Boeing 767-300 aircraft, one Airbus A321-200 aircraft and six Airbus A330 aircraft that were either already undergoing or awaiting induction into the freighter conversion process. As of December 31, 2024, we also owned five Airbus A321-200 freighter aircraft which have completed the conversion process and are available for future lease.

Aircraft fleet activity during 2024 is listed below:

•

CAM completed the modification of nine Boeing 767-300 freighter aircraft purchased in the previous year. The aircraft have been leased to external customers under multi-year leases.

•

CAM leased three Boeing 767-300 freighters returned from external customers in the previous year. One has been leased to ATI. One has been leased to an external customer under a multi-year lease. The last one has been leased to another external customer under a multi-year lease. This aircraft is being operated by ABX under a separate agreement.

•

External customers returned four 767-300 freighters. One was leased to ABX. One was sold to a different external customer. One has been leased to another external customer under a multi-year lease. One was removed from service and its parts and engines will be used to support the fleet, re-leased or possibly sold.

•

OAI returned one Boeing 767-300 passenger aircraft to CAM and CAM leased this aircraft to an external customer under a multi-year lease.

•

OAI began to lease two Boeing 767-300 passenger aircraft from an external lessor.

•

ATI began to operate one ASI provided Boeing 767-300 freighter aircraft. ABX began to operate ten ASI provided Boeing 767-300 freighter aircraft.

•

CAM purchased four Boeing 767-300 passenger aircraft. One of these aircraft along with another Boeing 767-300 passenger aircraft purchased in 2023 were sold to an external customer. The remainder of the aircraft purchased in 2024 are expected to be converted into a standard freighter configuration. These aircraft are expected to be leased to external customers during 2025 or 2026.

Table of Contents

•

CAM leased one Boeing 767-200 freighter aircraft returned from an external customer in the previous year to another external customer under a multi-year lease.

•

CAM sold one Boeing 767-200 freighter aircraft previously leased to an external customer to that external lessee.

•

ABX returned one Boeing 767-200 freighter aircraft to CAM. This aircraft was sold to an external customer.

•

External customers returned eight Boeing 767-200 freighter aircraft to CAM. Three of these aircraft were leased to ABX and one was leased to ATI. Three aircraft were sold to different external customers. The remaining aircraft has currently been removed from service and its parts and engines will be used to support the fleet, re-leased or possibly sold.

•

CAM sold one Boeing 767-200 returned from an external lessee in 2023 and previously removed from service to a different external customer.

•

CAM completed the modification of five Airbus A321-200 freighter aircraft purchased in previous years. These aircraft are available for lease and are expected to be leased to external customers during 2025.

•

CAM purchased three Airbus A330 passenger aircraft for the purpose of converting them into a standard freighter configuration. These aircraft are expected to be leased to external customers during 2025.

	2024						2023						2022
	ACMI						ACMI						ACMI
	Services		CAM		Total		Services		CAM		Total		Services		CAM		Total
In-service aircraft
Aircraft owned
Boeing 767-200 Freighter		7		8		15		4		16		20		4		26		30
Boeing 767-200 Passenger		2		—		2		2		—		2		2		—		2
Boeing 767-300 Freighter		4		79		83		2		71		73		2		65		67
Boeing 767-300 Passenger		4		1		5		5		—		5		5		—		5
Boeing 777-200 Passenger		3		—		3		3		—		3		3		—		3
Boeing 757-200 Combi		4		—		4		4		—		4		4		—		4
Airbus A321-200 Freighter		—		3		3		—		3		3		—		—		—
Total		24		91		115		20		90		110		20		91		111
Operating lease or customer-provided
Boeing 767-200 Passenger		1		—		1		1		—		1		1		—		1
Boeing 767-300 Passenger		5		—		5		3		—		3		3		—		3
Boeing 767-200 Freighter		2		—		2		2		—		2		2		—		2
Boeing 767-300 Freighter		25		—		25		14		—		14		11		—		11
Total		33		—		33		20		—		20		17		—		17
Other aircraft
Owned
Boeing 767-300 under or awaiting modification		—		7		7		—		14		14		—		15		15
Airbus A321-200 under or awaiting modification		—		1		1		—		6		6		—		7		7
Airbus A330 under or awaiting modification		—		6		6		—		3		3		—		—		—
Airbus A321-200 available for lease		—		5		5		—		—		—		—		—		—
Boeing 767 available for lease		—		—		—		—		4		4		—		—		—

Table of Contents

As of December 31, 2024, ABX, ATI and OAI were leasing 24 in-service aircraft internally from CAM for use in ACMI Services. Of CAM's eight externally leased Boeing 767-200 freighter aircraft, one was leased to DHL and operated by ABX and seven were leased to other external customers. Of the 79 externally leased Boeing 767-300 freighter aircraft, 30 were leased to ASI and operated by ATI, nine were leased to DHL and operated by ABX, four were leased to DHL and were being operated by a DHL-affiliated airline and 36 were leased to other external customers. The carrying values of the total in-service fleet as of December 31, 2024, 2023 and 2022 were $2,060.0 million, $1,898.7 million and $1,741.7 million, respectively. The carrying value of the Airbus A321-200's available for lease was $72.6 million as of December 31, 2024.

2024 Compared to 2023

CAM

As of December 31, 2024 and 2023, CAM had 91 and 90 aircraft, respectively, under lease to external customers. CAM's revenues decreased by $27.0 million during 2024 compared to 2023. Revenues from external customers totaled $329.0 million and $354.0 million for 2024 and 2023, respectively. CAM's revenues from the Company's airlines totaled $105.1 million during 2024, compared to $107.0 million for 2023. CAM's aircraft leasing and related services revenues, which exclude customer lease incentive amortization, decreased $30.1 million in 2024 compared to 2023. Revenues decreased during 2024 due to the scheduled returns of Boeing 767-200 freighter aircraft from lease and lower hours flown by engines in our Boeing 767-200 engine power program. During 2024, CAM added nine Boeing 767-300 freighter aircraft and placed all nine of these aircraft with external customers under long-term leases. During that same time period, nine Boeing 767-200 freighter aircraft and four Boeing 767-300 freighter aircraft were returned from lease. CAM's revenues from its 767-200 engine power program decreased $17.4 million during 2024 compared to the prior year due primarily to the reduction in leased 767-200 aircraft.

CAM's pre-tax earnings, inclusive of internally allocated interest expense and the amortization of customer incentives, were $42.3 million and $109.4 million during 2024 and 2023, respectively. Pre-tax earnings were negatively impacted by reduced revenues from Boeing 767-200 leases and engines. Additionally, depreciation expense increased $33.6 million for 2024 due primarily to the addition of 19 Boeing aircraft and three Airbus A321-200 aircraft since the beginning of 2023. Reduced pre-tax earnings include $11.7 million more of internally allocated interest expense due to higher company-wide interest expense during 2024 compared to 2023.

CAM's future operating results will depend on a number of factors including additional aircraft deployments, the continued demand from lessees for mid-sized widebody freighters, our ability to convert passenger aircraft into freighters within planned costs and within the time frames required by customers and the lease rates under which aircraft are redeployed or renewed. CAM's future operating results will also depend on depreciation expense for newly modified aircraft as an aircraft reaches service condition, the sale price of aircraft which could be sold, interest expense, revenues from the utilization of the engines that power our Boeing 767-200 aircraft and other factors. Further, certain airline customers serving international routes have in recent times experienced and could further experience a weakness in demand from the large integrators and markets they serve. This could lead to a disruption in our expected revenues and cash remittances from one or more customers. CAM's pre-tax earnings are subject to changes from market interest rates and our level of debt. Changes to market conditions could affect the demand for modified aircraft or the projected returns on our fleet expansion from the outcomes currently expected, and further, management may take additional actions such as the further deferral or cancellation of planned growth investments or the divestiture of certain aircraft.

ACMI Services

Total revenues in 2024 from ACMI Services decreased $43.7 million, or 3% compared with revenues for 2023. Decreased revenues for 2024 reflected a 6% decrease in overall customer block hours during 2024. During 2024, block hours flown for our customers' delivery networks decreased 5% compared to 2023 reflecting the removal of certain Boeing 767-200 aircraft and fewer international flights. Block hours for passenger services during 2024, including operation of Boeing 757 combi aircraft, decreased 14% compared to 2023 and were impacted by lower flying requirements of the DoD. Revenues for ACMI Services were also reduced in 2024 by $13.0 million for more customer incentive charges compared to 2023 for additional stock warrants granted to Amazon in May of 2024. As of December 31, 2024 and 2023, ACMI Services included 97 and 88 in-service aircraft, respectively.

ACMI Services had pre-tax earnings of $0.7 million during 2024, compared to $32.0 million for 2023 inclusive of internally allocated interest expense and the amortization of customer incentives. In addition to the lower flying levels and reduced revenues, ACMI Services experienced increased expenses for depreciation and amortization and employee compensation. The decline in earnings during 2024 reflects the reduced operations our customers' passenger flying requirements during 2024 compared to 2023.

Table of Contents

Beginning in the third quarter of 2024, ACMI Services began to operate ten customer-provided Boeing 767-300 aircraft that were added to our flight operations for ASI. ACMI Services benefited during the fourth quarter of 2024 from customer rate increases. Profitability in ACMI Services will depend on a number of factors, including customer flight schedules, the impact of inflation on operating expenses, customer billing rates, crewmember productivity and pay, employee attrition, employee benefits, aircraft maintenance schedules and the number of aircraft we operate. The war in Israel and conflicts in other parts of the world may also affect our operations, reducing the number of flights that we operate for the DoD and other customers.

Other Activities

We provide other support services to our ACMI Services customers and other airlines by leveraging our knowledge and capabilities developed for our own operations over the years. Through our FAA certificated maintenance and repair subsidiaries, we sell aircraft parts and provide aircraft maintenance and modification services. We also provide mail sorting, parcel handling and logistical support to USPS facilities and similar services to other customers in the U.S. We provide maintenance for ground equipment, facilities and material handling equipment and we resell aviation fuel in Wilmington, Ohio. Additionally, we provide flight training services.

External customer revenues from all other activities decreased $39.9 million to $277.1 million in 2024 compared to 2023. Revenues during 2024 decreased due to the lower aggregate sales of aviation fuel resulting from lower fuel prices and gallons sold compared to 2023. Revenues for ground services and aircraft maintenance also declined. Pre-tax earnings from other activities increased by $9.1 million to a pretax loss of $2.1 million in 2024. The increase in 2024 earnings reflects a revenue mix of higher margin airframe maintenance contracts instead of lower margin line maintenance revenues, and lower employee turnover. Additionally, lower overhead expenses and inventory adjustments during 2024 contributed to improved earnings compared to 2023.

Expenses from Continuing Operations

Salaries, wages and benefits expense decreased $0.8 million or less than 1% during 2024 compared to 2023. The number of employees declined 6% at the end of 2024 compare to 2023, including a reduction in the number of employees providing ground services due to fewer customer ground services contracts. While the number of total employees was less compared to 2023 the related expenses have been impacted by higher wage rates, schedule step increases for employees hired in recent years, as well as training and preparation expenses for adding aircraft during 2024. Inflationary pressures and employee attrition may impact wages in the future.

Depreciation and amortization expense increased $41.6 million during 2024 compared to 2023. The increase reflects incremental depreciation for 22 aircraft added to our owned fleet over the last two years and increased amortization of intangible assets related to customer contracts. Increased depreciation from newly converted aircraft was partially offset by lower depreciation for our fleet of Boeing 767-200 aircraft. We expect depreciation expense to continue to increase during future periods in conjunction with our fleet expansion, engine programs and capital spending plans.

Maintenance, materials and repairs expense decreased by $17.9 million during 2024 compared to 2023. This expense line includes the cost of materials and repairs to maintain aircraft and engines, as well as similar costs for providing maintenance services to customers. Fewer scheduled and unscheduled maintenance events occurred in 2024 compared to 2023. The aircraft maintenance and material expenses can vary among periods due to the number of maintenance events and the scope of airframe checks that are performed.

Fuel expense decreased by $50.0 million during 2024 compared to 2023. Fuel expense includes the cost of fuel to operate DoD flights, fuel used to position aircraft for service and for maintenance purposes, as well as the cost of fuel we resell to customers at the airport in Wilmington, Ohio. The decrease in fuel expense reflects a decrease in block hours flown, lower gallons sold and a decrease in the price of fuel.

Contracted ground and aviation services expense includes navigational services, aircraft and cargo handling services, baggage handling services and other airport services. Contracted ground and aviation services increased $2.2 million during 2024 compared to 2023 and was impacted by price inflation. Contracted ground and aviation services vary with the level and the locations of passenger airline services we provide.

Travel expense decreased by $4.7 million during 2024 compared to 2023. Although travel expenses were impacted by higher airfares and hotel rates compared to 2023, the decline in flight activity resulted in lower travel expenses.

Landing and ramp expense, which includes the cost of deicing chemicals, decreased by $1.2 million during 2024 compared to 2023, driven by less flying.

Table of Contents

Insurance expense increased by $1.7 million during 2024 compared to 2023 due to increased number of aircraft.

Transaction fees and expenses related to the Merger were $8.3 million during 2024 (see Note P of the accompanying consolidated financial statements for additional information).

Other operating expenses decreased by $15.2 million during 2024 compared to 2023. Other operating expenses for 2024 include decreases for professional fees, commission expense to our CRAF team for DoD revenues and lower flight expenses due to less airline activity.

Non Operating Income, Adjustments and Expenses

Interest expense increased by $10.0 million during 2024 compared to 2023. Interest rates under our Senior Credit Agreement increased year over year. Additionally, during August 2023 we issued the 2023 Convertible Notes bearing interest at 3.875%, proceeds from which were used in part to replace $204.5 million of convertible notes bearing 1.125% which matured in 2024. The Company's borrowing levels and interest expense will be impacted by the Merger.

We recorded unrealized pre-tax gains on financial instrument re-measurements of $2.8 million during 2024, compared to pre-tax losses of $1.0 million for 2023. The gains and losses include re-valuing, as of December 31, 2024 and 2023, the stock warrants and ATSG stock sale option granted to Amazon and interest rate swaps that we hold. Generally, the warrant values increase or decrease with corresponding increases or decreases in the ATSG common stock price during the measurement period. Additionally, the value of warrants depends partially on the probability that warrants will vest upon the execution of aircraft leases. Increases in the probability of warrants vesting and the sales option exercise price being above the traded ATSG price results in higher liabilities and losses. During 2023, ATSG repurchased $204.5 million of par value of the 2017 Convertible Notes in the open market resulting in a net pre-tax gain of $1.3 million, net of fees which was recorded under net gain on financial instruments on the income statement during the corresponding period. During 2023, we recorded a pre-tax charge of $0.9 million to write-off debt issuance costs for the repurchase of a portion of our 2017 Convertible Notes.

Non-service component losses related to retiree benefit plans totaled pre-tax losses of $4.3 million for 2024, compared to settlement charges and non-service component pre-tax losses of $37.0 million for 2023. Charges for 2023 include pre-tax charges of $24.1 million due to pension settlement transactions related to certain participants of a pension plan funded by the Company. For additional information about the settlement transactions, see Note I of the accompanying consolidated financial statements. The non-service component gain and losses of retiree benefits and settlement charges are determined by actuaries. The non-service component gain and losses of retiree benefits include the amortization of unrecognized gain and loss stemming from changes in assumptions regarding discount rates, expected investment returns and other retirement plan assumptions. Non-service components of retiree benefits can vary significantly from one year to the next based on investment results and changes in discount rates used to account for defined benefit retirement plans.

Income tax expense from earnings from continuing operations decreased $9.6 million for 2024 compared to 2023. The effective tax rate from continuing operations was 35% for 2024 compared to 29% for 2023. The effective tax rate increased due to an increase in non-deductible items including executive compensation limits and the reinstatement of limitations on the deductible amount of business meals and per diem in 2024. The increase also included the effects of the change in the timing of pension contributions and the effects of the early retirements of key employees.

As of December 31, 2024, we had operating loss carryforwards for U.S. federal income tax purposes of approximately $93.8 million which do not expire but the use of which is limited to 80% of taxable income in any given year. We expect to utilize the loss carryforwards to offset part of our federal income tax liabilities through 2025. Our taxable income earned from international flights is primarily sourced to the United States under international aviation agreements and treaties. When we operate in countries without such agreements, we could incur additional foreign income taxes. Aircraft leasing income earned by our Ireland-based subsidiary is taxed under Ireland's tax jurisdiction.

The effective rate can be impacted by a number of factors, including the continued impact of the apportionment of income among taxing jurisdictions, deductibility limitations for meals, employee compensation and per diem expenses and our leasing efforts in our Ireland-based subsidiary. We paid income taxes of $6.9 million in 2024. We expect to pay more income tax after our net operating loss carryforwards are utilized during 2025.

Table of Contents

Discontinued Operations

The financial results of discontinued operations primarily reflect workers' compensation cost adjustments and other benefits for former employees previously associated with ABX's former hub operations pursuant to which ABX performed package sorting services for DHL. Pre-tax earnings related to the former sorting operations were $0.0 million for 2024 compared to $0.7 million for 2023. Pre-tax earnings during 2023 were a result of reductions in self-insurance reserves for former employee claims and pension credits.

2023 Compared to 2022

CAM

As of December 31, 2023 and 2022, CAM had 90 and 91 aircraft under lease to external customers, respectively. CAM's revenues grew by $26.4 million during 2023 compared to 2022. Revenues from external customers totaled $354.0 million and $317.2 million for 2023 and 2022, respectively. CAM's revenues from the Company's airlines totaled $107.0 million during 2023, compared to $117.5 million for 2022. CAM's aircraft leasing and related services revenues, which exclude customer lease incentive amortization, increased $21.7 million in 2023 compared to 2022, as a result of new aircraft leases in 2023. Revenues increased during 2023 for new Boeing 767-300 aircraft leases which have higher lease rates than Boeing 767-200 aircraft. During 2023, CAM added ten Boeing 767-300 freighter aircraft and three Airbus A321-200 freighter aircraft to its portfolio of in-service aircraft and placed all 13 of these aircraft with external customers under long-term leases. During that same time period, ten Boeing 767-200 freighter aircraft and three Boeing 767-300 freighter aircraft were returned from lease. CAM also sold one Boeing 767-300 freighter aircraft to the external customer at the end of its lease. CAM's revenues from its 767-200 engine power program have decreased $14.3 million during 2023 compared to the prior year due primarily to the reduction in leased 767-200 aircraft.

CAM's pre-tax earnings, inclusive of internally allocated interest expense, were $109.4 million and $143.0 million during 2023 and 2022, respectively. Reduced pre-tax earnings include $17.3 million more of internally allocated interest expense due to higher company-wide interest expense during 2023 compared to 2022. Additionally, depreciation expense increased $11.9 million for 2023 due primarily to the addition of 16 Boeing aircraft and three Airbus A321-200 aircraft since the beginning of 2022. In addition to lower Boeing 767-200 engine power revenues for 2023 compared to 2022, pre-tax earnings reflects one less aircraft, netting additional Boeing 767-300 and Airbus A321-200 leases with the returns of Boeing 767-200 and Boeing 767-300 leased aircraft and a Boeing 767-300 freighter sold in 2023.

ACMI Services

Total revenues from ACMI Services decreased $4.6 million, during 2023 which is less than a 1% decline compared with revenues for 2022. Decreased revenues for 2023 reflected one fewer aircraft in operation and a 1% decrease in overall customer block hours during 2023. During 2023, block hours flown for our customers' delivery networks remained flat compared to 2022 due to a mix of routes that included more U.S. domestic block hours and fewer inter-continental block hours compared to 2022. Block hours for passenger services during 2023, including operation of Boeing 757 combi aircraft, decreased 4% compared to 2022. Block hours for passenger services declined sharply in the fourth quarter of 2023, down 12% compared to the fourth quarter of 2022 due to fewer flights for the DoD. As of December 31, 2023 and 2022, ACMI Services included 88 and 89 in-service aircraft, respectively.

ACMI Services had pre-tax earnings of $32.0 million during 2023, compared to $95.2 million for 2022 inclusive of internally allocated interest expense. The decline in earnings during 2023 reflects the change in our revenue mix, the reduction in passenger flying, more flight delays and continued inflation on employee costs and travel expenses compared to 2022. As noted above, we experienced a lower mix of international flying for express networks customers and lower passenger revenues, both of which are generally priced at higher margins than domestic express network operations. During 2023, travel expenses, primarily to position flight crews and in some situations accommodate passengers, increased 17% per block hour compared to 2022. ACMI Services was also impacted by additional internally allocated interest expense of $7.6 million for 2023 compared to 2022 due to higher interest rates and debt balances in 2023.

Other Activities

External customer revenues from all other activities decreased $7.1 million in 2023 compared to 2022. Revenues during 2023 decreased for ground services due to the discontinuation of a package sorting hub in late 2022 that we operated for a customer. Pre-tax earnings from other activities decreased by $13.7 million to a pretax loss of $11.2 million in 2023. The decrease in 2023 earnings reflect lower revenues from ground services; increased intercompany profit eliminations for aircraft maintenance, additional costs of aircraft parts and inventory adjustments; aircraft maintenance contract asset and contract liability adjustments and additional administrative costs.

Table of Contents

Expenses from Continuing Operations

Salaries, wages and benefits expense increased $19.0 million or 3% during 2023 compared to 2022. While the number of total employees at the end of 2023 was less compared to 2022 the related expenses have been impacted by higher wage rates, more pilots and benefit costs, higher employee attrition rates and more overtime pay.

Depreciation and amortization expense increased $11.9 million during 2023 compared to 2022. The increase reflects incremental depreciation for 19 aircraft added to our owned fleet over the last two years. Increased depreciation from newly converted aircraft was partially offset by lower depreciation for our fleet of Boeing 767-200 aircraft. Since the beginning of 2023, airframes for eight Boeing 767-200 aircraft have become fully depreciated.

Maintenance, materials and repairs expense increased by $50.6 million during 2023 compared to 2022. This expense line includes the cost of materials and repairs to maintain aircraft and engines, as well as similar costs for providing maintenance services to customers. The increase reflects an increase in scheduled airframe maintenance and part repairs.

Fuel expense increased by $3.0 million during 2023 compared to 2022. Fuel expense includes the cost of fuel to operate DoD charters, fuel used to position aircraft for service and for maintenance purposes, as well as the cost of fuel sales. The small increase in fuel expense is due to an increase in the cost of fuel sold to third parties, offset in part by a decrease in block hours flown for passenger services.

Contracted ground and aviation services expense includes navigational services, aircraft and cargo handling services, baggage handling services and other airport services. Contracted ground and aviation services decreased $2.8 million during 2023 compared to 2022. Contracted ground and aviation services vary with the level of passenger airline operations. The decreases for the year correspond to decreased flying volume.

Travel expense increased by $16.6 million during 2023 compared to 2022. In addition to the increased number of crewmember and flying volumes, travel expense increased in 2023 due to significantly higher airfares and hotel rates compared to 2022.

Landing and ramp expense, which includes the cost of deicing chemicals, increased by $0.9 million during 2023 compared to 2022, driven by higher airport fees.

Rent expense increased by $1.3 million during 2023 compared to 2022 due to additional aircraft engines and facility locations under lease.

Other operating expenses increased by $10.1 million during 2023 compared to 2022. Other operating expenses for 2023 include increases for professional fees, utilities, commission expense to our CRAF team for DoD revenues, flight expenses due to additional airline activity and net expenses due to the returns and retirements of aircraft compared to 2022.

Non Operating Income, Adjustments and Expenses

Interest expense increased by $25.8 million during 2023 compared to 2022. Debt balances and interest rates under our Senior Credit Agreement increased year over year. Additionally, during August 2023 we issued the 2023 Convertible Notes bearing interest at 3.875%, proceeds from which were used in part to replace $204.5 million of convertible notes bearing 1.125% which were set to mature in 2024.

We recorded unrealized pre-tax losses on financial instrument re-measurements of $1.0 million during 2023, compared to pre-tax gains of $9.0 million for 2022. The gains and losses include re-valuing, as of December 31, 2023 and 2022, the stock warrants and ATSG stock sale option granted to Amazon and interest rate swaps that we hold. Increases in the probability of warrants vesting and the sales option exercise price being above the traded ATSG price results in higher liabilities and losses. During 2023, ATSG repurchased $204.5 million of par value of the 2017 Convertible Notes in the open market resulting in a net pre-tax gain of $1.3 million, net of fees which was recorded under net gain on financial instruments on the income statement during the corresponding period. Also, during 2022, we repurchased $120.0 million of par value of the Senior Notes in the open market resulting in a net pre-tax gain of $4.5 million, net of fees which was recorded under net gain on financial instruments on the income statement during the corresponding period. We recorded a pre-tax charge of $0.9 million to write-off debt issuance costs for the repurchase of a portion of our 2017 Convertible Notes.

Table of Contents

Settlement charges and non-service component losses related to retiree benefit plans totaled pre-tax losses of $37.0 million for 2023, compared to non-service component pre-tax gains of $20.0 million for 2022. Charges for 2023 include pre-tax charges of $24.1 million due to pension settlement transactions related to certain participants of a pension plan funded by the Company. For additional information about the settlement transactions, see Note I of the accompanying consolidated financial statements. The non-service component gain and losses of retiree benefits and settlement charges are determined by actuaries. The non-service component gain and losses of retiree benefits include the amortization of unrecognized gain and loss stemming from changes in assumptions regarding discount rates, expected investment returns and other retirement plan assumptions.

Income tax expense from earnings from continuing operations decreased $39.6 million for 2023 compared to 2022. The effective tax rate from continuing operations was 29% for 2023 compared to 25% for 2022. The effective tax rate increased due to an increase in non-deductible items including the reinstatement of limitations on the deductible amount of business meals and per diem in 2023. For 2022, business meals and per diem were 100% deductible, in part, to help boost the restaurant industry as part of the Consolidated Appropriations Act of 2021. The increase also included the effects of the change in the timing of pension contributions and the effects of the early retirements of key employees.

As of December 31, 2023, we had operating loss carryforwards for U.S. federal income tax purposes of approximately $173.3 million which do not expire but the use of which is limited to 80% of taxable income in any given year. We paid income taxes of $6.8 million in 2023.

Discontinued Operations

Pre-tax earnings related to the former sorting operations were $0.7 million for 2023 compared to $2.8 million for 2022. Pre-tax earnings during 2023 and 2022 were a result of reductions in self-insurance reserves for former employee claims and pension credits.

LIQUIDITY AND CAPITAL RESOURCES

Cash Flows

Net cash generated from operating activities totaled $532.8 million, $654.1 million and $472.1 million in 2024, 2023 and 2022, respectively. The decrease in operating cash flows for 2024 compared to 2023 was driven by lower customer revenues, increased prepayments to engine maintenance providers and timing of vendor payments. The increase in operating cash flows for 2023 compared to 2022 reflects faster payments from customers and lower customer accounts receivable balances. Cash outlays for pension contributions were $1.3 million, $1.3 million and $1.3 million in 2024, 2023 and 2022, respectively.

Capital spending levels were primarily the result of aircraft modification costs and the acquisition of aircraft for freighter modification. Cash payments for capital expenditures were $331.0 million, $793.4 million and $599.4 million in 2024, 2023 and 2022, respectively. Capital expenditures in 2024 included $218.1 million for the acquisition of four Boeing 767-300 aircraft, three Airbus A330 aircraft and freighter modification costs; $100.6 million for required heavy maintenance; and $12.3 million for other equipment. Capital expenditures in 2023 included $574.0 million for the acquisition of eleven Boeing 767-300 aircraft, two Airbus A321-200 aircraft, three Airbus A330 aircraft and freighter modification costs; $206.4 million for required heavy maintenance; and $13.0 million for other equipment. Capital expenditures in 2022 included $412.6 million for the acquisition of eight Boeing 767-300 aircraft, six Airbus A321-200 aircraft and freighter modification costs; $173.8 million for required heavy maintenance; and $13.0 million for other equipment.

Cash proceeds of $46.7 million, $29.1 million and $15.9 million were received in 2024, 2023 and 2022, respectively, for the sale of aircraft engines and airframes.

During 2024, 2023 and 2022, we spent $20.4 million, $1.6 million and $16.5 million, respectively to invest in joint ventures. Our joint-venture with Precision Aircraft Solutions, LLC, developed a passenger-to-freighter conversion program for Airbus A321-200 aircraft and our joint venture with GA Telesis Engine Services, LLC provides engine tear-down services to harvest and sell engine parts.

Net cash used in financing activities was $221.1 and net cash provided by financing activities was $138.3 million and 85.6 million in 2023 and 2022, respectively. During 2024, we made debt principal payments of $795.9 million and drew $580.0 million from the revolving credit facility under the Senior Credit Agreement and other financing arrangements. During 2023, we made debt principal payments of $225.6 million and drew $335.0 million from the revolving credit facility. Financing activities in 2023 included $90.7 million to repurchase shares of ATSG common stock in addition to the shares noted above. During 2022, we made debt principal payments of $365.6 million and drew $625.0 million from the revolving credit facility and paid $115.2 million to retire Senior Notes. Additionally during 2022, we used $53.9 million to repurchase shares of ATSG common stock.

Table of Contents

In August 2023 we issued $400.0 million of unsecured convertible notes (for additional information about these notes see 2023 Convertible Notes in footnote F). We used $203.2 million of the proceeds to repurchase $204.5 million of the principal value of the 2017 Convertible Notes. Additionally, we used $118.5 million of the proceeds from the 2023 Convertible Notes to repurchase 5.4 million shares of ATSG common stock concurrently with the offering of the convertible notes. The Company used the remainder of the net proceeds from the offering to satisfy fees and expenses associated with the offering, to repay a portion of the outstanding borrowings under our revolving credit facility and for general corporate purposes. In October 2024, upon maturity, the Company settled all of the principal due for the 2017 Convertible Notes in cash using the Company's revolving credit facility.

Commitments

Debt

We have obligations for interest and principal payments associated with our debt. As of December 31, 2024, our future debt obligations were $0.7 million in 2025, $0.7 million in 2026, $569.7 million in 2027, $580.7 million in 2028, $400.7 million in 2029, and $5.2 million thereafter. Additional debt or lower EBITDA may result in higher interest rates. See Note F of the accompanying consolidated financial statements for additional information about the timing of expected and future principal debt payments. Upon closing of the Merger, the Company and certain of its subsidiaries will become guarantors of new debt instruments to finance the Merger. See Note P of the accompanying consolidated financial statements for additional information about the Merger financing.

Leases

ATSG and its subsidiaries enter into leases for property, aircraft, engines and other types of equipment in the normal course of business. As of December 31, 2024, our future cash obligations for facility leases were $7.9 million in 2025, $5.3 million in 2026, $4.6 million in 2027, $3.5 million in 2028, $2.5 million in 2029 and $3.4 million thereafter. As of December 31, 2024, our future obligations for aircraft and other leases were $12.6 million in 2025, $7.5 million in 2026, $5.0 million in 2027, $3.9 million in 2028, $3.9 million in 2029 and $0.6 million thereafter. See Note H to the accompanying consolidated financial statements for further detail.

Aircraft purchase and modifications

We expect to increase the size of CAM's fleet in 2025 and beyond through the purchase and modification of additional aircraft. The modification primarily consists of the installation of a standard cargo door and loading system. The Company outsources a significant portion of the aircraft freighter modification process to non-affiliated third parties. The Company has agreements with vendors for the conversion of Boeing 767-300, Airbus A321 and Airbus A330 passenger aircraft into a standard configured freighter aircraft. In addition to the aircraft purchase commitments, we are required to make cash deposits for conversion slots. As of December 31, 2024, the Company owned seven Boeing 767-300 aircraft, one Airbus A321-200 aircraft and six Airbus A330 aircraft that were in or awaiting the modification process. As of December 31, 2024, the Company has agreements to purchase two more Boeing 767-300 aircraft through 2026. As of December 31, 2024, the Company's commitments to acquire and convert these aircraft totaled $261.4 million, including estimated payments of $116.3 million through 2025 and the remaining payments through 2028. Actual conversion payments will be based on the achievement of progress milestones. The Company has 24 additional conversion slots with scheduled induction dates beginning in 2025. The total cost to secure corresponding passenger aircraft feedstock and complete these 24 aircraft conversions will depend on the sourcing of aircraft, engine conditions and progress of each aircraft's conversion process. See Note H to the accompanying consolidated financial statements for further details.

Defined benefit pension

We provide defined benefit pension plans to certain employee groups. The timing of pension and post-retirement healthcare payments cannot be reasonably determined, except for $2.2 million expected to be funded in 2025. For additional information about our pension obligations, see Note I of the accompanying consolidated financial statements.

Liquidity

At December 31, 2024, we had $60.6 million of cash balances and $341.6 million available from the unused portion of the revolving credit facility under the Senior Credit Agreement as described in Note F of the accompanying consolidated financial statements. We expect our operations to continue to generate significant net cash in-flows after deducting required spending for heavy maintenance and other sustaining capital expenditures. We expect to incur a number of non-recurring costs associated with the Merger, including, among others, fees and expenses from financial advisors and other advisors and representatives, certain employment-related costs relating to employees of the Company and filing fees due in connection with required regulatory filings. Some of these costs have already been incurred or may be incurred regardless of whether the Merger is completed.

Table of Contents

Assuming the continued operation of our business in the absence of the Merger, we believe that our current cash balance, forecasted cash flows provided from customer leases and operating agreements, combined with the Senior Credit Agreement, will be sufficient to fund the expansion and maintenance of our fleet while meeting our contractual obligations, other commitments and working capital requirements for at least the next twelve months. As previously discussed, we anticipate that the Merger will be consummated during the second quarter of 2025. Upon the closing of the Merger, the Senior Credit Agreement will be terminated and replaced with a new credit facility. The discussion of liquidity in this paragraph is not intended to cover any period subsequent to the closing of the Merger. See Note F of the accompanying consolidated financial statements for additional information regarding our credit facilities and outstanding debt obligations.

Continued disruptions in the global supplies chain and labor shortages may delay aircraft modification projects, pushing contractual obligations into later periods and could decrease the projected amount of capital expenditures.

CRITICAL ACCOUNTING ESTIMATES

“Management’s Discussion and Analysis of Financial Condition and Results of Operations,” as well as certain disclosures included elsewhere in this Form 10-K, are based upon our consolidated financial statements included in this Form 10-K, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to select appropriate accounting policies and make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingencies. In certain cases, there are alternative policies or estimation techniques which could be selected. On an ongoing basis, we evaluate our selection of policies and the estimation techniques we use, including those related to revenue recognition, post-retirement liabilities, bad debts, self-insurance reserves, valuation of spare parts inventory, useful lives, salvage values and impairment of property and equipment, income taxes, contingencies and litigation. We base our estimates on historical experience, current conditions and on various other assumptions that are believed to be reasonable under the circumstances. Those factors form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources, as well as for identifying and assessing our accounting treatment with respect to commitments and contingencies. Actual results may differ from these estimates under different assumptions or conditions. We believe the following significant and critical accounting policies involve the more significant judgments and estimates used in preparing the consolidated financial statements.

Goodwill and Intangible Assets

We assess in the fourth quarter of each year whether our goodwill acquired in acquisitions is impaired in accordance with the Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 350-20 Intangibles—Goodwill and Other. Additional assessments may be performed on an interim basis whenever events or changes in circumstances indicate an impairment may have occurred. Indefinite-lived intangible assets are not amortized but are assessed for impairment annually, or more frequently if impairment indicators occur. Finite-lived intangible assets are amortized over their estimated useful economic lives and are periodically reviewed for impairment.

The goodwill impairment test requires significant judgment, including the determination of the fair value of each reporting unit that has goodwill. We estimate the fair value using a market approach and an income approach utilizing discounted cash flows applied to a market-derived rate of return. The market approach utilizes market multiples from comparable publicly traded companies. The market multiples include revenues and EBITDA (earnings before interest, taxes, depreciation and amortization). We derive cash flow assumptions from many factors including recent market trends, expected revenues, cost structure, aircraft maintenance schedules and long-term strategic plans for the deployment of aircraft. Key assumptions under the discounted cash flow models include projections for the number of aircraft in service, capital expenditures, long term growth rates, operating cash flows and market-derived discount rates.

The performance of the goodwill impairment test is the comparison of the fair value of the reporting unit to its respective carrying value. If the carrying value of a reporting unit is less than its fair value no impairment exists. If the carrying value of a reporting unit is higher than its fair value an impairment loss is recorded for the difference and charged to operations. See additional information about the goodwill impairment tests in Note B of the accompanying consolidated financial statements.

Table of Contents

Based on our analysis, the individual fair values of each reporting unit having goodwill exceeded their respective carrying values as of December 31, 2024. We have used the assistance of an independent business valuation firm in estimating an expected market rate of return, and in the development of a market approach for CAM and OAI separately, using multiples of EBITDA and revenues from comparable publicly traded companies. Our key assumptions used for CAM's goodwill testing include uncertainties, including the level of demand for cargo aircraft by shippers, the DoD and freight forwarders and CAM's ability to lease aircraft and the lease rates that will be realized. The demand for customer airlift is projected based on input from customers, management's interface with customer planning personnel and aircraft utilization trends. Our key assumptions used for OAI's goodwill testing include the number of aircraft that OAI will operate, the amount of revenues that the aircraft will generate, the number of flight crews and the cost of needed flight crews. Our key assumptions used for goodwill testing of our subsidiaries Pemco and Trifactor Solutions, LLC include the level of revenues that customers will seek and the cost of labor, parts and contract resources expected to be utilized. Certain events or changes in circumstances could negatively impact our key assumptions. Customer preferences may be impacted by changes in aviation fuel prices. Key customers, including ASI, DHL and the DoD may decide that they do not need as many aircraft as projected or may find alternative providers.

Contingencies

We are involved in legal matters that have a degree of uncertainty associated with them. We continually assess the likely outcomes of these matters and the adequacy of amounts, if any, provided for these matters. There can be no assurance that the ultimate outcome of these matters will not differ materially from our assessment of them. There also can be no assurance that we know all matters that may be brought against us at any point in time.

Income Taxes

We account for income taxes under the provisions of FASB ASC Topic 740-10 Income Taxes. The objectives of accounting for income taxes are to recognize the amount of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our financial statements or tax returns. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements or tax returns. Fluctuations in the actual outcome of expected future tax consequences could materially impact our financial position or results of operations.

As of December 31, 2024, we had significant deferred tax assets including net operating loss carryforwards (“NOL CFs”) for federal income tax purposes. Based upon projections of taxable income, we determined that it was more likely than not that the NOL CFs will be realized in 2024 and beyond.

We recognize the impact of a tax position if that position is more likely than not of being sustained on audit, based on the technical merits of the position.

Stock Warrants

Our accounting for warrants issued to Amazon is determined in accordance with the financial reporting guidance for equity-based payments to non-employees and for financial instruments. The warrants issued to Amazon are recorded as a lease incentive asset using their fair value at the time that ASI has met its lease performance obligation. The lease incentive is amortized against revenues over the duration of related aircraft leases. The unexercised warrants are classified in liabilities and re-measured to fair value at the end of each reporting period, resulting in a non-operating gain or loss.

Post-retirement Obligations

We sponsor qualified defined benefit pension plans for ABX’s flight crewmembers and other eligible employees. We also sponsor non-qualified, unfunded excess plans that provide benefits to executive management and crewmembers that are in addition to amounts permitted to be paid through our qualified plans under provisions of the tax laws. Employees are no longer accruing benefits under any of the defined benefit pension plans. We also sponsor unfunded post-retirement healthcare plans for ABX’s flight crewmembers.

The accounting and valuation for these post-retirement obligations are determined by prescribed accounting and actuarial methods that consider a number of assumptions and estimates. The selection of appropriate assumptions and estimates is significant due to the long period over which benefits will be accrued and paid. The long term nature of these benefit payouts increases the sensitivity of certain estimates on our post-retirement costs. In actuarially valuing our pension obligations and determining related expense amounts, key assumptions include discount rates, expected long term investment returns, retirement ages and mortality. Actual results and future changes in these assumptions could result in future costs that are materially different than those recorded in our annual results of operations.

Table of Contents

Our actuarial valuation includes an assumed long term rate of return on pension plan assets of 6.65% and 6.55% for crewmember plans and non-crewmember plans, respectively. Our assumed rate of return is based on a targeted long term investment allocation of 30% equity securities, 65% fixed income securities and 5% cash. The actual asset allocation at December 31, 2024, was 30% equities, 69% fixed income and 1% cash. The pension trust includes $155.1 million of investments whose fair values have been estimated in the absence of readily determinable fair values. Such investments include private equity, hedge fund investments and real estate funds. Management’s estimates are based on information provided by the fund managers or general partners of those funds.

In evaluating our assumptions regarding expected long term investment returns on plan assets, we consider a number of factors, including our historical plan returns in connection with our asset allocation policies, assistance from investment consultants hired to provide oversight over our actively managed investment portfolio, and long term inflation assumptions. The selection of the expected return rate materially affects our pension costs. Our expected long term rate of return was 6.65% for crewmember plans and 6.55% for non-crewmember plans after analyzing expected returns on investment vehicles and considering our long term asset allocation expectations. Fluctuations in long-term interest rates can have an impact on the actual rate of return. If we were to lower our long term rate of return assumption by a hypothetical 100 basis points, expense in 2024 would be increased by approximately $4.9 million. We use a market value of assets as of the measurement date for determining pension expense.

In selecting the interest rate to discount estimated future benefit payments that have been earned to date to their net present value (defined as the projected benefit obligation), we match the plan’s benefit payment streams to high-quality bonds of similar maturities. The selection of the discount rate not only affects the reported funded status information as of December 31 (as shown in Note I to the accompanying consolidated financial statements), but also affects the succeeding year’s pension and post-retirement healthcare expense. The discount rates selected for December 31, 2024, based on the method described above, were 5.70% for crewmembers and 5.80% for non-crewmembers. If we were to lower our discount rates by a hypothetical 50 basis points, pension expense in 2024 would be increased by approximately $5.7 million.

Our mortality assumptions at December 31, 2024, reflect the most recent projections released by the Actuaries Retirement Plans Experience Committee, a committee within the Society of Actuaries, a professional association in North America. The assumed future increase in salaries and wages is not a significant estimate in determining pension costs because each defined benefit pension plan was frozen during 2009 with respect to additional benefit accruals.

Our corridor approach amortizes into earnings variances in plan assets and benefit obligations that are a result of the previous measurement assumptions when the net deferred variances exceed 10% of the greater of the market value of plan assets or the benefit obligation at the beginning of the year. The amount in excess of the corridor is amortized over the average remaining service period to retirement date of active plan participants. The average remaining service period to retirement is an assumption that reflects the estimated retirement date based on recent retirement data and could be subject to changes as a result of increased delayed retirements or increased early retirements. This assumption is based on the study of demographic information and actual experience. The average remaining service years was estimated to be 2.64 years and 5.95 years for crew members and non-crewmembers respectively as of December 31, 2024.

The following table illustrates the sensitivity of the aforementioned assumptions on our pension expense, pension obligation and accumulated other comprehensive income (in thousands):

	Effect of change
			December 31, 2024
						Accumulated
	2024					other
	Pension		Pension			comprehensive
Change in assumption	expense		obligation			income (pre-tax)
100 basis point decrease in rate of return	$	4,921	$	—		$	—
50 basis point decrease in discount rate		5,666		(23,492	)		23,492
Aggregate effect of all the above changes		10,587		(23,492	)		23,492

New Accounting Pronouncements

For information regarding recently issued accounting pronouncements and the expected impact on our annual statements, see Note A to the consolidated financial statements included in this Form 10-K.

Table of Contents

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company is exposed to market risk for increasing interest rates.

The Company has entered into interest rate swap instruments. As a result, fluctuations in interest rates will result in the recording of unrealized gains and losses on interest rate derivatives held by the Company. The combined notional values were $200.0 million as of December 31, 2024. See Note G in the accompanying consolidated financial statements for a discussion of our accounting treatment for these hedging transactions.

As of December 31, 2024, the Company had $971.1 million of fixed interest rate debt and $569.0 million of variable interest rate debt outstanding. Variable interest rate debt exposes the Company to differences in future cash flows resulting from changes in market interest rates. Variable interest rate risk can be quantified by estimating the change in annual cash flows resulting from a hypothetical 50% increase in interest rates. A hypothetical 50% increase or decrease in interest rates would have resulted in a change in interest expense of approximately $20.6 million for 2024.

The convertible debt and Senior Notes issued at fixed interest rates are exposed to fluctuations in fair value resulting from changes in market interest rates. Fixed interest rate risk can be quantified by estimating the change in fair value of our long term convertible debt and Senior Note. As of December 31, 2024, increases in market interest rates contributed to an approximately $9.5 million decrease in fair value. A 50% increase in interest rates would have decreased the book value of the Company's fixed interest rate convertible debt and Senior Notes by approximately $67.6 million.

The Company is exposed to concentration of credit risk primarily through cash deposits, cash equivalents, marketable securities and derivatives. As part of its risk management process, the Company monitors and evaluates the credit standing of the financial institutions with which it does business. The financial institutions with which it does business are generally highly rated. The Company is exposed to counterparty risk, which is the loss it could incur if a counterparty to a derivative contract defaulted.

As of December 31, 2024, the Company's liabilities reflected certain stock warrants issued to Amazon. The fair value of the stock warrants obligation is re-measured at the end of each reporting period and marked to market. The fair value of the stock warrants is dependent on a number of factors which change, including ATSG's common stock price, the volatility of ATSG's common stock and the risk-free interest rate. See Note D in the accompanying consolidated financial statements for further information about the fair value of the stock warrants.

The Company sponsors defined benefit pension plans and post-retirement healthcare plans for certain eligible employees. The Company's related pension expense, plans' funded status, and funding requirements are sensitive to changes in interest rates. The funded status of the plans and the annual pension expense is recalculated at the beginning of each calendar year using the fair value of plan assets, market-based interest rates at that point in time, as well as assumptions for asset returns and other actuarial assumptions. Higher interest rates could result in a lower fair value of plan assets and increased pension expense in the following years. At December 31, 2024, ABX's defined benefit pension plans had total investment assets of $508.4 million under investment management. See Note I in the accompanying consolidated financial statements for further discussion of these assets.

The Company is exposed to market risk for changes in the price of jet fuel. The risk associated with jet fuel, however, is largely mitigated by reimbursement through the agreements with the Company's customers.

Table of Contents

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Index to Consolidated Financial Statements

			Page
Report of Independent Registered Public Accounting Firm			51
Consolidated Balance Sheets			53
Consolidated Statements of Operations			54
Consolidated Statements of Comprehensive Income			55
Consolidated Statements of Cash Flows			56
Consolidated Statements of Stockholders’ Equity			57
Notes to Consolidated Financial Statements			58
Note A - Summary of Financial Statement Preparation and Significant Accounting Policies			58
Note B - Goodwill, Intangibles and Equity Investments			64
Note C - Significant Customers			65
Note D - Fair Value Measurements			68
Note E - Property and Equipment			69
Note F - Debt Obligations			70
Note G - Derivative Instruments			72
Note H - Commitments and Contingencies			72
Note I - Pension and Other Post-Retirement Benefit Plans			74
Note J - Income Taxes			79
Note K - Accumulated Other Comprehensive Income (Loss)			81
Note L - Stock-Based Compensation			81
Note M - Common Stock and Earnings Per Share			82
Note N - Segment and Revenue Information			83
Note O - Discontinued Operations			85

Note P - Merger Agreement

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Air Transport Services Group, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Air Transport Services Group, Inc. and subsidiaries (the "Company") as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive income, shareholders' equity, and cash flows, for each of the three years in the period ended December 31, 2024, and the related notes and the schedule listed in the Index at Item 15(a)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 3, 2025, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Stock Warrant Obligations - Fair Value Measurements - Level 3 Liabilities - Refer to Note D to the Financial Statements

Critical Audit Matter Description

In conjunction with a lease incentive agreement entered into with a customer on December 20, 2018, the Company conditionally granted to the customer unvested warrants to purchase shares of the Company’s common stock, which vest as additional aircraft leases are executed, or through placement of additional customer provided aircraft into service with ATSG. These warrants do not have a readily determinable market value and were valued at $17.8 million as of December 31, 2024, based on a pricing model using several inputs. Those inputs include significant observable and unobservable inputs.

We identified the valuation of these unvested warrants to purchase shares of the Company’s common stock, conditionally granted to a customer, as a critical audit matter because of a significant unobservable input management uses to estimate fair value. Valuation of these warrants included the use of a warrant valuation model with adjustments for the probability of the future vesting events occurring. A high degree of auditor judgment and an increased extent of effort was involved to audit the probabilities of the future vesting events occurring.

Table of Contents

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to a significant unobservable input used in management's estimate of fair value of the conditionally granted unvested warrants included the following, among others:

•

We tested the effectiveness of management’s controls over the valuation of these warrants, which included a control over the significant unobservable input.

•

We evaluated the reasonableness of management's estimate of the probability that future vesting events will occur by assessing the Company's forecast for aircraft leases and extensions, the Company's projected aircraft availability, and related internal and external communications.

•

We performed a retrospective review of management's ability to accurately estimate the probability of future vesting events occurring by comparing (1) prior period estimates of probability to actual dates of vesting events, and (2) prior period estimates of aircraft availability and customer action to actual results.

•

We assessed the consistency by which management has applied business assumptions to a significant unobservable input.

•

With the assistance of our fair value specialists, we developed independent fair value estimates and compare our estimates to the Company's recorded amounts.

/s/ Deloitte & Touche LLP

Cincinnati, Ohio

March 3, 2025

We have served as the Company's auditor since 2002.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

	*December 31, 2024*			*December 31, 2023*
ASSETS
CURRENT ASSETS:
Cash, cash equivalents and restricted cash	$	60,576		$	53,555
Accounts receivable, net of allowance of $1,245 and $1,065 in 2024 and 2023		208,269			215,581
Inventory		49,867			49,939
Prepaid supplies and other		32,870			26,626
TOTAL CURRENT ASSETS		351,582			345,701
Property and equipment, net		2,752,305			2,820,769
Customer incentive		125,704			60,961
Goodwill and acquired intangibles		467,324			482,427
Operating lease assets		53,728			54,060
Other assets		143,068			118,172
TOTAL ASSETS	$	3,893,711		$	3,882,090
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable	$	236,939		$	227,652
Accrued salaries, wages and benefits		63,086			56,650
Accrued expenses		9,980			10,784
Current portion of debt obligations		661			54,710
Current portion of lease obligations		18,553			20,167
Unearned revenue and grants		30,001			30,226
TOTAL CURRENT LIABILITIES		359,220			400,189
Long term debt		1,548,080			1,707,572
Stock obligations		17,752			1,729
Post-retirement obligations		17,397			19,368
Long term lease obligations		35,322			34,990
Other liabilities		135,135			64,292
Deferred income taxes		296,793			285,248
TOTAL LIABILITIES		2,409,699			2,513,388
Commitments and contingencies (Note H)
STOCKHOLDERS’ EQUITY:
Preferred stock, 20,000,000 shares authorized, including 75,000 Series A Junior Participating Preferred Stock		—			—
Common stock, par value $0.01 per share; 150,000,000 shares authorized; 65,888,047 and 65,240,961 shares issued and outstanding in 2024 and 2023, respectively		659			652
Additional paid-in capital		915,990			836,270
Retained earnings		616,643			589,209
Accumulated other comprehensive loss		(49,280	)		(57,429	)
TOTAL STOCKHOLDERS’ EQUITY		1,484,012			1,368,702
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	3,893,711		$	3,882,090

See notes to consolidated financial statements.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

	*December 31,*
	*2024*			*2023*			*2022*
REVENUES	$	1,961,971		$	2,070,611		$	2,045,469
OPERATING EXPENSES
Salaries, wages and benefits		685,099			685,940			666,950
Depreciation and amortization		384,617			342,985			331,064
Maintenance, materials and repairs		194,902			212,767			162,122
Fuel		228,518			278,528			275,512
Contracted ground and aviation services		76,469			74,273			77,026
Travel		123,860			128,584			111,989
Landing and ramp		16,276			17,486			16,583
Rent and related expenses		31,157			31,703			30,437
Insurance		11,508			9,790			9,666
Merger transaction fees		8,284			—			—
Other operating expenses		73,478			88,723			78,637
		1,834,168			1,870,779			1,759,986
OPERATING INCOME		127,803			199,832			285,483
OTHER INCOME (EXPENSE)
Interest income		959			766			415
Settlement charges and non-service component gains of retiree benefits		(4,341	)		(37,017	)		20,046
Debt issuance costs		—			(936	)		—
Net gain (loss) on financial instruments		2,796			(962	)		9,022
Loss from non-consolidated affiliates		(2,171	)		(4,740	)		(7,607	)
Interest expense		(82,705	)		(72,704	)		(46,861	)
		(85,462	)		(115,593	)		(24,985	)
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		42,341			84,239			260,498
INCOME TAX EXPENSE		(14,907	)		(24,491	)		(64,060	)
EARNINGS FROM CONTINUING OPERATIONS		27,434			59,748			196,438
EARNINGS FROM DISCONTINUED OPERATIONS, NET OF TAXES		—			579			2,143
NET EARNINGS	$	27,434		$	60,327		$	198,581

BASIC EARNINGS PER SHARE
Continuing operations	$	0.42		$	0.87		$	2.67
Discontinued operations		—			0.01			0.03
TOTAL BASIC EARNINGS PER SHARE	$	0.42		$	0.88		$	2.70

DILUTED EARNINGS PER SHARE
Continuing operations	$	0.40		$	0.82		$	2.26
Discontinued operations		—			—			0.02
TOTAL DILUTED EARNINGS PER SHARE	$	0.40		$	0.82		$	2.28

WEIGHTED AVERAGE SHARES
Basic		65,026			68,641			73,611
Diluted		67,309			75,561			88,324

See notes to consolidated financial statements.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

	*December 31,*
	*2024*		*2023*		*2022*
NET EARNINGS	$	27,434	$	60,327	$	198,581
OTHER COMPREHENSIVE INCOME (LOSS):
Defined Benefit Pension		7,942		45,487		(41,587	)
Defined Benefit Post-Retirement		207		466		265
Foreign Currency Translation		—		20		—

TOTAL COMPREHENSIVE INCOME, net of tax	$	35,583	$	106,300	$	157,259

See notes to consolidated financial statements.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	*Years Ended December 31*
	*2024*			*2023*			*2022*
OPERATING ACTIVITIES:
Net earnings from continuing operations	$	27,434		$	59,748		$	196,438
Net earnings from discontinued operations		—			579			2,143
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization		415,619			363,528			355,848
Pension and post-retirement		10,282			18,980			2,675
Deferred income taxes		8,714			16,529			54,862
Amortization of stock-based compensation		9,726			8,516			8,342
Loss from non-consolidated affiliates		2,171			4,740			7,607
Net loss (gain) on financial instruments		(2,796	)		962			(9,022	)
Debt issuance costs		—			936			—
Changes in assets and liabilities:
Accounts receivable		8,174			79,185			(96,223	)
Inventory and prepaid supplies		(33,063	)		11,997			(18,981	)
Accounts payable		18,384			58,151			6,047
Unearned revenue		505			10,634			(26,430	)
Accrued expenses, salaries, wages, benefits and other liabilities		74,837			(2,382	)		14,755
Pension and post-retirement balances		(7,485	)		16,472			(24,258	)
Other		313			5,506			(1,683	)
NET CASH PROVIDED BY OPERATING ACTIVITIES		532,815			654,081			472,120
INVESTING ACTIVITIES:
Expenditures for property and equipment		(331,006	)		(793,447	)		(599,431	)
Proceeds from property and equipment		46,746			29,118			15,913
Acquisitions and investments in businesses		(20,445	)		(1,600	)		(16,545	)
NET CASH (USED IN) INVESTING ACTIVITIES		(304,705	)		(765,929	)		(600,063	)
FINANCING ACTIVITIES:
Principal payments on long term obligations		(795,866	)		(225,639	)		(365,628	)
Proceeds from revolving credit facilities		580,000			335,000			625,000
Payments for financing costs		—			(10,779	)		(1,803	)
Proceeds from convertible note issuance		—			400,000			—
Repurchase of convertible notes		—			(203,247	)		—
Repurchase of senior unsecured notes		—			—			(115,204	)
Purchase of common stock		—			(155,349	)		(53,868	)
Withholding taxes paid for conversion of employee stock awards		(5,223	)		(2,986	)		(2,916	)
Other financing related proceeds		—			1,269			—
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES		(221,089	)		138,269			85,581

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		7,021			26,421			(42,362	)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR		53,555			27,134			69,496
CASH AND CASH EQUIVALENTS AT END OF YEAR	$	60,576		$	53,555		$	27,134

SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of amount capitalized	$	82,297		$	51,873		$	47,194
Federal and state income taxes paid	$	6,924		$	6,835		$	6,205
Restricted balance of cash	$	6,155		$	17,173		$	1,886
SUPPLEMENTAL NON-CASH INFORMATION:
Accrued expenditures for property and equipment	$	32,015		$	41,703		$	56,433

See notes to consolidated financial statements.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands, except share data)

												*Accumulated*
	*Common Stock*						*Additional*					*Other*
							*Paid-in*			*Accumulated*		*Comprehensive*
	*Number*			*Amount*			*Capital*			*Earnings*		*Income (Loss)*			*Total*
BALANCE AT DECEMBER 31, 2021		74,142,183		$	741		$	1,074,286		$	309,430	$	(62,080	)	$	1,322,377
Stock-based compensation plans
Grant of restricted stock		118,310			1			(1	)		—		—			—
Issuance of common shares, net of withholdings		66,263			1			(2,917	)		—		—			(2,916	)
Forfeited restricted stock		(5,700	)		—			—			—		—			—
Purchase of common stock		(1,993,298	)		(20	)		(53,848	)		—		—			(53,868	)
Cumulative effect in change in accounting principle		—			—			(39,559	)		20,871		—			(18,688	)
Amortization of stock awards and restricted stock		—			—			8,342			—		—			8,342
Total comprehensive income (loss)		—			—			—			198,581		(41,322	)		157,259
BALANCE AT DECEMBER 31, 2022		72,327,758		$	723		$	986,303		$	528,882	$	(103,402	)	$	1,412,506
Stock-based compensation plans
Grant of restricted stock		265,361			3			(3	)		—		—			—
Issuance of common shares, net of withholdings		49,619			—			(2,987	)		—		—			(2,987	)
Forfeited restricted stock		(16,000	)		—			—			—		—			—
Purchase of common stock		(7,385,777	)		(74	)		(156,829	)		—		—			(156,903	)
Settlement of convertible note hedges and warrants		—			—			1,270			—		—			1,270
Amortization of stock awards and restricted stock		—			—			8,516			—		—			8,516
Total comprehensive income		—			—			—			60,327		45,973			106,300
BALANCE AT DECEMBER 31, 2023		65,240,961		$	652		$	836,270		$	589,209	$	(57,429	)	$	1,368,702
Stock-based compensation plans
Grant of restricted stock		754,659			8			(8	)		—		—			—
Issuance of common shares, net of withholdings		(34,663	)		—			(5,223	)		—		—			(5,223	)
Forfeited restricted stock		(72,910	)		(1	)		1			—		—			—
Modification of warrants		—			—			66,819			—		—			66,819
Grant of warrants		—			—			5,043			—		—			5,043
Amortization of warrants		—			—			3,362			—		—			3,362
Amortization of stock awards and restricted stock		—			—			9,726			—		—			9,726
Total comprehensive income		—			—			—			27,434		8,149			35,583
BALANCE AT DECEMBER 31, 2024		65,888,047		$	659		$	915,990		$	616,643	$	(49,280	)	$	1,484,012

See notes to consolidated financial statements.

Table of Contents

AIR TRANSPORT SERVICES GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE A—SUMMARY OF FINANCIAL STATEMENT PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations

Air Transport Services Group, Inc. is a holding company whose subsidiaries lease aircraft and provide contracted airline operations as well as other support services mainly to the air transportation, e-commerce and package delivery industries.

The Company's primary leasing subsidiary, Cargo Aircraft Management, Inc. (“CAM”), leases aircraft to each of the Company's airlines as well as to non-affiliated airlines and other lessees. The Company's airlines, ABX Air, Inc. (“ABX”), Air Transport International, Inc. (“ATI”) and Omni Air International, LLC ("OAI") each have the authority, through their separate U.S. Department of Transportation ("DOT") and Federal Aviation Administration ("FAA") certificates, to transport cargo worldwide. The Company provides a combination of aircraft, crews, maintenance and insurance services for its customers' transportation network through crew, maintenance, and insurance ("CMI") and aircraft, crew, maintenance, and insurance ("ACMI") agreements and through charter contracts in which aircraft fuel is also included. The Company's subsidiary LGSTX Services, Inc. ("LGSTX") provides for the management of aircraft ground services.

In addition to its aircraft leasing and airline services, the Company offers a range of complementary services to delivery companies, freight forwarders, airlines and government customers. These include aircraft maintenance and modification services, aircraft parts supply, equipment maintenance services and load transfer and package sorting services for customers.

Basis of Presentation

The accompanying consolidated financial statements include the accounts of Air Transport Services Group, Inc. and its wholly-owned subsidiaries. Inter-company balances and transactions are eliminated. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP").

Investments in affiliates in which the Company has significant influence but does not exercise control are accounted for using the equity method of accounting. Under the equity method, the Company’s share of the nonconsolidated affiliate's income or loss is recognized in the consolidated statement of earnings and cumulative post-acquisition changes in the investment are adjusted against the carrying amount of the investment. Investments in affiliates in which the Company does not exercise control or have significant influence are reflected at cost less impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the consolidated financial statements. Estimates and assumptions are used to record allowances for uncollectible amounts, self-insurance reserves, spare parts inventory, depreciation and impairments of property, equipment, goodwill and intangibles, stock warrants and other financial instruments, post-retirement obligations, income taxes, contingencies and litigation. Changes in estimates and assumptions may have a material impact on the consolidated financial statements.

Cash and Cash Equivalents

The Company classifies short-term, highly liquid investments with maturities of three months or less at the time of purchase as cash and cash equivalents. These investments, consisting of money market funds, are recorded at cost, which approximates fair value. Substantially all deposits of the Company’s cash are held in accounts that exceed federally insured limits. The Company deposits cash in common financial institutions which management believes are financially sound.

Cash includes restricted cash of $6.2 million as of December 31, 2024 and $17.2 million as of December 31, 2023. Restricted cash consists of customers’ deposits held in an escrow account as required by DOT regulations.

The cash is restricted to the extent of customers’ deposits on flights not yet flown. Restricted cash is released from escrow upon completion of specific flights, which are scheduled to occur within the twelve months.

Table of Contents

Accounts Receivable and Allowance for Uncollectible Accounts

The Company's accounts receivable is primarily due from its significant customers (see Note C), other airlines, delivery companies and freight forwarders. The Company estimates expected credit losses over the lifetime of the customer receivables that are not past due. The Company also performs a quarterly evaluation of the accounts receivable and the allowance for uncollectible accounts by reviewing specific customers' recent payment history, growth prospects, financial condition and other factors that may impact a customer's ability to pay. The Company establishes allowances for amounts that are not expected to be received. Account balances are written off against the allowances when the Company ceases collection efforts.

Inventory

The Company’s inventory is composed primarily of expendable aircraft parts and supplies used for aircraft maintenance. Inventory is generally charged to expense when issued for use on a Company aircraft. The Company values its inventory of aircraft parts and supplies at weighted-average cost and maintains a related obsolescence reserve. The Company records an obsolescence reserve on a base stock of inventory. The Company monitors the usage rates of inventory parts and segregates parts that are technologically outdated or no longer used in its fleet types. Slow moving and segregated items are actively marketed and written down to their estimated net realizable values based on market conditions.

Management analyzes the inventory reserve for reasonableness at the end of each quarter. That analysis includes consideration of the expected fleet life, amounts expected to be on hand at the end of a fleet life, and recent events and conditions that may impact the usability or value of inventory. Events or conditions that may impact the expected life, usability or net realizable value of inventory include additional aircraft maintenance directives from the FAA, changes in DOT regulations, new environmental laws and technological advances.

Goodwill and Intangible Assets

The Company assesses, during the fourth quarter of each year, the carrying value of goodwill. The assessment requires an estimation of fair value of each reporting unit that has goodwill. The goodwill impairment test requires a comparison of the fair value of the reporting unit to its respective carrying value. If the carrying value of a reporting unit is less than its fair value no impairment exists. If the carrying amount of a reporting unit is higher than its fair value an impairment loss is recorded for the difference and charged to operations.

The Company assesses, during the fourth quarter of each year, whether it is more likely than not that an indefinite-lived intangible asset is impaired by considering all relevant events and circumstances that could affect the significant inputs used to determine the fair value of the indefinite-lived intangible asset.

The Company also conducts impairment assessments of goodwill, indefinite-lived intangible assets and finite-lived intangible assets whenever events or changes in circumstance indicate an impairment may have occurred. Finite-lived intangible assets are amortized over their estimated useful economic lives.

Property and Equipment

Property and equipment held for use is stated at cost, net of any impairment recorded. The Company accounts for planned major airframe and engine maintenance costs using the built-in overhaul method for the aircraft it owns, except the costs of airframe maintenance for Boeing 767-200 aircraft operated by ABX which are expensed as they are incurred. Under the built-in overhaul method, costs of planned airframe maintenance and engine overhauls are capitalized and depreciated by the Company's airlines over the expected period until the next scheduled major maintenance event is required. Major, non-scheduled airframe and engine maintenance costs that extend the life of the asset are also capitalized. The capitalized costs of airframe maintenance and engine overhauls for aircraft leased to customers, are depreciated over the life of the lease with consideration for the customer's return obligations.

Scheduled maintenance for the aircraft engines, including Boeing 777, Boeing 757 and Airbus A321 aircraft, are typically contracted to service providers on a time and material basis and the costs of those engine overhauls are capitalized and amortized over the life of the overhaul. Certain engines that power the Boeing 767 aircraft are maintained under "power by the cycle" agreements with engine maintenance providers. Under these agreements, the engines are maintained by the service provider for a fixed fee per cycle. As a result, the cost of maintenance for these engines is generally expensed as flights occur and the initial engine overhaul value is depreciated over the life of the engine.

Table of Contents

Property and equipment is depreciated over an asset's estimated useful life, or if related to a lease, over the lesser of the asset’s useful life or lease term. Assets are typically depreciated on a straight-line basis except for certain engines which are depreciated based on their usage levels during the period.

Depreciable lives are summarized as follows:

Boeing 777, 767 and 757 aircraft, Airbus A321 aircraft and flight equipment (years)			7 to 18
Ground equipment (years)			2 to 10
Leasehold improvements, facilities and office equipment (years)			3 to 25

The Company periodically evaluates the useful lives, salvage values and fair values of property and equipment. Acceleration of depreciation expense or the recording of significant impairment losses could result from changes in the estimated useful lives of assets due to a number of reasons, such as excess aircraft capacity or changes in regulations governing the use of aircraft.

The cost and accumulated depreciation of disposed property and equipment and expired major maintenance are removed from the accounts with any related gain or loss reflected in earnings from operations.

For aircraft leased from external lessors, the Company may be required to make periodic payments to the lessor under certain aircraft leases for future maintenance events such as engine overhauls and major airframe maintenance. Such payments are recorded as deposits until drawn for qualifying maintenance costs. The maintenance costs are expensed or capitalized in accordance with the airline's accounting policy for major airframe and engine maintenance. The Company evaluates at the balance sheet date, whether it is probable that an amount on deposit will be returned by the lessor to reimburse the costs of the maintenance activities. When it is less than probable that a deposit will be returned, it is recognized as additional maintenance expense.

Aircraft and other long-lived assets are tested for impairment when circumstances indicate the carrying value of the assets may not be recoverable. To conduct impairment testing, the Company groups assets and liabilities at the lowest level for which identifiable cash flows are largely independent of cash flows of other assets and liabilities. For assets that are to be held and used, impairment is recognized when the estimated undiscounted cash flows associated with the asset group are less than the carrying value. If impairment exists, an adjustment is recorded to write the assets down to fair value, and a loss is recorded as the difference between the carrying value and fair value. Fair values are determined considering quoted market values, discounted cash flows or internal and external appraisals, as applicable. For assets held for sale, impairment is recognized when the fair value less the cost to sell the asset is less than the carrying value.

Capitalized Interest

Interest costs incurred while aircraft are being modified are capitalized as an additional cost of the aircraft. Capitalized interest was $4.5 million, $8.2 million and $3.2 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Discontinued Operations

A business component whose operations are discontinued is reported as discontinued operations if the cash flows of the component have been eliminated from the ongoing operations of the Company and represents a strategic shift that had a major impact on the Company. The results of discontinued operations are aggregated and presented separately in the consolidated statements of operations.

Self-Insurance

The Company is self-insured for certain workers’ compensation, employee healthcare, automobile, aircraft, and general liability claims. The Company maintains excess claim coverage with common insurance carriers to mitigate its exposure to large claim losses. The Company records a liability for reported claims and an estimate for incurred claims that have not yet been reported. Accruals for these claims are estimated utilizing historical paid claims data and recent claims trends. Other liabilities included $5.0 million and $3.7 million at December 31, 2024 and December 31, 2023, respectively, for self-insured reserves. Changes in claim severity and frequency could result in actual claims being materially different than the costs accrued.

Table of Contents

Pension and Post-Retirement Benefits

The funded status of any of the Company's defined benefit pension or post-retirement health care plans is the difference between the fair value of plan assets and the accumulated benefit obligations to plan participants. The over funded or underfunded status of a plan is reflected in the consolidated balance sheet as an asset for over funded plans, or as a liability for underfunded plans.

The funded status is ordinarily re-measured annually at year end using the fair value of plans assets, market based discount rates and actuarial assumptions. Changes in the funded status of the plans as a result of re-measuring plan assets and benefit obligations, are recorded to accumulated comprehensive loss and amortized into expense using a corridor approach. The Company's corridor approach amortizes into earnings variances in plan assets and benefit obligations that are a result of the previous measurement assumptions when the net deferred variances exceed 10% of the greater of the market value of plan assets or the benefit obligation at the beginning of the year. The amount in excess of the corridor is amortized over the average remaining service period to retirement date of active plan participants. Cost adjustments for plan amendments are also deferred and amortized over the expected working life or the life expectancy of plan participants. Irrevocable settlement transactions that relieve the Company from responsibilities of providing retiree benefits and significantly eliminate the Company's related risk may result in recognition of gains or losses from accumulated other comprehensive loss. The plan's investment returns, interest expense, settlements and other non-service cost components of retiree benefits are reported in other income and expense included in earnings before income taxes.

Customer Security and Maintenance Deposits

The Company's customer leases typically obligate the lessee to maintain the Company's aircraft in compliance with regulatory standards for flight and aircraft maintenance. The Company may require an aircraft lessee to pay a security deposit or provide a letter of credit until the expiration of the lease. Additionally, the Company's leases may require a lessee to make monthly payments toward future expenditures for scheduled heavy maintenance events. The Company records security and maintenance deposits in other liabilities. If a lease requires monthly maintenance payments, the Company is typically required to reimburse the lessee for costs they incur for scheduled heavy maintenance events after completion of the work and receipt of qualifying documentation. Reimbursements to the lessee are recorded against the previously paid maintenance deposits.

Income Taxes

Income taxes have been computed using the asset and liability method, under which deferred income taxes are provided for the temporary differences between the financial reporting basis and the tax basis of the Company’s assets and liabilities. Deferred taxes are measured using provisions of currently enacted tax laws. A valuation allowance against net deferred tax assets is recorded when it is more likely than not that such assets will not be fully realized. Tax credits are accounted for as a reduction of income taxes in the year in which the credit originates. All deferred income taxes are classified as noncurrent in the statement of financial position.

The Company recognizes the benefit of a tax position taken on a tax return, if that position is more likely than not of being sustained on audit, based on the technical merits of the position. An uncertain income tax position is not recognized unless it is more likely than not the position will be sustained. The Company recognizes interest and penalties accrued related to uncertain tax positions in operating expense.

Purchase of Common Stock

The Company's Board of Directors has authorized management to repurchase outstanding common stock of the Company from time to time on the open market or in privately negotiated transactions. The authorization does not require the Company to repurchase a specific number of shares and the Company may terminate the repurchase program at any time. Upon the retirement of common stock repurchased, the excess purchase price over the par value for retired shares of common stock is recorded to additional paid-in-capital.

Table of Contents

Stock Warrants

Comprehensive Income

Comprehensive income includes net earnings and other comprehensive income or loss. Other comprehensive income or loss results from certain changes in the Company’s liabilities for pension and other post-retirement benefits, gains and losses associated with interest rate hedging instruments and fluctuations in currency exchange rates related to the foreign affiliate.

Fair Value Information

Assets or liabilities that are required to be measured at fair value are reported using the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. FASB ASC Topic 820-10 Fair Value Measurements and Disclosures establishes three levels of input that may be used to measure fair value:

•

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•

Level 2: Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include items where the determination of fair value requires significant management judgment or estimation.

Revenue Recognition

Aircraft and engine lease revenues are recognized as operating lease revenues on a straight-line basis over the term of the applicable lease agreements. Customer payments for leased aircraft and equipment are typically paid monthly in advance.

Revenues from contracts with customers are recognized under Accounting Standards Codification “Revenue from Contracts with Customers (Topic 606) ("ASC 606") to depict the transfer of goods or services to a customer at an amount that reflects the consideration the Company expects to receive in exchange for those goods or services. ACMI Services revenues are generated from airline service agreements and are typically based on hours or miles flown, the number of aircraft operated and number of crew resources provided during a month. ACMI Services revenues are usually recognized over time using the invoice practical expedient based on the number of hours or miles operated and the number of crews and aircraft required for scheduled flights during the period. Certain agreements include provisions for incentive payments based upon on-time reliability. These incentives are measured on a monthly basis and recorded to revenue in the corresponding month earned. Under CMI agreements, the Company's airlines have an obligation to provide integrated services including flight crews, aircraft maintenance and insurance for the customer's cargo network. Under ACMI agreements, the Company's airlines are also obligated to provide aircraft. Under CMI and ACMI agreements, customers are generally responsible for aviation fuel, landing fees, navigation fees and certain other flight expenses. When functioning as the customers' agent for arranging such services, the Company records amounts reimbursable from the customer as revenues net of the related expenses as the costs are incurred. Under charter agreements, the Company's airline is obligated to provide full services for one or more flights having specific origins and destinations. Under charter agreements in which the Company's airline is responsible for fuel, airport fees and all flight services, the related costs are recorded in operating expenses. Any sales commissions paid for charter agreements are generally expensed when incurred because the amortization period is less than one year. There are no customer rewards programs associated with services offered by the Company nor does the Company sell passenger tickets or issue freight bills. Customers for ACMI Services are invoiced monthly or more frequently.

Table of Contents

The Company's revenues for customer contracts for airframe maintenance and aircraft modification services that do not have an alternative use and for which the Company has an enforceable right to payment are generally recognized over time based on the percentage of costs completed. Services for airframe maintenance and aircraft modifications typically have project durations lasting a few weeks to several months. Other revenues for aircraft part sales, component repairs and line service are recognized at a point in time typically when the parts are delivered to the customer and the services are completed. For airframe maintenance, aircraft modifications and aircraft component repairs, contracts include assurance warranties that are not sold separately.

For its airframe maintenance and aircraft modification contracts, the Company typically records revenue based on the estimated transaction price using the costs to costs input method. For such services, the Company estimates the earnings on a contract as the difference between the expected revenue and estimated costs to complete a contract and recognizes revenues and earnings based on the proportion of costs incurred compared to the total estimated costs. Unexpected or abnormal costs that are not reflected in the price of a contract are excluded from calculations of progress toward contract obligations. The Company's estimates consider the timing and extent of the services, including the amount and rates of labor, materials and other resources required to perform the services. These production costs are specifically planned and monitored for regulatory compliance. The expenditure of these costs closely reflects the progress made toward completion of an airframe maintenance and aircraft modification project. The Company recognizes adjustments in estimated earnings on a contract under the cumulative catch-up method in which the impact of the adjustment on estimated earnings of a contract is recognized in the period the adjustment is identified.

The Company offers engine power coverage under separate customer contracts with certain lessees of CAM's General Electric powered Boeing 767-200 aircraft. Under this service, the Company is responsible for providing and maintaining engines to its lease customers as needed through a pool of engines. Revenues generated from engine power coverage contracts are recognized over time using the invoice practical expedient as engines are operated. Additionally, the Company acts as an agent for certain performance obligations for engine maintenance contracts with customers and recognizes the net amount of consideration retained. The transaction price for certain engine maintenance contracts are estimated and adjusted based upon expected engine cycles over the term of the contract and the estimated value of parts required for future services.

The Company's ground services revenues include load transfer and sorting services, implementation of material handling equipment, facility and equipment maintenance services. These revenues are recognized as the services are performed for the customer over time. Revenues from implementation services and facility and equipment maintenance services are recognized over time and at a point in time depending on the nature of the customer contracts.

For customers that are not a governmental agency or department, the Company generally receives partial payment in advance of services, otherwise customer balances are typically paid within 30 to 60 days of service.

Accounting Standards Updates

In August 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-06, "Accounting for Convertible Instruments and Contracts in an Entity's Own Equity" ("ASU 2020-06"). This new standard removes the separation models for convertible debt with cash conversion or beneficial conversion features. It eliminates the "treasury stock" method for convertible instruments and requires application of the “if-converted” method for certain agreements. The Company adopted ASU 2020-06 on January 1, 2022 using the modified retrospective approach which resulted in the following adjustments:

(in thousands)	December 31, 2021			Adoption of ASU 2020-06			January 1, 2022
Balance Sheet line item:
Principal value	$	(258,750	)	$	—		$	(258,750	)
Unamortized issuance cost	$	2,889		$	—		$	2,889
Unamortized discount	$	24,215		$	(24,215	)	$	—
Convertible Debt	$	(231,646	)	$	(24,215	)	$	(255,861	)
Net deferred tax liability	$	(217,291	)	$	5,527		$	(211,764	)
Additional paid-in capital	$	(1,074,286	)	$	39,559		$	(1,034,727	)
Retained earnings	$	(309,430	)	$	(20,871	)	$	(330,301	)

After adopting ASU 2020-06, the Company's 2017 Convertible Notes due 2024 (as defined and discussed in Note F) are reflected entirely as a liability as the embedded conversion feature is no longer separately presented within stockholders' equity, which also eliminated the non-cash discount. Accordingly, earnings no longer reflect the discount amortization expense which was $6.4 million of interest expense, net of income taxes during 2021. After giving effect for the adoption, the effective interest rate on the 2017 Convertible Notes is 1.5%.

Table of Contents

ASU 2020-06 requires the application of the more dilutive if-converted method when calculating the impact of the 2017 Convertible Notes on earnings per diluted share. The adoption of ASU 2020-06 does not change the accounting treatment of shares to be delivered by the convertible note hedges (see Note F) purchased by the Company that are designed to offset the shares issued to settle its 2017 Convertible Notes, which are anti-dilutive and not reflected in earnings per diluted share.

In December 2023, the FASB issued ASU No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." This standard enhances disclosures related to income taxes, including the rate reconciliation and information on income taxes paid. This ASU became effective for years beginning after January 1, 2025. The Company is assessing the impact of this ASU and upon adoption expects to include certain additional disclosures in the footnotes to its consolidated financial statements.

In November 2024, the FASB issued ASU No. 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40)." This standard requires disaggregated disclosure of income statement expenses for public business entities. This ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements disclosure of significant segment expenses and other segment items by reportable segment. ASU 2024-03 this ASU will become effective for the Company in 2027. The Company is assessing the impact of this ASU and upon adoption expects that any impact would be limited to additional expense disclosures in the footnotes to its consolidated financial statements.

NOTE B—GOODWILL, INTANGIBLES AND EQUITY INVESTMENTS

Goodwill reflects the excess purchase price over the estimated fair value of net assets acquired in a business acquisition. As of December 31, 2024, 2023 and 2022, the goodwill amounts for reporting units that have goodwill were separately tested for impairment. To perform the goodwill impairment test, the Company determined the fair value of the reporting units using industry market multiples and discounted cash flows utilizing a market-derived cost of capital (level 3 fair value inputs). The goodwill amounts were not impaired.

The carrying amounts of goodwill are as follows (in thousands):

	*CAM*		*ACMI Services*		*All Other*		*Total*
Carrying value as of December 31, 2022	$	153,290	$	234,571	$	8,113	$	395,974
Carrying value as of December 31, 2023	$	153,290	$	234,571	$	8,113	$	395,974
Carrying value as of December 31, 2024	$	153,290	$	234,571	$	8,113	$	395,974

The Company's acquired intangible assets are as follows (in thousands):

	*Airline*		*Amortizing*
	*Certificates*		*Intangibles*			*Total*
Carrying value as of December 31, 2022	$	9,000	$	87,668		$	96,668
Amortization		—		(10,215	)		(10,215	)
Carrying value as of December 31, 2023	$	9,000	$	77,453		$	86,453
Amortization		—		(15,103	)		(15,103	)
Carrying value as of December 31, 2024	$	9,000	$	62,350		$	71,350

The airline certificates have an indefinite life and therefore are not amortized. The Company amortizes finite-lived intangible assets, including customer relationship and STC intangibles, over 14 remaining years. The Company recorded intangible amortization expense of $15.1 million, $10.2 million and $12.5 million for the years ending December 31, 2024, 2023 and 2022, respectively. Estimated amortization expense for the next five years is $4.5 million each year.

Table of Contents

Warrants granted to Amazon.com, Inc. ("Amazon") as an incentive to lease aircraft from the Company and warrants granted to Amazon as an incentive to contract aircraft operations from the Company are reflected as a customer incentive asset. For additional information see Note C. Customer incentive asset activity is summarized as follow (in thousands):

	*Customer*
	*Incentive*
Carrying value as of December 31, 2022	$	79,650
Amortization		(18,689	)
Carrying value as of December 31, 2023	$	60,961
Amortization		(25,304	)
Warrants modified for operating incentive		66,820
Grants for lease incentive		18,184
Grants for operating incentive		5,043
Carrying value as of December 31, 2024	$	125,704

The customer incentive began to amortize in April 2016 with the commencement of certain aircraft leases. The amortization of the customer incentive asset is reflected as a reduction to revenues. In addition to the incentive amortization, revenue is also reduced to reflect the value of warrants recorded in paid in capital as they vest. As of December 31, 2024, based on the warrants granted to date, the Company expects to record amortization, as a reduction to the revenue, of $31.9 million, $27.2 million, $21.0 million, $18.8 million and $8.6 million for each of the next five years ending December 31, 2029.

The Company has a 49% ownership in a joint-venture agreement with Precision Aircraft Solutions, LLC, to develop a passenger-to-freighter conversion program for Airbus A321-200 aircraft. In April 2022, the Company acquired a 40% ownership interest in the joint-venture company GA Telesis Engine Services, LLC to provide engine tear-down services to harvest and sell engine parts. The Company accounts for its investment in these joint ventures under the equity method of accounting, in which the carrying value of each investment is reduced for the Company's share of the non-consolidated affiliates' operating results.

During the 2024 and 2022 years, the Company contributed $19.8 million and $14.9 million to 321 Precision Conversions, LLC, respectively. The Company made no contributions to 321 Precision Conversions, LLC during 2023. The Company also contributed $0.6 million, $1.6 million and $1.6 million to GA Telesis Engines Services, LLC during 2024, 2023 and 2022, respectively.

The carrying value of the joint ventures totaled $41.0 million and $22.7 million at December 31, 2024 and 2023, respectively, and are reflected in “Other Assets” in the Company’s consolidated balance sheets. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis in accordance with GAAP. If the Company determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded carrying value and the fair value of the investment. The fair value is generally determined using an income approach based on discounted cash flows or using negotiated transaction values.

NOTE C—SIGNIFICANT CUSTOMERS

Three customers each account for a significant portion of the Company's consolidated revenues. The percentage of the Company's revenues for the Company's three largest customers, for the years ended December 31, 2024, 2023 and 2022 are as follows:

	*Year Ended December 31,*
	*2024*		*2023*		*2022*
Customer	*Percentage of Revenue*
DoD	29	%	30	%	30	%
Amazon	33	%	34	%	34	%
DHL	14	%	12	%	12	%

Table of Contents

The accounts receivable from the Company's three largest customers as of December 31, 2024 and 2023 are as follows (in thousands):

	*Year Ending December 31,*
	*2024*		*2023*
Customer	*Accounts Receivable*
DoD	$	45,685	$	56,848
Amazon		83,894		74,509
DHL		14,188		8,040

DoD

The Company is a provider of cargo and passenger airlift services to the U.S. Department of Defense ("DoD"). The Company's airlines are eligible to bid for military charter operations for passenger and cargo transportation through contracts awarded by the DoD. The airlines draw from the Company's fleet of Boeing 757 combi, Boeing 777 passenger, Boeing 767 passenger and Boeing 767 freighter aircraft for the DoD operations. The DoD awards flights to U.S. certificated airlines through annual contracts and through temporary "expansion" routes.

DHL

The Company has had long-term contracts with DHL Network Operations (USA), Inc. and its affiliates ("DHL") since August 2003. The Company leases Boeing 767 aircraft to DHL under both long-term and short-term lease agreements. Under a separate crew, maintenance and insurance (“CMI”) agreement, the Company operates Boeing 767 aircraft that DHL leases from the Company. Pricing for services provided through the CMI agreement is based on pre-defined fees, scaled for the number of aircraft operated and the number of flight crews provided to DHL for its U.S. network. The Company provides DHL with scheduled maintenance services for aircraft that DHL leases. The Company also provides additional air cargo transportation services for DHL through ACMI agreements in which the Company provides the aircraft, crews, maintenance and insurance under a single contract. As of December 31, 2024, the Company leased 14 Boeing 767 freighter aircraft to DHL composed of one Boeing 767-200 aircraft and 13 Boeing 767-300 aircraft, with expirations between 2025 and 2031. Further, beginning in third quarter of 2022, the Company began to operate four Boeing 767 aircraft provided by DHL under an additional CMI agreement which currently runs through August 2027. The Company also operates two Boeing 767-200 provided by DHL.

Amazon

The Company has been providing freighter aircraft, airline operations and services for cargo handling and logistical support for ASI, successor to Amazon.com Services, Inc., a subsidiary of Amazon.com, Inc. ("Amazon") since September 2015. On March 8, 2016, the Company entered into an Air Transportation Services Agreement (the “ATSA”) with ASI, pursuant to which CAM leases Boeing 767 freighter aircraft to ASI. The ATSA also provides for the operation of aircraft by the Company’s airline subsidiaries, and the management of ground services by the Company's subsidiary LGSTX Services, Inc. ("LGSTX"). As of December 31, 2024, the Company leased 30 Boeing 767 freighter aircraft to ASI with lease expirations between 2026 and 2031. Additionally under the ATSA, the Company operated 21 Boeing 767 freighter aircraft provided by ASI as of December 31, 2024.

Amazon Investment Agreement

On December 22, 2018, the Company entered into an Amended and Restated Air Transportation Services Agreement (“A&R ATSA”) with ASI, pursuant to which the Company, through CAM and its airline subsidiaries, agreed to (1) lease and operate ten additional Boeing 767-300 aircraft for ASI under the A&R ATSA, (2) extend the term of the 12 Boeing 767-200 aircraft then leased to ASI by two years to 2023 with an option for three more years, (3) extend the term of the eight Boeing 767-300 aircraft currently leased to ASI by three years to 2026 and 2027 with an option for three more years, and (4) extend the ATSA by five years through March 2026, with an option to extend for an additional three years. The Company leased all 10 of the 767-300 aircraft in 2020. In conjunction with the commitment to lease 10 additional Boeing 767-300 aircraft, extend the duration of 20 existing Boeing 767 aircraft leases and the ATSA, Amazon and ATSG entered into an Investment Agreement on December 20, 2018 (as amended, the “2018 Investment Agreement”). Pursuant to the 2018 Investment Agreement, ATSG issued to Amazon warrants for 14.8 million common shares of ATSG, all of which have vested. The warrants have an exercise price of $21.53 per share. On May 6, 2024, this group of warrants was modified to extend their expiration date from December 2025 to December of 2029 in conjunction with the 3rd A&R ATSA described below.

Table of Contents

On May 29, 2020, the Company entered into a Second Amended and Restated Air Transportation Services Agreement (the “2nd A&R ATSA”) with ASI, pursuant to which the Company agreed to lease 12 more Boeing 767-300 aircraft to ASI for operation by the Company’s airline subsidiaries. The first of these leases began in the second quarter of 2020 with the remaining 11 delivered in 2021. All 12 of these aircraft leases were for 10-year terms. Pursuant to the 2018 Investment Agreement, as a result of leasing 12 aircraft, Amazon was issued warrants for 7.0 million common shares, all of which have vested. The exercise price of these warrants is $20.40 per share. On May 6, 2024, this group of warrants was modified to extend their expiration date from December 2025 to December of 2029 in conjunction with the 3rd A&R ATSA.

Prior to May 6, 2024 Amazon could earn additional warrants for up to 2.9 million common shares under the 2018 Investment Agreement by leasing up to five more cargo aircraft from the Company before January 2026. Incremental warrants granted for ASI’s commitment to any such future aircraft leases would have had an exercise price based on the volume-weighted average price of the Company’s common shares during the 30 trading days immediately preceding the contractual commitment for each lease. This right to earn warrants was replaced on May 6, 2024 as noted below.

On May 6, 2024, the Company entered into a Third Amended and Restated Air Transportation Services Agreement with ASI (the “3rd A&R ATSA”) pursuant to which the Company, through its subsidiary air carriers, will sublease and operate 10 additional Boeing 767-300 freighter aircraft to be provided by ASI, with the potential to add up to 10 additional Boeing 767-300 freighter aircraft. The Company’s subsidiary air carriers began operating the initial group of ten aircraft by December 31, 2024. The initial term of the 3rd A&R ATSA runs through May 6, 2029, and may be extended by the parties for an additional five years subject to mutual agreement. In conjunction with the execution of the 3rd A&R ATSA, the Company issued warrants to Amazon.

The first of the warrants issued on May 6, 2024 was for up to 2.9 million common shares of ATSG (the “2024 Subsequent Warrant”). The 2024 Subsequent Warrant vests in four equal tranches of 728,750 shares of ATSG common stock on its issue date and each of the first three anniversaries thereof; provided that, for each of the second, third and fourth tranches, Amazon has compensated ATSG for a certain number of flight hours in a specified period immediately preceding such anniversary. The 2024 Subsequent Warrant has a term of seven years, and the exercise price is $12.9658 per share of ATSG common stock. As partial consideration for the 3rd A&R ATSA, the 2024 Subsequent Warrant was issued to replace Amazon’s prior warrant right under the 2018 Investment Agreement to earn up to 2.9 million common shares related to aircraft leases commitments described above.

Also on May 6, 2024, in conjunction with the execution of the 3rd A&R ATSA, the Company and Amazon agreed upon the form of the warrant to be issued to purchase up to 2.9 million additional common shares (the “Third Subsequent Warrant”). The Third Subsequent Warrant was issued by the Company on November 8, 2024, in conjunction with the addition of the tenth incremental aircraft placed into service for Amazon pursuant to the 3rd A&R ATSA. The Third Subsequent Warrant will vest in (i) one tranche of 291,500 shares of ATSG common stock upon Amazon’s entry into each aircraft lease extension with ATSG of at least three years in duration, and (ii) four equal tranches of 72,875 shares of ATSG common stock upon each placement by Amazon of additional aircraft into service with ATSG (i.e., aircraft beyond the tenth initial aircraft, up to a maximum of 10 additional aircraft), with the first tranche vesting with the placement of the aircraft into service and the remaining tranches vesting on each of the first three anniversaries thereof; provided that, for each of the second, third and fourth tranches, Amazon has compensated ATSG for a certain number of flight hours in a specified period immediately preceding such anniversary plus a certain number of flight hours per additional aircraft placed into service during such specified period. The Third Subsequent Warrant will have a term of seven years and the exercise price is $15.89 per share of ATSG common stock.

Additionally, on May 6, 2024, the expiration dates for the two existing vested warrants totaling 21.8 million shares (the warrants issued on December 20, 2018 for 14.8 million shares (the "Warrant-C") and the warrants issued on May 29, 2020, for 7.0 million shares (the "2020 Subsequent Warrant") issued pursuant to the 2018 Investment Agreement, were extended from December 2025 to December of 2029.

Table of Contents

The Company’s accounting for warrants granted to a customer is determined in accordance with the financial reporting guidance for equity-based payments to non-employees and for financial instruments. Warrants conditionally promised to a customer related to the lease of aircraft and lease extensions were recorded as an incentive asset using their fair value at the projected time of issuance if they are probable of vesting at the time of grant. The incentive is amortized against revenues over the duration of the related lease term. The warrants granted in conjunction with aircraft lease incentives were recorded as liabilities at the time of grant and will be reclassified to additional paid in capital at the time of the last vesting event. Warrants classified as liabilities are re-measured to fair value at the end of each reporting period. The vested warrants issued as an incentive for aircraft services were recorded as an incentive asset and are being amortized over the service contract period. The unvested warrants issued for aircraft services are recognized as additional paid in capital and contra revenue during their related vesting period. The extension of expiration dates from December 2025 to December 2029 that took place on May 6, 2024, for 21.8 million vested warrants resulted in a value re-measurement of $66.8 million which was recorded as a customer incentive asset and is being amortized to May 2029, the end of the initial term of the 3rd A&R ATSA. The Company’s earnings in future periods will be impacted by the vesting of additional warrants, the re-measurements of warrant fair values, amortizations of the incentive and the related income tax effects. For income tax calculations, the value and timing of related tax deductions may differ from that used for financial reporting.

As of December 31, 2024 and 2023, the Company's liabilities reflected warrants and Amazon sale options having a fair value of $17.8 million and $1.7 million, respectively. During the years ended December 31, 2024, 2023 and 2022, the re-measurements of warrants and sale options to fair value resulted in pre-tax gains of $2.2 million, pre-tax losses of $1.0 million and pre-tax gains of $0.2 million, respectively.

Warrant grants for common shares, in million, are summarized below as of December 31, 2024:

	*Vested*		*Non-Vested*
December 31, 2023		21.8		2.9
New grants		0.7		5.1
December 31, 2024		22.5		8.0

For all outstanding warrants vested, Amazon may select a cashless conversion option. If the per share price of ATSG common stock at the time of conversion is greater than the warrant exercise price and Amazon elects the cashless conversion option, Amazon would receive common shares equal to the full number of shares underlying the exercised warrant less the number of common shares having a market value equal to the aggregate exercise price. Unvested warrants will be impacted by the Merger, as described in Note P.

Amazon is required to vote shares of ATSG it owns in excess of 14.9% of the outstanding shares in accordance with the recommendations of the ATSG Board of Directors (the "Board").

ATSG began certain repurchases of its own shares during October 2022 in conjunction with the expiration of certain government restrictions stemming from the Coronavirus Aid, Relief and Economic Security Act. Pursuant to the Investment Agreement, dated March 8, 2016, between Amazon and ATSG (as amended, the “2016 Investment Agreement”), if ATSG repurchases its own common shares, Amazon has the option to sell shares of ATSG common stock to ATSG to maintain its ownership percentage of less than 19.9% of ATSG's outstanding common shares. Pursuant to such terms, on August 14, 2023, Amazon sold 1,177,000 shares of ATSG common stock back to ATSG for cash of $22.9 million. An option for Amazon to sell a certain number of shares to ATSG under certain conditions at a firm price was modified with the May 6, 2024 amendment to the 2016 Investment Agreement in favor an agreement that the sale price shall be the volume weighted average price of ATSG’s common stock for the 30 trading days preceding ATSG’s notice to Amazon of a repurchase program. Any sale election by Amazon that creates an obligation for ATSG to purchase the shares of ATSG’s common stock designated by Amazon is limited to the volume of ATSG common stock that would reduce Amazon’s beneficial ownership of ATSG common stock to 19.5% of the then issued and outstanding amount.

The Company's earnings in future periods will be impacted by the re-measurements of warrant fair value, amortizations of the lease incentive asset and the related income tax effects. For income tax calculations, the value and timing of related tax deductions will differ from the guidance described above for financial reporting.

NOTE D—FAIR VALUE MEASUREMENTS

The Company’s money market funds and interest rate swaps are reported on the Company’s consolidated balance sheets at fair values based on market values from comparable transactions. The fair value of the Company’s money market funds, convertible note, convertible note hedges and interest rate swaps are based on observable inputs (Level 2) from comparable market transactions.

Table of Contents

The fair value of the stock warrant obligations to ASI were determined using a Black-Scholes pricing model which considers various assumptions, including ATSG's common stock price, the volatility of ATSG's common stock, the expected dividend yield, exercise price and the risk-free interest rate (Level 2 inputs). The fair value of the stock warrant obligations for unvested stock warrants, conditionally granted to Amazon for the execution of incremental, future aircraft leases, include additional assumptions including the expected exercise prices and the probabilities that future vesting events will occur (Level 3 inputs). The fair value of the sale option for Amazon to sell back shares to the Company under certain conditions was determined based on future share repurchase scenarios. Judgment was applied to determine the number of shares that would be repurchased.by the Company at a certain price and the probability of each scenario (Level 3 inputs).

The following table reflects assets and liabilities that are measured at fair value on a recurring basis (in thousands):

As of December 31, 2024	*Fair Value Measurement Using*
	*Level 1*		*Level 2*		*Level 3*			*Total*
Assets
Cash equivalents—money market	$	—	$	1,428	$	—		$	1,428
Interest rate swap		—		97		—			97
Total Assets	$	—	$	1,525	$	—		$	1,525
Liabilities
Stock warrant obligations	$	—	$	—	$	(17,752	)	$	(17,752	)
Total Liabilities	$	—	$	—	$	(17,752	)	$	(17,752	)

As of December 31, 2023	*Fair Value Measurement Using*
	*Level 1*		*Level 2*			*Level 3*			*Total*
Assets
Cash equivalents—money market	$	—	$	1,248		$	—		$	1,248
Total Assets	$	—	$	1,248		$	—		$	1,248
Liabilities
Interest rate swap	$	—	$	(529	)	$	—		$	(529	)
Sale option		—		—			(1,258	)		(1,258	)
Stock warrant obligations		—		—			(471	)		(471	)
Total Liabilities	$	—	$	(529	)	$	(1,729	)	$	(2,258	)

At December 31, 2024 and 2023, unvested stock warrants from the 2018 Amazon agreement were valued using additional assumptions for an expected grant date, expected exercise price, the risk free rate to the expected grant date and the probabilities that future leases will occur.

As a result of higher market interest rates compared to the stated interest rates of the Company’s fixed rate debt obligations, the fair value of the Company’s debt obligations, based on Level 2 observable inputs, was approximately $9.5 million less than the carrying value, which was $1,548.7 million at December 31, 2024. As of December 31, 2023, the fair value of the Company’s debt obligations was approximately $97.6 million less than the carrying value, which was $1,762.3 million. The non-financial assets, including goodwill, intangible assets and property and equipment are measured at fair value on a non-recurring basis.

NOTE E—PROPERTY AND EQUIPMENT

The Company's property and equipment consists primarily of cargo aircraft, aircraft engines and other flight equipment. Property and equipment, to be held and used, is summarized as follows (in thousands):

	*December 31,*			*December 31,*
	*2024*			*2023*
Flight equipment	$	4,226,411		$	3,865,049
Ground equipment		69,303			72,463
Leasehold improvements, facilities and office equipment		45,463			42,120
Aircraft modifications and projects in progress		352,733			638,631
		4,693,910			4,618,263
Accumulated depreciation		(1,941,605	)		(1,797,494	)
Property and equipment, net	$	2,752,305		$	2,820,769

Table of Contents

Aircraft modification projects include $25.6 million of payments for future conversions as of December 31, 2024. CAM owned aircraft with a carrying value of $1,780.6 million and $1,640.9 million that were under lease to external customers as of December 31, 2024 and 2023, respectively.

NOTE F—DEBT OBLIGATIONS

Debt obligations consisted of the following (in thousands):

	*December 31, 2024*			*December 31, 2023*

Revolving credit facility		569,000			730,000
Senior notes		579,054			578,574
Convertible notes		392,049			444,420
Other financing arrangements		8,638			9,288
Total debt obligations		1,548,741			1,762,282
Less: current portion		(661	)		(54,710	)
Total long term obligations, net	$	1,548,080		$	1,707,572

The Company is a party to a syndicated credit agreement (as amended, the “Senior Credit Agreement”) which includes the ability to execute term loans and a revolving credit facility. The Senior Credit Agreement includes a revolving credit facility of up to $1 billion, has a maturity date of October 19, 2027, requires a collateral to outstanding loan ratio of 1.25:1:00 and permits cash dividends and share repurchases provided the secured leverage ratio is less than 3.00 to 1.00 and the total leverage ratio is less than 3.50 to 1.00. The interest rate under the Senior Credit Agreement is a pricing premium added to the Secured Overnight Financing Rate defined therein ("SOFR") based upon the ratio of the Company’s debt to its earnings before interest, taxes, depreciation and amortization expenses (“EBITDA”) as defined under the Senior Credit Agreement. Under the terms of the Senior Credit Agreement, interest rates are adjusted at least quarterly based on the Company’s EBITDA, its outstanding debt level and prevailing SOFR or prime rates. At the Company’s debt-to-EBITDA ratio as of December 31, 2024, the SOFR-based financing for the revolving credit facility bears a variable interest rate of 5.90%. As of December 31, 2024, the unused revolving credit facility available to the Company at the trailing 12-month EBITDA level was $341.6 million, and additional permitted indebtedness under the Senior Credit Agreement subject to compliance with other covenants.

The Senior Credit Agreement is collateralized by certain of the Company’s Boeing 777, 767 and 757 aircraft. Under the terms of the Senior Credit Agreement, the Company is required to maintain certain collateral coverage ratios set forth in the Senior Credit Agreement. The Senior Credit Agreement contains covenants, including a maximum permitted total EBITDA to debt ratio, a fixed charge covenant ratio requirement, and limitations on certain additional indebtedness and on guarantees of indebtedness. The Senior Credit Agreement stipulates events of default, including unspecified events that may have material adverse effects on the Company. If an event of default occurs, the Company may be forced to repay, renegotiate or replace the Senior Credit Agreement. The Company has an additional revolving credit facility domiciled in Ireland (the “Irish Facility”). The terms and conditions of the Irish Facility are similar to the Senior Credit Agreement in the U.S. The Irish Facility has a maximum capacity of $100.0 million, including a $7.5 million letter of credit sub-facility, and has the ability to be upsized using the same accordion feature that is present in the Senior Credit Agreement. The maturity date of the Irish Facility is the same as the Senior Credit Agreement.

On August 14, 2023 the Company issued $400.0 million aggregate principal amount of Convertible Senior Notes due 2029 (“2023 Convertible Notes”). These notes were issued in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “1933 Act”). The 2023 Convertible Notes bear interest at a rate of 3.875% per year payable semi-annually in arrears on February 15 and August 15 each year, beginning February 15, 2024. The 2023 Convertible Notes mature on August 15, 2029, unless earlier purchased, redeemed or converted in accordance with their terms prior to such date. The 2023 Convertible Notes are unsecured indebtedness, subordinated to the Company’s existing and future secured indebtedness and other liabilities, including trade payables.

Table of Contents

Conversion of the 2023 Convertible Notes can only occur upon satisfaction of certain conditions and during certain periods, beginning any calendar quarter commencing after December 31, 2023 and thereafter, until the close of business on the second scheduled trading day immediately preceding the maturity date. The Company will settle the principal value of the notes in cash. The initial conversion rate is 31.2864 common shares per $1,000 principal amount of 2023 Convertible Notes (equivalent to an initial conversion price of approximately $31.96 per common share). If a “make-whole fundamental change” (as defined in the offering circular with the 2023 Convertible Notes) occurs, ATSG will, in certain circumstances, increase the conversion rate for a specified period of time. Upon the occurrence of certain fundamental changes, holders of the Convertible Notes can require the Company to repurchase their notes for a cash repurchase price equal to the principal amount of the notes, plus any accrued and unpaid interest.

The Company used a portion of the proceeds from the 2023 Convertible Notes to repurchase 5,435,777 shares of its common stock concurrently with offering of the 2023 Convertible Notes. Additionally, the Company used a portion of the proceeds to repurchase $204.5 million principal amount of its outstanding 1.125% Convertible Senior Notes issued in 2017 (the “2017 Convertible Notes”). The Company used the remainder of the proceeds from the offering to satisfy fees and expenses associated with the offering, to repay a portion of the outstanding borrowings under its revolving credit facility and for general corporate purposes.

On January 28, 2020, the Company, through its CAM subsidiary, completed a debt offering of $500.0 million in senior unsecured notes (the “Senior Notes”) that were guaranteed by ATSG and certain of its other subsidiaries. The Senior Notes were sold only to qualified institutional buyers in the United States pursuant to Rule 144A under the 1933 Act, and certain investors pursuant to Regulation S under the 1933 Act. The Senior Notes are senior unsecured obligations that bear interest at a fixed rate of 4.75% per year, payable semiannually in arrears on February 1 and August 1 of each year, beginning on August 1, 2020. The Senior Notes will mature on February 1, 2028. The Senior Notes contain customary events of default and certain covenants which are generally no more restrictive than those set forth in the Senior Credit Agreement. On April 13, 2021, the Company, through a subsidiary, completed its offering of $200.0 million of additional notes (“Additional Senior Notes”) under the existing Senior Notes. The Additional Senior Notes are fully fungible with the Senior Notes, treated as a single class for all purposes under the indenture governing the existing notes with the same terms as those of the existing notes (other than issue date and issue price). The proceeds of $205.5 million, net of scheduled interest payable, were used, in conjunction with draws from the revolving credit facility to repay the unsubordinated term loans. Upon retirement of the unsubordinated term loans, the Company expensed debt issuance costs of $6.5 million related to the unsubordinated term loans.

The balance of the Senior Notes is net of debt issuance costs of $3.2 million and $4.3 million as of December 31, 2024 and December 31, 2023, respectively. The Senior Notes do not require principal payments until maturity, but prepayments are allowed without penalty beginning February 1, 2025.

In September 2017, the Company issued $258.8 million aggregate principal amount of 1.125% Convertible Senior Notes due 2024 (the "2017 Convertible Notes") in a private offering to qualified institutional buyers pursuant to Rule 144A under the 1933 Act. The 2017 Convertible Notes matured on October 15, 2024. The 2017 Convertible Notes were unsecured indebtedness, subordinated to the Company’s existing and future secured indebtedness and other liabilities, including trade payables. The 2017 Convertible Notes bore interest at a rate of 1.125% per year payable semi-annually in arrears on April 15 and October 15 each year, beginning April 15, 2018. In conjunction with the 2017 Convertible Notes, the Company purchased convertible note hedges under privately negotiated transactions for $56.1 million, having the same number of ATSG common shares (8.1 million shares at that time) and same strike price ($31.90) that underlaid the 2017 Convertible Notes. The convertible note hedges were intended to reduce the potential equity dilution with respect to ATSG common shares, and/or offset any cash payments in excess of the principal amount due, as the case may be, upon conversion of the 2017 Convertible Notes. In conjunction with the offering of the 2017 Convertible Notes, the Company also sold warrants to the convertible note hedge counterparties in separate, privately negotiated warrant transactions at a higher strike price and for the same number of the Company’s common shares, subject to customary anti-dilution adjustments. On August 14, 2023, the Company repurchased outstanding 2017 Convertible Notes having a principal value of $204.5 million in the open market, reducing the 2017 Convertible Notes carrying value to $54.2 million. The Company recognized a pre-tax gain of $1.3 million, net of fees, which was recorded under net gain on financial instruments on the income statement during the corresponding period. In conjunction with the repurchase of the 2017 Convertible Notes, the Company settled a pro-rata portion of the related warrants and note hedges and received $1.3 million in net cash proceeds. As of December 31, 2024 the warrants could result in 1.7 million additional shares if the Company's traded market price exceeds the strike price which is $41.35 per share and is subject to certain adjustments under the terms of the warrant transactions.

Table of Contents

The carrying value of the Company’s convertible debt is shown below (in thousands):

	*2017 Convertible Notes*			*2024 Convertible Notes*			*Total Convertible Notes*
Principal Value December 31, 2023	$	54,225		$	400,000		$	454,225
Settlement of convertible debt		(54,225	)		—			(54,225	)
Unamortized issuance cost		—			(7,951	)		(7,951	)
Convertible Debt December 31, 2024	$	—		$	392,049		$	392,049

In October 2024, upon maturity, the Company settled all of the principal due for the 2017 Convertible Notes in cash using the Company's revolving credit facility.

The scheduled cash principal payments for the Company's debt obligations, as of December 31, 2024, for the next five years are as follows (in thousands):

	*Principal*
	*Payments*
2025	$	661
2026		672
2027		569,686
2028		580,735
2029		400,709
2030 and beyond		5,215
Total principal cash payments		1,557,678
Less: unamortized issuance costs, premiums and discounts		(8,937	)
Total debt obligations	$	1,548,741

NOTE G—DERIVATIVE INSTRUMENTS

The Company maintains derivative instruments for protection from fluctuating interest rates. The table below provides information about the Company’s interest rate swaps (in thousands):

				*December 31, 2024*					*December 31, 2023*
	*Stated*					*Market*					*Market*
	*Interest*			*Notional*		*Value*			*Notional*		*Value*
Expiration Date	*Rate*			*Amount*		*(Liability)*			*Amount*		*(Liability)*
March 31, 2026		3.793	%		50,000		187			50,000		237
March 31, 2026		3.836	%		50,000		158			50,000		189
June 30, 2026		4.257	%		50,000		(157	)		50,000		(525	)
June 30, 2026		4.185	%

Air Transport Services Group, Inc. 10-K