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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

 Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2025

 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: 1-7615

KIRBY CORPORATION

(Exact name of registrant as specified in its charter)

     Nevada

     74-1884980
(I.R.S. Employer Identification No.)

     (State or other jurisdiction of incorporation or organization)

     55 Waugh Drive, Suite 1000
Houston, TX

     77007

     (Address of principal executive offices)

     (Zip Code)

713-435-1000

(Registrant’s telephone number, including area code)

No Change

(Former name, former address and former fiscal year, if changed since last report)

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


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	KEX	New York Stock Exchange

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 Regulations S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post 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	
Non-accelerated filer		Smaller reporting company	
		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. 

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

As of May 9, 2025, 56.1 million shares of the Registrant’s $0.10 par value per share common stock were outstanding.

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

CONDENSED BALANCE SHEETS

(Unaudited)


	March 31, 2025			December 31, 2024
	($ in thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	51,078		$	74,444
Accounts receivable:
Trade – less allowance for doubtful accounts		505,617			489,857
Other		48,003			46,888
Inventories – net		434,706			393,898
Prepaid expenses and other current assets		62,876			63,472
Total current assets		1,102,280			1,068,559

Property and equipment		6,310,311			6,123,208
Accumulated depreciation		(2,161,012	)		(2,100,242	)
Property and equipment – net		4,149,299			4,022,966

Operating lease right-of-use assets		157,903			158,990
Goodwill		438,748			438,748
Other intangibles, net		32,275			34,406
Other assets		134,096			128,283
Total assets	$	6,014,601		$	5,851,952

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Bank notes payable	$	7,337		$	8,226
Income taxes payable		21,927			25,417
Accounts payable		272,163			251,354
Accrued liabilities		190,412			236,813
Current portion of operating lease liabilities		35,417			35,727
Deferred revenues		171,327			177,216
Total current liabilities		698,583			734,753

Long-term debt, net – less current portion		1,091,032			866,722
Deferred income taxes		741,417			739,472
Operating lease liabilities – less current portion		146,250			148,170
Other long-term liabilities		9,565			9,587
Total long-term liabilities		1,988,264			1,763,951

Contingencies and commitments		—			—

Equity:
Kirby stockholders’ equity:
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares		6,547			6,547
Additional paid-in capital		865,007			868,763
Accumulated other comprehensive income – net		69,633			71,192
Retained earnings		3,054,358			2,978,372
Treasury stock – at cost, 9.1 million shares at March 31, 2025 and 8.2 million at December 31, 2024		(669,510	)		(573,061	)
Total Kirby stockholders’ equity		3,326,035			3,351,813
Noncontrolling interests		1,719			1,435
Total equity		3,327,754			3,353,248
Total liabilities and equity	$	6,014,601		$	5,851,952

See accompanying notes to condensed financial statements.

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

CONDENSED STATEMENTS OF EARNINGS

(Unaudited)


	Three Months Ended March 31,
	2025			2024
	($ in thousands, except per share amounts)
Revenues:
Marine transportation	$	476,149		$	475,412
Distribution and services		309,510			332,610
Total revenues		785,659			808,022

Costs and expenses:
Costs of sales and operating expenses		512,336			550,681
Selling, general and administrative		95,287			90,206
Taxes, other than on income		8,830			8,044
Depreciation and amortization		63,730			57,642
Gain on disposition of assets		(70	)		(74	)
Total costs and expenses		680,113			706,499

Operating income		105,546			101,523
Other income		5,334			3,269
Interest expense		(10,537	)		(13,151	)

Earnings before taxes on income		100,343			91,641
Provision for taxes on income		(24,073	)		(21,726	)

Net earnings		76,270			69,915
Net (earnings) loss attributable to noncontrolling interests		(284	)		153

Net earnings attributable to Kirby	$	75,986		$	70,068

Net earnings per share attributable to Kirby common stockholders:
Basic	$	1.33		$	1.20
Diluted	$	1.33		$	1.19

See accompanying notes to condensed financial statements.

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)


	Three Months Ended March 31,
	2025			2024
	($ in thousands)
Net earnings	$	76,270		$	69,915

Other comprehensive loss, net of taxes:
Pension and postretirement benefits		(1,867	)		(395	)
Foreign currency translation adjustments		308			—
Total other comprehensive loss, net of taxes		(1,559	)		(395	)

Total comprehensive income, net of taxes		74,711			69,520
Net (earnings) loss attributable to noncontrolling interests		(284	)		153

Comprehensive income attributable to Kirby	$	74,427		$	69,673

See accompanying notes to condensed financial statements.

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

CONDENSED STATEMENTS OF CASH FLOWS
(Unaudited)


	Three Months Ended March 31,
	2025			2024
	($ in thousands)
Cash flows from operating activities:
Net earnings	$	76,270		$	69,915
Adjustments to reconcile net earnings to net cash provided by operations:
Depreciation and amortization		63,730			57,642
Provision for deferred income taxes		2,570			9,411
Amortization of share-based compensation		7,847			6,408
Amortization of major maintenance costs		7,185			8,345
Other		1,246			1,607
Decrease in cash flows resulting from changes in operating assets and liabilities, net		(122,307	)		(30,040	)
Net cash provided by operating activities		36,541			123,288

Cash flows from investing activities:
Capital expenditures		(78,687	)		(81,047	)
Acquisitions of businesses and marine equipment		(97,250	)		—
Proceeds from disposition of assets		81			2,412
Net cash used in investing activities		(175,856	)		(78,635	)

Cash flows from financing activities:
Borrowings on bank credit facilities, net		224,110			43,575
Payment of debt issuance costs		—			(3	)
Proceeds from exercise of stock options		262			1,509
Payments related to tax withholding for share-based compensation		(5,949	)		(5,284	)
Treasury stock purchases		(101,473	)		(41,787	)
Other		(1,001	)		(24	)
Net cash provided by (used in) financing activities		115,949			(2,014	)
Increase (decrease) in cash and cash equivalents		(23,366	)		42,639

Cash and cash equivalents, beginning of year		74,444			32,577
Cash and cash equivalents, end of period	$	51,078		$	75,216

Supplemental disclosures of cash flow information:
Cash paid during the period:
Interest paid	$	17,711		$	21,511
Income taxes paid, net	$	24,994		$	1,062
Operating cash outflow from operating leases	$	11,749		$	11,256
Non-cash investing activity:
Capital expenditures included in accounts payable	$	(12,011	)	$	1,590
Right-of-use assets obtained in exchange for lease obligations	$	5,516		$	5,088

See accompanying notes to condensed financial statements.

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

CONDENSED STATEMENTS OF STOCKHOLDERS’ EQUITY

(Unaudited)


								Accumulated
					Additional			Other
	Common Stock				Paid-in-			Comprehensive			Retained		Treasury Stock						Noncontrolling
	Shares		Amount		Capital			Income, Net			Earnings		Shares			Amount			Interests		Total
	(in thousands)
Balance at December 31, 2024		65,472	$	6,547	$	868,763		$	71,192		$	2,978,372		(8,215	)	$	(573,061	)	$	1,435	$	3,353,248
Stock option exercises		—		—		27			—			—		4			235			—		262
Issuance of stock for equity awards, net of forfeitures		—		—		(11,630	)		—			—		165			11,630			—		—
Tax withholdings on equity award vesting		—		—		—			—			—		(55	)		(5,949	)		—		(5,949	)
Amortization of share-based compensation		—		—		7,847			—			—		—			—			—		7,847
Treasury stock purchases		—		—		—			—			—		(1,003	)		(101,473	)		—		(101,473	)
Excise taxes on treasury stock purchases		—		—		—			—			—		—			(892	)		—		(892	)
Total comprehensive income, net of taxes		—		—		—			(1,559	)		75,986		—			—			284		74,711
Balance at March 31, 2025		65,472	$	6,547	$	865,007		$	69,633		$	3,054,358		(9,104	)	$	(669,510	)	$	1,719	$	3,327,754


								Accumulated
					Additional			Other
	Common Stock				Paid-in-			Comprehensive			Retained		Treasury Stock						Noncontrolling
	Shares		Amount		Capital			Income, Net			Earnings		Shares			Amount			Interests			Total
	(in thousands)
Balance at December 31, 2023		65,472	$	6,547	$	863,963		$	35,006		$	2,691,665		(6,843	)	$	(411,750	)	$	1,246		$	3,186,677
Stock option exercises		—		—		319			—			—		19			1,190			—			1,509
Issuance of stock for equity awards, net of forfeitures		—		—		(11,540	)		—			—		190			11,540			—			—
Tax withholdings on equity award vesting		—		—		—			—			—		(66	)		(5,284	)		—			(5,284	)
Amortization of share-based compensation		—		—		6,408			—			—		—			—			—			6,408
Treasury stock purchases		—		—		—			—			—		(499	)		(41,787	)		—			(41,787	)
Excise taxes on treasury stock purchases		—		—		—			—			—		—			(302	)		—			(302	)
Total comprehensive income, net of taxes		—		—		—			(395	)		70,068		—			—			(153	)		69,520
Balance at March 31, 2024		65,472	$	6,547	$	859,150		$	34,611		$	2,761,733		(7,199	)	$	(446,393	)	$	1,093		$	3,216,741

See accompanying notes to condensed financial statements.

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES

NOTES TO CONDENSED FINANCIAL STATEMENTS
(Unaudited)

(1) Basis for Preparation of the Condensed Financial Statements

The condensed financial statements included herein have been prepared by Kirby Corporation and its consolidated subsidiaries (“Kirby” or the “Company”), without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Although the Company believes that the disclosures are adequate to make the information presented not misleading, certain information and footnote disclosures, including significant accounting policies normally included in annual financial statements, have been condensed or omitted pursuant to such rules and regulations. It is suggested that these condensed financial statements be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. Certain reclassifications have been made to reflect the current presentation of financial information.

(2) Acquisitions

On March 27, 2025, the Company purchased 14 inland tank barges with a total capacity of 364,000 barrels, including four specialty barges, and four high horsepower towboats from an undisclosed seller for $97.3 million in cash. The 14 tank barges, including four specialty barges, transport petrochemicals and refined products on the Mississippi River System and Gulf Intracoastal Waterway. The average age of the 14 barges was 16 years.

On December 31, 2024, the Company purchased an inland tank barge from a leasing company for $2.7 million in cash. The Company had been leasing the barge prior to purchase.

On December 30, 2024, the Company purchased three inland tank barges from an undisclosed seller for $9.9 million in cash.

On May 15, 2024, the Company completed the purchase of 13 inland tank barges, with a total capacity of 347,000 barrels, and two high horsepower towboats from an undisclosed seller for $65.2 million in cash. The 13 tank barges, including three specialty barges, transport petrochemicals and refined products on the Mississippi River System and Gulf Intracoastal Waterway. The average age of the 13 barges was 15 years.

(3) Revenues

The following table sets forth the Company’s revenues by major source (in thousands):


	Three Months Ended March 31,
	2025		2024
Marine transportation segment:
Inland transportation	$	392,499	$	386,007
Coastal transportation		83,650		89,405
	$	476,149	$	475,412
Distribution and services segment:
Commercial and industrial	$	160,228	$	142,624
Power generation		104,502		135,669
Oil and gas		44,780		54,317
	$	309,510	$	332,610

Contract liabilities represent advance consideration received from customers, and are recognized as revenue over time or at a point in time as the related performance obligation is satisfied. Revenues recognized during the three months ended March 31, 2025 and 2024 that were included in the opening contract liability balances were $60.2 million and $54.4 million, respectively. The Company presents all contract liabilities within the deferred revenues financial statement caption on the balance sheets. The Company did not have any contract assets as of March 31, 2025 or December 31, 2024.

(4) Segment Data

The Company’s operations are aggregated into two reportable business segments as follows:

Marine Transportation Segment (“KMT”) — Provides marine transportation by United States flagged vessels principally of liquid cargoes throughout the United States inland waterway system, along all three United States coasts, and to a lesser extent, in United States coastal transportation of dry-bulk cargoes. The principal products transported include petrochemicals, black oil, refined petroleum products and agricultural chemicals.

Distribution and Services Segment (“KDS”) — Provides after-market services and genuine replacement parts for engines, transmissions, reduction gears, electric motors, drives, and controls, specialized electrical distribution and control systems, and related equipment used in oilfield services, marine, power generation, on-highway, and other industrial applications. The Company also rents equipment including generators, industrial compressors, high-capacity lift trucks, construction equipment and refrigeration trailers for use in a variety of industrial markets. The Company also manufactures and remanufactures specialized equipment, including pressure pumping units, electric power generation equipment, and specialized electrical distribution and control equipment for oilfield service, railroad and other industrial customers.

The Company’s two reportable business segments are managed separately by the Company’s chief operating decision maker (“CODM”), its Chief Executive Officer, based on fundamental differences in their operations. The Company’s accounting policies for the business segments are the same as those described in Note 1, Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements in the Company’s 2024 Annual Report on Form 10-K. The CODM evaluates the performance of the Company’s segments based on the contributions to operating income of the respective segments, and before income taxes, interest, gains or losses on disposition of assets, other nonoperating income, noncontrolling interests, accounting changes, and nonrecurring items. The CODM uses segment operating income to allocate resources for each segment during the annual budget and forecasting process. The CODM considers budget-to-actual variances on a monthly basis for segment operating income when making decisions about allocating capital and personnel to the segments. The CODM also uses segment operating income to assess the performance for each segment by comparing the results and return on invested capital of each segment. Intersegment revenues, based on market-based pricing, of KDS from KMT of $11.1 million for the three months ended March 31, 2025 and $6.6 million for the three months ended March 31, 2024, as well as the related intersegment profit of $1.1 million for the three months ended March 31, 2025 and $0.7 million for the three months ended March 31, 2024, have been eliminated from the tables below.

The following tables set forth the Company’s revenues, depreciation and amortization, and income or loss by reportable segment and total assets (in thousands):


	Three Months Ended March 31,
	2025							2024
	KMT		KDS		Total			KMT		KDS		Total

Revenue from external customers	$	476,149	$	309,510	$	785,659		$	475,412	$	332,610	$	808,022

Less:
Costs of sales and operating expenses		290,987		222,228		513,215			301,262		249,403		550,665
Administrative payroll expense		21,230		24,936		46,166			21,533		23,653		45,186
Taxes, other than on income		6,452		2,353		8,805			6,197		1,828		8,025
Depreciation and amortization		51,672		10,319		61,991			47,849		7,844		55,693
Other segment items (a)		19,224		27,083		46,307			15,588		27,868		43,456
Segment operating income	$	86,584	$	22,591	$	109,175		$	82,983	$	22,014	$	104,997

Reconciliation of segment operating income
Unallocated amounts:
General corporate expenses						(3,699	)						(3,548	)
Gain on disposition of assets						70							74
Operating income					$	105,546						$	101,523
Other income						5,334							3,269
Interest expense						(10,537	)						(13,151	)
Earnings before taxes on income					$	100,343						$	91,641

(a)

Other segment items for each reportable segment includes:

KMT – selling expense, professional service expense, occupancy expense, and certain overhead expenses.

KDS – inventory-related expense, warranty expense, selling expense, professional service expense, occupancy expense, and certain overhead expenses.


	March 31, 2025		December 31, 2024
Total assets:
Marine transportation	$	4,705,549	$	4,578,616
Distribution and services		1,171,285		1,115,781
Other		137,767		157,555
	$	6,014,601	$	5,851,952

The following table presents the details of “Other” total assets (in thousands):


	March 31, 2025		December 31, 2024
General corporate assets	$	134,566	$	154,655
Investment in affiliates		3,201		2,900
	$	137,767	$	157,555

(5) Long-Term Debt

The following table presents the carrying value and fair value (determined using inputs characteristic of a Level 2 fair value measurement) of debt outstanding (in thousands):


	March 31, 2025					December 31, 2024
	Carrying Value			Fair Value		Carrying Value			Fair Value
Revolving Credit Facility due July 29, 2027 (a)	$	225,000		$	225,000	$	—		$	—
Term Loan due July 29, 2027 (a)		70,000			70,000		70,000			70,000
4.2% senior notes due March 1, 2028		500,000			492,833		500,000			491,923
3.46% senior notes due January 19, 2033		60,000			53,409		60,000			52,956
3.51% senior notes due January 19, 2033		240,000			214,417		240,000			212,650
Credit line due June 30, 2026		—			—		—			—
Bank notes payable		7,337			7,337		8,226			8,226
		1,102,337			1,062,996		878,226			835,755
Unamortized debt discounts and issuance costs		(3,968	)		—		(3,278	)		—
	$	1,098,369		$	1,062,996	$	874,948		$	835,755

(a)

Variable interest rate of 5.6% at March 31, 2025 and December 31, 2024.

On July 29, 2022, the Company entered into a credit agreement (the “2027 Credit Agreement”) with a group of commercial banks, with JPMorgan Chase Bank, N.A. as the administrative agent bank that allows for a $500 million unsecured revolving credit facility (the “2027 Revolving Credit Facility”) and a $250 million unsecured term loan (the “2027 Term Loan”) with a maturity date of July 29, 2027. In the fourth quarter of 2022, the Company repaid $80 million under the 2027 Term Loan prior to scheduled maturities. In the fourth quarter of 2024, the Company repaid $100 million under the 2027 Term Loan prior to scheduled maturities. As a result, no repayments are required until March 31, 2027. Future repayments under the 2027 Term Loan are excluded from short term liabilities because the Company intends to use availability under the 2027 Revolving Credit Facility to repay these amounts upon maturity. Outstanding letters of credit under the 2027 Revolving Credit Facility were $6,000 and available borrowing capacity was $275.0 million as of March 31, 2025.

On February 3, 2022, the Company entered into a note purchase agreement for the issuance of $300 million of unsecured senior notes with a group of institutional investors, consisting of $60 million of 3.46% series A notes (“Series A Notes”) and $240 million of 3.51% series B notes (“Series B Notes”), each due January 19, 2033 (collectively, the “2033 Notes”). The Series A Notes were issued on October 20, 2022, and the Series B Notes were issued on January 19, 2023. No principal payments will be required until maturity.

The Company has a $15 million line of credit (“Credit Line”) with Bank of America, N.A. (“Bank of America”) for short-term liquidity needs and letters of credit, with a maturity date of June 30, 2026. Outstanding letters of credit under the Credit Line were $6.8 million and available borrowing capacity was $8.2 million as of March 31, 2025.

(6) Leases

The Company currently leases various facilities and equipment under cancelable and noncancelable operating leases. The accounting for the Company’s leases may require judgments, which include determining whether a contract contains a lease, allocating the consideration between lease and non-lease components, and determining the incremental borrowing rates. Leases with an initial noncancelable term of 12 months or less are not recorded on the balance sheet and related lease expense is recognized on a straight-line basis over the lease term. The Company has also elected to combine lease and non-lease components on all classes of leased assets, except for leased towing vessels, for which the Company estimates approximately 70% of the costs relate to service costs and other non-lease components. Variable lease costs relate primarily to real estate executory costs (i.e. taxes, insurance and maintenance).

Future minimum lease payments under operating leases that have initial noncancelable lease terms in excess of one year were as follows (in thousands):


	March 31, 2025			December 31, 2024
2025	$	32,360		$	42,202
2026		39,140			38,115
2027		31,246			30,263
2028		23,865			22,860
2029		13,482			12,483
Thereafter		78,772			76,621
Total lease payments		218,865			222,544
Less: imputed interest		(37,198	)		(38,647	)
Operating lease liabilities	$	181,667		$	183,897

The following table summarizes lease costs (in thousands):


	Three Months Ended March 31,
	2025			2024
Operating lease cost	$	11,985		$	11,599
Variable lease cost		(15	)		578
Short-term lease cost		10,675			8,809
Sublease income		(860	)		(830	)
	$	21,785		$	20,156

The following table summarizes other supplemental information about the Company’s operating leases:


	March 31, 2025			December 31, 2024
Weighted average discount rate		4.6	%		4.6	%
Weighted average remaining lease term	8 years			8 years

(7) Stock Award Plans

The compensation cost that has been charged against earnings for the Company’s stock award plans and the income tax benefit recognized in the statement of earnings for stock awards were as follows (in thousands):


	Three Months Ended March 31,
	2025		2024
Compensation cost	$	7,847	$	6,408
Income tax benefit	$	1,883	$	1,519

During the three months ended March 31, 2025, the Company granted 131,170 restricted stock units (“RSUs”) to selected officers and other key employees under the employee stock award plan that vest ratably over five years. During May 2025, the Company granted 15,384 shares of restricted stock to nonemployee directors of the Company under the director stock plan which vest six months after the date of grant.

(8) Taxes on Income

Earnings (loss) before taxes on income and details of the provision for taxes on income were as follows (in thousands):


	Three Months Ended March 31,
	2025			2024
Earnings (loss) before taxes on income:
United States	$	100,574		$	91,654
Foreign		(231	)		(13	)
	$	100,343		$	91,641
Provision for taxes on income:
Federal:
Current	$	18,166		$	10,619
Deferred		1,545			8,082
State and local:
Current		3,337			1,622
Deferred		1,025			1,329
Foreign - current		—			74
	$	24,073		$	21,726

(9) Earnings Per Share

The following table presents the components of basic and diluted earnings per share (in thousands, except per share amounts):


	Three Months Ended March 31,
	2025		2024
Net earnings attributable to Kirby	$	75,986	$	70,068
Undistributed earnings allocated to restricted shares		—		(1	)
Earnings available to Kirby common stockholders – basic		75,986		70,067
Undistributed earnings allocated to restricted shares		—		1
Undistributed earnings reallocated to restricted shares		—		(1	)
Earnings available to Kirby common stockholders – diluted	$	75,986	$	70,067

Shares outstanding:
Weighted average common stock issued and outstanding		56,949		58,473
Weighted average unvested restricted stock		—		(1	)
Weighted average common stock outstanding – basic		56,949		58,472
Dilutive effect of stock options and restricted stock units		367		347
Weighted average common stock outstanding – diluted		57,316		58,819

Net earnings per share attributable to Kirby common stockholders:
Basic	$	1.33	$	1.20
Diluted	$	1.33	$	1.19

Certain outstanding options to purchase approximately 23,000 shares of common stock were excluded in the computation of diluted earnings per share as of March 31, 2024, as such stock options would have been antidilutive. There were no antidilutive stock options as of March 31, 2025. There were no antidilutive RSUs as of March 31, 2025 and 2024.

(10) Inventories

The following table presents the details of inventories – net (in thousands):


	March 31, 2025		December 31, 2024
Finished goods	$	353,415	$	328,540
Work in process		81,291		65,358
	$	434,706	$	393,898

(11) Retirement Plans

The Company sponsors a defined benefit plan for certain of its inland vessel personnel and shore based tankermen. The plan benefits are based on an employee’s years of service and compensation. The plan assets consist primarily of equity and fixed income securities.

On April 12, 2017, the Company amended its pension plan to cease all benefit accruals for periods after May 31, 2017 for certain participants. Participants grandfathered and not impacted were those, as of the close of business on May 31, 2017, who either (a) had completed 15 years of pension service or (b) had attained age 50 and completed 10 years of pension service. Participants non-grandfathered are eligible to receive discretionary 401(k) plan contributions.

The Company’s pension plan funding strategy is to make annual contributions in amounts equal to or greater than amounts necessary to meet minimum government funding requirements. The plan’s benefit obligations are based on a variety of demographic and economic assumptions, and the pension plan assets’ returns are subject to various risks, including market and interest rate risk, making an accurate prediction of the pension plan contribution difficult. Based on current pension plan assets and market conditions, the Company does not expect to make a contribution to the Kirby pension plan during 2025.

On February 14, 2018, with the acquisition of Higman Marine, Inc. and its affiliated companies (“Higman”), the Company assumed Higman’s pension plan for its inland vessel personnel and office staff. On March 27, 2018, the Company amended the Higman pension plan to close it to all new entrants and cease all benefit accruals for periods after May 15, 2018 for all participants. The Company made contributions of $0.3 million to the Higman pension plan during the three months ended March 31, 2025. The Company expects to make additional contributions of $0.9 million during the remainder of 2025.

The Company sponsors an unfunded defined benefit health care plan that provides limited postretirement medical benefits to employees who meet minimum age and service requirements, and to eligible dependents. The plan is contributory, with retiree contributions adjusted annually. The plan eliminated coverage for future retirees as of December 31, 2011. The Company also has an unfunded defined benefit supplemental executive retirement plan (“SERP”) that was assumed in an acquisition in 1999. That plan ceased to accrue additional benefits effective January 1, 2000.

The components of net periodic benefit cost for the Company’s defined benefit plans were as follows (in thousands):


	Pension Benefits
	Pension Plans						SERP
	Three Months Ended March 31,						Three Months Ended March 31,
	2025			2024			2025		2024
Components of net periodic benefit cost:
Service cost	$	605		$	874		$	—	$	—
Interest cost		4,487			4,320			10		10
Expected return on plan assets		(6,809	)		(6,219	)		—		—
Amortization of actuarial (gain) loss		(2,434	)		(473	)		7		8
Net periodic benefit cost	$	(4,151	)	$	(1,498	)	$	17	$	18

The components of net periodic benefit cost for the Company’s postretirement benefit plan were as follows (in thousands):


	Other Postretirement Benefits
	Postretirement Welfare Plan
	Three Months Ended March 31,
	2025			2024
Components of net periodic benefit cost:
Interest cost	$	5		$	5
Amortization of actuarial gain		(65	)		(70	)
Net periodic benefit cost	$	(60	)	$	(65	)

(12) Other Comprehensive Income

The Company’s changes in other comprehensive loss were as follows (in thousands):


	Three Months Ended March 31,
	2025								2024
	Gross Amount			Income Tax Benefit		Net Amount			Gross Amount			Income Tax Benefit		Net Amount
Pension and postretirement benefits (a):
Amortization of net actuarial gain	$	(2,492	)	$	625	$	(1,867	)	$	(535	)	$	140	$	(395	)
Foreign currency translation		308			—		308			—			—		—
Total	$	(2,184	)	$	625	$	(1,559	)	$	(535	)	$	140	$	(395	)

(a) Actuarial gains (losses) are amortized into other income (expense). (See Note 11, Retirement Plans)

(13) Contingencies and Commitments

On October 13, 2016, the tug Nathan E. Stewart and barge DBL 55, an articulated tank barge and tugboat unit (“ATB”) owned and operated by Kirby Offshore Marine, LLC, a wholly owned subsidiary of the Company, ran aground at the entrance to Seaforth Channel on Atholone Island, British Columbia. The grounding resulted in a breach of a portion of the Nathan E. Stewart’s fuel tanks causing a discharge of diesel fuel into the water. The United States Coast Guard and the National Transportation Safety Board designated the Company as a party of interest in their investigation as to the cause of the incident. The Canadian authorities including Transport Canada and the Canadian Transportation Safety Board investigated the cause of the incident. On October 10, 2018, the Heiltsuk First Nation filed a civil action in the British Columbia Supreme Court against a subsidiary of the Company, the master and pilot of the tug, the vessels and the Canadian government seeking unquantified damages as a result of the incident. On May 1, 2019, the Company filed a limitation action in the Federal Court of Canada seeking limitation of liability relating to the incident as provided under admiralty law. The Heiltsuk First Nation’s civil claim has been consolidated into the Federal Court limitation action as of July 26, 2019 and it is expected that the Federal Court of Canada will decide all claims against the Company. The Company is unable to estimate the potential exposure in the civil proceeding. The Company has various insurance policies covering liabilities including pollution, property, marine and general liability and believes that it has satisfactory insurance coverage for the cost of cleanup and salvage operations as well as other potential liabilities arising from the incident. The Company believes its accrual of such estimated liability is adequate for the incident and does not expect the incident to have a material adverse effect on its business or financial condition.

In addition, the Company is involved in various legal and other proceedings which are incidental to the conduct of its business, none of which in the opinion of management will have a material effect on the Company’s financial condition, results of operations, or cash flows. Management believes its accrual of such estimated liability is adequate and believes that it has adequate insurance coverage or has meritorious defenses for these other claims and contingencies.

The Company has issued guaranties or obtained standby letters of credit and performance bonds supporting performance by the Company and its subsidiaries of contractual or contingent legal obligations of the Company and its subsidiaries incurred in the ordinary course of business. The aggregate notional value of these instruments is $32.8 million at March 31, 2025, including $11.6 million in letters of credit and $21.1 million in performance bonds. All of these instruments have an expiration date within two years. The Company does not believe demand for payment under these instruments is likely and expects no material cash outlays to occur regarding these instruments.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Statements contained in this Form 10-Q that are not historical facts, including, but not limited to, any projections contained herein, are forward-looking statements and involve a number of risks and uncertainties. Such statements involve risks and uncertainties. Such statements can be identified by the use of forward-looking terminology such as “may,” “will,” “expect,” “anticipate,” “estimate,” or “continue,” or the negative thereof or other variations thereon or comparable terminology. The actual results of the future events described in such forward-looking statements in this Form 10-Q could differ materially from those stated in such forward-looking statements. Among the factors that could cause actual results to differ materially are: adverse economic conditions, industry competition and other competitive factors, adverse weather conditions such as high water, low water, tropical storms, hurricanes, tsunamis, fog and ice, tornados, COVID-19 or other pandemics, marine accidents, lock delays or closures, fuel costs, interest rates, construction of new equipment by competitors, government and environmental laws and regulations, and the timing, magnitude and number of acquisitions made by the Company. For a more detailed discussion of factors that could cause actual results to differ from those presented in forward-looking statements, see Item 1A-Risk Factors found in the Company’s Annual Report on Form 10‑K for the year ended December 31, 2024. Forward-looking statements are based on currently available information and the Company assumes no obligation to update any such statements. For purposes of Management’s Discussion, all net earnings per share attributable to Kirby common stockholders are “diluted earnings per share.”

Overview

The Company is the nation’s largest domestic tank barge operator transporting bulk liquid products throughout the Mississippi River System, on the Gulf Intracoastal Waterway, and coastwise along all three United States coasts. The Company transports petrochemicals, black oil, refined petroleum products and agricultural chemicals by tank barge. In addition, the Company participates in the transportation of dry-bulk commodities in United States coastwise trade. Through KDS, the Company provides after-market services and genuine replacement parts for engines, transmissions, reduction gears, electric motors, drives, and controls, specialized electrical distribution and control systems, and related equipment used in oilfield services, marine, power generation, on-highway, and other industrial applications. The Company also rents equipment including generators, industrial compressors, high-capacity lift trucks, construction equipment and refrigeration trailers for use in a variety of industrial markets. The Company also manufactures and remanufactures specialized equipment, including pressure pumping units, electric power generation equipment, and specialized electrical distribution and control equipment for oilfield service, railroad and other industrial customers.

The following table summarizes key operating results of the Company (in thousands, except per share amounts):


	Three Months Ended March 31,
	2025		2024
Total revenues	$	785,659	$	808,022
Net earnings attributable to Kirby	$	75,986	$	70,068
Net earnings per share attributable to Kirby common stockholders – diluted	$	1.33	$	1.19
Net cash provided by operating activities	$	36,541	$	123,288
Capital expenditures	$	78,687	$	81,047

Cash provided by operating activities for the 2025 first quarter decreased in comparison to the 2024 first quarter primarily due to unfavorable working capital changes. This was related to an increase in inventories in the first quarter of 2025 due to the impact of supply delays in KDS resulting in the buildup of inventory for projects, mainly due to power generation orders, that are scheduled to be delivered later in 2025, partially offset by increased net earnings. For the 2025 first quarter, capital expenditures of $78.7 million included $61.8 million in KMT and $16.9 million in KDS and corporate, each more fully described under Cash Flow and Capital Expenditures below.

The Company projects that capital expenditures for 2025 will be in the $280 million to $320 million range. Approximately $180 million to $220 million is associated with marine maintenance capital and improvements to existing inland and coastal marine equipment, and facility improvements. Approximately $100 million is associated with growth capital spending in both segments.

The Company’s debt-to-capitalization ratio increased to 24.8% at March 31, 2025 compared to 20.7% at December 31, 2024, primarily due to an increase in debt outstanding. Total equity at March 31, 2025 decreased as compared to December 31, 2024 primarily from treasury stock purchases of $101.5 million, partially offset by net earnings attributable to Kirby of $76.0 million. The Company’s debt outstanding as of March 31, 2025 and December 31, 2024 is detailed in Long-Term Financing below.

Marine Transportation

For the 2025 first quarter, KMT generated 61% of the Company’s revenues compared to 59% for the 2024 first quarter. The segment’s customers include many of the major petrochemical and refining companies that operate in the United States. Products transported include intermediate materials used to produce many of the end products used widely by businesses and consumers — plastics, fiber, paints, detergents, oil additives and paper, among others, as well as residual fuel oil, ship bunkers, asphalt, gasoline, diesel fuel, heating oil, crude oil, natural gas condensate, and agricultural chemicals. Consequently, KMT is directly affected by the volumes produced by the Company’s petroleum, petrochemical, and refining customer base.

The following table summarizes the Company’s marine transportation fleet:


	March 31,
	2025		2024
Inland tank barges:
Owned		1,074		1,044
Leased		37		34
Total		1,111		1,078
Barrel capacity (in millions)		24.6		23.8

Active inland towboats (quarter average):
Owned		215		214
Chartered		76		72
Total		291		286

Coastal tank barges:
Owned		28		28
Leased		-		-
Total		28		28
Barrel capacity (in millions)		2.9		2.9

Coastal tugboats:
Owned		23		24
Chartered		1		1
Total		24		25

Offshore dry-bulk cargo barges (owned)

KIRBY CORP 10-Q