v3.25.4

Debt - Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Principal outstanding	$ 3,254,315	$ 3,029,135
Long term debt	3,266,099	3,038,322
Debt Issuance Costs, Net	11,665	9,060
Long-term Debt, Fair Value	3,227,644	2,928,033
Unsecured credit facility:
Debt Instrument [Line Items]
Principal outstanding	262,000	409,000
Long-term Debt, Fair Value	262,000	409,000
Unsecured Term Loans
Debt Instrument [Line Items]
Long term debt	1,025,000	1,025,000
Long-term Debt, Fair Value	1,025,000	1,025,000
Unsecured Notes
Debt Instrument [Line Items]
Long term debt	1,975,000	1,600,000
Long-term Debt, Fair Value	1,937,338	1,490,667
Mortgage Loans Payable
Debt Instrument [Line Items]
Long term debt	4,099	4,322
Unamortized fair market value discount	(119)	(127)
Long-term Debt, Fair Value	$ 3,306	$ 3,366

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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STAG Industrial, Inc. 10-K