Gladstone Capital Corporation Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Cover
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

BORROWINGS - Notes Payable Narrative (Details)

v3.25.4

BORROWINGS - Notes Payable Narrative (Details) $ / shares in Units, $ in Thousands			1 Months Ended
	Oct. 15, 2025 USD ($)	Sep. 22, 2025 $ / shares	Oct. 31, 2025 USD ($)	Sep. 30, 2025 USD ($) day $ / shares	Aug. 31, 2023 USD ($)	Nov. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Apr. 30, 2022
Debt Instrument [Line Items]
Aggregate amount									$ 199,500	$ 257,000
Interest payable				$ 3,141					3,820
Convertible Debt \| 2030 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount				$ 149,500
Interest rate				5.875%
Proceeds from convertible debt				$ 142,800
Interest payable				$ 8,800
Conversion rate		0.03861		0.0384394
Conversion price (in dollars per share) \| $ / shares		$ 25.90		$ 26.02
Threshold percentage of stock price trigger				130.00%
Threshold trading days \| day				20
Threshold consecutive trading days \| day				30
Redemption price				100.00%
Convertible debt, fair value									144,800
Convertible Debt \| 2030 Convertible Notes \| Maximum
Debt Instrument [Line Items]
Conversion rate				0.0422834
Notes Payable \| 7.75% Notes due 2028
Debt Instrument [Line Items]
Interest rate					7.75%
Aggregate amount					$ 57,000
Proceeds from issuance of long-term debt					$ 55,100
Loss on extinguishment of debt	$ 1,200
Notes Payable \| 3.75% Notes due 2027
Debt Instrument [Line Items]
Interest rate						3.75%					3.75%
Aggregate amount						$ 50,000
Proceeds from issuance of long-term debt						48,500
Interest payable						$ 1,900
Note payable, fair value									$ 48,300
Notes Payable \| 5.125% Notes due 2026
Debt Instrument [Line Items]
Interest rate								5.125%
Aggregate amount							$ 50,000	$ 100,000
Proceeds from issuance of long-term debt							$ 50,600	$ 97,700
Loss on extinguishment of debt			$ 200
Repurchased face amount			$ 150,000

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