Fortress Biotech, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Subsequent Events (Details)

v3.26.1

Subsequent Events (Details) $ / shares in Units, $ in Thousands				1 Months Ended	12 Months Ended
	Mar. 30, 2026 USD ($)	Feb. 22, 2026 USD ($) $ / shares	Jan. 13, 2026 USD ($)	Feb. 28, 2026 USD ($) $ / shares	Dec. 31, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($) $ / shares	Feb. 10, 2026 USD ($) ft²	Jul. 25, 2024 USD ($)
Subsequent Events
Preferred Stock, liquidation preference per share \| $ / shares					$ 25	$ 25
Repayment of Oaktree Note and debt issuance costs					$ (5,561)	$ (51,000)
Oaktree Note
Subsequent Events
Outstanding amount					$ 29,789	$ 35,350		$ 50,000
Second Oaktree Amendment \| Reduction in debt covenants
Subsequent Events
Minimum liquidity amount		$ 2,000
Subsequent events
Subsequent Events
Area of land \| ft²							23,000
Base rent receivable							$ 11,800
Subsequent events \| Oaktree Note
Subsequent Events
Repayment of Oaktree Note and debt issuance costs	$ 15,000
Subsequent events \| Second Oaktree Amendment \| Reduction in debt covenants
Subsequent Events
Outstanding amount		15,000
Subsequent events \| Second Oaktree Amendment \| Maximum \| Reduction in debt covenants
Subsequent Events
Outstanding amount		15,000
Subsequent events \| Second Oaktree Amendment \| Maximum \| Debt covenant no longer apply
Subsequent Events
Outstanding amount		10,000
Subsequent events \| Cyprium
Subsequent Events
Consideration received		$ 205,000	$ 205,000	$ 205,000
Preferred Stock, liquidation preference per share \| $ / shares		$ 25		$ 25
Subsequent events \| Cyprium \| Eunice Kennedy Shriver National Institute of Child Health and Human Development
Subsequent Events
Percentage of proceeds obligated to pay		20.00%

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