Mustang Bio, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Stockholders' Equity (Stock-based Compensation Expense) (Details)

Stockholders' Equity (Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Stockholders' Equity
Total stock-based compensation expense	$ 2	$ 23	$ 45	$ 106
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Stockholders' Equity
Total stock-based compensation expense	$ 2	22	$ 45	116
Location, Statement of Income, Balance [Axis]: mbio:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCostNet
Stockholders' Equity
Total stock-based compensation expense		$ 1		$ (10)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details