Mustang Bio, 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
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Stockholders' Equity (Restricted Stock or Restricted Units Awards) (Details)

v3.25.1

Stockholders' Equity (Restricted Stock or Restricted Units Awards) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Restricted stock award
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance	1,285	675
Granted		720
Vested	(90)	(110)
Nonvested, Number, Ending Balance	1,195	1,285
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance	$ 577.5	$ 1,107.83
Granted		345
Vested	2,722.5	2,310
Nonvested, Ending Balance	$ 415.95	$ 577.5
Unrecognized share-based compensation	$ 200,000
Unrecognized compensation recognition period	1 year 1 month 6 days
Restricted stock units
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance	1,911	3,303
Granted		577
Forfeited	(1,320)	(1,027)
Vested	(365)	(942)
Nonvested, Number, Ending Balance	226	1,911
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance	$ 948.25	$ 1,391.48
Granted		256.51
Forfeited	911.7	1,374.25
Vested	1,205.2	1,614.25
Nonvested, Ending Balance	$ 746.7	$ 948.25
Unrecognized share-based compensation	$ 25,000
Unrecognized compensation recognition period	1 year 6 months

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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