Mustang Bio, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

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)

v3.23.3

Stockholders Equity (Restricted Stock or Restricted Units Awards) (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Restricted Stock Awards [Member]
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance \| shares	34,016
Granted \| shares	36,230
Vested \| shares	(5,540)
Nonvested, Number, Ending Balance \| shares	64,706
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance \| $ / shares	$ 22.20
Granted \| $ / shares	6.90
Vested \| $ / shares	46.20
Nonvested, Ending Balance \| $ / shares	$ 11.59
Unrecognized share-based compensation \| $	$ 400
Weighted average vesting period (in years)	2 years 4 months 24 days
Restricted Stock Units [Member]
Restricted stock and RSU rollforward
Nonvested, Number, Beginning Balance \| shares	165,912
Granted \| shares	29,732
Forfeited \| shares	(46,172)
Vested \| shares	(43,372)
Nonvested, Number, Ending Balance \| shares	106,100
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance \| $ / shares	$ 27.60
Granted \| $ / shares	5.13
Forfeited \| $ / shares	27.93
Vested \| $ / shares	32.82
Nonvested, Ending Balance \| $ / shares	$ 19.03
Unrecognized share-based compensation \| $	$ 700
Weighted average vesting period (in years)	2 years 4 months 24 days

- Definition

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

+ References

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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

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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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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.

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

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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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