Mirion Technologies, Inc. Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Activity of RSUs, PSUs, and Director RSUs (Details)

v3.22.4

Stock-Based Compensation - Activity of RSUs, PSUs, and Director RSUs (Details) - $ / shares	2 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022
RSUs
Quantity
Awards outstanding, beginning balance (in shares)	0	974,775
Awards granted (in shares)	974,775	1,005,100
Awards vested (in shares)	0	225,186
Awards forfeited (in shares)	0	95,663
Awards outstanding, ending balance (in shares)	974,775	1,659,026
Weighted average grant date fair value
Awards outstanding, beginning balance (in dollars per share)	$ 0	$ 10.48
Awards granted (in dollars per share)	10.48	8.05
Awards vested (in dollars per share)	0	10.48
Awards forfeited (in dollars per share)	0	9.65
Awards outstanding, ending balance (in dollars per share)	$ 10.48	$ 9.05
PSUs
Quantity
Awards outstanding, beginning balance (in shares)	0	229,006
Awards granted (in shares)	229,006	187,356
Awards vested (in shares)	0	0
Awards forfeited (in shares)	0	4,956
Awards outstanding, ending balance (in shares)	229,006	411,406
Weighted average grant date fair value
Awards outstanding, beginning balance (in dollars per share)	$ 0	$ 9.20
Awards granted (in dollars per share)	9.20	9.88
Awards vested (in dollars per share)	0	0
Awards forfeited (in dollars per share)	0	9.88
Awards outstanding, ending balance (in dollars per share)	$ 9.20	$ 9.50
Director RSUs
Quantity
Awards outstanding, beginning balance (in shares)	0	34,902
Awards granted (in shares)	34,902	94,811
Awards vested (in shares)	0	80,779
Awards forfeited (in shares)	0	0
Awards outstanding, ending balance (in shares)	34,902	48,934
Weighted average grant date fair value
Awards outstanding, beginning balance (in dollars per share)	$ 0	$ 10.48
Awards granted (in dollars per share)	10.48	6.65
Awards vested (in dollars per share)	0	8.29
Awards forfeited (in dollars per share)	0	0
Awards outstanding, ending balance (in dollars per share)	$ 10.48	$ 6.68

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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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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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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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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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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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