Equity-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Schedule of equity based compensation by type of award

	Three Months Ended March 31,
(in thousands)	2023		2024
Restricted stock units	$	5,061		7,127
Performance share units		1,061		1,951
Equity awards issued to directors		205		249
Total expense	$	6,327		9,327

Summary of RSU awards activity

		Weighted Average
	Number	Grant Date
	of Units	Fair Value
Total AM LTIP RSUs awarded and unvested—December 31, 2023	5,877,170	$	10.28
Granted	2,459,643		13.44
Vested	(1,011,669)		10.59
Forfeited	(3,094)		10.56
Total AM LTIP RSUs awarded and unvested—March 31, 2024	7,322,050	$	11.30

ROIC PSUs

Summary of PSU awards activity

		Weighted Average
	Number	Grant Date
	of Units	Fair Value
Total AM LTIP PSUs awarded and unvested—December 31, 2023	952,101	$	10.90
Granted	350,237		13.44
Total AM LTIP PSUs awarded and unvested—March 31, 2024	1,302,338	$	11.59