Stock-Based Incentive Plans

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

STOCK-BASED INCENTIVE PLANS

We are externally managed by our Manager and do not currently have any employees. However, as of December 31, 2022, our Manager, certain individuals employed by an affiliate of our Manager, and certain members of our board of directors were compensated, in part, through our issuance of stock-based instruments.

Under our two current stock incentive plans, a maximum of 10,400,000 shares of our class A common stock may be issued to our Manager, our directors and officers, and certain employees of affiliates of our Manager. As of December 31, 2022, there were 9,210,865 shares available under our current stock incentive plans. Prior to the adoption and shareholder approval of our new stock incentive plans, we had stock-based incentive awards outstanding under nine stock incentive plans. In connection with the adoption of our new stock incentive plans, we consolidated all outstanding DSUs under the new plans and retired the seven remaining historical plans. As such, no new awards may be issued under these expired plans, although our 2018 plans will continue to govern outstanding awards, other than DSUs, previously issued thereunder until such awards become vested or expire.

The following table details the movement in our outstanding shares of restricted class A common stock and the weighted-average grant date fair value per share:


	Restricted Class A Common Stock	Weighted-Average Grant Date Fair Value Per Share
Balance as of December 31, 2020	1,627,890	$	33.14
Granted	1,065,755	29.93
Vested	(957,944)	33.08
Forfeited	(29,580)	31.52
Balance as of December 31, 2021	1,706,121	$	31.19
Granted	1,244,131	26.92
Vested	(1,026,813)	32.06
Forfeited	(39,655)	30.76
Balance as of December 31, 2022	1,883,784	$	27.90

These shares generally vest in installments over a period of three years, pursuant to the terms of the respective award agreements and the terms of our current benefit plans. The 1,883,784 shares of restricted class A common stock outstanding as of December 31, 2022 will vest as follows: 948,494 shares will vest in 2023; 667,525 shares will vest in 2024; and 267,765 will vest in 2025. As of December 31, 2022, total unrecognized compensation cost relating to unvested share-based compensation arrangements was $50.7 million based on the grant date fair value of shares granted. This cost is expected to be recognized over a weighted-average period of 1.2 years from December 31, 2022.