Stock-Based Incentive Plans

9 Months Ended

Sep. 30, 2021

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

14. STOCK-BASED INCENTIVE PLANS

We are externally managed by our Manager and do not currently have any employees. However, as of September 30, 2021, 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.

We had stock-based incentive awards outstanding under nine benefit plans as of September 30, 2021. Seven of such benefit plans have expired and no new awards may be issued under them. Under our two current benefit plans, a maximum of 5,000,000 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 September 30, 2021, there were 1,978,860 shares available under our current benefit plans.

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		263,809			26.16
Vested		(718,799	)		33.08
Forfeited		(29,580	)		31.52

Balance as of September 30, 2021		1,143,320		$	31.60

These shares generally vest in installments over a three-year period, pursuant to the terms of the respective award agreements and the terms of our current benefit plans. The 1,143,320 shares of restricted class A common stock outstanding as of September 30, 2021 will vest as follows: 239,145 shares will vest in 2021; 626,395 shares will vest in 2022; and 277,780 shares will vest in 2023. As of September 30, 2021, total unrecognized compensation cost relating to unvested share-based compensation arrangements was $33.6 million based on the grant date fair value of shares granted. This cost is expected to be recognized over a weighted-average period of 1.0 years from September 30, 2021.