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Equity-Based Compensation Plans
 3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Equity-Based Compensation Plans Equity-Based Compensation Plans
We have granted stock options at exercise prices equal to the fair market value of our Class A common stock on the grant date as well as granted both stock options and restricted stock awards (RSUs) vesting solely upon the continued service of the recipient. Performance-based awards (PSUs) vest based on our relative total stockholder return (TSR) as compared to an index of public internet companies.
The following table summarizes stock option activity:
Number of
Shares of Class A Common Stock (#)		Weighted-
Average
Exercise
Price Per Share ($)
Outstanding at December 31, 2023
845 49.60 
Exercised(80)26.52 
Forfeited— 18.00 
Outstanding at March 31, 2024
765 52.03 
Vested at March 31, 2024
764 52.01 
The following table summarizes stock award activity:
Number of
Shares of Class A Common Stock (#)
Outstanding at December 31, 20236,257 
Granted: RSUs2,472 
Granted: TSR-based PSUs212 
TSR-based PSU achievement above target230 
Vested(1,542)
Forfeited(221)
Outstanding at March 31, 2024(1)
7,408 
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(1)The balance of outstanding awards is comprised of the following:
Number of
Shares of Class A Common Stock (#)		Weighted-Average Grant-Date Fair Value Per Share ($)
RSUs6,757 91.62
TSR-based PSUs651 142.30
Outstanding at March 31, 20247,408 
As of March 31, 2024, total unrecognized compensation expense related to non-vested equity grants was $552.9 million with an expected remaining weighted-average recognition period of 2.3 years.