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Equity-Based Compensation Plans
 9 Months Ended
Sep. 30, 2023
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. We have granted both stock options and restricted stock awards (RSUs) vesting solely upon the continued service of the recipient as well as performance-based awards (PSUs) with vesting based on either (i) our achievement of financial targets or (ii) 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 ($)
Outstanding at December 31, 2022
1,426 44.38 
Exercised(306)31.28 
Forfeited(17)70.64 
Outstanding at September 30, 2023
1,103 47.64 
Vested at September 30, 2023
1,097 47.49 
The following table summarizes stock award activity:
Number of
Shares of Class A Common Stock (#)
Outstanding at December 31, 20227,632 
Granted: RSUs3,394 
Granted: TSR-based PSUs264 
TSR-based PSU achievement above target91 
Vested(3,287)
Forfeited(796)
Outstanding at September 30, 2023(1)
7,298 
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(1)The balance of outstanding awards is comprised of the following:
Number of
Shares of Class A Common Stock (#)		Weighted-Average Grant-Date Fair Value Per Share ($)
RSUs6,514 78.35
TSR-based PSUs759 119.56
Financial-based PSUs25 77.23 
Outstanding at September 30, 20237,298 
As of September 30, 2023, total unrecognized compensation expense related to non-vested equity grants was $417.3 million with an expected remaining weighted-average recognition period of 2.1 years.