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Equity-Based Compensation Plans | 9 Months Ended
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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 ($)
Outstanding at December 31, 2022 | 1,426 |  |  |  |  | 44.38 |
Exercised | (306) |  |  |  |  | 31.28 |
Forfeited | (17) |  |  |  |  | 70.64 |
Outstanding at September 30, 2023 | 1,103 |  |  |  |  | 47.64 |
Vested at September 30, 2023 | 1,097 |  |  |  |  | 47.49 |
The following table summarizes stock award activity:
| Number of Shares of Class A Common Stock (#)
Outstanding at December 31, 2022 | 7,632 |
Granted: RSUs | 3,394 |
Granted: TSR-based PSUs | 264 |
TSR-based PSU achievement above target | 91 |
Vested | (3,287) |
Forfeited | (796) |
Outstanding at September 30, 2023(1) | 7,298 |
_________________________________ (1)The balance of outstanding awards is comprised of the following:
| Number of Shares of Class A Common Stock (#) |  | Weighted-Average Grant-Date Fair Value Per Share ($)
RSUs | 6,514 |  |  | 78.35
TSR-based PSUs | 759 |  |  | 119.56
Financial-based PSUs | 25 |  |  | 77.23 |
Outstanding at September 30, 2023 | 7,298 |  |  |
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.

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