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Stock Awards
9 Months Ended
Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Stock Awards

7. Stock Awards

During the second quarter of 2022, we amended the 2019 Equity Incentive Plan (the “Equity Incentive Plan”), which authorizes the issuance of common stock options, restricted stock, restricted stock units, deferred stock units, stock appreciation rights, performance units, and other stock-based awards. The Equity Incentive Plan is administered by the Compensation Committee of the Board of Directors. Among other things, the recent amendment increased the number of shares of common stock registered and reserved for stock awards by 16 million to 28.9 million. As of September 30, 2022, 19.3 million shares remain available for future stock awards. Share-based compensation expense totaled $33.0 million and $38.6 million for the nine months ended September 30, 2022 and 2021, respectively.