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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Summary of Stock Option Activity
The following table summarizes the stock option activity for the year ended December 31, 2024 (in thousands, except for share data):
Number of Options
Weighted-
Average
Exercise
Price Per
Share
Intrinsic
Value
Weighted-
Average
Remaining
Contractual
Term (in years)
Outstanding, December 31, 20236,296,350$2.49 $79,728 4.83
Exercised(2,383,715)3.97 
Forfeited(4,628)5.63 
Expired(25,653)5.06 
Outstanding, December 31, 20243,882,354$1.55 $77,824 3.21
Exercisable, December 31, 20243,859,793$1.52 $77,493 3.19
Expected to Vest, December 31, 202422,561$6.68 $331 6.63
Summary of Restricted Stock Unit Activity
The following table summarizes the RSU activity for the year ended December 31, 2024 (in thousands, except for share data):
Number of RSUs
Weighted-
Average
Grant-Date
Fair Value
Outstanding, December 31, 20237,237,920$14.37 
Granted5,006,85317.56 
Vested(3,643,816)14.91 
Forfeited(523,395)15.06 
Outstanding, December 31, 20248,077,562$16.04 
Schedule of Fair Value of Options Vested and the Intrinsic Value from the Exercise of Options
The fair value of stock awards vested and the intrinsic value from the exercise of options for the years ended December 31, 2024, 2023 and 2022 are as follows (in thousands):
202420232022
Fair value of awards vested$58,438 $47,736 $32,965 
Intrinsic value of options exercised$33,651 $15,688 $6,355 
Summary of Share-based Compensation Expense
Total stock-based compensation expense recognized for restricted stock units and common stock options has been reported in the Consolidated Statements of Operations as follows (in thousands):
202420232022
Marketplace and service cost of revenue (excluding depreciation & amortization)$1,065 $938 $673 
Operations and technology16,595 10,875 9,342 
Selling, general, and administrative50,350 37,835 29,309 
Stock-based compensation, net of amount capitalized68,010 49,648 39,324 
Capitalized stock-based compensation5,516 3,383 2,013 
Stock-based compensation expense$73,526 $53,031 $41,337