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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2022
Stockholders' Equity Note [Abstract]  
Schedule of Stock Option Activity
The following table summarizes stock option activity during the nine months ended September 30, 2022:
SharesWeighted-
Average 
Exercise
Price
Weighted-
Average
Remaining
Contractual
Term
Aggregate
Intrinsic Value
(in thousands)(in years)(in thousands)
Outstanding at December 31, 20214,369 5.075.10$132,721 
Granted— — 
Exercised(1,712)3.11
Cancelled/forfeited(143)12.14
Outstanding at September 30, 2022
2,514 6.015.10$9,912 
Vested and exercisable at September 30, 2022
2,328 5.585.00$9,805 
Schedule of Restricted Stock Units
The following table summarizes RSU activity during the nine months ended September 30, 2022:
Number of SharesWeighted-Average 
Grant Date Fair Value Per Share
(in thousands)
Unvested RSUs as of December 31, 20215,285 $42.80 
Granted11,088 15.00 
Vested(1,918)35.41 
Cancelled/forfeited(1,474)32.54 
Unvested RSUs as of September 30, 2022
12,981 $21.32 
The following table summarizes the activity related to the revest shares during the nine months ended September 30, 2022:
Number of SharesWeighted-Average Grant Date Fair Value Per Share
(in thousands)
Unvested revest shares as of December 31, 2021336 $97.84 
Granted— — 
Modification of shares subject to revest(224)97.84
Vested(112)97.84
Cancelled/forfeited— — 
Unvested revest shares as of September 30, 2022
— $— 
Schedule of Stock-Based Compensation Expense
The following table summarizes the components of total stock-based compensation expense included in the accompanying Condensed Consolidated Statements of Operations:
Three months ended September 30,Nine months ended September 30,
2022202120222021
(in thousands)
Cost of revenue$2,978 $1,897 $9,112 $4,911 
Research and development14,488 14,752 46,966 31,344 
Sales and marketing10,920 9,121 31,198 19,760 
General and administrative10,992 10,866 27,102 44,885 
Total stock-based compensation expense$39,378 $36,636 $114,378 $100,900