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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Common Stock—Class A
Common Stock
Common Stock—Class A
Vesting of restricted stock units
Common Stock
Common Stock—Class A
Vesting of restricted stock awards
Common Stock
Common Stock—Class B
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020   103,394     10,229      
Beginning balance at Dec. 31, 2020 $ 1,061,865 $ 1     $ 1 $ 1,350,050 $ 6 $ (288,193)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of vested stock options (in shares)   1,527            
Exercise of vested stock options 9,094         9,094    
Vesting of early exercised stock options (in shares)         43      
Vesting of early exercised stock options 192         192    
Vesting of restricted stock units/awards (in shares)     1,520 336        
Shares issued under ESPP (in shares)   154            
Shares issued under ESPP 5,719         5,719    
Stock-based compensation 104,311         104,311    
Conversion of Class B to Class A Stock (in shares)   10,272     (10,272)      
Conversion of Class B to Class A Stock   $ 1     $ (1)      
Net loss (165,176)             (165,176)
Other comprehensive income (loss) (426)           (426)  
Ending balance (in shares) at Sep. 30, 2021   117,203     0      
Ending balance at Sep. 30, 2021 1,015,579 $ 2     $ 0 1,469,366 (420) (453,369)
Beginning balance (in shares) at Jun. 30, 2021   106,259     9,708      
Beginning balance at Jun. 30, 2021 1,029,090 $ 1     $ 1 1,426,520 (261) (397,171)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of vested stock options (in shares)   498            
Exercise of vested stock options 3,489         3,489    
Vesting of early exercised stock options (in shares)         14      
Vesting of early exercised stock options 64         64    
Vesting of restricted stock units/awards (in shares)     611 112        
Stock-based compensation 39,293         39,293    
Conversion of Class B to Class A Stock (in shares)   9,723     (9,723)      
Conversion of Class B to Class A Stock   $ 1     $ (1)      
Net loss (56,198)             (56,198)
Other comprehensive income (loss) (159)           (159)  
Ending balance (in shares) at Sep. 30, 2021   117,203     0      
Ending balance at Sep. 30, 2021 1,015,579 $ 2     $ 0 1,469,366 (420) (453,369)
Beginning balance (in shares) at Dec. 31, 2021   118,811            
Beginning balance at Dec. 31, 2021 $ 1,013,953 $ 2       1,527,468 (2,627) (510,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of vested stock options (in shares) 1,712 1,712            
Exercise of vested stock options $ 5,324         5,324    
Vesting of restricted stock units/awards (in shares)     1,918 112        
Shares issued under ESPP (in shares)   292            
Shares issued under ESPP 2,962         2,962    
Stock-based compensation 98,912         98,912    
Net loss (144,121)             (144,121)
Other comprehensive income (loss) (10,051)           (10,051)  
Ending balance (in shares) at Sep. 30, 2022   122,845            
Ending balance at Sep. 30, 2022 966,979 $ 2       1,634,666 (12,678) (655,011)
Beginning balance (in shares) at Jun. 30, 2022   121,885            
Beginning balance at Jun. 30, 2022 993,738 $ 2       1,597,869 (12,542) (591,591)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of vested stock options (in shares)   88            
Exercise of vested stock options 555         555    
Vesting of restricted stock units/awards (in shares)     835 37        
Stock-based compensation 36,242         36,242    
Net loss (63,420)             (63,420)
Other comprehensive income (loss) (136)           (136)  
Ending balance (in shares) at Sep. 30, 2022   122,845            
Ending balance at Sep. 30, 2022 $ 966,979 $ 2       $ 1,634,666 $ (12,678) $ (655,011)