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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2020 $ 220,039 $ 4 $ 394,963 $ (174,740) $ (188)
Beginning balance, Shares at Dec. 31, 2020   38,120,606      
Issuance of common stock upon exercise of stock options 309   309    
Issuance of common stock upon exercise of stock options, shares   79,515      
Stock-based compensation 5,965   5,965    
Vesting of early exercised common stock options 126   126    
Other comprehensive loss (63)       (63)
Net loss (57,492)     (57,492)  
Ending balance at Jun. 30, 2021 168,884 $ 4 401,363 (232,232) (251)
Ending balance, Shares at Jun. 30, 2021   38,200,121      
Beginning balance at Mar. 31, 2021 195,220 $ 4 397,857 (202,414) (227)
Beginning balance, Shares at Mar. 31, 2021   38,147,205      
Issuance of common stock upon exercise of stock options 213   213    
Issuance of common stock upon exercise of stock options, shares   52,916      
Stock-based compensation 3,209   3,209    
Vesting of early exercised common stock options 84   84    
Other comprehensive loss (24)       (24)
Net loss (29,818)     (29,818)  
Ending balance at Jun. 30, 2021 168,884 $ 4 401,363 (232,232) (251)
Ending balance, Shares at Jun. 30, 2021   38,200,121      
Beginning balance at Dec. 31, 2021 184,731 $ 4 487,347 (303,072) 452
Beginning balance, Shares at Dec. 31, 2021   42,690,229      
Ending balance at Mar. 31, 2022 152,886 $ 4 491,365 (338,687) 204
Ending balance, Shares at Mar. 31, 2022   42,695,195      
Beginning balance at Dec. 31, 2021 184,731 $ 4 487,347 (303,072) 452
Beginning balance, Shares at Dec. 31, 2021   42,690,229      
Issuance of common stock upon exercise of stock options 11   11    
Issuance of common stock upon exercise of stock options, shares   5,591      
Issuance of common stock related to ESPP purchase, shares   112,468      
Issuance of common stock related to ESPP purchase 111   111    
Stock-based compensation expense related to employee stock awards 7,034   7,034    
Stock-based compensation expense related to employee stock purchases 891   891    
Vesting of early exercised common stock options 144   144    
Other comprehensive loss (402)       (402)
Net loss (55,539)     (55,539)  
Ending balance at Jun. 30, 2022 136,981 $ 4 495,538 (358,611) 50
Ending balance, Shares at Jun. 30, 2022   42,808,288      
Beginning balance at Mar. 31, 2022 152,886 $ 4 491,365 (338,687) 204
Beginning balance, Shares at Mar. 31, 2022   42,695,195      
Issuance of common stock upon exercise of stock options 1   1    
Issuance of common stock upon exercise of stock options, shares   625      
Issuance of common stock related to ESPP purchase, shares   112,468      
Issuance of common stock related to ESPP purchase 111   111    
Stock-based compensation expense related to employee stock awards 3,554   3,554    
Stock-based compensation expense related to employee stock purchases 447   447    
Vesting of early exercised common stock options 60   60    
Other comprehensive loss (154)       (154)
Net loss (19,924)     (19,924)  
Ending balance at Jun. 30, 2022 $ 136,981 $ 4 $ 495,538 $ (358,611) $ 50
Ending balance, Shares at Jun. 30, 2022   42,808,288