Consolidated statements of changes in redeemable convertible preferred stock and stockholders' equity (deficit) - USD ($)
$ in Thousands
Total
Initial Public Offering
Green House Initial Public Offering
Series A
Series A
Initial Public Offering
Series B-1
Series B-1
Initial Public Offering
Series B-2
Series B-2
Initial Public Offering
Common Stock
Common Stock
Initial Public Offering
Common Stock
Green House Initial Public Offering
Additional Paid-in Capital
Additional Paid-in Capital
Initial Public Offering
Additional Paid-in Capital
Green House Initial Public Offering
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2019 $ (64,891)                 $ 0     $ 1,421     $ (66,197) $ (115)
Beginning balance, Shares at Dec. 31, 2019 10,819,843         8,344,034                      
Beginning balance at Dec. 31, 2019 $ 100,695         $ 81,384                      
Beginning balance, Shares at Dec. 31, 2019                   3,927,803              
Issuance of common stock upon exercise of stock options 261                 $ 0     261        
Issuance of common stock upon exercise of stock options, shares                   188,594              
Vesting of early exercised common stock 363                       363        
Issuance of Series A redeemable convertible stock upon exercise of Series A warrants       $ 1,262                          
Issuance of Series A redeemable convertible stock upon exercise of Series A warrants, shares       120,702                          
Issuance of redeemable convertible preferred stock               $ 40,000                  
Issuance of redeemable convertible preferred stock, shares               3,569,630                  
Reclassification of Series A warrant and convertible preferred stock liabilities to equity       $ 620       $ 14,560                  
Reclassification of Series A warrant and convertible preferred stock liabilities to equity, shares         (10,940,545)                        
Conversion of redeemable convertible preferred stock to common stock   $ 238,523     $ (102,577)   $ (81,384)   $ (54,560)   $ 3     $ 238,520      
Conversion of redeemable convertible preferred stock to common stock, shares             (8,344,034)   (3,569,630)   22,854,209            
Issuance of common stock   $ 139,500 $ 16,043               $ 1 $ 0   $ 139,499 $ 16,042    
Issuance of common stock, shares                     10,000,000 1,150,000          
Costs related to the follow-on offering (4,116)                       (4,116)        
Stock-based compensation 2,975                       2,975        
Other comprehensive loss (73)                               (73)
Net loss (108,543)                             (108,543)  
Ending balance at Dec. 31, 2020 220,039                 $ 4     394,963     (174,740) (188)
Ending balance, Shares at Dec. 31, 2020                   38,120,606              
Issuance of common stock upon exercise of stock options 394                       394        
Issuance of common stock upon exercise of stock options, shares                   124,013              
Stock Issued During Period, Value, Employee Stock Purchase Plan 653                       653        
Stock Issued During Period, Shares, Employee Stock Purchase Plans                   45,610              
Stock-based compensation expense related to employee stock awards 12,541                       12,541        
Stock-based compensation expense related to employee stock purchases 795                       795        
Vesting of early exercised common stock 292                       292        
Issuance of common stock 78,584                       78,584        
Issuance of common stock, shares                   4,400,000              
Costs related to the follow-on offering (875)                       (875)        
Other comprehensive loss 640                               640
Net loss (128,332)                             (128,332)  
Ending balance at Dec. 31, 2021 $ 184,731                 $ 4     $ 487,347     $ (303,072) $ 452
Ending balance, Shares at Dec. 31, 2021                   42,690,229