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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($)
$ in Thousands
Total
Initial Public Offering
Series E Preferred Stock
Series D Preferred Stock
Series C Preferred Stock
Series B Preferred Stock
Series A Preferred Stock
Limited Common Stock
Common Stock
Common Stock
Initial Public Offering
Additional Paid-In Capital
Additional Paid-In Capital
Initial Public Offering
Accumulated Deficit
Accumulated Other Comprehensive Loss (Income)
Non Controlling Interest
Beginning Balance at Dec. 31, 2019 $ (93,323)               $ 61   $ 11,655   $ (105,096) $ 16 $ 41
Convertible preferred stock, Beginning Balance, Shares at Dec. 31, 2019     73,795,777 39,540,611 47,242,235 29,468,101 134,704,785                
Convertible preferred stock, Beginning Balance at Dec. 31, 2019     $ 109,270 $ 22,000 $ 19,844 $ 9,840 $ 30,626                
Beginning Balance, Shares at Dec. 31, 2019                 6,121,821            
Change in unrealized loss on marketable securities (458)                         (458)  
Issuances of common stock upon stock option exercise $ 177               $ 1   176        
Issuances of common stock upon stock option exercise, Shares 57,581               57,581            
Stock-based compensation $ 1,775                   1,775        
Issuances of common stock upon initial public offering, net of issuance costs of $22,667   $ 209,633               $ 136   $ 209,497      
Issuances of common stock upon initial public offering, net of issuance costs of $22,667, Shares                   13,664,704          
Conversion of convertible preferred stock into common stock 149,824               $ 303   149,521        
Temporary equity, conversion of convertible preferred stock into common stock, Shares     (73,795,777) (17,844,124)     (134,704,785)                
Temporary equity, conversion of convertible preferred stock into common stock     $ (109,270) $ (9,928)     $ (30,626)                
Conversion of convertible preferred stock into common stock, Shares                 30,278,832            
Exchange of convertible preferred stock into limited common stock 41,756             $ 132     41,624        
Temporary equity, exchange of convertible preferred stock into limited common stock, Shares       (21,696,487) (47,242,235) (29,468,101)                  
Temporary equity, exchange of convertible preferred stock into limited common stock       $ (12,072) $ (19,844) $ (9,840)                  
Exchange of convertible preferred stock into limited common stock, Shares               13,164,193              
Contributions by non-controlling interest 435                           435
Net loss (14,271)                       (13,826)   (445)
Ending Balance at Mar. 31, 2020 295,548             $ 132 $ 501   414,248   (118,922) (442) 31
Ending Balance, Shares at Mar. 31, 2020               13,164,193 50,122,938            
Beginning Balance at Dec. 31, 2020 624,019             $ 92 $ 607   752,558   (129,559) 317 4
Beginning Balance, Shares at Dec. 31, 2020               9,164,193 60,713,534            
Change in unrealized loss on marketable securities (240)                         (240)  
Issuances of common stock upon stock option exercise $ 3,656               $ 6   3,650        
Issuances of common stock upon stock option exercise, Shares 587,141               587,141            
Stock-based compensation $ 4,366                   4,366        
Contributions by non-controlling interest 498                           498
Net loss (523)                       (29)   (494)
Ending Balance at Mar. 31, 2021 $ 631,776             $ 92 $ 613   $ 760,574   $ (129,588) $ 77 $ 8
Ending Balance, Shares at Mar. 31, 2021               9,164,193 61,300,675