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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Warrants
Other Comprehensive Income (Loss)
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2022   281,108,273        
Beginning balance at Dec. 31, 2022 $ 123,047 $ 2,815 $ 2,664,744 $ 83 $ (12,105) $ (2,532,490)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   653,217        
Stock options exercised, net 4,405 $ 7 4,398      
Vesting of restricted stock units, net of taxes (in shares)   1,768,751        
Vesting of restricted stock units, net of taxes (14,008)   (14,008)      
Stock-based compensation 51,471   51,471      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   2,242,582        
Issuance of shares in connection with at-the-market offering, net of issuance costs 26,553 $ 22 26,531      
Warrants exercised (in shares)   1,220,100        
Warrants exercised 12 $ 12 12 (12)    
Unrealized gain (loss) on available-for-sale securities (61)       (61)  
Foreign currency translation adjustment 16,326       16,326  
Net loss (96,164)         (96,164)
Ending balance (in shares) at Jun. 30, 2023   286,992,923        
Ending balance at Jun. 30, 2023 111,581 $ 2,856 2,733,148 71 4,160 (2,628,654)
Beginning balance (in shares) at Mar. 31, 2023   283,300,585        
Beginning balance at Mar. 31, 2023 102,573 $ 2,820 2,691,836 83 (6,744) (2,585,422)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   269,109        
Stock options exercised, net 1,750 $ 4 1,746      
Vesting of restricted stock units, net of taxes (in shares)   155,776        
Vesting of restricted stock units, net of taxes (1,202)   (1,202)      
Stock-based compensation 16,577   16,577      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   2,047,353        
Issuance of shares in connection with at-the-market offering, net of issuance costs 24,199 $ 20 24,179      
Warrants exercised (in shares)   1,220,100        
Warrants exercised 12 $ 12 12 (12)    
Unrealized gain (loss) on available-for-sale securities 24       24  
Foreign currency translation adjustment 10,880       10,880  
Net loss (43,232)         (43,232)
Ending balance (in shares) at Jun. 30, 2023   286,992,923        
Ending balance at Jun. 30, 2023 $ 111,581 $ 2,856 2,733,148 71 4,160 (2,628,654)
Beginning balance (in shares) at Dec. 31, 2023 293,594,209 293,594,209        
Beginning balance at Dec. 31, 2023 $ 160,174 $ 2,918 2,836,018 71 5,241 (2,684,074)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares) 576,000 580,549        
Stock options exercised, net $ 4,317 $ 5 4,312      
Vesting of restricted stock units, net of taxes (in shares)   2,254,119        
Vesting of restricted stock units, net of taxes (18,405)   (18,405)      
Stock-based compensation 47,000   47,000      
Unrealized gain (loss) on available-for-sale securities (9)       (9)  
Foreign currency translation adjustment 3,562       3,562  
Net loss $ (64,116)         (64,116)
Ending balance (in shares) at Jun. 30, 2024 296,428,877 296,428,877        
Ending balance at Jun. 30, 2024 $ 132,523 $ 2,923 2,868,925 71 8,794 (2,748,190)
Beginning balance (in shares) at Mar. 31, 2024   296,159,417        
Beginning balance at Mar. 31, 2024 130,694 $ 2,922 2,853,550 71 6,644 (2,732,493)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   136,052        
Stock options exercised, net 863 $ 1 862      
Vesting of restricted stock units, net of taxes (in shares)   133,408        
Vesting of restricted stock units, net of taxes (1,684)   (1,684)      
Stock-based compensation 16,197   16,197      
Unrealized gain (loss) on available-for-sale securities 6       6  
Foreign currency translation adjustment 2,144       2,144  
Net loss $ (15,697)         (15,697)
Ending balance (in shares) at Jun. 30, 2024 296,428,877 296,428,877        
Ending balance at Jun. 30, 2024 $ 132,523 $ 2,923 $ 2,868,925 $ 71 $ 8,794 $ (2,748,190)