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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)   1,025,684        
Stock options exercised, net 7,847 $ 11 7,836      
Vesting of restricted stock units, net of taxes (in shares)   2,068,048        
Vesting of restricted stock units, net of taxes (16,355)   (16,355)      
Stock-based compensation 67,982   67,982      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   5,244,936        
Issuance of shares in connection with at-the-market offering, net of issuance costs 63,108 $ 52 63,056      
Warrants exercised (in shares)   1,220,100        
Warrants exercised 12 $ 12 12 (12)    
Unrealized gain (loss) on available-for-sale securities (79)       (79)  
Foreign currency translation adjustment 5,416       5,416  
Net loss (117,741)         (117,741)
Ending balance (in shares) at Sep. 30, 2023   290,667,041        
Ending balance at Sep. 30, 2023 133,237 $ 2,890 2,787,275 71 (6,768) (2,650,231)
Beginning balance (in shares) at Jun. 30, 2023   286,992,923        
Beginning balance at Jun. 30, 2023 111,581 $ 2,856 2,733,148 71 4,160 (2,628,654)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   372,467        
Stock options exercised, net 3,442 $ 4 3,438      
Vesting of restricted stock units, net of taxes (in shares)   299,297        
Vesting of restricted stock units, net of taxes (2,347)   (2,347)      
Stock-based compensation 16,511   16,511      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   3,002,354        
Issuance of shares in connection with at-the-market offering, net of issuance costs 36,555 $ 30 36,525      
Unrealized gain (loss) on available-for-sale securities (18)       (18)  
Foreign currency translation adjustment (10,910)       (10,910)  
Net loss (21,577)         (21,577)
Ending balance (in shares) at Sep. 30, 2023   290,667,041        
Ending balance at Sep. 30, 2023 $ 133,237 $ 2,890 2,787,275 71 (6,768) (2,650,231)
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) 791,000 796,202        
Stock options exercised, net $ 6,122 $ 7 6,115      
Vesting of restricted stock units, net of taxes (in shares)   2,608,392        
Vesting of restricted stock units, net of taxes (21,197)   (21,197)      
Stock-based compensation 65,688   65,688      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   1,692,291        
Issuance of shares in connection with at-the-market offering, net of issuance costs 19,153 $ 17 19,136      
Unrealized gain (loss) on available-for-sale securities 0          
Foreign currency translation adjustment 19,730       19,730  
Net loss $ (70,845)         (70,845)
Ending balance (in shares) at Sep. 30, 2024 298,691,094 298,691,094        
Ending balance at Sep. 30, 2024 $ 178,825 $ 2,942 2,905,760 71 24,971 (2,754,919)
Beginning balance (in shares) at Jun. 30, 2024   296,428,877        
Beginning balance at Jun. 30, 2024 132,523 $ 2,923 2,868,925 71 8,794 (2,748,190)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   215,653        
Stock options exercised, net 1,805 $ 2 1,803      
Vesting of restricted stock units, net of taxes (in shares)   354,273        
Vesting of restricted stock units, net of taxes (2,792)   (2,792)      
Stock-based compensation 18,688   18,688      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   1,692,291        
Issuance of shares in connection with at-the-market offering, net of issuance costs 19,153 $ 17 19,136      
Unrealized gain (loss) on available-for-sale securities 9       9  
Foreign currency translation adjustment 16,168       16,168  
Net loss $ (6,729)         (6,729)
Ending balance (in shares) at Sep. 30, 2024 298,691,094 298,691,094        
Ending balance at Sep. 30, 2024 $ 178,825 $ 2,942 $ 2,905,760 $ 71 $ 24,971 $ (2,754,919)