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Condensed Consolidated Statements of Stockholders’ Equity (Deficit) - USD ($)
$ in Thousands
Total
Lincoln Park Purchase Agreement
At-the-Market Offering
Common stock
Common stock
Lincoln Park Purchase Agreement
Common stock
At-the-Market Offering
Additional paid-in capital
Additional paid-in capital
Lincoln Park Purchase Agreement
Additional paid-in capital
At-the-Market Offering
Accumulated deficit
Accumulated other comprehensive loss
Beginning balance (in shares) at Dec. 31, 2023       161,113,744              
Beginning balance at Dec. 31, 2023 $ (24,481)     $ 16     $ 469,081     $ (483,061) $ (10,517)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock in connection with the Purchase Agreement/ATM agreement (in shares)         25,569,997            
Issuance of common stock in connection with the Purchase Agreement/ATM agreement   $ 32,187     $ 2     $ 32,185      
Issuance of common stock in connection with exercise of stock options and vesting of RSUs (in shares)           19,337,124          
Issuance of common stock in connection with exercise of stock options and vesting of RSUs     $ 20,688     $ 2     $ 20,686    
Issuance of common stock in connection with the Employee Stock Purchase Plan (in shares)       262,777              
Issuance of common stock in connection with the Employee Stock Purchase Plan 171           171        
Issuance of common stock under stock-based compensation plans (in shares)       1,679,951              
Issuance of common stock in connection with exercise of stock options and vesting of RSUs 84           84        
Stock-based compensation 13,790           13,790        
Tax withholding related to vesting of restricted stock units (1,470)           (1,470)        
Foreign currency translation adjustment, net of tax (82)                   (82)
Net loss (57,802)                 (57,802)  
Ending balance (in shares) at Sep. 30, 2024       207,963,593              
Ending balance at Sep. 30, 2024 (16,915)     $ 20     534,527     (540,863) (10,599)
Beginning balance (in shares) at Jun. 30, 2024       186,073,087              
Beginning balance at Jun. 30, 2024 (21,514)     $ 18     507,067     (518,151) (10,448)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock in connection with the Purchase Agreement/ATM agreement (in shares)         10,621,447 11,058,026          
Issuance of common stock in connection with the Purchase Agreement/ATM agreement   11,899 11,587   $ 1 $ 1   11,898 11,586    
Issuance of common stock under stock-based compensation plans (in shares)       211,033              
Issuance of common stock in connection with exercise of stock options and vesting of RSUs 41           41        
Stock-based compensation 4,054           4,054        
Tax withholding related to vesting of restricted stock units (119)           (119)        
Foreign currency translation adjustment, net of tax (151)                   (151)
Net loss (22,712)                 (22,712)  
Ending balance (in shares) at Sep. 30, 2024       207,963,593              
Ending balance at Sep. 30, 2024 $ (16,915)     $ 20     534,527     (540,863) (10,599)
Beginning balance (in shares) at Dec. 31, 2024 266,595,867     266,595,867              
Beginning balance at Dec. 31, 2024 $ 62,646     $ 27     700,069     (626,940) (10,510)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock in connection with the Purchase Agreement/ATM agreement (in shares)         3,873,113 50,948,852          
Issuance of common stock in connection with the Purchase Agreement/ATM agreement   $ 37,787 $ 536,741     $ 5   $ 37,787 $ 536,736    
Issuance of common stock in connection with exercise of stock options and vesting of RSUs (in shares)       6,796,107              
Issuance of common stock in connection with exercise of stock options and vesting of RSUs 8,227     $ 1     8,226        
Issuance of common stock in connection with the Employee Stock Purchase Plan (in shares)       95,331              
Issuance of common stock in connection with the Employee Stock Purchase Plan 291           291        
Issuance of common stock in connection with exercise of warrants (in shares)       17,661,925              
Issuance of common stock in connection with exercise of warrants 328,806     $ 1     328,805        
Stock-based compensation 17,394           17,394        
Tax withholding related to vesting of restricted stock units (9,986)           (9,986)        
Foreign currency translation adjustment, net of tax 1,384                   1,384
Net loss $ (312,736)                 (312,736)  
Ending balance (in shares) at Sep. 30, 2025 345,971,195     345,971,195              
Ending balance at Sep. 30, 2025 $ 670,554     $ 34     1,619,322     (939,676) (9,126)
Beginning balance (in shares) at Jun. 30, 2025       339,837,650              
Beginning balance at Jun. 30, 2025 694,254     $ 33     1,503,136     (799,690) (9,225)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock in connection with exercise of stock options and vesting of RSUs (in shares)       1,030,091              
Issuance of common stock in connection with exercise of stock options and vesting of RSUs 1,367     $ 1     1,366        
Issuance of common stock in connection with exercise of warrants (in shares)       5,103,454              
Issuance of common stock in connection with exercise of warrants 112,544           112,544        
Stock-based compensation 6,598           6,598        
Tax withholding related to vesting of restricted stock units (4,322)           (4,322)        
Foreign currency translation adjustment, net of tax 99                   99
Net loss $ (139,986)                 (139,986)  
Ending balance (in shares) at Sep. 30, 2025 345,971,195     345,971,195              
Ending balance at Sep. 30, 2025 $ 670,554     $ 34     $ 1,619,322     $ (939,676) $ (9,126)