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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Preferred Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Gain (Loss)
Treasury Stock
Common stock, Beginning balance (in shares) at Dec. 31, 2021   150,082,000          
Beginning balance at Dec. 31, 2021 $ 113,595 $ 150 $ 0 $ 1,608,749 $ (1,487,776) $ (10) $ (7,518)
Preferred stock beginning balance (in shares) at Dec. 31, 2021     0        
Stock-based compensation 11,520     11,520      
Issuance of equity-classified warrants 1,030     1,030      
Issuance of treasury stock 0     (6,321)     6,321
Issuance of common stock under Equity Incentive Plans (in shares)   32,000          
Repurchase of common stock (864)           (864)
Issuance of stock, net of fees (in shares)   39,100,000          
Issuance of stock, net of fees 94,205 $ 39   94,166      
Net loss (101,944)       (101,944)    
Unrealized gain (loss) on investments (418)         (418)  
Common stock, Ending balance (in shares) at Dec. 31, 2022   189,214,000          
Preferred stock ending balance (in shares) at Dec. 31, 2022     0        
Ending balance at Dec. 31, 2022 117,124 $ 189 $ 0 1,709,144 (1,589,720) (428) (2,061)
Stock-based compensation 14,340     14,340      
Issuance of equity-classified warrants 307     307      
Issuance of common stock under Equity Incentive Plans (in shares)   1,291,000          
Issuance of common stock under Equity Incentive Plans 0 $ 1   (1)      
Repurchase of common stock (824)           (824)
Issuance of stock, net of fees (in shares)   55,288,000          
Issuance of stock, net of fees 138,823 $ 55   138,768      
Net loss (177,119)       (177,119)    
Unrealized gain (loss) on investments $ 459         459  
Common stock, Ending balance (in shares) at Dec. 31, 2023 245,792,668 245,793,000          
Preferred stock ending balance (in shares) at Dec. 31, 2023 0   0        
Ending balance at Dec. 31, 2023 $ 93,110 $ 245 $ 0 1,862,558 (1,766,839) 31 (2,885)
Stock-based compensation 13,499     13,499      
Issuance of equity-classified warrants 0            
Issuance of common stock under Equity Incentive Plans (in shares)   2,020,000          
Issuance of common stock under Equity Incentive Plans 64 $ 3   61      
Repurchase of common stock (1,730)           (1,730)
Issuance of stock, net of fees (in shares)     2,304,000        
Issuance of stock, net of fees 241,322   $ 23 241,299      
Conversion of preferred stock to common stock (in shares)   115,207,000 (2,304,000)        
Conversion of preferred stock to common stock 0 $ 115 $ (23) (92)      
Net loss (200,403)       (200,403)    
Unrealized gain (loss) on investments $ 88         88  
Common stock, Ending balance (in shares) at Dec. 31, 2024 363,020,303 363,020,000          
Preferred stock ending balance (in shares) at Dec. 31, 2024 2,304,147   0        
Ending balance at Dec. 31, 2024 $ 145,950 $ 363 $ 0 $ 2,117,325 $ (1,967,242) $ 119 $ (4,615)