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Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Series F-4 (Tranche B)
Series E And E1 Preferred Stock
Series F-3
Series F-2
Series E Preferred Stock
Series F Preferred Stock
Stock options
Assumed conversion of ESPP shares
Preferred Stock
Preferred Stock
Preferred Stock
Preferred Stock
Series F-4 (Tranche B)
Preferred Stock
Series F-3
Preferred Stock
Series F-2
Preferred Stock
Series E Preferred Stock
Preferred Stock
Series F Preferred Stock
Common Stock
Common Stock
Preferred Stock
Common Stock
Common Stock
Common Stock
Series F-4 (Tranche B)
Common Stock
Series E And E1 Preferred Stock
Common Stock
Series F-3
Common Stock
Series F-2
Common Stock
Series E Preferred Stock
Common Stock
Series F Preferred Stock
Additional Paid in Capital
Additional Paid in Capital
Preferred Stock
Additional Paid in Capital
Common Stock
Additional Paid in Capital
Series F-4 (Tranche B)
Additional Paid in Capital
Series E And E1 Preferred Stock
Additional Paid in Capital
Series F-3
Additional Paid in Capital
Series F-2
Additional Paid in Capital
Series F Preferred Stock
Additional Paid in Capital
Stock options
Additional Paid in Capital
Assumed conversion of ESPP shares
Accumulated Deficit
Accumulated Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2022                       11,357             10,046,571                                        
Beginning balance at Dec. 31, 2022 $ (5,859)                     $ 0             $ 100                 $ 451,608                   $ (457,484) $ (83)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                              
Compensation expense for issuance of stock options                   $ 8,090 $ 61                                                 $ 8,090 $ 61    
Private placement - issuance of common stock, net of expenses (in shares)                                         19,646                                    
Private placement - issuance of common stock, net of expenses     $ 56                                   $ 1                 $ 55                  
Issuance of common stock with the employee stock purchase plan (in shares)                                     41,435                                        
Issuance of common stock with the employee stock purchase plan 123                                                     123                      
Issuance of common stock related to stock option exercises (in shares)                                     819                                        
Issuance of common stock related to stock option exercises 4                                                     4                      
Preferred share issuance (in shares)                         44,483             0                                      
Preferred share issuance   $ 49,487                                                     $ 49,487                    
Issuance of common stock related to conversion (in shares)                                 (100) (30,921)               10,000 12,073,145                        
Issuance of common stock related to conversion                 $ 11,270                                   $ 122               $ 11,148        
Issuance of common stock with common stock warrant exercises (in shares)                                     569,938                                        
Issuance of common stock with common stock warrant exercises 5                                   $ 5                                        
Net loss (47,678)                                                                         (47,678)  
Unrealized gain on investments adjustments 157                                                                           157
Foreign currency translation adjustments 61                                                                           61
Ending balance (in shares) at Dec. 31, 2023                       24,819             22,761,554                                        
Ending balance at Dec. 31, 2023 15,777                     $ 0             $ 228                 520,576                   (505,162) 135
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                              
Compensation expense for issuance of stock options                   $ 9,571 $ 196                                                 $ 9,571 $ 196    
Private placement - issuance of common stock, net of expenses (in shares)                                         876,627                                    
Private placement - issuance of common stock, net of expenses     $ 6,771                                   $ 8                 $ 6,763                  
Issuance of common stock with the employee stock purchase plan (in shares)                                     71,558                                        
Issuance of common stock with the employee stock purchase plan $ 250                                   $ 1                 249                      
Issuance of common stock related to stock option exercises (in shares) 269,673                                   269,673                                        
Issuance of common stock related to stock option exercises $ 1,682                                   $ 3                 1,679                      
Issuance of common stock related to conversion (in shares)     18,755,206                       (11,020) (1,457) (300)             2,448,886 441,514 30,000                          
Issuance of common stock related to conversion           $ 0 $ 0 $ 1                               $ 25 $ 4 $ 1             $ (25) $ (4)          
Issuance of common stock with common stock warrant exercises (in shares)         603,954                 2,150         1,307,706     3,808,327 1,045,157                                
Issuance of common stock with common stock warrant exercises 10     $ 44,619 $ 16,308                           $ 13     $ 38 $ 10         (3)     $ 44,581 $ 16,298              
Net loss (26,386)                                                                         (26,386)  
Unrealized gain on investments adjustments (22)                                                                           (22)
Foreign currency translation adjustments (31)                                                                           (31)
Ending balance (in shares) at Dec. 31, 2024                       14,192             33,061,002                                        
Ending balance at Dec. 31, 2024 $ 68,746                     $ 0             $ 331                 $ 599,881                   $ (531,548) $ 82