Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders??? Equity

v3.24.3
Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands
Total
Preferred Stock
Series A Preferred Stock
Preferred Stock
Series B Preferred Stock
Preferred Stock
Series C Preferred Stock
Preferred Stock
Series D Preferred Stock
Preferred Stock
Series E Preferred Stock
Preferred Stock
Series F Preferred Stock
Preferred Stock
Series F-1 Preferred Stock
Preferred Stock
Series F-2 Preferred Stock
Common Stock
Common Stock
Series A Preferred Stock
Common Stock
Series B Preferred Stock
Common Stock
Series C Preferred Stock
Common Stock
Series F Preferred Stock
Common Stock
Series F-1 Preferred Stock
Common Stock
Series F-2 Preferred Stock
Common Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2022   251 1,443 500,756 1,058 0 0 0 0 149,043                  
Balance as of beginning of period at Dec. 31, 2022 $ 530 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 2               $ 88,533 $ (88,005)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Exercise of common stock warrants (in shares)                   729                  
Exercise of common stock warrants 2,062                 $ 1               2,061  
Number of Common Stock Shares Issued Upon Conversion                   210                  
Issuance of common stock in connection with conversion of notes 516                                 516  
Issuance of Series E preferred stock in connection with LOC (in shares)           5,000                          
Issuance of Series E preferred stock in connection with LOC 4,350                                 4,350  
Deemed dividend for repricing of Series D preferred stock                                   6 (6)
Stock Issued During Period, Value, Other 298                                 298  
Stock-based compensation (in shares)                   265                  
Issuance of common stock/At-the-market offering, net of offering costs (in shares)                   1,412                  
Issuance of common stock/at-the-market offering, net of offering costs 2,107                 $ 1               2,106  
Stock-based compensation 181                                 181  
Net loss (2,300)                                   (2,300)
Ending balance (in shares) at Mar. 31, 2023   251 1,443 500,756 1,058 5,000 0 0 0 151,659                  
Balance as of ending of period at Mar. 31, 2023 7,744 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 4               98,051 (90,311)
Beginning balance (in shares) at Dec. 31, 2022   251 1,443 500,756 1,058 0 0 0 0 149,043                  
Balance as of beginning of period at Dec. 31, 2022 530 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 2               88,533 (88,005)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Net loss (19,678)                                    
Ending balance (in shares) at Sep. 30, 2023   251 1,443 500,756 0 0 4,448 653 1,153 192,691                  
Balance as of ending of period at Sep. 30, 2023 9,274 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 7               116,956 (107,689)
Beginning balance (in shares) at Mar. 31, 2023   251 1,443 500,756 1,058 5,000 0 0 0 151,659                  
Balance as of beginning of period at Mar. 31, 2023 7,744 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 4               98,051 (90,311)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Issuance of common stock in connection with Series A and Series B Dividends (in shares)                   50                  
Issuance of common stock upon the conversion of Series E preferred stock 1                 $ 1                  
Issuance of common stock in connection with conversion of October Notes (in shares)                   1,660                  
Issuance of common stock in connection with conversion of October Notes 2,166                 $ 1               2,165  
Dividends paid in shares of Series D preferred stock (in shares)         139                            
Series D preferred stock exchanged for Series F preferred stock in connection with Exchange Agreements (in shares)         (1,197)   1,847                        
Series D preferred stock exchanged for Series F preferred stock in connection with Exchange Agreements (450)                                 (450)  
Conversion of Demand Notes and October Notes into Series F preferred stock in connection with Exchange Agreements (in shares)             3,198 3,583                      
Conversion of Demand Notes and October Notes into Series F preferred stock in connection with Exchange Agreements 1,276                                 1,276  
Conversion of January Notes into Series F preferred stock in connection with Exchange Agreements (in shares)             206   1,153                    
Conversion of January Notes into Series F preferred stock in connection with Exchange Agreements 82                                 82  
Issuance of Series F-1 preferred stock 1,372                                 1,372  
Issuance of Series F-2 preferred stock 464                                 464  
Commitment to issue shares of common stock in connection with January Notes 2,410                                 2,410  
Commitment to issue shares of common stock in connection with LOC Notes 230                                 230  
Commitment to issue shares of Series E preferred stock in connection with LOC Notes (in shares)           (5,000)                          
Commitment to issue shares of Series E preferred stock in connection with LOC Notes 3,363                                 3,363  
Commitment to issue shares of common stock in connection with Demand Notes 286                                 286  
Issuance of common stock upon the conversion of Series E preferred stock (in shares)                   556                  
Stock-based compensation 132                                 132  
Net loss (14,519)                                   (14,519)
Ending balance (in shares) at Jun. 30, 2023   251 1,443 500,756 0 0 5,251 3,583 1,153 153,925                  
Balance as of ending of period at Jun. 30, 2023 4,557 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 6               109,381 (104,830)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Issuance of common stock to settle commitment shares (in shares)                   3,807                  
Issuance of common stock to settle commitment shares                   $ 1               (1)  
Number of Common Stock Shares Issued Upon Conversion             (803) (2,930)           689 2,172        
Issuance of common stock in connection with January Notes Settlement (in shares)                   1,265                  
Issuance of common stock in connection with January Notes Settlement 1,160                                 1,160  
Issuance of common stock in connection with equity line of credit issuance costs (in shares)                   146                  
Issuance of common stock in connection with equity line of credit issuance costs 114                                 114  
Issuance of common stock under the equity line of credit, net of issuance costs (in shares)                   26,580                  
Issuance of common stock under the equity line of credit, net of issuance costs 4,489                                 4,489  
Issuance of common stock/At-the-market offering, net of offering costs (in shares)                   3,887                  
Issuance of common stock/at-the-market offering, net of offering costs 1,680                                 1,680  
Reclassification of common stock to additional paid-in capital to reflect no change in par value in connection with reverse stock split (in shares)                   220                  
Stock-based compensation 133                                 133  
Net loss (2,859)                                   (2,859)
Ending balance (in shares) at Sep. 30, 2023   251 1,443 500,756 0 0 4,448 653 1,153 192,691                  
Balance as of ending of period at Sep. 30, 2023 9,274 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 7               116,956 (107,689)
Beginning balance (in shares) at Dec. 31, 2023   251 1,443 500,756 0 0 4,448 653 1,153 318,463                  
Balance as of beginning of period at Dec. 31, 2023 4,677 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               $ 7 121,665 (116,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Issuance of common stock in connection with equity line of credit (in shares)                   140,904                  
Issuance of common stock in connection with equity line of credit 1,391                 $ 3               1,388  
Issuance of common stock/At-the-market offering, net of offering costs (in shares)                   32,163                  
Issuance of common stock/at-the-market offering, net of offering costs 588                                 588  
Stock-based compensation 274                                 274  
Net loss (4,612)                                   (4,612)
Ending balance (in shares) at Mar. 31, 2024   251 1,443 500,756 0 0 4,448 653 1,153 491,530                  
Balance as of ending of period at Mar. 31, 2024 2,318 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               10 123,915 (121,607)
Beginning balance (in shares) at Dec. 31, 2023   251 1,443 500,756 0 0 4,448 653 1,153 318,463                  
Balance as of beginning of period at Dec. 31, 2023 4,677 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               $ 7 121,665 (116,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Issuance of common stock/At-the-market offering, net of offering costs (in shares)                                 32,163    
Ending balance (in shares) at Jun. 30, 2024   0 0 0 0 0 0 0 0 3,454,658                  
Balance as of ending of period at Jun. 30, 2024 8,782 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               $ 0 135,418 (126,636)
Beginning balance (in shares) at Dec. 31, 2023   251 1,443 500,756 0 0 4,448 653 1,153 318,463                  
Balance as of beginning of period at Dec. 31, 2023 4,677 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               7 121,665 (116,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Net loss (15,505)                                    
Ending balance (in shares) at Sep. 30, 2024   0 0 0 0 0 0 0 0 6,708,113                  
Balance as of ending of period at Sep. 30, 2024 9,923 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               0 142,423 (132,500)
Beginning balance (in shares) at Mar. 31, 2024   251 1,443 500,756 0 0 4,448 653 1,153 491,530                  
Balance as of beginning of period at Mar. 31, 2024 2,318 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               10 123,915 (121,607)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Number of Common Stock Shares Issued Upon Conversion   (251) (1,443) (500,756)     (4,448) (653) (1,153)   36,220 220,782 78,056 648,441 113,576 140,264      
Issuance of common stock in connection with equity line of credit (in shares)                   1,599,123                  
Issuance of common stock in connection with equity line of credit 9,343                                 9,343  
Issuance of common stock upon the conversion of Series E preferred stock (in shares)                   126,666                  
Reclassification of common stock to additional paid-in capital to reflect no change in par value in connection with reverse stock split 0                 $ (10)               10  
Stock-based compensation 2,150                                 2,150  
Net loss (5,029)                                   (5,029)
Ending balance (in shares) at Jun. 30, 2024   0 0 0 0 0 0 0 0 3,454,658                  
Balance as of ending of period at Jun. 30, 2024 8,782 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               $ 0 135,418 (126,636)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                      
Number of Common Stock Shares Issued Upon Conversion                             25,712        
Issuance of common stock in connection with equity line of credit (in shares)                   1,493,000                  
Issuance of common stock in connection with equity line of credit 3,606                                 3,606  
Issuance of common stock/At-the-market offering, net of offering costs (in shares)                   980,294             980,294    
Issuance of common stock/at-the-market offering, net of offering costs 1,183                                 1,183  
Issuance of common stock upon the conversion of Series E preferred stock (in shares)                   504,449                  
Issuance of common stock in connection with inducement award (in shares)                   200,000                  
Issuance of common stock in connection with employee inducement award (See Note 7) 292                                 292  
Issuance of common stock in connection with warrant (in shares)                   50,000                  
Issuance of common stock in connection with warrant exchange 63                                 63  
Stock-based compensation 1,861                                 1,861  
Net loss (5,864)                                   (5,864)
Ending balance (in shares) at Sep. 30, 2024   0 0 0 0 0 0 0 0 6,708,113                  
Balance as of ending of period at Sep. 30, 2024 $ 9,923 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0               $ 0 $ 142,423 $ (132,500)