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Condensed Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Common Stock
Class A Common Stock
ATM Offering
Common Stock
Class A Common Stock
Shelf Registration, Registered Direct Offering, March 2025
Common Stock
Class A Common Stock
Common Stock
Class B Common Stock
Additional Paid-in Capital
ATM Offering
Additional Paid-in Capital
Shelf Registration, Registered Direct Offering, March 2025
Additional Paid-in Capital
Accumulative Deficit
Class A Common Stock
ATM Offering
Class A Common Stock
Class B Common Stock
ATM Offering
Shelf Registration, Registered Direct Offering, March 2025
Total
Beginning balance at Dec. 31, 2023     $ 2       $ 134,822 $ (161,458)           $ (26,634)
Beginning balance (in shares) at Dec. 31, 2023     1,603,772 187,156                    
Increase (decrease) in stockholders' equity (deficit)                            
Stock based compensation             1,327             1,327
Reclassification of warrant liabilities             4,762             4,762
Stock options exercised             18             $ 18
Stock options exercised (in shares)       2,260                   2,260
Share conversion to common stock             34,203             $ 34,203
Share conversion to common stock (in shares)     169,271 147,359                    
Fractional share adjustment due to reverse stock split             (78)             (78)
Fractional share adjustment due to reverse stock split (in shares)     (7,771) (16)                    
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs     $ 1       20,425             20,426
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs (in shares)     1,470,537                      
Share conversion costs             (2)             (2)
Net Income (Loss)               (24,767)           (24,767)
Ending balance at Sep. 30, 2024     $ 3       195,477 (186,225)           9,255
Ending balance (in shares) at Sep. 30, 2024     3,235,809 336,759                    
Beginning balance at Jun. 30, 2024     $ 2       186,495 (175,321)           11,176
Beginning balance (in shares) at Jun. 30, 2024     2,339,348 334,515                    
Increase (decrease) in stockholders' equity (deficit)                            
Stock based compensation             724             724
Stock options exercised (in shares)     (2,260) 2,260                    
Fractional share adjustment due to reverse stock split             (78)             (78)
Fractional share adjustment due to reverse stock split (in shares)     (7,771) (16)                    
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs     $ 1       8,336             8,337
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs (in shares)     906,492                      
Net Income (Loss)               (10,904)           (10,904)
Ending balance at Sep. 30, 2024     $ 3       195,477 (186,225)           9,255
Ending balance (in shares) at Sep. 30, 2024     3,235,809 336,759                    
Beginning balance at Dec. 31, 2024     $ 4       208,969 (193,192)           15,781
Beginning balance (in shares) at Dec. 31, 2024     4,065,347 336,759           4,065,347 336,424      
Increase (decrease) in stockholders' equity (deficit)                            
Stock based compensation             1,183             $ 1,183
Stock options exercised (in shares)                           0
Share conversion to common stock (in shares)     335 (335)                    
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs $ 4 $ 1     $ 31,215 $ 1,435           $ 31,219 $ 1,436  
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs (in shares) 4,746,850 625,000             4,746,850          
Issuance of vendor warrants for consulting services             43             $ 43
Prefunded warrants exercised     $ 1       (1)              
Prefunded warrants exercised (in shares)     626,283                      
Net Income (Loss)               (22,765)           (22,765)
Ending balance at Sep. 30, 2025     $ 10       242,844 (215,957)           26,897
Ending balance (in shares) at Sep. 30, 2025     10,063,815 336,424           10,063,815 336,424      
Beginning balance at Jun. 30, 2025     $ 7       221,526 (206,418)           15,115
Beginning balance (in shares) at Jun. 30, 2025     7,096,350 336,759                    
Increase (decrease) in stockholders' equity (deficit)                            
Stock based compensation             376             376
Share conversion to common stock (in shares)     335 (335)                    
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs     $ 3       20,942             20,945
Proceeds from Equity Sale / Proceeds from Direct Registration, net of issuance costs (in shares)     2,967,130                      
Net Income (Loss)               (9,539)           (9,539)
Ending balance at Sep. 30, 2025     $ 10       $ 242,844 $ (215,957)           $ 26,897
Ending balance (in shares) at Sep. 30, 2025     10,063,815 336,424           10,063,815 336,424