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STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
Series A Preferred Stock
Preferred stock
Series B Preferred Stock
Preferred stock
Series C Preferred Stock
Preferred stock
Series C Preferred Stock
Additional Paid-in Capital
Series C Preferred Stock
Series D Preferred Stock
Common Stock
Series D Preferred Stock
Preferred stock
Series D Preferred Stock
Additional Paid-in Capital
Series D Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Total
Balance as of beginning at Dec. 31, 2022 $ 5,000 $ 3,000 $ 0             $ 10,000 $ 41,894 $ (37,763,000) $ 4,149,000
Balance as of beginning (in shares) at Dec. 31, 2022 4,897,553 3,195,667 438,367             9,673,870      
Increase (Decrease) in Stockholders' Equity                          
Conversions of preferred stock into common stock $ (5,000) $ (3,000) $ 0             $ 17,000 (9)    
Conversions of preferred stock into common stock (in shares) (4,897,553) (3,195,667) (459,455)             17,105,214      
Issuance of Common Stock for cash, net of issuance costs     $ 0 $ 147 $ 147,000         $ 3,000 15,474   15,477,000
Issuance of Common Stock for cash, net of issuance costs (in shares)     21,088             2,627,061      
Issuances of common stock for services                   $ 0 55   55,000
Issuances of common stock for services (in shares)                   24,858      
Vesting of common stock from services performed                     75   75,000
Exercises of stock warrants                   $ 2,000 5,679   5,681,000
Exercises of stock warrants (in shares)                   1,907,388      
Stock-based compensation                     1,559   1,559,000
Net loss                       (13,745,000) (13,745,000)
Balance as of end at Dec. 31, 2023                   $ 31,000 64,874 (51,509,000) 13,396,000
Balance as of end (in shares) at Dec. 31, 2023                   31,338,391      
Increase (Decrease) in Stockholders' Equity                          
Conversions of preferred stock into common stock           $ 1,000 $ (1,000)            
Conversions of preferred stock into common stock (in shares)           1,412,730 (1,412,730)            
Issuance of Common Stock for cash, net of issuance costs             $ 5,000 $ 11,125 $ 11,130,000 $ 2,000 5,189   5,191,000
Issuance of Common Stock for cash, net of issuance costs (in shares)             5,773,979     2,158,316      
Vesting of common stock from services performed                     50   50,000
Exercises of stock warrants (in shares)                   246,458      
Stock-based compensation                     1,174   1,174,000
Class D Preferred Stock dividends declared                       (151,000) (151,000)
Issuance of Common Stock to settle Class D Preferred Stock dividends                     151   151,000
Issuance of Common Stock to settle Class D Preferred Stock dividends (in shares)                   57,030      
Common Stock repurchased                     (111)   (111,000)
Common Stock repurchased (in shares)                   (45,252)      
Net loss                       (16,328,000) (16,328,000)
Balance as of end at Dec. 31, 2024             $ 4,000     $ 35,000 $ 82,452 $ (67,988,000) $ 14,503,000
Balance as of end (in shares) at Dec. 31, 2024             4,361,249     35,167,673