Quarterly report [Sections 13 or 15(d)]

Condensed Statements of Stockholders' Equity (Deficit) (Unaudited)

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Condensed Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($)
Preferred Stock [Member]
Series C Preferred Stock [Member]
Preferred Stock [Member]
Series L Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Series L Preferred Stock [Member]
Total
Balance at Dec. 31, 2024 $ 1,000 $ 2,000 $ 693,554,000 $ (695,227,000)   $ (1,670,000)
Balance, shares at Dec. 31, 2024 96,230 2,234,328        
Exercise of warrants for cash, net $ 1,000 615,000   616,000
Exercise of warrants for cash, net, shares     302,069        
Fair value of vested stock options 3,000   3,000
Net loss (776,000)   (776,000)
Issuance of prefunded warrant in settlement of vendor payable 847,000   847,000
Balance at Mar. 31, 2025 $ 1,000 $ 3,000 695,019,000 (696,003,000)   (980,000)
Balance, shares at Mar. 31, 2025 96,230 2,536,397        
Balance at Dec. 31, 2025 $ 1,000 $ 26,000 729,661,000 (723,901,000)   5,787,000
Balance, shares at Dec. 31, 2025 96,230 3,642 25,534,173        
Exercise of warrants for cash, net $ 1,000 576,000   577,000
Exercise of warrants for cash, net, shares     1,123,816        
Series L convertible preferred stock and warrants issued for cash, net 4,003,000   4,003,000
Series L convertible preferred stock and warrants issued for cash, net, shares   4,611          
Conversion of Series L convertible preferred stock into common stock $ 8,000 (8,000)  
Conversion of Series L convertible preferred stock into common stock, shares   (3,910) 8,256,108        
Dividend on Series L convertible preferred stock 103,000 (103,000) $ (103,000)
Dividend on Series L convertible preferred stock, shares     267,794        
Fair value of vested stock options 46,000   46,000
Net loss (2,833,000)   (2,833,000)
Balance at Mar. 31, 2026 $ 1,000 $ 35,000 $ 734,381,000 $ (726,837,000)   $ 7,580,000
Balance, shares at Mar. 31, 2026 96,230 4,343 35,181,891