Quarterly report [Sections 13 or 15(d)]

Note 6 - Stockholders' (Deficit) Equity and Equity-linked Instruments - Schedule of Warrant Activity (Details)

v3.25.3
Note 6 - Stockholders' (Deficit) Equity and Equity-linked Instruments - Schedule of Warrant Activity (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Ending balance [1] $ 71,000 $ 947,000 $ 71,000 $ 947,000
Total fair value of warrant liability [1] 71,000 947,000 71,000 947,000
Series AAA-3 and AAA-4 Junior Preferred Stock Warrants [Member]        
Beginning balance 20,000 0 348,000 0
Initial fair value of warrant liability – grant date [2]   346,000   346,000
Change in fair value (3,000) 14,000 (331,000) 14,000
Ending balance 17,000 360,000 17,000 360,000
Warrants Issued With Placement Agent Agreement [Member]        
Beginning balance 54,000 665,000 587,000 665,000
Initial fair value of warrant liability – grant date [2]   134,000   134,000
Change in fair value 0 (212,000) (533,000) (212,000)
Ending balance 54,000 587,000 54,000 587,000
Total fair value of warrant liability $ 54,000 $ 587,000 $ 54,000 $ 587,000
[1] Refer to Note 5 for information regarding the YP Warrant issued in connection with the YP Note.
[2] Estimated fair value on the respective dates of issuance.