Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Stock Incentive Plan - Option Activity (Details)

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Note 5 - Stock Incentive Plan - Option Activity (Details) - $ / shares
 3 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Balances (in shares) 2,119,001 2,109,001
Balances, exercise price (in dollars per share) $ 4 $ 4.01
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) [1] 10,000  
Granted, exercise price (in dollars per share) [1] $ 0.34  
Forfeited(2) (in shares) [2] 0  
Forfeited, exercise price (in dollars per share) [2] $ 0  
Unvested options outstanding expected to vest(3) (in shares) [3] 543,578  
Unvested options outstanding expected to vest(3), exercise price (in dollars per share) [3] $ 3.3  
[1] 10,000 options vest as follows: options to purchase 10,000 shares of the Company’s common stock vest monthly over one year.
[2] There were no forfeitures during the three months ended March 31, 2024.
[3] Forfeitures only include known forfeitures to-date as the Company accounts for forfeitures as they occur due to a limited history of forfeitures.