Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Stock Incentive Plan (Tables)

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Note 5 - Stock Incentive Plan (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
   

Options Outstanding

 
   

Number of Shares Subject to Options

   

Weighted-Average Exercise Price

 

Balances at December 31, 2023

    2,109,001     $ 4.01  

Granted(1)

    10,000       0.34  

Forfeited(2)

           

Balances at March 31, 2024

    2,119,001       4.00  

Unvested options outstanding expected to vest(3)

    543,578       3.30  
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Exercise Prices

 

Number of Shares Subject to Options Outstanding

   

Weighted-Average Remaining Contractual Term in Years

   

Number of Shares Subject to Options Fully Vested and Exercisable

   

Weighted-Average Remaining Contractual Term in Years

 

$0.001 - $5.00

    1,381,895       6.73       887,939       5.73  

$5.01 - $10.00

    617,942       5.25       568,320       5.09  

$10.01 - $15.00

    113,039       5.84       113,039       5.84  

$15.01 - $20.00

    6,125       5.84       6,125       5.84  
      2,119,001       6.25       1,575,423       5.51  
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
           

Weighted- Average

 
   

Restricted

   

Grant Date

 
   

Stock Units

   

Fair Value

 
   

(#)

   

per Unit ($)

 

Unvested balance at December 31, 2023

    418,091       3.40  

Granted(1)

           

Vested

    (51,557 )    

4.91

 

Unvested Balance at March 31, 2024

    366,534       3.19  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]
   

Three Months Ended March 31,

 
   

2024

   

2023

 
                 

Stock options granted

    10,000       508,902  

Weighted-average grant date fair value per share

  $ 0.25     $ 2.38  

Fair value of shares vested

  $ 178,650     $ 223,273