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)
6 Months Ended
Jun. 30, 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)

    78,592       0.60  

Forfeited(2)

           

Exercised

    (84,000 )     0.001  

Balances at June 30, 2024

    2,103,593       4.05  

Unvested options outstanding expected to vest(3)

    539,306       2.96  
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

    1,366,487       6.94       864,151       6.05  

$5.01 - $10.00

    617,942       5.00       580,972       4.89  

$10.01 - $15.00

    113,039       5.59       113,039       5.59  

$15.01 - $20.00

    6,125       5.59       6,125       5.59  
      2,103,593       6.29       1,564,287       5.58  
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)

    29,973       0.65  

Vested

    (98,910 )    

4.10

 

Unvested Balance at June 30, 2024

    349,154       2.97  
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

June 30,

   

Six Months Ended

June 30,

 
   

2024

   

2023

   

2024

   

2023

 
                                 

Stock options granted

    68,592             78,592       508,902  

Weighted-average grant date fair value per share

  $ 0.51     $     $ 0.48     $ 2.38  

Fair value of shares vested

  $ 181,084     $ 305,087     $ 359,734     $ 528,360