v3.25.2
Note 7 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   

June 30, 2025

 
   

Level 1

   

Level 2

   

Level 3

   

Total

 

Assets:

                               

Money market funds (cash equivalents)

  $ 9,023,476     $     $     $ 9,023,476  

Total assets measured and recorded at fair value

  $ 9,023,476     $     $     $ 9,023,476  

Liabilities:

                               

Warrant liabilities

  $     $     $ 16,690     $ 16,690  

Total liabilities measured and recorded at fair value

  $     $     $ 16,690     $ 16,690  
   

December 31, 2024

 
   

Level 1

   

Level 2

   

Level 3

   

Total

 

Assets:

                               

Money market funds (cash equivalents)

  $ 12,203,627     $     $     $ 12,203,627  

Total assets measured and recorded at fair value

  $ 12,203,627     $     $     $ 12,203,627  

Liabilities:

                               

Warrant liabilities

  $     $     $ 89,010     $ 89,010  

Total liabilities measured and recorded at fair value

  $     $     $ 89,010     $ 89,010  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
   

Three Months Ended June 30,

   

Six Months Ended June 30,

 
   

2025

   

2024

   

2025

   

2024

 

Balance, beginning of period

  $ 27,816     $ 350,478     $ 89,010     $ 806,655  

Change in fair value of warrant liabilities

    (11,126 )     (200,273 )     (72,320 )     (656,450 )

Balance, end of period

  $ 16,690     $ 150,205     $ 16,690     $ 150,205  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   

June 30, 2025

   

December 31,

2024

 

Risk-free interest rate

    4.31 %     4.17 %

Remaining expected term of Private Warrants

    0.46       0.95  

Expected volatility(1)

    266.90 %     128.70 %

Stock price on valuation date

  $ 0.38     $ 1.81  

Exercise price

  $ 11.50     $ 11.50  

Expected dividend

    %     %