v3.25.4
Note 8 - Equity Transactions and Stock-based Compensation (Tables)
6 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Risk Free Interest Rate

  3.94% to 4.17%

Volatility

  96.9% to 110.9%

Term

 

7.5 to 10 years

 

Dividend Rate

  0.00%

Closing Price of Common Stock

  $0.32 
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
      

Weighted

 
      

Average

 
      

Exercise

 
  

Options

  

Price

 
         

Outstanding as of June 30, 2025

  4,481,350  $0.39 

Granted

  526,500   0.33 

Exercised

  -   - 
Terminated  (51,666)  0.30 

Expired

  (13,667)  0.43 

Outstanding as of December 31, 2025

  4,942,517  $0.38 

Exercisable at December 31, 2025

  3,828,517  $0.40