Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Tables)

v3.25.4
Note 10 - Share-based Compensation (Tables)
3 Months Ended
Dec. 31, 2025
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

 
   

December 31,

 
   

2025

   

2024

 
                 

General and administrative

  $ 593,206     $ 2,004,716  

Research and development

    164,399       679,438  

Discontinued operations

          (10,049 )

Share-based compensation

  $ 757,605     $ 2,674,105  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Three Months Ended

 
   

December 31,

 
   

2025

   

2024

 

Weighted Average Assumptions:

               

Expected volatility

    116.6 %     109.9 %

Expected dividend yield

    0.0 %     0.0 %

Risk-free interest rate

    3.8 %     3.6 %

Expected term (in years)

    6.0       6.0  

Fair value of options granted

  $ 2.20     $ 6.44  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
           

Weighted Average

         
                   

Remaining

   

Aggregate

 
   

Number of

   

Exercise Price

   

Contractual Term

   

Intrinsic

 
   

Shares

   

Per Share

   

(years)

   

Value

 
                                 

Outstanding at September 30, 2025

    1,911,020     $ 42.18                  

Granted

    350,700     $ 2.55                  

Exercised

        $                  

Forfeited and expired

    (133,574 )   $ 39.28                  

Outstanding at December 31, 2025

    2,128,146     $ 35.83       5.95     $  

Exercisable at December 31, 2025

    1,473,667     $ 49.16       4.44     $