Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Tables)

v3.26.1
Note 10 - Share-based Compensation (Tables)
9 Months Ended
Jun. 30, 2026
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

   

Nine Months Ended

 
   

June 30,

   

June 30,

 
   

2026

   

2025

   

2026

   

2025

 
                                 

General and administrative

  $ 451,788     $ 1,290,912     $ 1,356,846     $ 4,914,586  

Research and development

    126,181       378,516       381,440       1,662,839  

Discontinued operations

                      (10,049 )

Share-based compensation

  $ 577,969     $ 1,669,428     $ 1,738,286     $ 6,567,376  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Three Months Ended

   

Nine Months Ended

 
   

June 30,

   

June 30,

 
   

2026

   

2025

   

2026

   

2025

 

Weighted Average Assumptions:

                               

Expected volatility

    114.7 %     115.3 %     115.0 %     114.6 %

Expected dividend yield

    0.0 %     0.0 %     0.0 %     0.0 %

Risk-free interest rate

    4.2 %     4.0 %     4.1 %     4.0 %

Expected term (in years)

    6.0       6.0       6.0       6.0  

Fair value of options granted

  $ 1.93     $ 4.32     $ 1.97     $ 4.59  
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

    2,715,100     $ 2.29                  

Exercised

        $                  

Forfeited and expired

    (185,693 )   $ 41.15                  

Outstanding at June 30, 2026

    4,440,427     $ 17.83       7.85     $ 2,294,880  

Exercisable at June 30, 2026

    1,554,278     $ 46.04       4.40     $