Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Tables)

v3.26.1
Note 10 - Share-based Compensation (Tables)
6 Months Ended
Mar. 31, 2026
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

March 31,

   

March 31,

 
   

2026

   

2025

   

2026

   

2025

 
                                 

General and administrative

  $ 311,852     $ 1,618,958     $ 905,058     $ 3,623,674  

Research and development

    90,860       604,885       255,259       1,284,323  

Discontinued operations

                      (10,049 )

Share-based compensation

  $ 402,712     $ 2,223,843     $ 1,160,317     $ 4,897,948  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

March 31,

   

March 31,

 
   

2026

   

2025

   

2026

   

2025

 

Weighted Average Assumptions:

                               

Expected volatility

          115.5 %     116.6 %     110.2 %

Expected dividend yield

          0.0 %     0.0 %     0.0 %

Risk-free interest rate

          4.1 %     3.8 %     3.6 %

Expected term (in years)

          6.0       6.0       6.0  

Fair value of options granted

  $     $ 3.88     $ 2.20     $ 6.28  
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

    (171,742 )   $ 40.32                  

Outstanding at March 31, 2026

    2,089,978     $ 35.68       5.81     $  

Exercisable at March 31, 2026

    1,436,000     $ 49.29       4.30     $