Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Tables)

v3.25.1
Note 10 - Share-based Compensation (Tables)
6 Months Ended
Mar. 31, 2025
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

March 31,

   

March 31,

 
   

2025

   

2024

   

2025

   

2024

 
                                 

Selling, general and administrative

  $ 1,618,958     $ 2,294,427     $ 3,623,674     $ 4,694,851  

Research and development

    604,885       835,324       1,284,323       1,318,703  

Discontinued operations

          504,420       (10,049 )     1,027,566  

Share-based compensation

  $ 2,223,843     $ 3,634,171     $ 4,897,948     $ 7,041,120  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

March 31,

   

March 31,

 
   

2025

   

2024

   

2025

   

2024

 

Weighted Average Assumptions:

                               

Expected volatility

    115.5 %     109.1 %     110.2 %     105.6 %

Expected dividend yield

    0.0 %     0.0 %     0.0 %     0.0 %

Risk-free interest rate

    4.1 %     4.2 %     3.6 %     4.6 %

Expected term (in years)

    6.0       5.6       6.0       5.9  

Fair value of options granted

  $ 0.39     $ 0.44     $ 0.63     $ 0.55  
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, 2024

    18,462,428     $ 4.59                  

Granted

    255,000     $ 0.75                  

Exercised

        $                  

Forfeited and expired

    (678,576 )   $ 5.23                  

Outstanding at March 31, 2025

    18,038,852     $ 4.51       5.39     $ 585  

Exercisable at March 31, 2025

    14,295,539     $ 4.72       4.59     $