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Note 8 - Capital Shares (Tables)
12 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

Number of Warrant Shares (#)

   

Weighted Average Exercise Price

 
                 

Balance - September 30, 2022

    521,718     $ 28.00  
                 

Issued

    384,496       8.75  

Exercised

    (100,760 )     7.65  

Expired

    (84,545 )     37.29  
                 
                 

Balance - September 30, 2023

    720,909     $ 19.51  
                 

Expired

    (111,192 )     7.26  
                 

Balance - September 30, 2024

    609,717     $ 21.74  

Number of Warrants (#)

   

Exercise Prices

   

Expiry Dates

1,687     $ 22.40    

January 2025

173,614     $ 10.50    

December 2025

15,627     $ 56.00    

February 2026

27,399     $ 31.94    

March 2027

391,390     $ 24.64    

September 2027

609,717              
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   

Year Ended September 30,2023

 
   

Class A Warrants

   

Class B Warrants

 
                 

Risk free interest rate

    4.54 %     4.76 %

Expected life (years)

 

 

3.14

 

   

 

1.14

 

 

Expected share price volatility

    90.73 %     89.70 %

Expected dividend yield

    0.00 %     0.00 %
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
   

Number of Options (#)

   

Weighted Average Exercise Price

   

Weighted Average Grant Date Fair Value

 
                         

Balance - September 30, 2022

    314,853     $ 32.62     $ 23.94  
                         

Granted

    118,579       7.47       5.23  

Forfeited

    (12,779 )     22.76       16.23  

Expired

    (38 )     1,973.20       1,973.20  
                         

Balance - September 30, 2023

    420,615     $ 25.60     $ 18.84  
                         

Granted

    500       4.10       3.10  

Forfeited

    (2,401 )     15.00       10.70  

Expired

    (35,674 )     33.18       25  
                         

Balance - September 30, 2024

    383,040     $ 24.93     $ 18.33  
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Number of Options (#)

   

Exercisable at
September 30, 2024 (#)

   

Range of Exercise Prices

   

Expiry Dates

374       374     $ 246.96    

March 2025

37,719       37,719     C$ 15.12    

August 2027 - Dec 2028

43,031       43,031     $ 22.12    

Feb 2030

51,006       51,006     $ 52.08 - 56.49    

September 2030 - Oct 2030

81,041       81,013     $ 36.75 - 40.18    

March 2025 - Sep 2031

58,753       52,957     $ 25.97    

March 2025 - Feb 2032

111,116       62,288     $ 4.10 - 10.01    

March 2025 - Oct 2033

383,040       328,388              
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Years Ended

 
   

September 30, 2024

   

September 30, 2023

 
                 

Risk free interest rate

    4.92 %     3.62% - 4.18 %

Expected life (years)

 

 

5

 

   

 

5

 

 

Expected share price volatility

    97.26 %     95.3% - 97.34 %

Expected dividend yield

    0.00 %     0.00 %
Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]
   

Number of RSU (#)

   

Weighted Average Grant Date Fair Value

 
                 

Balance - September 30, 2022

    -     $ -  
                 

Granted

    46,602       5.60  

Converted to common shares

    (13,557 )     5.60  
                 

Balance - September 30, 2023

    33,045     $ 5.60  
                 

Granted

    30,159     $ 4.56  
                 

Balance - September 30, 2024

    63,204     $ 5.10  
Share-Based Compensation Arrangements by Share-Based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block]
   

Number of RSU (#)

   

Expiry Date

Fully-vested RSUs

    63,204    

August 2033 - September 2034