General form of registration statement for all companies including face-amount certificate companies

Note 10 - 2022 Convertible Note Offering (Tables)

v3.23.3
Note 10 - 2022 Convertible Note Offering (Tables)
 9 Months Ended 12 Months Ended
Jun. 30, 2023
Sep. 30, 2022
Notes Tables    
Schedule of Share-Based Payment Award, Warrants, Valuation Assumptions [Table Text Block]
   

2022 Warrants

    

2022 Placement

Agent Warrants

  

Closing price per share of Common Stock

   $ 9.98     $ 9.98  

Exercise price per share

   $ 9.94     $ 10.06  

Expected volatility

     88.44

%

     88.44

%

Risk-free interest rate

     2.96

%

     2.96

%

Dividend yield

     —       —  

Remaining expected term of underlying securities (years)

     5.0       5.0  
   

Second Warrants

    

Second Placement

Agent Warrants

  

Closing price per share of Common Stock

   $ 5.76     $ 5.76  

Exercise price per share

   $ 9.94     $ 10.06  

Expected volatility

     111.31

%

     111.31

%

Risk-free interest rate

     3.43

%

     3.43

%

Dividend yield

     —       —  

Remaining expected term of underlying securities (years)

     5.0       5.0  
   

Third Warrants

  

Closing price per share of Common Stock

   $ 2.77  

Exercise price per share

   $ 9.94  

Expected volatility

     114.33

%

Risk-free interest rate

     3.46

%

Dividend yield

     —  

Remaining expected term of underlying securities (years)

     5.0  
   

2022 Investor Warrants

    

2022 Placement Agent Warrants

  

Closing price per share of Common Stock

   $ 9.98     $ 9.98  

Exercise price per share

   $ 9.94     $ 10.06  

Expected volatility

     88.44

%

     88.44

%

Risk-free interest rate

     2.96

%

     2.96

%

Dividend yield

     —       —  

Remaining expected term of underlying securities (years)

     5.0       5.0