v3.25.4
Note 8 - Stockholders' Equity (Tables)
3 Months Ended
Dec. 31, 2025
Notes Tables  
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
  

Three Months Ended December 31,

 
  

2025

  

2024

 

Operating expenses

 $78   107 
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Type

 

Issue Date

 

Shares

  

Price

 

Expiration

Placement Agent

 

2/4/2021

  31,564  $3.88 

2/4/2026

Investors

 

5/14/2021

  592,106  $2.51 

11/16/2026

Placement Agent

 

5/14/2021

  166,536  $2.85 

5/12/2026

Placement Agent

 

3/26/2025

  70,000  $1.88 

3/24/2030

     860,206      
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
  

Stock Options

  

Stock Warrants

 
  

Awards

  

Weighted Average Exercise Price

  

Warrants

  

Weighted Average Exercise Price

 

Outstanding, September 30, 2025

  1,988,677  $1.99   861,533  $2.77 

Granted

  -   -   -   - 

Exercised or redeemed

  (1,000)  0.81   -   - 

Forfeited

  -   -   -   - 

Expired

  (25,000)  1.79   (1,327)  132.50 

Outstanding, December 31, 2025

  1,962,677  $2.00   860,206  $2.42 

Options vested and exercisable, December 31, 2025

  1,603,505  $2.19         
Schedule of Nonvested Share Activity [Table Text Block]
      

Weighted Average

 
      

Grant-Date

 
  

Shares

  

Fair Value

 

Unvested at October 1, 2025

  191,210  $1.40 

Granted

  -   - 

Vested

  (16,530)  1.40 

Cancelled/Forfeited

  -   - 

Unvested at December 31, 2025

  174,680  $1.40