v3.26.3
Note 7 - Convertible Notes with Warrants (Related Party) (Tables)
9 Months Ended
Sep. 30, 2026
Notes Tables  
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]

​

​

Three Months Ended September 30,

​

​

Nine Months Ended September 30,

​

​

​

2026

​

​

2025

​

​

2026

​

​

2025

​

Beginning balance

​

$

33,186,900

​

​

$

23,764,700

​

​

$

25,014,200

​

​

$

19,869,700

​

Fair value change in convertible notes (related party)

​

​

(4,079,700

)

​

​

(1,518,100

)

​

​

4,093,000

​

​

​

2,376,900

​

Ending balance

​

$

29,107,200

​

​

$

22,246,600

​

​

$

29,107,200

​

​

$

22,246,600

​

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

​

​

December 31,

​

​

​

2025

​

Expected stock-price volatility

​

​

104.1

%

Risk-free interest rate

​

​

4.0

%

Stock price (in Australian dollars)

​

$

0.5700

​

​

​

December 31,

​

​

​

2025

​

​

​

​

​

​

Expected dividend yield

​

​

0

%

Expected stock-price volatility

​

​

59.2

%

Risk-free interest rate

​

​

3.97

%

Stock price

​

$

1.0240

​

Conversion price

​

$

0.4083

​

Securities Purchase Agreement [Member]  
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

 

 

September 30,

 

 

December 31,

 

 

 

2026

 

 

2025

 

 

 

 

 

​

 

 

 

​

Expected dividend yield

 

 

0

%

 

 

0

%

Expected stock-price volatility

 

 

54.1

%

 

 

66.0 - 72.1

%

Risk-free interest rate

 

 

4.09 - 4.23

%

 

 

3.42 - 3.43

%

Stock price

 

$

1.1022

 

 

$

1.0210

 

Conversion price

 

$

0.2563 - 0.2691

 

 

$

0.2563 - 0.2691