Note 5 - Debt and Warrants Transactions (Tables)

9 Months Ended

Sep. 30, 2026

Notes Tables

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

Notes Warrants	September 30, 2026			December 31, 2025
Common stock market price	$	2.66		$	2.70
Risk-free interest rate		4.4	%		3.5	%
Expected dividend yield		—			—
Expected term (in years)		0.86			1.61
Expected volatility		83.1	%		119.9	%

Additional Warrants	September 30, 2026			December 31, 2025
Common stock market price	$	2.66		$	2.70
Risk-free interest rate		4.4	%		3.5	%
Expected dividend yield		—			—
Expected term (in years)		1.37			2.12
Expected volatility		81.3	%		116.0	%