Note 6 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

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

	2025			2024
Weighted average risk-free interest rates		4.5	%		3.8	%
Expected dividend yield		0.0	%		0.0	%
Expected life of option (in years)		7.0			7.0
Expected volatility		179.3	%		204.2	%

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	2025		2024
Stock options:
Research and development	$	513,867	$	222,202
General and administrative		597,120		252,275
Total stock option expense		1,110,987		474,477
Stock awards:
General and administrative		4,167		54,167
Total stock-based compensation expense	$	1,115,154	$	528,644