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Note 6 - Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

Risk-Free interest rate			4.20% - 4.43%
Expected dividend yield			—%
Expected stock price volatility			65.4%
Expected life of options (in years)			0.83-6.25

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

										Weighted-Average
						Weighted-Average				Remaining Contractual				Aggregate Intrinsic
		Shares				Exercise Price				Term (Years)				Value
Outstanding at December 31, 2024			5,788,597			$	2.97				5.34			$	655,578
Granted (1)			673,500				1.74
Exercised (2)			(55,000	)			1.17
Canceled (3)			(102,500	)			3.47
Outstanding at March 31, 2025			6,304,597			$	2.85				5.53			$	—
Exercisable at March 31, 2025			5,055,247			$	3.09				4.71			$	—

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

						Weighted-Average
						Grant Date
		Shares				Fair Value
Outstanding at December 31, 2024			117,925			$	1.59
Granted (1)			230,023				1.74
Vested (2)			(250,964	)			1.67
Outstanding at March 31, 2025			96,984			$	1.74

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

		Three Months Ended March 31,
		2025				2024
General and administrative		$	207,996			$	294,034
Research and development			17,034				12,444
Total		$	225,030			$	306,478

		Three Months Ended March 31,
		2025				2024
Share based compensation expense - stock option		$	177,294			$	190,269
Share based compensation expense - restricted stock units			47,736				116,209
Total		$	225,030			$	306,478

X

- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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