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Note 8 - Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

						Weighted average
		Number of options				exercise price
Outstanding at December 31, 2024			7,638,458			$	5.50
Granted			842,250			$	1.42
Exercised			—			$	-
Canceled and forfeited			(533,305	)		$	5.46
Outstanding at March 31, 2025			7,947,403			$	5.07

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

		2025 Grants
Strike price		1.42 -1.53
Risk-free rate			4.5	%
Expected dividend yield			—
Expected volatility			96.2% - 96.3%
Expected term (in years)			6
Grant date fair value			1.12 -1.21

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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