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Note 12 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

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

		Three Months Ended June 30,								Six Months Ended June 30,
		2026				2025				2026				2025
General and administrative		$	606			$	538			$	1,125			$	1,216
Research and development			512				233				815				422
Total share-based compensation		$	1,118			$	771			$	1,940			$	1,638

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

		Shares Underlying Options				Weighted Average Exercise Price Per Share				Aggregate Intrinsic Value
Balances at December 31, 2025			6,864,854			$	4.11			$	26,479
Granted			2,029,249				6.03
Forfeitures			(464,459	)			4.25
Exercised			(181,649	)			3.06
Expired			(67,500	)			2.11
Balances at June 30, 2026			8,180,495			$	4.61			$	20,260

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

				Outstanding, Vested and Expected to Vest												Options Vested and Exercisable
Per Share Exercise Price				Shares				Weighted Average Remaining Contractual Life (Years)				Weighted Average Exercise Price				Options Exercisable				Weighted Average Remaining Contractual Life (Years)
$1.00	-	$1.99			51,443				6.6			$	1.64				48,318				6.6
$2.00	-	$2.99			2,016,923				6.4				2.75				1,537,218				6.4
$3.00	-	$3.99			223,107				3.5				3.67				206,233				3.1
$4.00	-	$4.99			2,764,219				7.1				4.33				1,229,019				5.4
$5.00	-	$5.99			2,168,536				8.3				5.72				272,101				5.5
$6.00	-	$10.00			956,267				8.4				7.24				143,792				3.1
					8,180,495				7.3			$	4.61				3,436,681				5.6

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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