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Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Based Compensation Expenses

Stock-based compensation is recorded in the consolidated statements of operations as follows (in thousands):

		Three months ended September 30,								Nine months ended September 30,
		2024				2023				2024				2023
Cost of goods sold		$	97			$	29			$	220			$	73
Research and development			260				230				988				747
Sales and marketing			88				(223	)			243				53
General and administrative			636				487				1,883				1,599
Total stock-based compensation expense		$	1,081			$	523			$	3,334			$	2,472

Summary of Outstanding Stock Option Activity

The following table summarizes the outstanding stock option activity during the period indicated (shares in thousands):

						Weighted average
		Number of stock options				Exercise price				Remaining contractual term (in years)			Aggregate intrinsic value (in thousands)
Balance at December 31, 2023			2,104			$	10.20				6.2		$	329
Granted			407			$	5.07
Exercised			(10	)		$	3.36						$	18
Expired/Forfeited			(46	)		$	11.87
Balance at September 30, 2024			2,455			$	9.35				6.0		$	2,900
Vested and exercisable at September 30, 2024			1,677			$	11.09				4.6		$	1,026
Vested and expected to vest at September 30, 2024			2,455			$	9.35				6.0		$	2,900

Summary of Outstanding Restricted Stock Unit Activity

The following table summarizes the Company’s restricted stock unit (RSU) activity during the period indicated (shares in thousands):

		Restricted stock units				Weighted average grant date fair value
Balance at December 31, 2023			706			$	6.97
Grants			494			$	5.19
Vested and released			(210	)		$	7.80
Forfeited			(100	)		$	6.47
Balance at September 30, 2024			890			$	5.84

Schedule of Performance Stock Unit

The following table summarizes the Company’s performance stock unit (PSU) activity during the period indicated (shares in thousands):

		Performance stock units				Weighted average grant date fair value
Balance at December 31, 2023			110			$	1.79
Grants			—			$	—
Vested and released			—			$	—
Forfeited			—			$	—
Balance at September 30, 2024			110			$	1.79

Schedule of Company's share-settled obligation RSU grants

The following table summarizes the Company’s share-settled obligation RSU grants, which immediately vested during the period indicated:

RSU grants that settled obligations (in thousands)		Three months ended September 30,								Nine months ended September 30,
		2024				2023				2024				2023
Grant date fair value		$	31.7			$	—			$	227.1			$	949.2
RSU shares granted and vested			4				—				49				187

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