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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 March 31,
		2024				2023
Cost of goods sold		$	58			$	15
Research and development			328				237
Sales and marketing			80				161
General and administrative			580				568
Total stock-based compensation expense		$	1,046			$	981

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			403			$	5.07
Exercised			—			$	—						$	—
Expired/Forfeited			(13	)		$	6.80
Balance at March 31, 2024			2,494			$	9.39				6.6		$	1,051
Vested and exercisable at March 31, 2024			1,609			$	11.05				5.2		$	552
Vested and expected to vest at March 31, 2024			2,494			$	9.39				6.6		$	1,051

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			467			$	5.14
Vested and released			(169	)		$	7.79
Forfeited			(34	)		$	5.65
Balance at March 31, 2024			970			$	6.00

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 March 31, 2024			110			$	1.79

Schedule of Accrued Expense Liability and Stock-Based Compensation Expense.

When incurred, share-settled obligation that will be paid in restricted stock units are recorded as accrued expense liability and stock-based compensation expense.

RSU Grants that settled Obligations (in thousands)		Three months ended March 31,
		2024				2023
Amount		$	124			$	949
Shares			31				187

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