Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Stock-Based Compensation

Summary of compensation costs related to stock-based awards

The following table summarizes compensation costs related to our stock-based awards (in thousands, except per share data):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2024		2023		2024		2023
Cost of revenue	$	68	$	103	$	173	$	208
Selling, general and administrative		526		655		1,079		1,287
Research and development		121		154		272		332
Net effect on net loss	$	715	$	912	$	1,524	$	1,827

Summary of stock option activity

The following table summarizes the stock option transactions during the six months ended June 30, 2024 (in thousands, except per share data):

				Weighted-
				average
		Weighted-		Remaining
	Number of	average		Contractual	Aggregate
	Options	Exercise		Life	Intrinsic
Stock Options	Outstanding	Price		(in years)	Value
Balance as of January 1, 2024	1,198	$	5.10	4.09	$	14
Granted	—		—
Exercised	(11)		2.22
Canceled and expired	—		—
Balance as of June 30, 2024	1,187	$	5.13	3.63	$	189
Options vested as of June 30, 2024 and unvested options expected to vest, net of forfeitures	1,187	$	5.13	3.63	$	189
Options exercisable as of June 30, 2024	1,187	$	5.13	3.63	$	189

Summary of restricted stock awards activity

A summary of activity related to restricted stock awards for the six months ended June 30, 2024 is presented below (in thousands, except per share data):

		Weighted-Average
		Grant Date
Stock Awards	Shares	Share Value
Non-vested as of January 1, 2024	1,220	$	3.75
Granted	85	$	3.47
Vested	(165)	$	5.05
Forfeited	(4)	$	3.20
Non-vested as of June 30, 2024	1,136	$	3.54

Summary of unvested at-risk performance shares

A summary of the status of our unvested at-risk, performance shares as of June 30, 2024 is presented below (in thousands, except per share data):

		Weighted-Average
		Grant Date
Stock Awards	Shares	Share Value
Non-vested as of January 1, 2024	38	$	15.37
Granted (1)	151	$	2.28
Vested	—	$	—
Forfeited	—	$	—
Non-vested as of June 30, 2024	189	$	4.91

(1) The number of shares presented is based on achieving 100% of the targeted financial performance metric as defined in the at-risk, performance shares agreement.