Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Stock-Based Compensation

Summary of stock options outstanding, exercisable and vested or expected to vest

				Weighted-
				Average
		Weighted-		Remaining		Aggregate
		Average		Contractual		Intrinsic
		Exercise		Term		Value
	Number of Shares	Price		(years)		(in thousands)
Outstanding, December 31, 2021	1,386,811	$	13.28		7.8	$	179
Granted	499,130	$	5.08
Exercised	—	$	—
Forfeited	(28,850)	$	12.26
Outstanding, March 31, 2022	1,857,091	$	11.10		8.2	$	524
Vested and exercisable, March 31, 2022	477,322	$	11.04		5.7	$	87

Schedule of RSU activity

	Number of	Weighted-
	Shares	Average
	Underlying	Grant Date
	RSUs	Fair Value
Unvested, December 31, 2021	235,985	$	15.98
Granted	356,349	$	3.58
Vested	(19,247)	$	14.53
Forfeited	(8,928)	$	8.66
Unvested, March 31, 2022	564,159	$	8.31

Schedule of stock-based compensation expense recognized

Stock-based compensation expense recognized during the three months ended March 31, 2022 and 2021 was comprised of the following (in thousands):

	Three Months Ended
	March 31,
	2022		2021
Sales and marketing	$	195	$	128
General and administrative		682		411
Research and development		178		109
Cost of goods sold		50		29
Total stock-based compensation expense	$	1,105	$	677

Summary of weighted-average assumptions were used to determine the fair value of options

	Three Months Ended
	March 31,
	2022		2021
Expected term (years)	6.2		6.1
Risk-free interest rate	1.8	%	1.0	%
Volatility factor	64	%	64	%
Dividend yield	—		—