Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Stock-Based Compensation

Schedule of stock based compensation expense categories in statement of operations

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Sales and marketing	$	257	$	179	$	694	$	512
General and administrative		359		279		1,110		728
Research and development		117		85		1,035		246
Total stock‑based compensation	$	733	$	543	$	2,839	$	1,486

Schedule of stock option activity

				Weighted
				average
		Weighted		remaining
	Number of	average exercise		contractual term
	shares	price per share		(years)
Outstanding at January 1, 2021	1,498,208		10.87
Granted	440,600		14.96
Exercised	(54,293)		7.55
Canceled/forfeited	(175,978)		13.05
Outstanding at September 30, 2021	1,708,537	$	11.81	7.48
Vested and expected to vest at September 30, 2021	1,652,079	$	11.74	7.43
Exercisable at September 30, 2021	883,728	$	10.00	6.18

Schedule of activity relating to early exercise of stock options

	Number of
	shares
Unvested balance at January 1, 2021	182
Vested	(118)
Unvested balance at September 30, 2021	64

Schedule of weighted average assumptions

	Nine months ended
	September 30, 2021
Expected dividend yield	—
Expected volatility	63.8	%
Risk‑free interest rate	0.97	%
Expected term (in years)	6.15

Schedule of restricted stock units (RSUs)

	Number of
	shares
Outstanding at January 1, 2021	—
Granted	194,232
Vested	(12,000)
Canceled/forfeited	(18,254)
Outstanding at September 30, 2021	163,978