Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

Stock option activity for the nine months ended September 30, 2022 is as follows:

	Number of Shares Underlying Outstanding Options	Weighted- Average Exercise Price per Share		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding—December 31, 2021	24,129,096	$	1.01	8.60	$	100,992
Options exercised	(1,753,708)	0.20
Options cancelled	(857,212)	2.85
Outstanding—September 30, 2022	21,518,176	$	1.01	7.92	$	9,866
Vested and expected to vest—September 30, 2022	21,518,176	$	1.01	7.92	$	9,866
Exercisable—September 30, 2022	11,545,615	$	0.89	7.86	$	5,669

Schedule of Stock Options Outstanding and Exercisable

The following table summarizes information about stock options outstanding and exercisable at September 30, 2022.

		Options Outstanding				Options Exercisable
Exercise Price		Options Outstanding	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Options Exercisable	Weighted Average Exercise Price
$	0.18	4,088,911	7.73	$	0.18	3,027,603	$	0.18
$	0.21	8,909,207	7.98	$	0.21	4,415,060	$	0.21
$	1.42	7,524,114	8.00	$	1.42	3,605,304	$	1.42
$	1.49	34,036	0.18	$	1.49	34,036	$	1.49
$	5.24	316,111	6.25	$	5.24	234,893	$	5.24
$	10.26	645,797	8.60	$	10.26	228,719	$	10.26
		21,518,176				11,545,615

Schedule of Nonvested Restricted Stock Units Activity

A summary of RSU activity is as follows:

	Number of Shares	Weighted Average Grant Date Fair Value (per share)
Unvested—December 31, 2021	9,326,572	$	7.82
Granted during the year	14,701,880	2.86
Canceled during the year	(2,887,605)	5.95
Vested during the year	(2,754,926)	7.22
Unvested—September 30, 2022	18,385,921	$	4.24

Schedule of Stock-based Compensation

The Company recognized stock-based compensation expense for all stock options in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of product revenue	$	207	$	206	$	570	$	457
Research and development	3,681		2,063		11,248		4,305
Sales and marketing	1,913		1,717		5,276		2,702
General and administrative	2,654		3,161		8,230		11,093
Total stock-based compensation	$	8,455	$	7,147	$	25,324	$	18,557

The following table summarizes stock-based compensation expense by award type (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
RSUs	$	6,313	$	4,892	$	18,460	$	8,824
Stock Options	2,099		2,251		6,807		9,718
Employee stock purchase plan	43		—		43		—
RSAs	—		4		14		15
Total stock-based compensation	$	8,455	$	7,147	$	25,324	$	18,557