Stock-Based Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2022

Share-based Payment Arrangement [Abstract]

Summary of Share-Based Payment Arrangement, Option, Activity

The following table summarizes the stock option activity for the six months ended June 30, 2022:

	Options outstanding
	Number of shares			Weighted average exercise price per share		Weighted average contractual term (in years)		Aggregate intrinsic value (in thousands)
Outstanding - December 31, 2021		3,954,639		$	6.92			$	15,398
Options granted		—			—
Options exercised		(197,875	)		0.30
Options cancelled		(62,402	)		9.59
Options expired		—			—
Outstanding at June 30, 2022		3,694,362		$	7.23		4.76	$	73
Vested and exercisable - June 30, 2022		3,383,237		$	6.72		4.53	$	73
Vested and expected to vest - June 30, 2022		3,694,362		$	7.23		4.76	$	73

Summary of Share-Based Payment Arrangement, Restricted Stock And Restricted Stock Unit, Activity

The following table summarizes the restricted stock unit activity for the six months ended June 30, 2022:

	Restricted Stock Units (“RSUs”)
	Number of shares			Weighted average grant date fair value
Outstanding as of December 31, 2021		11,302,697		$	6.88
Granted		5,577,949			1.50
Vested		(7,876,591	)		6.47
Forfeited or cancelled		(270,654	)		6.81
Outstanding as of June 30, 2022		8,733,401		$	3.81

Summary of Share-Based Payment Arrangement, Expensed And Capitalized, Amount

The following table summarizes stock-based compensation expense and its allocation within the accompanying condensed consolidated statements of operations for the three and six months ended June 2022 and 2021, respectively (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of goods sold	$	154	$	21	$	837	$	41
Research and development		1,464		455		9,141		896
Sales and marketing		1,244		230		5,842		442
General and administrative		2,389		5,019		40,992		5,927
Total stock-based compensation expense	$	5,251	$	5,725	$	56,812	$	7,306