Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Weighted Average Grant Fair Value of Stock Options using Black-Scholes Option-pricing Model

The following table presents, on a weighted average basis, the assumptions used in the Black-Scholes option-pricing model to determine the grant-date fair value of stock options granted during the six months ended June 30, 2022:

Risk-free interest rate	2.5	%
Expected term (in years)	6.0
Expected volatility	77.0	%
Expected dividend yield	0	%

Schedule of Stock Option Activity

The following table summarizes option activity with service conditions under the 2021 Plan and the 2017 Plan:

	Options			Weighted average exercise price		Weighted average contract term (years)		Aggregate intrinsic value
Balance at January 1, 2022		24,064,586		$	4.23		7.4	$	56,525
Granted		2,435,662		$	9.18
Exercised		(619,784	)	$	0.57
Forfeited		(232,106	)	$	6.30
Outstanding at June 30, 2022		25,648,358		$	4.77	6.58		$	28,099
Vested and expected to vest June 30, 2022		25,648,358		$	4.77	6.58		$	28,099
Exercisable at June 30, 2022		19,756,174		$	3.66		5.80	$	28,099

Schedule of Activity Related to RSU Stock-Based Payment Awards

The following table summarizes activity related to RSU stock-based payment awards:

	Number of shares			Weighted average grant date fair value
Outstanding at December 31, 2021		474,700		$	7.20
Granted		1,710,123		$	8.88
Forfeited		(36,047	)	$	7.67
Outstanding at June 30, 2022		2,148,776		$	8.53

Schedule of Stock-based Compensation Expense

The Company recorded stock-based compensation expense in the following expense categories of its condensed consolidated statements of operations:

	Three months ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenue	$	131	$	16	$	168	$	32
Research and development		741		7,316		989		7,663
Selling, general and administrative		3,657		20,856		5,794		21,502
	$	4,529	$	28,188	$	6,951	$	29,197