Stockholders' Equity (Deficit) and Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Schedule of Reserved Shares of Common Stock

The Company has reserved shares of its common stock as follows:

	As of June 30, 2022		As of December 31, 2021
2014 Stock Option and Grant Plan and 2021 Incentive Award Plan:
Equity plan stock options outstanding		17,620,837		21,214,155
RSUs outstanding		6,475,393		1,716,614
Shares available for future issuance		21,090,767		19,005,008
2021 Employee Stock Purchase Plan:
Shares available for future issuance		3,585,845		2,663,371
Total reserved shares		48,772,842		44,599,148

Summary of Stock Option Activity

Option activity under the Company's combined stock plans for the six months ended June 30, 2022 is set forth below:

						Weighted
				Weighted		average		Aggregate
	Outstanding			average		remaining		intrinsic
	stock			exercise		contractual		value
	options			price		life (years)		(in thousands)
Balances as of December 31, 2021		21,214,155		$	4.15		8.12	$	1,035,039
Granted		183,630			15.63
Exercised		(1,932,702	)		2.67
Cancelled/forfeited		(1,844,246	)		9.20
Balances as of June 30, 2022(1)		17,620,837		$	3.91		7.64	$	182,904
Exercisable as of June 30, 2022(2)		12,542,495		$	3.11		7.31	$	140,225

Schedule of RSU Activity

RSU activity during the six months ended June 30, 2022 was as follows:

	Restricted stock units			Weighted-average grant date fair value per share
Balance as of December 31, 2021		1,716,614		$	38.40
Granted		5,493,481			19.53
Vested		(316,652	)		21.75
Cancelled/forfeited		(418,050	)		35.87
Balance as of June 30, 2022		6,475,393		$	23.37

Schedule of Stock-based Compensation Expense

Stock-based compensation expense, net of actual forfeitures is reflected in the condensed consolidated statement of operations (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenue	$	1,669	$	247	$	2,592	$	483
Research and development		7,383		1,154		11,667		2,063
Sales and marketing		3,206		866		6,445		1,689
General and administrative		2,578		752		7,635		1,361
Total stock-based compensation expense	$	14,836	$	3,019	$	28,339	$	5,596