Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Stockholders' Equity Note [Abstract]

Common Stock Reserved for Future Issuance

The Company has reserved the following shares of common stock for future issuance:

	June 30, 2022		December 31, 2021
2014 Stock Plan:
Options outstanding		51,899,378		61,903,883
Restricted stock units outstanding		2,864,365		3,495,540
2021 Equity Incentive Plan:
Options outstanding		22,500		22,500
Restricted stock units outstanding		14,302,853		2,938,968
Remaining shares available for future issuance		36,782,187		32,797,245
2021 Employee Stock Purchase Plan		7,145,776		5,162,575
Total		113,017,059		106,320,711

Summary of Stock Equity Award Activity

The following table summarizes stock equity award activity and activity regarding shares available for grant under the 2014 Plan and the 2021 Plan:

				Equity Awards Outstanding
	Shares Available for Grant			Outstanding Stock Options			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Balance as of January 1, 2022		32,797,245			61,926,383		$	6.97		7.88	$	4,289,643
Increase in authorized shares		13,590,094			-		$	-
Stock options exercised		-			(7,695,923	)	$	3.31
Stock options forfeited or expired		2,308,582			(2,308,582	)	$	8.52
Repurchases of unvested common stock		130,845			-		$	-
RSUs granted		(12,688,748	)		-		$	-
RSUs forfeited or cancelled		644,169			-		$	-
Balance as of June 30, 2022		36,782,187			51,921,878		$	7.44		7.53	$	820,908
Vested as of June 30, 2022					24,848,276		$	5.31		6.99	$	445,825
Vested and expected to vest as of June 30, 2022					51,921,878		$	7.44		7.53	$	820,908

Schedule of Restricted Stock Unit Activity

The following table summarizes RSU activity under the 2014 Plan and the 2021 Plan:

	RSUs Outstanding
	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested balance as of January 1, 2022		6,434,508		$	46.01
RSUs granted		12,688,748		$	34.80
RSUs vested		(1,311,869	)	$	44.21
RSUs forfeited or cancelled		(644,169	)	$	44.72
Unvested balance as of June 30, 2022		17,167,218		$	37.89

Summary of Stock-Based Compensation Expense

Total stock-based compensation expense was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenue - subscription	$	6,018	$	2,172	$	11,331	$	3,147
Cost of revenue - services		2,328		1,055		4,190		1,599
Research and development		25,337		8,932		45,422		12,443
Sales and marketing		24,746		11,155		45,808		16,131
General and administrative		10,437		11,202		19,484		14,549
Stock-based compensation, net of amounts capitalized	$	68,866	$	34,516	$	126,235	$	47,869
Capitalized stock-based compensation		1,598		396		3,125		494
Total stock-based compensation	$	70,464	$	34,912	$	129,360	$	48,363