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Stockholders' Equity and Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Schedule of Reserved Shares of Common Stock

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

		As of March 31, 2023				As of December 31, 2022
2014 Stock Option and Grant Plan and 2021 Incentive Award Plan:
Equity plan stock options outstanding			16,169,545				16,767,752
RSUs outstanding			10,635,635				9,914,125
Shares available for future issuance			20,977,550				16,774,634
2021 Employee Stock Purchase Plan:
Shares available for future issuance			4,553,786				3,411,791
Total reserved shares			52,336,516				46,868,302

Summary of Stock Option Activity

Option activity under the Company's combined stock plans for the three months ended March 31, 2023 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, 2022			16,767,752			$	4.19				7.19			$	132,298
Granted			241,819				12.37
Exercised			(554,344	)			3.04
Cancelled/forfeited			(285,682	)			5.20
Balances as of March 31, 2023(1)			16,169,545			$	4.34				6.99			$	130,973
Exercisable as of March 31, 2023(2)			12,764,513			$	3.39				6.68			$	115,519

(1)As no forfeitures are estimated due to the Company's adoption of ASU No. 2016-09, all options are vested or expected to vest. As of March 31, 2023, no options were outstanding that were subject to a future performance condition

(2)Exercisable shares include vested options as well as unvested shares that can be early exercised

Schedule of RSU Activity

RSU activity during the three months ended March 31, 2023 was as follows:

		Restricted stock units				Weighted-average grant date fair value per share
Balance as of December 31, 2022			9,914,125			$	19.14
Granted			1,983,923				13.49
Vested			(875,055	)			20.28
Cancelled/forfeited			(387,358	)			20.35
Balance as of March 31, 2023			10,635,635			$	17.94

Schedule of Stock-based Compensation Expense

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

		Three Months Ended March 31,
		2023				2022
Cost of revenue		$	1,792			$	922
Research and development			8,579				4,284
Sales and marketing			6,368				3,240
General and administrative			3,218				5,057
Total stock-based compensation expense		$	19,957			$	13,503

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