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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Summary of Time-Based RSUs Activity

			Weighted average
	Number		grant date
	of shares		fair value
Outstanding at December 31, 2021	7,392		$	19.78
Granted	3,650			11.36
Vested	(1,845)			14.69
Forfeited	(322)			22.50
Outstanding at March 31, 2022	8,875		$	17.28

Schedule of Stock-Based Compensation Expense

	Three Months Ended March 31,
	2022			2021
Cost of revenue	$	1,758		$	992
Research and development		8,965			3,048
Sales, general and administrative		11,980			6,125
Total stock-based compensation expense	$	22,703		$	10,165

Schedule of Fair Value of Employee Stock Purchase Plan

		Three Months Ended March 31,
		2022			2021
Expected term in years			0.5 - 2.0			0.5 - 2.0
Expected volatility			70%			68%
Risk-free interest rate			0.60% - 1.31%			0.07% - 0.13%
Dividend yield			—			—
Weighted average grant date fair value per share		$	5.42		$	29.26

Time-based stock options [Member]

Summary of Stock Option Activity

		Stock Options Outstanding
							Weighted
		Number					average
		of shares		Exercise price			exercise price
Outstanding at December 31, 2021		12,159		$	1.16 – 46.37		$	11.38
Granted		3,798			10.18 – 16.58			11.76
Exercised		(178)			1.16 – 8.90			3.38
Canceled		(232)			2.47 – 46.37			27.74
Outstanding at March 31, 2022		15,547		$	1.16 – 46.37		$	11.32

Performance-based stock options [Member]

Summary of Stock Option Activity

		Stock Options Outstanding
							Weighted
		Number					average
		of shares		Exercise price			exercise price
Outstanding at December 31, 2021		304		$	4.71 - 4.90		$	4.71
Granted		—			—			—
Exercised		—			—			—
Canceled		—			—			—
Outstanding at March 31, 2022		304		$	4.71 - 4.90		$	4.71

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