Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Summary of Calculation of Basic and Diluted Net Loss Per Share of Common Stock

The following table summarizes the calculation of basic and diluted net loss per share of common stock:

	Year Ended December 31,
	2021			2020			2019
	(in thousands, except per share amounts)
Net loss	$	(355,928	)	$	(285,305	)	$	(130,778	)
Weighted-average number of common shares - basic and diluted		166,433			13,014			4,903
Net loss per common share - basic and diluted	$	(2.14	)	$	(21.92	)	$	(26.68	)

Anti-dilutive Securities Excluded from Calculation of Diluted Net Loss Per Share

The following securities were excluded from the computation of net loss per diluted share of common stock for periods presented as their effect would have been anti-dilutive:

	Year Ended December 31,
	2021		2020		2019
	(in thousands)
Convertible preferred stock		-		134,113		106,890
Options to purchase common stock		17,337		15,677		3,549
Unvested restricted common stock		4,365		10,079		17,140
Unvested RSUs		141		326		345
Total		21,843		160,195		127,924