Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Shares of Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share

The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:

	Year Ended December 31,
	2021	2020	2019
Stock options to purchase common stock	8,212,754	11,860,844	15,918,243
Shares subject to repurchase	18,750	68,750	138,250
Restricted stock units	1,298,244	823,947	—
Contingent restricted shares	—	236,484	—
Shares committed under ESPP	13,368	10,939	56,159
Total	9,543,116	13,000,964	16,112,652