Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Weighted-Average Equity Instruments Excluded from Calculation of Diluted Net Loss Per Share

The following weighted-average equity instruments were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Options to purchase common stock		7,066,486		5,327,415		6,650,758		4,947,845
Unvested restricted stock units		194,435		193,474		202,540		64,962