Net Loss Per Share (Tables)

6 Months Ended

Jun. 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				Six Months Ended
	June 30,				June 30,
	2021		2020		2021		2020
Options to purchase common stock		6,845,414		5,039,344		6,439,448		4,755,974
Unvested restricted stock units		198,500		—		206,660		—