Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Potentially Antidilutive Shares Excluded from the Calculation of Diluted Net Loss Per Share

The following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share for the periods presented due to their anti-dilutive effect:

	As of March 31,
	2020	2019
Convertible preferred stock on an as-converted basis	—	16,262,425
Stock options to purchase common stock	3,061,521	1,461,191
Early exercised options subject to future vesting	613,627	578,298
Restricted stock subject to future vesting	198,992	344,657
ESPP shares subject to future issuance	11,392	—
Total	3,885,532	18,646,571