Net Loss Per Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

9. Net Loss Per Share

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

	Three Months Ended March 31,
	2019		2018
	(in thousands)
Convertible preferred stock on an as-converted basis		—		17,562,214
Common stock options issued and outstanding		3,960,505		3,121,530
Early exercised options subject to future vesting		5,328		41,240
Convertible preferred stock warrants		—		94,345
Common stock warrants		89,343		176,218
Total		4,055,176		20,995,547