Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2018

Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per share data):

	Three Months Ended September 30,						Nine Months Ended September,
	2018			2017			2018			2017
Numerator:
Net loss	$	(10,812	)	$	(23,122	)	$	(37,299	)	$	(39,872	)
Denominator:
Weighted-average common shares outstanding		44,452,184			3,994,915			33,937,800			3,816,784
Less: weighted-average common shares subject to repurchase		(1,614,086	)		(2,045,657	)		(1,881,125	)		(2,117,739	)
Weighted-average common shares used to compute basic and diluted net loss per share		42,838,098			1,949,258			32,056,675			1,699,045
Net loss per share: basic and diluted	$	(0.25	)	$	(11.86	)	$	(1.16	)	$	(23.47	)

Summary of Outstanding Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss per Share

The following outstanding potentially dilutive securities were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	Nine Months Ended September 30,
	2018		2017
Convertible preferred stock		—		21,307,645
Common stock options issued and outstanding		1,348,955		505,974
Unvested restricted common stock		462,963		1,157,407
Unvested early exercised common stock options		1,050,103		888,756
Total		2,862,021		23,859,782