Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2019

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 30,
	2019			2018			2019			2018
Numerator:
Net loss	$	(22,352	)	$	(10,812	)	$	(68,112	)	$	(37,299	)
Denominator:
Weighted-average common shares outstanding		45,787,137			44,452,184			45,253,176			33,937,800
Less: weighted-average common shares subject to vesting		(1,847,856	)		(1,614,086	)		(1,503,022	)		(1,881,125	)
Weighted-average common shares used to compute basic and diluted net loss per share		43,939,281			42,838,098			43,750,154			32,056,675
Net loss per share: basic and diluted	$	(0.51	)	$	(0.25	)	$	(1.56	)	$	(1.16	)

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,
	2019		2018
Common stock options issued and outstanding		4,274,163		1,348,955
Unvested restricted common stock		1,257,651		462,963
Unvested early exercised common stock options		552,364		1,050,103
Total		6,084,178		2,862,021