Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2016

Net Loss per Share

Basic and diluted net loss per common share

	Three months ended				Six months ended
	June 30,				June 30,
(in thousands, except per share data)	2016		2015		2016		2015
Basic and diluted loss per share:
Net loss	$	(23,156)	$	(19,681)	$	(31,841)	$	(29,685)
Weighted-average common shares outstanding		51,445		7,026		51,124		6,971
Less:  weighted-average unvested common shares subject to repurchase		—		(1,532)		(182)		(1,578)
Weighted-average number of shares used in computing net loss per share, basic and diluted		51,445		5,494		50,942		5,393
Basic and diluted net loss per share	$	(0.46)	$	(3.58)	$	(0.63)	$	(5.50)

Potentially dilutive shares not included in the calculation of dilutive EPS

	June 30,
	2016	2015
	(in thousands)
Options to purchase common stock	9,411	9,402
Warrants to purchase common stock	377	840
Common stock subject to repurchase	—	1,499
Convertible preferred stock	—	31,397
	9,788	43,138