Net Loss per Share

9 Months Ended

12 Months Ended

Sep. 30, 2015

Dec. 31, 2014

Earnings Per Share [Abstract]

Net Loss per Share

12. Net Loss per Share

The following table sets forth the computation of the Company’s basic and diluted net loss per share for the periods presented (in thousands, except share and per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
	(Unaudited)
Net loss	$	(10,260	)	$	(7,569	)	$	(30,889	)	$	(24,180	)
Gain due to repurchase of Series A preferred stock		—			—			—			9
Net loss attributable to common stockholders	$	(10,260	)	$	(7,569	)	$	(30,889	)	$	(24,171	)
Weighted-average common shares used in computing net loss per share, basic and diluted		29,157,069			900,062			10,433,051			887,189
Net loss per share, basic and diluted	$	(0.35	)	$	(8.41	)	$	(2.96	)	$	(27.25	)

The following weighted-average common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
	(Unaudited)
Convertible preferred stock (if converted)		7,265,258		25,034,977		22,138,427		25,035,220
Options to purchase common stock		5,535,394		4,164,151		4,701,033		3,627,700
Stock warrants (if converted)		269,079		128,231		175,696		128,231

15. NET LOSS PER SHARE

The following table sets forth the computation of the Company’s basic and diluted net loss per share for the periods presented (in thousands, except share and per share data):

	Year Ended December 31,
	2013			2014
Net loss attributable to common stockholders	$	(28,200	)	$	(33,791	)
Weighted-average common shares used in computing net loss per share attributable to common stockholders, basic and diluted		815,340			892,315
Net loss per share attributable to common stockholders, basic and diluted	$	(34.59	)	$	(37.87	)

The following weighted-average common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:

	Year Ended December 31,
	2013		2014
Convertible preferred stock (if converted)		20,901,591		25,078,396
Options to purchase common stock		2,799,118		3,766,704
Convertible preferred stock warrant (if converted)		5,619		128,231