Net Loss Per Share

9 Months Ended

Sep. 30, 2014

Earnings Per Share Attributable to Common Stockholders

Earnings Per Share Attributable to Common Stockholders

11.Net Loss Per Share

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2014		2013		2014		2013
Net loss	$	(13,640)	$	(4,611)	$	(38,595)	$	(17,436)
Weighted-average common shares outstanding		76,880		59,799		68,315		58,096
Net loss per share - basic and diluted	$	(0.18)	$	(0.08)	$	(0.56)	$	(0.30)

The following table presents the number of anti‑dilutive shares excluded from the calculation of diluted net loss per share at September 30, 2014 and 2013 (in thousands):

	September 30,
	2014	2013
Options to purchase common stock	26,428	16,475
Common stock warrants	3,942	5,264
Unvested restricted stock awards	720	72
Contingently redeemable shares	—	112
Total shares excluded from net loss per share	31,090	21,923