Net Loss Per Share

3 Months Ended

Mar. 31, 2017

7.	Net Loss Per Share

Basic net loss per share attributable to common stockholders is computed by dividing net loss by the weighted average number of common shares outstanding during each period. Diluted net loss per common share is computed by dividing net loss available to common stockholders by the weighted average number of common shares and dilutive potential common share equivalents then outstanding, to the extent they are dilutive. Potential common shares consist of shares issuable upon the exercise of stock options and warrants (using the treasury stock method). Dilutive net loss per share is the same as basic net loss per share for all periods presented because the effects of potentially dilutive items were anti-dilutive.

	Three Months Ended March 31,
	2017			2016
Net loss (in thousands)	$	(11,422	)	$	(11,937	)
Weighted average common shares outstanding, basic and diluted		18,772,965			18,050,597
Net loss per share attributable to common stockholders	$	(0.61	)	$	(0.66	)

The Company excluded the following potentially dilutive securities, outstanding as of March 31, 2017 and 2016, from the computation of diluted net loss per share attributable to common stockholders for the three months ended March 31, 2017 and 2016 because they had an anti-dilutive impact due to the net loss attributable to common stockholders incurred for the periods.

	March 31,
	2017		2016
Stock options to purchase common stock		1,701,131		2,200,117
Warrants for the purchase of common stock		47,710		47,710
		1,748,841		2,247,827