Net Loss Per Share

3 Months Ended

Mar. 31, 2017

Net Loss Per Share

Net Loss Per Share

3. Net Loss Per Share

We compute net loss per common share by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period without consideration of common stock equivalents. Diluted loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common stock equivalents outstanding for the period. The treasury stock method is used to determine the dilutive effect of the Company’s stock option grants. Potentially dilutive securities consisting of stock issuable under options and our 2013 Employee Stock Purchase Plan (ESPP) are not included in the diluted net loss per common share calculation where the inclusion of such shares would have had an antidilutive effect.

Basic and diluted net loss per common share is computed as follows (in thousands except share and per share data):

	Three Months Ended
	March 31,
	2017		2016
	(in thousands, except share
	and per share data)
Numerator:
Net loss attributable to common stockholders	$	(14,635)	$	(6,398)
Denominator:
Weighted-average common shares outstanding used in computing basic and diluted net loss		46,598,797		40,626,729
Basic and diluted net loss per common share	$	(0.31)	$	(0.16)

For the three months ended March 31, 2017 and 2016 1,474,000 shares and 1,050,000 shares, respectively, of potentially dilutive securities have been excluded from the calculation of diluted net loss per common share as the effect of including such securities would have been antidilutive.