Net Loss Per Share

6 Months Ended

Jun. 30, 2016

(2) Net Loss Per Share

The Company calculates basic earnings per share by dividing loss attributable to common stockholders by the weighted average common shares outstanding during the period, excluding common stock subject to vesting provisions. Diluted earnings per share is computed by dividing loss attributable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include stock options, restricted stock units and warrants for common stock.

Because we reported a net loss for the three and six months ended June 30, 2016 and 2015, all potentially dilutive shares of common stock have been excluded from the computation of the dilutive net loss per share for all periods presented. Such potentially dilutive shares of common stock consist of the following:

	June 30,
	2016		2015
Potentially dilutive securities, excluded:
Outstanding stock options		584,865		171,225
Unvested restricted stock units		46,757		89,896
Warrants to purchase common stock		3,718,022		3,739,948
		4,349,644		4,001,069