Net Loss Per Share

6 Months Ended

Jun. 30, 2015

11.Net Loss Per Share

Basic net loss per share is calculated by dividing net loss by the weighted average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the dilutive net loss per share calculation, preferred stock, stock options, warrants to purchase Common Stock and warrants to purchase preferred stock are considered to be common stock equivalents but are excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive; therefore, basic and diluted net loss per share were the same for all periods presented.

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

	Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014
Convertible preferred stock	—	8,012,987	—	8,012,987
Stock options	1,534,201	1,209,072	1,534,201	1,209,072
Common stock warrants	59,405	34,839	59,405	34,839

	1,593,606	9,256,898	1,593,606	9,256,898