Net Loss Per Share Attributable to Common Stockholders

6 Months Ended

Jun. 30, 2015

Net Loss Per Share Attributable to Common Stockholders

Net Loss Per Share Attributable to Common Stockholders

12. Net Loss Per Share Attributable to Common Stockholders

Basic net loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing net loss by the weighted-average number of common shares and common share equivalents outstanding for the period. Common stock equivalents are only included when their effect is dilutive. For all periods presented, there is no difference in the number of shares used to compute basic and diluted shares outstanding due to the Company’s net loss position.

The following outstanding shares of common stock equivalents have been excluded from diluted net loss per common share for the six months ended June 30, 2015 and 2014 because their inclusion would be anti-dilutive:

	Six Months Ended June 30,
	2015	2014
Shares of common stock issuable upon conversion of preferred stock	—	2,010,596
Shares of common stock subject to outstanding options and restricted stock units	870,720	832,407
Warrants to purchase common stock	605,872	224,330
Total shares of common stock equivalents	1,476,592	3,067,333