Net Loss Per Share Attributable to Common Stockholders

3 Months Ended

Mar. 31, 2014

Net Loss Per Share Attributable to Common Stockholders

Net Loss Per Share Attributable to Common Stockholders

5.Net Loss Per Share Attributable to Common Stockholders

The Company uses the two-class method to compute net loss per share because the Company has issued securities other than common stock that contractually entitle the holders to participate in dividends and earnings of the Company. The two-class method requires earnings for the period to be allocated between common stock and participating securities based upon their respective rights to receive distributed and undistributed earnings. The holders of restricted common stock issued in the Condaptive acquisition are entitled to participate in distributions, if and when declared by the board of directors, that are made to common stockholders and as a result are considered participating securities.

Under the two-class method, for periods with net income, basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Net income attributable to common stockholders is computed by subtracting from net income the portion of current year earnings that the participating securities would have been entitled to receive pursuant to their dividend rights had all of the year’s earnings been distributed. No such adjustment to earnings is made during periods with a net loss, as the holders of the participating securities have no obligation to fund losses. Diluted net loss per common share is computed under the two-class method by using the weighted-average number of shares of common stock outstanding, plus, for periods with net income attributable to common stockholders, the potential dilutive effects of stock options, warrants, unvested restricted common stock awards, and RSUs. In addition, the Company analyzes the potential dilutive effect of the outstanding participating securities under the “if-converted” method when calculating diluted earnings per share, in which it is assumed that the outstanding participating securities convert into common stock at the beginning of the period. The Company reports the more dilutive of the approaches (two-class or “if-converted”) as its diluted net income per share during the period. Due to net losses for the three-month periods ended March 31, 2014 and 2013, basic and diluted loss per share were the same, as the effect of potentially dilutive securities would have been anti-dilutive.

The following securities have been excluded from the calculation of weighted average common shares outstanding because the effect is anti-dilutive:

	Three months ended March 31,
	2014	2013
Unvested restricted common stock	63,668	353,379
Stock options	8,121,589	5,876,486
RSUs	1,935,026	382,004