Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 2015

Potential Dilutive Shares Excluded from Computation of Diluted Net Loss Per Share

The Company’s potential dilutive shares, which include outstanding common stock options, unvested restricted stock and warrants, have not been included in the computation of diluted net loss per share for any of the periods presented as the result would be anti-dilutive. Such potential shares of common stock at March 31, 2015 and 2014 consist of the following:

	March 31,
	2015		2014
Stock options		5,924,297		6,159,828
Unvested restricted common stock		96,073		296,406
Warrants		—		10,539,767
		6,020,370		16,996,001