Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2014

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 June 30, 2014 and 2013 consist of the following:

	June 30,
	2014		2013
Stock options		6,041,162		6,538,419
Unvested restricted common stock		295,496		454,325
Warrants		10,496,467		10,441,431
		16,833,125		17,434,175