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Loss Per Share (Tables)
9 Months Ended
Sep. 30, 2015
Dilutive Shares Which Could Exist Pursuant to Exercise of Outstanding Stock Instruments and Which were not Included in Calculation

Dilutive shares which could exist pursuant to the exercise of outstanding stock instruments and which were not included in the calculation because their affect would have been anti-dilutive are as follows:

 

     September 30, 2015
(shares)
     September 30, 2014
(shares)
 

Warrants to purchase shares of common stock

     5,370,995         5,450,995   

Options to purchase shares of common stock

     3,342,325         3,328,517   

Unvested shares of restricted common stock

     337,935         —    

Shares of common stock issuable upon conversion of preferred stock

     2,522,936         2,527,103   
  

 

 

    

 

 

 
     11,574,191         11,306,615