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Common Stock (Tables)
9 Months Ended
Sep. 30, 2016
Common Stock Tables  
Summary of warrants outstanding

The following table summarizes information about warrants outstanding at September 30, 2016:

 

   

Shares of

Common Stock

    Exercise Price    

Expiration

Date

 
Series A     960,000     $ 0.35     July 12, 2019  
Series B     1,326,087     $ 0.46     November 29, 2018  
Series C     3,500,000     $ 0.49     November 29, 2018  
Series D     1,010,000     $ 1.10     June 5, 2020  
Series E     584,416     $ 1.13     September 8, 2021  
Outstanding as of September 30, 2016     7,380,503