Quarterly report pursuant to Section 13 or 15(d)

Stockholder's Equity (Tables)

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Stockholder's Equity (Tables)
9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Schedule of warrants to purchase common stock activity

A summary of the Company’s warrants to purchase common stock activity is as follows:

 

      Shares Underlying Warrants     Weighted Average Exercise Price     Weighted average Remaining Contractual Life (years)     Aggregate Intrinsic Value  
Outstanding at December 31, 2017       1,340,869     $ 5.07       3.73     $  
Granted       1,245,682       5.35               110  
Outstanding at September 30, 2018       2,586,551     $ 5.20       3.76     $ 241  
Schedule of stock option activity

The following table summarizes stock option activity during the nine months ended September 30, 2018:

 

      Shares Underlying Options     Weighted Average Exercise Price     Weighted average Remaining Contractual Life (years)     Aggregate Intrinsic Value  
Outstanding at December 31, 2017       1,803,094     $ 4.41       9.19     $ 334  
Granted       252,000       4.99                  
Exercised       (15,292 )     3.31               33  
Forfeited/canceled       (75,348 )     4.60                  
Outstanding at September 30, 2018       1,964,454     $ 4.48       8.63     $ 1,279
Schedule of total non-cash stock-based compensation by operating statement classification

The following table sets forth total non-cash stock-based compensation for the issuance of common stock, options to purchase common stock, and warrants to purchase common stock by operating statement classification for the three and nine months ended September 30, 2018 and 2017:

 

    Three Months ended September 30,     Nine Months ended September 30,  
    2018     2017     2018     2017  
Research and development   $ 32     $ 110     $ 135     $ 158  
Sales and marketing     58       86       97       123  
General and administrative     572       1,100       1,503       1,613  
Total(1), (2)   $ 662     $ 1,296     $ 1,735     $ 1,894  

 

  (1) As of September 30, 2018 and 2017, the Company recorded a prepaid expense in the amount of $506 and $0 for the value of vested warrants for future services to be rendered.
  (2) As of September 30, 2018 and 2017, the Company recorded a warrant liability in the amount of $48 and $0 for the value of warrants to be issued for services provided.