Quarterly report pursuant to Section 13 or 15(d)

Stock-based Activity (Tables)

v3.10.0.1
Stock-based Activity (Tables)
9 Months Ended
Sep. 30, 2018
Stock-based Activity Tables  
Valuation Assumptions
   

Three Months Ended

September 30,

   

Nine Months Ended

September 30,

 
    2018     2017     2018     2017  
Risk-free interest rate     -       -       2.4 %   1.5 to 2.0
Dividend yield     -       -       0 %     0 %
Expected volatility     -       -       87 %   73 to 85
Expected life of options, in years     -       -       5.5 yrs.     1.4 to 6.0 yrs.  
Weighted-average grant date fair value     -       -     $ 1.42     $ 1.53  
Stock-based Compensation
    Three Months Ended     Three Months Ended     Nine Months Ended     Nine Months Ended  
    September 30,     September 30,     September 30,     September 30,  
    2018     2017     2018     2017  
Research and development   $ 96,157     $ 292,523     $ 340,979     $ 989,884  
General and administrative     172,458       721,213       966,183       3,526,488  
Total stock-based compensation expense   $ 268,615     $ 1,013,736     $ 1,307,162     $ 4,516,372  
Stock-based Award Activity
   

Options

Outstanding

   

Weighted-Average

Exercise Price

 
Outstanding at December 31, 2017     953,937     $ 13.97  
Granted     1,186,000       1.99  
Exercised            
Forfeited/cancelled/expired     (319,348 )     6.71  
Outstanding and expected to vest at September 30, 2018     1,820,589     $ 7.44  
Vested and exercisable at September 30, 2018     1,060,093     $ 10.24  
Restricted stock grants
    Shares    

Weighted Average

Grant-Date

Fair Value

 
Non-vested at December 31, 2017     832,226     $ 3.88  
Granted            
Vested     (832,226 )     50.26  
Forfeited            
Non-vested at September 30, 2018         $  
Common stock reserved for future issuance
Common stock reserved for conversion of preferred stock     7,869,862  
Warrants to purchase common stock     1,221,935  
Common stock options outstanding     1,820,589  
Authorized for future grant or issuance under the Stock Plan     646,059  
      Total     11,558,445