Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.10.0.1
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock Option Activity

The following represents a summary of the options granted to employees and non-employees that are outstanding at June 30, 2018 and changes during the period then ended:

 

    Options     Weighted Average Exercise Price     Aggregate
Intrinsic Value
    Weighted Average
Remaining
Contractual
Life (in years)
 
Outstanding at December 31, 2017     254,171     $ 47.43     $ -       7.3  
Granted     456,718     $ 3.16     $ -       9.5  
Exercised/ Expired/ Forfeited     (14,204 )   $ 4.71     $ -       -  
Outstanding at June 30, 2018     696,685     $ 19.28     $ -       8.7  
Exercisable at June 30, 2018     223,228     $ 56.75     $ -       6.9  

Schedule of Assumptions Used in Black-Scholes Option-pricing Method

The material factors incorporated in the Black-Scholes model in estimating the fair value of the options granted for the periods presented were as follows (adjusted for 1-for-10 reverse stock split):

 

    For the three months ended June 30,   For the six months ended June 30,
    2018   2017   2018   2017
Expected dividend yield   0.00%   0.00%   0.00%   0.00%
Expected stock-price volatility   46.47% - 50.34%   53.68% - 53.90%   46.47% - 53.11%   53.68% - 55.4%
Risk-free interest rate   2.75% - 3.02%   1.98% - 2.37%   2.46% - 3.02%   1.94% - 2.40%
Expected average term of options   5 - 7   10   5 - 7   10
Stock price   $2.73 - $3.32   $5.50 - $10.80   $2.73 - $3.40   $5.50 - $34.00