Registration of securities issued in business combination transactions

Stock-Based Compensation (Tables)

v3.20.1
Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity

The following represents a summary of the options granted to employees and non-employees that are outstanding at December 31, 2019 and changes during the period then ended:

 

    Number of Shares     Weighted- Average Exercise Price     Aggregate Intrinsic Value     Weighted- Average Remaining Contractual Life (in years)  
Outstanding at December 31, 2018     673,885     $ 19.82     $       8.2  
Options granted     698,750       0.62             8.6  
Options forfeited     (207,991 )     27.50              
Outstanding at December 31, 2019     1,164,644       6.93             8.4  
Exercisable at December 31, 2019     481,883     $ 20.54     $             ―       7.8  

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 year ended December 31,  
    2019     2018  
Expected dividend yield     0.00 %     0.00 %
Expected stock-price volatility     46.33% - 69.38 %     46.47% - 53.11 %
Risk-free interest rate     1.47% - 2.60 %     2.46% - 3.07 %
Term of options     5 - 7       5 - 10  
Stock price   $ 0.60 - $1.04     $ 1.85 - $3.40