Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Tables)

v3.19.1
STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of stock option activity

A summary of the stock option activity and related information for the Plans for the three months ended March 31, 2019 is as follows:

 

    Shares     Weighted-Average
Exercise Price
    Weighted-Average
Remaining
Contractual Term
   

Aggregate 

Intrinsic
Value

 
Outstanding at January 1, 2019     137,145     $ 143.09       8.14     $  
Grants     113,400     $ 2.06                  
Exercised                              
Forfeitures or expirations     (2,201 )   $ 35.42                  
                                 
Outstanding at March 31, 2019     248,344     $ 79.65       8.69     $ 39,829  
Vested and expected to vest at March 31, 2019     248,344     $ 79.65       8.69     $ 39,829  
Exercisable at March 31, 2019     70,581     $ 229.28       6.54     $  
Schedule of fair value assumptions of stock options granted

The assumptions used in the valuation of stock options granted during the three months ended March 31, 2019 and 2018 were as follows:

 

    Three Months Ended
March 31, 2019
    Three Months Ended
March 31, 2018
 
Risk-free interest rate     2.48% to 2.54%       2.54% to 2.79%  
Expected term of option     3.00 to 6.00 years       4.50 to 7.00 years  
Expected stock price volatility     109.71%       101.74% to 102.00%  
Expected dividend yield     0.0       0.0