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Share Based Compensation (Tables)
3 Months Ended
Mar. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation

All stock-based compensation is included in operating expenses for the periods as follows:

 

    Three Months Ended  
    March 31,  
    2019     2018  
Compensation cost recognized:                
Selling, general & administrative   $ 366,523     $ 54,434  
Research & development     3,216       6,274  
    $ 369,739     $ 60,708  

Schedule of Stock Option Activity

Stock option activity under the 2006 and 2015 Stock Option Plans (collectively, the “Plans”) during the periods indicated below were as follows:

 

    Number of Shares Subject to Issuance     Weighted-average Exercise Price     Weighted-average Remaining Contractual Term   Aggregate Intrinsic Value  
                       
Outstanding at December 31, 2018     1,072,332     $ 1.44     1.85 years   $ 881,493  
                             
Granted     444,163       2.68              
Forfeited or expired     -                      
Exercised     -                      
Outstanding at March 31, 2019     1,516,495     $ 1.80     2.58 years   $ 2,632,195  
                             
Exercisable at March 31, 2019     1,146,914     $ 1.54     1.97 years   $ 2,296,731  

Schedule of Restricted Stock Units Outstanding

The compensation expense incurred by the Company for RSUs is based on the closing market price of the Company’s common stock on the date of grant and is amortized ratably on a straight-line basis over the requisite service period and charged to general and administrative expense with a corresponding increase to additional paid-in capital.

 

    Number of
Shares
    Weighted
Average
Grant Date
Fair Value
    Aggregate
Intrinsic
Value
 
                   
Outstanding at December 31, 2018     -     $ -     $ -  
Granted     2,000       3.53          
Vested and settled in shares     -       -          
                         
Outstanding at March 31, 2019     2,000     $ 3.53     $ -