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STOCK OPTIONS, RESTRICTED STOCK AND WARRANTS (Details 3)
9 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Number of Shares  
Balance at beginning | shares 445,252
Granted | shares 3,787,991
Cancelled/Forfeited | shares (454,000)
Balance at ending | shares 3,779,243
Exercisable at ending | shares 3,605,330
Weighted Average Exercise Price  
Balance at beginning | $ / shares $ 15.39
Granted | $ / shares 4.97
Cancelled/Forfeited | $ / shares 7.50
Balance at ending | $ / shares 5.89
Exercisable at ending | $ / shares $ 5.93
Weighted - Average Remaining Contractual Term  
Balance at ending 4 years 1 month 6 days
Exercisable at ending 4 years 3 months 18 days
Aggregate Intrinsic Value:  
Exercisable at ending | $ [1]
[1] The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying warrants and the closing stock price of $3.22 for our common stock on September 30, 2020.