Annual report pursuant to Section 13 and 15(d)

Stock- based compensation (Tables)

v3.20.4
Stock- based compensation (Tables)
 12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Schedule of warrants
    Shares Underlying Warrants     Weighted Average Exercise Price     Weighted Average Remaining Contractual Life (years)     Aggregate Intrinsic Value  
Outstanding at January 1, 2019     2,629,468     $ 5.24       3.58     $        -  
Granted     141,333       5.62                  
Forfeited     (25,000 )     7.39                  
Outstanding at December 31, 2019     2,745,801       5.24       2.58     $ -  
Granted     14,437,250       1.25                  
Exercised     (50,000 )     1.17               *  
Forfeited     (75,000 )     8.71                  
Outstanding and exercisable at December 31, 2020     17,058,051     $ 1.86       5.78     $ -  

 

* represents amount less than $1,000
Schedule of stock option activity
    Shares Underlying Options     Weighted Average Exercise Price     Weighted Average Remaining Contractual Life (years)     Aggregate Intrinsic Value  
Outstanding at January 1, 2019     2,520,101     $ 4.32       8.72     $           -  
Granted     1,242,144       4.02                  
Exercised     (416 )     3.78               *  
Forfeited     (242,060 )     4.24                  
Outstanding at December 31, 2019     3,519,769       4.22       7.91       -  
Granted     2,650,666       1.46                  
Forfeited     (1,141,316 )     3.17                  
Outstanding at December 31, 2020     5,029,119     $ 3.00       7.96     $ -  

 

 

* represents amount less than $1,000
Schedule of option pricing model using weighted average assumptions
    For the year ended December 31,  
    2020     2019  
Expected term, in years     5.6       5.8  
Expected volatility     82.70 %     72.89 %
Risk-free interest rate     0.86 %     2.34 %
Dividend yield     -       -  
Grant date fair value   $ 1.83     $ 2.58  
Schedule of restricted stock unit awards activity
    Number of Shares     Aggregate
Weighted Average Grant Date Fair Value		  
Nonvested at January 1, 2019     165,000     $ 4.91  
Granted     76,112       4.32  
Vested     (55,523 )     4.76  
Nonvested at December 31, 2019     185,589     $ 4.71  
Granted     260,154       2.16  
Vested     (107,818 )     3.59  
Nonvested at December 31, 2020     337,925     $ 3.10  
Schedule of share based compensation
  December 31,  
    2020     2019  
Research and development   $ 588     $ 697  
Sales and marketing     340       325  
General and administrative     1,977       2,183  
Total   $ 2,905     $ 3,205