Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.8.0.1
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based Compensation Arrangement by Share-based Payment Award Options and Warrants Vested and Expected to Vest Outstanding and Exercisable [Table Text Block]
The assumptions used for the three months ended March 31, 2017 are as follows:
 
Exercise price
 
 
$0.83-$0.87
 
Expected dividends
 
 
0%
 
Expected volatility
 
 
89.93%-91.82%
 
Risk free interest rate
 
 
1.67%-1.75%
 
Expected life of option
 
 
4.24-4.29 years
 
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of stock option activities for the three months ended March 31, 2018 is as follows:
 
 
 
Options
 
Weighted Average
Exercise Price
 
 
Weighted Average
Remaining
Contractual Life
 
Aggregate
Intrinsic Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance - December 31, 2017
 
 
12,564,098
 
$
1.55
 
 
4.60 years
 
$
1,800
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Expired
 
 
(264,119)
 
$
1.57
 
 
 
 
 
 
 
Forfeited
 
 
(111,464)
 
$
0.78
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance -March 31, 2018 - outstanding
 
 
12,188,515
 
$
1.55
 
 
4.40 years
 
$
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance - March 31, 2018 - exercisable
 
 
8,064,487
 
$
1.93
 
 
3.43 years
 
$
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Grant date fair value of options granted - March 31, 2018
 
 
 
 
$
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average grant date fair value - March 31, 2018
 
 
 
 
$
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Grant date fair value of options granted - December 31, 2017
 
 
 
 
$
1,164,732
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average grant date fair value - December 31, 2017
 
 
 
 
$
0.37