Year of Grant | | Year ended December 31, 2016 | | |
Dividend Yield | | | 0% | |
Risk free interest rate | | | 0.54% | |
Expected life | | | 2.6 to 3.5 years | |
Expected volatility (1) | | | 92% to 97% | |
Weighted average grant date fair value of the options granted | | | $0.19 | |