| 2017 | 2016 | 2015 | 2015 | |||||
| Options granted | *5,000 | *18,000 | 90,000 | 25,000 | ||||
| Grant date | May 30, 2017 | October 13, 2016 | December 21, 2015 | October 7, 2015 | ||||
| Risk-free interest rate | 2.40% | 0.53% | 0.53% | 0.53% | ||||
| Expected stock price volatility (based on historical volatility) | 118% | 119% | 41,2% | 39,6% | ||||
| Expected option life in years | 3 | 5 | 5 | 5 | ||||
| Exercise price | * CAD 8.10 | * CAD 11.50 | CAD 0.74 | CAD 0.80 | ||||
| Share price at grant date | * CAD8.10 | * CAD 11.50 | CAD 0.74 | CAD 0.79 | ||||
| Fair value at grant date | * USD 5.81 | * USD 9.45 | USD 0.27 | USD 0.27 |
*2017 | *2016 | |||||||||||||||
RSUs | PSUs | RSUs | PSUs | |||||||||||||
Fair value (USD) | $ | 7.37 | $ | 7.17 | $ | 5.50 | $ | 5.25 | ||||||||
Share price (USD) | $ | 7.37 | $ | 7.37 | $ | 5.50 | $ | 5.50 | ||||||||
Performance multiplier percentage | - | 94 | % | - | 100 | % | ||||||||||