The following table summarizes the stock option activity during the year ended December 31, 2015: | | | | | | | | | | | | | | | | | | | | | | | | | | Number of Options Outstanding | | Weighted-Average Exercise Price | | Weighted-Average Remaining Contractual Term (in years) | | Aggregate Intrinsic Value (in thousands) | Outstanding at December 31, 2014 | | 611,875 |
| | $ | 4.50 |
| | 3.2 |
| | $ | 642 |
| Granted | | — |
| | — |
| |
|
| |
|
| Exercised | | — |
| | — |
| |
|
| |
|
| Expired or Forfeited | | — |
| | — |
| |
|
| |
|
| Outstanding at December 31, 2015 | | 611,875 |
| | $ | 4.50 |
| | 2.2 |
| | $ | 43 |
| Exercisable at December 31, 2015 | | 611,875 |
| | $ | 4.50 |
| | 2.2 |
| | $ | 43 |
|
The following table summarizes information about warrants outstanding at December 31, 2015: | | | | | | | | | | | | | | | | December 31, 2015 | | Exercise Price | | Date of Issue | | Expiry Date | | Remaining Contractual Life (in years) | | Number Outstanding | | | $ | 5.00 |
| | 16-Sep-13 | | 15-Sep-23 | | 7.7 | | 3,280,790 |
| | | $ | 5.00 |
| | 3-Feb-14 | | 15-Sep-23 | | 7.7 | | 1,642,975 |
| | | | | | Total: | | 7.7 | | 4,923,765 |
| |
|