| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| CEN | Director | Apr 24, 2015 | Buy | $15.38 | 680 | 10,458 | 2,580 | Apr 28, 2015, 04:37 PM |
| CEN | Director | Feb 10, 2014 | Buy | $17.53 | 1,900 | 33,307 | 1,900 | Feb 10, 2014, 05:16 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| CEN | Director | Apr 24, 2015 | Buy | 10,458 |
| CEN | Director | Feb 10, 2014 | Buy | 33,307 |