| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| CEN | President, CEO | Nov 10, 2017 | Buy | $9.67 | 7,200 | 69,624 | 15,700 | Nov 13, 2017, 03:53 PM |
| CEN | President, CEO | Jul 01, 2016 | Buy | $11.91 | 500 | 5,955 | 500 | Jul 06, 2016, 11:48 AM |
| CEN | President, CEO | Jul 01, 2016 | Buy | $11.83 | 500 | 5,914 | 750 | Jul 06, 2016, 11:48 AM |
| CEN | President, CEO | Jul 01, 2016 | Buy | $11.92 | 500 | 5,958 | 2,079 | Jul 06, 2016, 11:48 AM |
| CEN | President, CEO | Jul 01, 2016 | Buy | $11.91 | 500 | 5,956 | 2,079 | Jul 06, 2016, 11:48 AM |
| CEN | President, CEO | Feb 05, 2016 | Buy | $9.33 | 8,500 | 79,288 | 8,500 | Feb 08, 2016, 09:58 AM |
| CEN | President, CEO | Jan 21, 2016 | Buy | $6.71 | 10,000 | 67,130 | 122,817 | Jan 22, 2016, 11:06 AM |
| CEN | President, CEO | Jan 19, 2016 | Buy | $7.25 | 1,820 | 13,193 | 22,817 | Jan 20, 2016, 10:40 AM |
| CEN | President, CEO | Jan 11, 2016 | Buy | $8.70 | 250 | 2,175 | 250 | Jan 12, 2016, 11:25 AM |
| CEN | President, CEO | Jan 11, 2016 | Buy | $8.70 | 25,000 | 217,400 | 100,000 | Jan 12, 2016, 11:25 AM |
| CEN | President, CEO | Dec 07, 2015 | Buy | $8.54 | 75,000 | 640,306 | 75,000 | Dec 08, 2015, 09:09 AM |
| CEN | President, CEO | May 27, 2015 | Buy | $15.38 | 1,000 | 15,380 | 1,000 | May 27, 2015, 01:18 PM |
| CEN | President, CEO | Apr 24, 2015 | Buy | $15.38 | 334 | 5,137 | 1,334 | Apr 28, 2015, 03:41 PM |
| CEN | President, CEO | Apr 24, 2015 | Buy | $15.38 | 718 | 11,043 | 718 | Apr 28, 2015, 03:41 PM |
| CEN | President, CEO | Apr 24, 2015 | Buy | $15.38 | 17,854 | 274,595 | 17,854 | Apr 28, 2015, 03:41 PM |
| CEN | President, CEO | Dec 15, 2014 | Buy | $17.30 | 997 | 17,248 | 10,997 | Dec 17, 2014, 01:55 PM |
| CEN | President, CEO | Dec 16, 2014 | Buy | $17.50 | 10,000 | 175,000 | 20,997 | Dec 17, 2014, 01:55 PM |
| CEN | President, CEO | Jul 23, 2014 | Buy | $19.36 | 1,000 | 19,360 | 1,000 | Jul 24, 2014, 05:29 PM |
| CEN | President, CEO | Nov 22, 2013 | Buy | $18.02 | 1,000 | 18,020 | 12,000 | Nov 25, 2013, 02:11 PM |
| CEN | President, CEO | Nov 22, 2013 | Buy | $18.02 | 1,000 | 18,020 | 11,000 | Nov 25, 2013, 02:11 PM |
| CEN | President, CEO | Nov 22, 2013 | Buy | $18.07 | 10,000 | 180,670 | 10,000 | Nov 25, 2013, 02:11 PM |
| SBIB | Director | Feb 02, 2011 | Option Exercise | $9.05 | 19,582 | 177,217 | 0 | Feb 02, 2011, 05:26 PM |
| SBIB | Director | Feb 01, 2011 | Option Exercise | $9.10 | 27,918 | 254,054 | 19,582 | Feb 02, 2011, 05:26 PM |
| SBIB | Director | Feb 01, 2011 | Option Exercise | $9.13 | 10,000 | 91,300 | 0 | Feb 02, 2011, 05:26 PM |
| SBIB | Director | Feb 01, 2011 | Option Exercise | $9.13 | 12,000 | 109,560 | 0 | Feb 02, 2011, 05:26 PM |
| SBIB | Director | Feb 01, 2011 | Option Exercise | $9.13 | 11,075 | 101,115 | 0 | Feb 02, 2011, 05:26 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| CEN | President, CEO | Nov 10, 2017 | Buy | 69,624 |
| CEN | President, CEO | Jul 01, 2016 | Buy | 5,955 |
| CEN | President, CEO | Jul 01, 2016 | Buy | 5,914 |
| CEN | President, CEO | Jul 01, 2016 | Buy | 5,958 |
| CEN | President, CEO | Jul 01, 2016 | Buy | 5,956 |
| CEN | President, CEO | Feb 05, 2016 | Buy | 79,288 |
| CEN | President, CEO | Jan 21, 2016 | Buy | 67,130 |
| CEN | President, CEO | Jan 19, 2016 | Buy | 13,193 |
| CEN | President, CEO | Jan 11, 2016 | Buy | 2,175 |
| CEN | President, CEO | Jan 11, 2016 | Buy | 217,400 |
| CEN | President, CEO | Dec 07, 2015 | Buy | 640,306 |
| CEN | President, CEO | May 27, 2015 | Buy | 15,380 |
| CEN | President, CEO | Apr 24, 2015 | Buy | 5,137 |
| CEN | President, CEO | Apr 24, 2015 | Buy | 11,043 |
| CEN | President, CEO | Apr 24, 2015 | Buy | 274,595 |
| CEN | President, CEO | Dec 15, 2014 | Buy | 17,248 |
| CEN | President, CEO | Dec 16, 2014 | Buy | 175,000 |
| CEN | President, CEO | Jul 23, 2014 | Buy | 19,360 |
| CEN | President, CEO | Nov 22, 2013 | Buy | 18,020 |
| CEN | President, CEO | Nov 22, 2013 | Buy | 18,020 |
| CEN | President, CEO | Nov 22, 2013 | Buy | 180,670 |
| SBIB | Director | Feb 02, 2011 | Option Exercise | 177,217 |
| SBIB | Director | Feb 01, 2011 | Option Exercise | 254,054 |
| SBIB | Director | Feb 01, 2011 | Option Exercise | 91,300 |
| SBIB | Director | Feb 01, 2011 | Option Exercise | 109,560 |
| SBIB | Director | Feb 01, 2011 | Option Exercise | 101,115 |