| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| CERC | 10% Owner | Aug 13, 2018 | Option Exercise | $3.20 | 1,270 | 4,064 | 1,270 | Oct 18, 2018, 05:10 PM |
| CERC | 10% Owner | Aug 13, 2018 | Sale | $3.98 | 1,270 | 5,055 | 0 | Oct 18, 2018, 05:10 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| CERC | 10% Owner | Aug 13, 2018 | Option Exercise | 4,064 |
| CERC | 10% Owner | Aug 13, 2018 | Sale | 5,055 |