| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| CNAT | SVP, Reg Affairs and QA | Nov 14, 2018 | Option Exercise | $3.15 | 1,724 | 5,431 | 10,875 | Feb 11, 2019, 04:20 PM |
| CNAT | SVP, Reg Affairs and QA | May 14, 2018 | Option Exercise | $3.31 | 4,690 | 15,524 | 9,151 | Feb 11, 2019, 04:20 PM |
| CNAT | SVP, Reg Affairs and QA | Nov 14, 2017 | Option Exercise | $3.48 | 4,461 | 15,524 | 4,461 | Feb 05, 2018, 05:03 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| CNAT | SVP, Reg Affairs and QA | Nov 14, 2018 | Option Exercise | 5,431 |
| CNAT | SVP, Reg Affairs and QA | May 14, 2018 | Option Exercise | 15,524 |
| CNAT | SVP, Reg Affairs and QA | Nov 14, 2017 | Option Exercise | 15,524 |