| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| 08/17/18 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 11,422 | -- | 65,735 |
| 08/14/18 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 30,318 | -- | 67,454 |
| 02/06/18 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 11,746 | -- | 37,674 |
| 02/06/18 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 275 | -- | 37,949 |
| 02/06/18 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 1,394 | -- | 39,343 |
| 02/13/17 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 12,547 | -- | 26,821 |
| 02/20/16 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 1,341 | -- | 76,253 |
| 02/09/16 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 28,125 | -- | 74,912 |
| 02/11/15 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 12,905 | -- | 46,544 |
| 02/11/15 |
VP of Reservoir Engineering
|
VP of Reservoir Engineering | Form 4/A | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 16,760 | -- | 50,399 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.