Transaction Details

Footnotes

The reporting person disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for Section 16 or any other purpose. | The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.10 to $14.0977, inclusive. The weighted-average sale price reflected has been rounded to 4 decimal points. | The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.20 to $13.85, inclusive. The weighted-average sale price reflected has been rounded to 4 decimal points. | The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.31 to $14.5711, inclusive. The weighted-average sale price reflected has been rounded to 4 decimal points. | These securities are owned directly by Yorktown Energy Partners IX, L.P. ("Yorktown IX"). The reporting person is a member and manager of Yorktown IX Associates LLC, the general partner of Yorktown IX Company LP, the General Partner of Yorktown IX. | These securities are owned directly by Yorktown Energy Partners X, L.P. ("Yorktown X"). The reporting person is a member and manager of Yorktown X Associates LLC, the general partner of Yorktown X Company LP, the General Partner of Yorktown X. | These securities are owned directly by Yorktown Energy Partners XI, L.P. ("Yorktown XI"). The reporting person is a member and manager of Yorktown XI Associates LLC, the general partner of Yorktown XI Company LP, the General Partner of Yorktown XI.