| 1 | Warburg Pincus Private Equity VIII L.P. WPP GP LLC WP Antero LLC WARBURG PINCUS LLC WARBURG PINCUS & CO. KAYE CHARLES R Landy Joseph P. Director 10% Owner | 2018-02-12 16:47:21 | 46,609,601 0 | 46,609,601 | Form 13G |
| 2 | RADY PAUL M See Remarks | 2025-05-08 17:25:14 | 11,889,973 5,284,264 | 17,174,237 | Form 4 |
| 3 | Manning Christopher Reid Director | 2016-03-02 17:01:20 | 5,186 16,220,488 | 16,225,674 | Form 4 |
| 4 | SailingStone Capital Partners LLC SailingStone Holdings LLC Davis MacKenzie B Settles Kenneth L Jr 10% Owner | 2021-02-19 15:30:09 | 13,585,032 0 | 13,585,032 | Form 13G |
| 5 | Warren Glen C Jr See Remarks | 2021-04-26 16:32:40 | 9,606,120 803,007 | 10,409,127 | Form 4 |
| 6 | Schopp Alvyn A. See Remarks | 2022-02-14 18:17:21 | 2,443,401 0 | 2,443,401 | Form 5 |
| 7 | Kennedy Michael N. See Remarks | 2025-10-16 17:44:24 | 1,179,075 0 | 1,179,075 | Form 4 |
| 8 | Ash W Patrick See Remarks | 2022-10-21 08:05:54 | 928,917 0 | 928,917 | Form 4 |
| 9 | Warburg Pincus Private Equity X L.P. Warburg Pincus X Partners L.P. Warburg Pincus Private Equity X O&G L.P. Warburg Pincus X L.P. Warburg Pincus X LLC Warburg Pincus Partners LLC WARBURG PINCUS LLC WARBURG PINCUS & CO. KAYE CHARLES R Landy Joseph P. Director 10% Owner | 2020-02-11 19:22:02 | 660,849 0 | 660,849 | Form 13G |
| 10 | Warburg Pincus Private Equity X O&G L.P. Warburg Pincus Private Equity X L.P. Warburg Pincus X Partners L.P. Warburg Pincus X L.P. Warburg Pincus X GP L.P. WPP GP LLC Warburg Pincus Partners L.P. Warburg Pincus Partners GP LLC WARBURG PINCUS & CO. Director 10% Owner | 2020-02-11 19:22:02 | 660,849 0 | 660,849 | Form 13G |
| 11 | Warburg Pincus Private Equity X O&G L.P. Warburg Pincus X Partners L.P. Warburg Pincus X L.P. Warburg Pincus X GP L.P. WPP GP LLC Warburg Pincus Partners L.P. Warburg Pincus Partners GP LLC WARBURG PINCUS & CO. Director 10% Owner | 2020-02-11 19:22:02 | 660,849 0 | 660,849 | Form 13G |
| 12 | KAGAN PETER Director | 2019-06-12 17:26:46 | 371,851 0 | 371,851 | Form 4 |
| 13 | Keenan W Howard JR Director | 2025-10-14 16:41:02 | 368,191 0 | 368,191 | Form 4 |
| 14 | Schultz Yvette K See Remarks | 2025-10-16 17:48:27 | 301,307 0 | 301,307 | Form 4 |
| 15 | Krueger Brendan E. See Remarks | 2025-11-10 20:14:30 | 295,917 0 | 295,917 | Form 4/A |
| 16 | McNeilly Ward D. See Remarks | 2018-04-16 19:12:57 | 248,716 0 | 248,716 | Form 4 |
| 17 | Kilstrom Kevin J. Senior VP - Production | 2019-04-17 17:04:30 | 212,886 0 | 212,886 | Form 4 |
| 18 | Hardesty Benjamin A. Director | 2025-11-04 16:58:21 | 176,557 500 | 177,057 | Form 4 |
| 19 | Levy James R. Director | 2019-06-12 17:25:46 | 116,214 0 | 116,214 | Form 4 |
| 20 | KORUS PAUL Director | 2021-04-14 16:19:29 | 102,640 0 | 102,640 | Form 4 |
| 21 | Sutil Vicky Director | 2025-10-14 16:39:05 | 99,711 0 | 99,711 | Form 4 |
| 22 | Tyree Thomas B JR Director | 2025-10-14 16:47:08 | 99,711 0 | 99,711 | Form 4 |
| 23 | Yoo K. Phil See Remarks | 2020-04-17 07:30:31 | 84,598 0 | 84,598 | Form 4 |
| 24 | CLARK ROBERT J Director | 2025-04-14 17:01:53 | 76,589 0 | 76,589 | Form 4 |
| 25 | McConnell Joyce E. Director | 2020-01-14 19:26:13 | 66,988 0 | 66,988 | Form 4 |
| 26 | Mutschler Jacqueline C Director | 2025-10-14 16:44:19 | 65,244 0 | 65,244 | Form 4 |
| 27 | Pearce Sheri See Remarks | 2025-10-16 17:47:26 | 61,305 0 | 61,305 | Form 4 |
| 28 | Schroer Brenda R Director | 2025-10-14 16:43:21 | 33,914 0 | 33,914 | Form 4 |
| 29 | Connor Richard W. Director | 2019-01-14 18:31:29 | 30,749 40 | 30,789 | Form 4 |
| 30 | Munoz Jeffrey S. Director | 2025-10-14 16:44:56 | 5,857 0 | 5,857 | Form 4 |
| 31 | Antero Resources LLC 10% Owner | 2013-10-09 19:33:49 | 1,127 0 | 1,127 | Form 3 |
| 32 | Antero Resources Investment LLC 10% Owner | 2016-02-11 17:11:05 | 0 0 | 0 | Form 13G |
| 33 | Warburg Pincus Private Equity VIII L.P. Warburg Pincus Partners L.P. Warburg Pincus Partners GP LLC WARBURG PINCUS & CO. Director 10% Owner | 2018-11-09 14:32:23 | 0 0 | 0 | Form 4 |
| 34 | WARBURG PINCUS LLC KAYE CHARLES R Landy Joseph P. Director 10% Owner | 2019-06-12 17:27:01 | 0 0 | 0 | Form 4 |