| 1 | Abarta Oil & Gas Co., Inc. | Pittsburgh, PA 15238 | Oil & Gas Operator | Dec 2020 |
| 2 | Ardent Resources, Inc. | Upper St Clair, PA 15241-1633 | Oil & Gas Operator | Dec 2018 |
| 3 | Clean Energy Exploration & Production LLC | Norristown, PA 19403 | Gas Operator | Jan 2024 |
| 4 | Columbia Natural Res Inc | Charleston, WV 25362-0070 | Gas Operator | Dec 2008 |
| 5 | Diversified Production LLC | Minden, LA 71055 | Oil & Gas Operator | Apr 2024 |
| 6 | East Resources MGMT LLC | Warrendale, PA 15086-7528 | Oil & Gas Operator | Dec 2010 |
| 7 | East Resources, Inc. | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2021 |
| 8 | Eqt Production Company | Pittsburg, PA 15222 | Oil & Gas Operator | Jan 2024 |
| 9 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Jan 2024 |
| 10 | Repsol Oil & Gas USA, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Apr 2024 |
| 11 | Rockdale Marcellus LLC | Canonsburg, PA 15317 | Gas Operator | Apr 2022 |
| 12 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Jan 2024 |
| 13 | STL Resources LLC | Wexford, PA 15090-8380 | Gas Operator | Jan 2024 |
| 14 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 15 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Jan 2024 |
| 16 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 17 | Tilden Marcellus LLC | Houston, TX 77024-1358 | Gas Operator | May 2022 |
| 18 | Travis Peak Resources LLC | Austin, TX 78759-7279 | Oil & Gas Operator | Dec 2023 |
| 19 | Ultra Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Jan 2024 |
| 20 | Vec Energy LLC | Kittanning, PA 16201-5022 | Oil & Gas Operator | Jan 2024 |
| 21 | Victory Energy Corp | Indiana, PA 15701-8944 | Oil & Gas Operator | Dec 2021 |