| 1 | Atlas Resources Inc | Coraopolis, PA 15108-0611 | Oil & Gas Operator | Dec 2007 |
| 2 | Atlas Resources LLC | Pittsburgh, PA 15275-1033 | Oil & Gas Operator | Jun 2018 |
| 3 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Dec 2022 |
| 4 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2024 |
| 5 | DJR Well Services Inc | McDonald, OH 44437 | Oil & Gas Operator | Dec 2023 |
| 6 | Enervest Opr LLC | Charleston, WV 25301-1782 | Oil & Gas Operator | Dec 2019 |
| 7 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |
| 8 | Geopetro LLC | Worthington, OH 43085-2316 | Oil & Gas Operator | Sep 2024 |
| 9 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 10 | Ows Acquisition Co LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2023 |
| 11 | Pennenergy Resources LLC | Pittsburgh, PA 15275-1063-1063 | Oil & Gas Operator | Sep 2024 |
| 12 | Re Gas Dev LLC | State College, PA 16801-7085 | Oil & Gas Operator | Sep 2018 |
| 13 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 14 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |