| 1 | Alliance Petroleum Corp | Canton, OH 44718-2553 | Oil & Gas Operator | Apr 2026 |
| 2 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Jul 2026 |
| 3 | Atlas Resources LLC | Pittsburgh, PA 15275-1033 | Oil & Gas Operator | Jun 2018 |
| 4 | Beech Resources LLC | Williamsport, PA 17701-6209 | Gas Operator | Apr 2026 |
| 5 | Chesapeake Appalachia, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2025 |
| 6 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 7 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Apr 2026 |
| 8 | East Resources MGMT LLC | | Oil & Gas Operator | Dec 2010 |
| 9 | Eqt Aro LLC | Canonsburg, PA 15317-1000 | Gas Operator | Apr 2026 |
| 10 | Eqt Production Company | Pittsburg, PA 15222 | Oil & Gas Operator | Apr 2026 |
| 11 | Equitable Prod Eastern States Exploration Inc | Snow Shoe, PA 16874-0178 | Gas Operator | Dec 2001 |
| 12 | Equitrans Inc | Cannonsburg, PA 15317 | Oil & Gas Operator | Dec 2018 |
| 13 | Exco Resources (Pa), LLC | Montoursville, PA 17754-2235 | Oil & Gas Operator | Apr 2026 |
| 14 | Expand Oper LLC | Morgantown, WV 26508 | Oil & Gas Operator | Apr 2026 |
| 15 | Formentera Opr LLC | Austin, TX 78701-4889 | Gas Operator | Apr 2026 |
| 16 | Inflection Energy (Pa) LLC | Montoursville, PA 17754-9702 | Gas Operator | Mar 2025 |
| 17 | NCL Natural Resources LLC | Spring, TX 77381-5261 | Oil & Gas Operator | Dec 2017 |
| 18 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Apr 2026 |
| 19 | Range Resources Appalachia LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Apr 2026 |
| 20 | Repsol Oil & Gas USA, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2026 |
| 21 | Rockdale Marcellus LLC | Canonsburg, PA 15317 | Gas Operator | Apr 2022 |
| 22 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Apr 2026 |
| 23 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 24 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 25 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 26 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 27 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2026 |