| 101 | Linn Opr Inc | | Oil & Gas Operator | Dec 2007 |
| 102 | Linn Opr LLC | Indiana, PA 15701-8914 | Gas Operator | Dec 2004 |
| 103 | Locin Oil Corporation | Katy, TX 77494 | Oil & Gas Operator | Sep 2026 |
| 104 | Lulu & Thomas Kavouras | | Oil & Gas Operator | Dec 2023 |
| 105 | MDS Energy Dev LLC | Kittanning, PA 16201-4403 | Oil & Gas Operator | Jun 2026 |
| 106 | Meridian Oil & Gas Enterprises Inc | | Oil & Gas Operator | Dec 2003 |
| 107 | Mid East Oil Co | Indiana, PA 15701-5378 | Gas Operator | Dec 2006 |
| 108 | Mieka LLC | Flower Mound, TX 75028-7446 | Oil & Gas Operator | Dec 2014 |
| 109 | Monona LLC | Ligonier, PA 15658-0612 | Gas Operator | May 2026 |
| 110 | MTN V Oil & Gas Inc | | Oil & Gas Operator | Jun 2026 |
| 111 | Murphy Prod Inc | Vanderbilt, PA 15486-1001 | Oil & Gas Operator | Dec 2025 |
| 112 | Natural Energy Dev Corp | Pittsburgh, PA 15241-1548 | Oil & Gas Operator | Dec 2018 |
| 113 | NCL Natural Resources LLC | Spring, TX 77381-5261 | Oil & Gas Operator | Dec 2017 |
| 114 | North East Gas & Oil Co | Scottsville, VA 24590-3962 | Oil & Gas Operator | Dec 2013 |
| 115 | Northeast Natural Energy LLC | Charleston, WV 25301 | Oil & Gas Operator | Jun 2026 |
| 116 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2025 |
| 117 | Nytis Exploration Company LLC | Lexington, KY 40509 | Oil & Gas Operator | Dec 2021 |
| 118 | Oil & Gas MGMT Inc | Mount Pleasant, PA 15666-3304 | Oil & Gas Operator | Dec 2024 |
| 119 | Olympus Energy, LLC | Canonsburg, PA 15317-7536 | Gas Operator | Jun 2025 |
| 120 | Pa Mineral SVCS LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2025 |
| 121 | Pa Prod SVC Inc | Indiana, PA 15701-0421 | Oil & Gas Operator | Dec 2025 |
| 122 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 123 | Patrick Shipley | | Oil & Gas Operator | Dec 2016 |
| 124 | Patriot Exploration Corp | Stahlstown, PA 15687-1301 | Oil & Gas Operator | Dec 2025 |
| 125 | PDC Mountaineer LLC | Wexford, PA 15090-3400 | Oil & Gas Operator | Dec 2017 |
| 126 | Penn VIew Exploration Inc | Blairsville, PA 15717-7961 | Oil & Gas Operator | Jun 2026 |
| 127 | Penneco Oil Company, Inc. | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2025 |
| 128 | Pentex Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 129 | Peoples Gas Co LLC | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2005 |
| 130 | Peoples Natural Gas Co LLC | Pittsburgh, PA 15212 | Gas Operator | Dec 2016 |
| 131 | Petro Dev Corp | Bridgeport, WV 26330-0026 | Oil & Gas Operator | Dec 2013 |
| 132 | Petro SVC Partners Inc | Indiana, PA 15701-8556 | Oil & Gas Operator | Dec 2025 |
| 133 | Phillips Exploration Inc | Warrendale, PA 15086 | Oil & Gas Operator | Dec 2012 |
| 134 | Phillips Prod Co | | Oil & Gas Operator | Dec 2011 |
| 135 | Power Gas MKT & Trans Inc | Akron, OH 44311-1062 | Oil & Gas Operator | Dec 2008 |
| 136 | Questa Petro Co | Pittsburgh, PA 15241-0863 | Oil & Gas Operator | Dec 2023 |
| 137 | R Harris Gas & Oil Inc | Apollo, PA 15613-9636 | Oil & Gas Operator | Dec 2025 |
| 138 | Range Opr Co | | Oil & Gas Operator | Dec 1999 |
| 139 | Range Resources Appalachia LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Jun 2026 |
| 140 | Re Gas Dev LLC | State College, PA 16801-7085 | Oil & Gas Operator | Sep 2018 |
| 141 | Redmill Drilling | Kittanning, PA 16201-7123 | Oil & Gas Operator | Jun 2026 |
| 142 | Rejiss Assoc | Braddock, PA 15104-1948 | Oil & Gas Operator | Dec 2009 |
| 143 | Rejiss Assoc Holdings LLC | Braddock, PA 15104-1948 | Gas Operator | Dec 2025 |
| 144 | Remnant Group Inc | Pittsburgh, PA 15238-1359 | Oil & Gas Operator | Dec 2013 |
| 145 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 146 | Richard H Burkland | Lemont Furnace, PA 15456-0073 | Oil & Gas Operator | Dec 2012 |
| 147 | Richards Drilling Co | | Oil & Gas Operator | Dec 2015 |
| 148 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 149 | Shearer James I | | Oil & Gas Operator | Dec 2003 |
| 150 | Shelly Oil & Gas Inc | Avonmore, PA 15618-9748 | Gas Operator | Dec 2025 |
| 151 | SK Opr Inc | Mars, PA 16046-3811 | Gas Operator | Dec 2025 |
| 152 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2025 |
| 153 | Snee & Eberly & People Natural Gas | Unknown, PA 15000 | Gas Operator | Dec 1986 |
| 154 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Jun 2026 |
| 155 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 156 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 157 | STD Steel | Latrobe, PA 15650-0071 | Oil & Gas Operator | Dec 2002 |
| 158 | Stewart Drilling Program | Home, PA 15747-9801 | Oil & Gas Operator | Dec 2014 |
| 159 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Jul 2026 |
| 160 | Stone Ridge Energy LLC | Uniontown, PA 15401-6831 | Oil & Gas Operator | May 2026 |
| 161 | Susquehanna Energies Inc | Punxsutawney, PA 15767-4004 | Oil & Gas Operator | Dec 2025 |
| 162 | Ter Ex Inc | Butler, PA 16002-8638 | Gas Operator | Dec 1994 |
| 163 | Texas Keystone Inc | Oakmont, PA 15139-2072 | Oil & Gas Operator | Nov 2017 |
| 164 | The Gas & Oil Company LLC | Apollo, PA 15613 | Oil & Gas Operator | Dec 2025 |
| 165 | The Production Co | Ligonier, PA 15658-0467 | Oil & Gas Operator | Dec 2012 |
| 166 | The Production Co LLC | Ligonier, PA 15658-0467 | Oil & Gas Operator | Dec 2020 |
| 167 | Turm Oil Inc | | Oil & Gas Operator | Dec 2025 |
| 168 | TW Phillips Gas Supply Corp | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2011 |
| 169 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | May 2026 |
| 170 | Vec Energy LLC | Kittanning, PA 16201-5022 | Oil & Gas Operator | Jun 2026 |
| 171 | Vernard L Shumaker | Apollo, PA 15613-0249 | Gas Operator | Dec 2025 |
| 172 | Victory Energy Corp | Indiana, PA 15701-8944 | Oil & Gas Operator | Dec 2021 |
| 173 | Viking Resources Corp | Deerfield, OH 44411-0160 | Oil & Gas Operator | Dec 2007 |
| 174 | Viking Resources LLC | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2017 |
| 175 | Washington Energy Co LLC | Canonsburg, PA 15317-0400 | Oil & Gas Operator | Dec 2024 |
| 176 | Westinghouse Elec Co LLC | | Gas Operator | Dec 2025 |
| 177 | WGM Gas Co Inc | | Oil & Gas Operator | Dec 2025 |
| 178 | WHC Oper LLC | | Gas Operator | Dec 2025 |
| 179 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |
| 180 | William McIntire Coal Oil & Gas | | Oil & Gas Operator | May 2022 |
| 181 | Winfall Energy Inc N V | Apollo, PA 15613-0502 | Oil & Gas Operator | Dec 2025 |
| 182 | Wood Drilling LLC | | Gas Operator | Dec 2025 |
| 183 | Wood William C | | Oil & Gas Operator | Dec 2018 |
| 184 | XPR Resources LLC | | Gas Operator | Jun 2026 |
| 185 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |