| 101 | Timberline Energy Inc | Franklin, PA 16323-0269 | Oil & Gas Operator | Jun 2018 |
| 102 | Tom A Leeper | Brush Valley, PA 15720-0206 | Oil & Gas Operator | Dec 2023 |
| 103 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | Dec 2023 |
| 104 | Us Gypsum Co | Oakfield, NY 14125-9722 | Gas Operator | Dec 2005 |
| 105 | Van Hampton Gas & Oil Co Inc | Pleasantville, PA 16341-0329 | Gas Operator | Dec 2020 |
| 106 | Vec Energy LLC | Kittanning, PA 16201-5022 | Oil & Gas Operator | Jan 2024 |
| 107 | Vista Opr Inc | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Dec 2023 |
| 108 | WB Prod MGMT Co | Franklin, PA 16323-0107 | Oil & Gas Operator | Dec 2020 |
| 109 | Weaver Carroll A | Knox, PA 16232 | Oil Operator | Dec 1992 |
| 110 | WGM Gas Co Inc | Creekside, PA 15732-8500 | Oil & Gas Operator | Dec 2023 |
| 111 | William McIntire Coal Oil & Gas | Shelocta, PA 15774-0171 | Oil & Gas Operator | May 2022 |
| 112 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | Dec 2023 |
| 113 | Winfall Energy Inc N V | Vandergrift, PA 15690-2001 | Oil & Gas Operator | Dec 2019 |
| 114 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |