| 1 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 2 | Palrich Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Apr 2004 |
| 3 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 4 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 5 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 6 | Perdido Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Oct 2025 |
| 7 | Permian Natural Resources | Pflugerville, TX 78660 | Oil & Gas Operator | Oct 2025 |
| 8 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Oct 2025 |
| 9 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 10 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 11 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 12 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 13 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 14 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 15 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 16 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 17 | Phillips, Jack L. Co. | Gladewater, TX 75647 | Oil & Gas Operator | Oct 2025 |
| 18 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 19 | Phylko Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Aug 2003 |
| 20 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 21 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Oct 2025 |
| 22 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 23 | Powerline Energy Corp. | Arlington, TX 76015 | Oil & Gas Operator | Oct 2025 |
| 24 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Oct 2025 |
| 25 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Oct 2025 |
| 26 | PWR Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Oct 2025 |