| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 2 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 3 | Pangea'S Edge Operating Company LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2025 |
| 4 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 5 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Oct 2025 |
| 6 | Peak Operating LLC | Oklahoma City, OK 73157 | Oil & Gas Operator | Jun 2025 |
| 7 | Pentad Development Corp. (A) | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 8 | Pergerson Energy, L.L.C. | Richmond, VA 23225 | Oil Operator | Oct 2025 |
| 9 | Person, J.S., Inc. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 10 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 11 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 12 | Phillips, B. F. Jr., Estate Of | Dallas, TX 75201 | Oil & Gas Operator | Mar 2011 |
| 13 | Phillips, Jack L. Co. | Gladewater, TX 75647 | Oil & Gas Operator | Oct 2025 |
| 14 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 15 | Pine Ridge Operating, L.P. | Waelder, TX 78959 | Oil & Gas Operator | Oct 2025 |
| 16 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Aug 2025 |
| 17 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 18 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 19 | Powell, Gene Investments, Inc. | Longview, TX 75608 | Oil & Gas Operator | Apr 2024 |
| 20 | Powerline Energy Corp. | Arlington, TX 76015 | Oil & Gas Operator | Oct 2025 |
| 21 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |