| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 2 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Jul 2025 |
| 3 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2025 |
| 4 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 5 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 6 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 7 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 8 | Patriot Operating Company, Inc. | Houston, TX 77008 | Oil & Gas Operator | Sep 2003 |
| 9 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 10 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 11 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 12 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 13 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Jul 2025 |
| 14 | Peles, LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 15 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Jul 2025 |
| 16 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jul 2025 |
| 17 | Petroleum Resource Management Co | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 18 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 19 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 20 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 21 | Pitchfork Oil & Gas, Inc. | Orchard, TX 77464 | Oil & Gas Operator | Jul 2025 |
| 22 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 23 | Plantation Operating Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Jul 2025 |
| 24 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Jul 2025 |
| 25 | Primal Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 26 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 27 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 28 | Producers Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Aug 2000 |
| 29 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Jul 2025 |
| 30 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Jul 2025 |
| 31 | Property Development Group, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Jul 2025 |
| 32 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |