| 1 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 2 | Pardus Oil & Gas Operating, LP | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2022 |
| 3 | Parten Oil Co. | Houston, TX 77060 | Oil & Gas Operator | Jan 1994 |
| 4 | Parten Operating Inc. | Houston, TX 77069 | Oil & Gas Operator | Oct 2025 |
| 5 | Patriot E & P Company | Tyler, TX 75710 | Oil & Gas Operator | Aug 2004 |
| 6 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 7 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Oct 2025 |
| 8 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 9 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2025 |
| 10 | Petroreal Inc. | Temple, TX 76503 | Oil & Gas Operator | Oct 2025 |
| 11 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 12 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 13 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 14 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2015 |
| 15 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 16 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Oct 2025 |
| 17 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Oct 2025 |
| 18 | Proven Natural Resources LLC | Canton, TX 75103 | Oil & Gas Operator | Oct 2025 |
| 19 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 20 | PXP Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2007 |