| 1 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 2 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 3 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 4 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 5 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 6 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 7 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 8 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 9 | Ploutos, LLC | | Oil Operator | May 2021 |
| 10 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 11 | Primos Production | | Oil & Gas Operator | Dec 2024 |