| 1 | P & M Petroleum Management, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 2 | Pacesetter Energy, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2008 |
| 3 | Pacesetter Energy, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2020 |
| 4 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 5 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 6 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Sep 2025 |
| 7 | Parker & Parsley Acq. Group LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
| 8 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 9 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 10 | Parker & Parsley Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2000 |
| 11 | Parsley Energy Operations, LLC | Irving, TX 75038 | Oil & Gas Operator | Jan 2021 |
| 12 | Patriot Resources, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 13 | Patriot Services, Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Mar 2008 |
| 14 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 15 | Pbex Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Apr 2017 |
| 16 | Pbex Operations, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 17 | PDC Energy | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 18 | PDC-WV-Co Corporation | Denver, CO 80203 | Oil & Gas Operator | Aug 2010 |
| 19 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 20 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 21 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 22 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 23 | Perenco LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 24 | Permian Deep Rock Oil Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 25 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 26 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 27 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2025 |
| 28 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 29 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 30 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 31 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 32 | Pharaoh Oil & Gas, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Sep 2025 |
| 33 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 34 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 35 | Piedra Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 36 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Sep 2025 |
| 37 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | May 2025 |
| 38 | Pitco Investments, LTD. | Scottsdale, AZ 85261 | Oil & Gas Operator | Jan 2013 |
| 39 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Sep 2025 |
| 40 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 41 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 42 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 43 | Platform Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 44 | Powerline Energy Corp. | Arlington, TX 76015 | Oil & Gas Operator | Sep 2025 |
| 45 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 46 | Prasad, Hari Production Co. | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 47 | Prasad, LTD. | Midland, TX 79701 | Oil & Gas Operator | Sep 2006 |
| 48 | Premier Natural Resources, L.P. | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2007 |
| 49 | Premier Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 50 | Premier Operating Company | Tulsa, OK 74153 | Gas Operator | Nov 1996 |
| 51 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Sep 2025 |
| 52 | Pro- Gas, Inc. | Midland, TX 79711 | Oil & Gas Operator | Sep 2025 |
| 53 | Probity Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Jul 2014 |
| 54 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 55 | Purvis Oil Corp | Midland, TX 79702 | Oil & Gas Operator | Jul 1994 |
| 56 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 57 | Purvis, J. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1994 |