| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 2 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 3 | Paleo, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Apr 2025 |
| 4 | Paloma Operating Co Inc | Houston, TX 77002-5220 | Oil & Gas Operator | Dec 2024 |
| 5 | Paloma Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2018 |
| 6 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Dec 2024 |
| 7 | Panda Resources Inc | Tulsa, OK 74137-3536 | Oil & Gas Operator | Feb 1994 |
| 8 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 9 | Patrick Exploration Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 10 | Payrock Energy LLC | Oklahoma City, OK 73134-2612 | Oil & Gas Operator | Feb 2023 |
| 11 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 12 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 13 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Jan 2025 |
| 14 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Apr 2025 |
| 15 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 16 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 17 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 18 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 19 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Apr 2025 |
| 20 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 21 | Piper Operating LLC | Stigler, OK 74462 | Oil & Gas Operator | Feb 2025 |
| 22 | Powell Oil | Healdton, OK 73438-4463 | Oil & Gas Operator | Jan 2025 |
| 23 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 24 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 25 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 26 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |