| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 2 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | Sep 2025 |
| 3 | Pappe Court Jr | Kingfisher, OK 73750-0688 | Oil & Gas Operator | Nov 2001 |
| 4 | Paramore Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2022 |
| 5 | Park William M | Sperry, OK 74073 | Oil & Gas Operator | Nov 2025 |
| 6 | Parrish Jr W F | Ardmore, OK 73401-2941 | Oil & Gas Operator | Feb 2025 |
| 7 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 8 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 9 | Paul Burton LLC | Ardmore, OK 73401 | Oil & Gas Operator | Dec 2025 |
| 10 | Pawnee Petroleum Company | Seminole, OK 74868-0951 | Oil & Gas Operator | Feb 2023 |
| 11 | Pax Energy LLC | Oklahoma City, OK 73112-7371 | Oil Operator | Sep 2021 |
| 12 | Payne Charlie D | Lawton, OK 73505 | Oil & Gas Operator | May 2001 |
| 13 | PCL Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Nov 2025 |
| 14 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 15 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Dec 2025 |
| 16 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 17 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 18 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 19 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Nov 2025 |
| 20 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 21 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 22 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 23 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Feb 2026 |
| 24 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 25 | Petro-Mac Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 26 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 27 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 28 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 29 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 30 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 31 | PHD Oil & Gas Inc | Rush Springs, OK 73082-0218 | Oil & Gas Operator | May 2021 |
| 32 | Phillips Operating Co. | Mineral Wells, TX 76067 | Oil & Gas Operator | Jan 2013 |
| 33 | Phoenix Energy Partners LLC | Marlow, OK 73055 | Oil Operator | Nov 2025 |
| 34 | Phoenix Petrocorp, Inc. | McKinney, TX 75070 | Oil & Gas Operator | Dec 2025 |
| 35 | Pickelsimer Kenny | Wilson, OK 73463-6502 | Oil & Gas Operator | Aug 2014 |
| 36 | Pierce O M Operations | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 37 | Pierce Patsey R The Estate Of | Duncan, OK 73533-4900 | Oil Operator | Mar 2007 |
| 38 | Piper Operating LLC | Stigler, OK 74462 | Oil & Gas Operator | Nov 2025 |
| 39 | Pixley Carlis D | Marlow, OK 73055 | Oil & Gas Operator | Sep 1999 |
| 40 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 41 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2025 |
| 42 | Pogue Randall | Ada, OK 74821-1547 | Oil & Gas Operator | Apr 2014 |
| 43 | Poorboy Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2022 |
| 44 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Dec 2025 |
| 45 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 46 | Powell Oil | Healdton, OK 73438-4463 | Oil & Gas Operator | Dec 2025 |
| 47 | Prairiedale Energy Inc | Duncan, OK 73533-3657 | Oil & Gas Operator | Nov 2025 |
| 48 | Preston Carter Oil Company | Davis, OK 73030 | Oil & Gas Operator | Nov 2025 |
| 49 | Price Brothers Oil Co | Duncan, OK 73533 | Oil Operator | Feb 1996 |
| 50 | Price J R Inc | Addington, OK 73520-0099 | Oil & Gas Operator | Apr 2015 |
| 51 | Price, W. H. | Granbury, TX 76048 | Oil & Gas Operator | Jun 2024 |
| 52 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2026 |
| 53 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 54 | Prime Energy Corp | Charleston, WV 25301-1707 | Oil & Gas Operator | Sep 2015 |
| 55 | Prime Operating Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 56 | Priority Holdings LLC | Marlow, OK 73055 | Oil Operator | Nov 2025 |
| 57 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 58 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 59 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Dec 2025 |
| 60 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |