| 1 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 2 | Park Kenneth Y | Skiatook, OK 74070-6060 | Oil & Gas Operator | Feb 2026 |
| 3 | Park William M | Sperry, OK 74073 | Oil & Gas Operator | Feb 2026 |
| 4 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 5 | Parker James A | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2026 |
| 6 | Parks Jack Concrete Co | Hominy, OK 74035 | Oil Operator | Aug 2025 |
| 7 | Parsage Oil Company, L.L.C. | | Oil & Gas Operator | Feb 2026 |
| 8 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 9 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 10 | Patrick Exploration Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 11 | Payne, Frank O | | Oil Operator | Aug 1999 |
| 12 | Paystone Oil Corporation | Tulsa, OK 74105 | Oil Operator | Mar 2009 |
| 13 | Pe - Osage, LLC | | Oil Operator | Jan 2026 |
| 14 | Pease George W Jr | Fairfax, OK 74637 | Oil & Gas Operator | Mar 1998 |
| 15 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 16 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 17 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Feb 2026 |
| 18 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 19 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Sep 2025 |
| 20 | Performance Operating Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Feb 2026 |
| 21 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Feb 2026 |
| 22 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Feb 2026 |
| 23 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 24 | Petrogas Exploration Inc | | Oil Operator | Dec 2025 |
| 25 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 26 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 27 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 28 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 29 | Petromerica Operating LLC | Oklahoma City, OK 73102-4613 | Oil Operator | Feb 2026 |
| 30 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Apr 2026 |
| 31 | PHD Oil & Gas Inc | Rush Springs, OK 73082-0218 | Oil & Gas Operator | May 2021 |
| 32 | Phillips, Warren P | | Oil & Gas Operator | Apr 2011 |
| 33 | Phoenix Hydrocarbons Operating Co | Midland, TX 79702-3638 | Oil & Gas Operator | Jul 2018 |
| 34 | Pierce Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2017 |
| 35 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 36 | Pinnacle Operating Company LLC | Tulsa, OK 74137 | Oil & Gas Operator | Feb 2026 |
| 37 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Apr 2026 |
| 38 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 39 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 40 | Plenergy Dev LTD | | Oil & Gas Operator | Jun 2004 |
| 41 | Powell James S | Cleveland, OK 74020 | Oil Operator | Feb 2026 |
| 42 | Presco Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2020 |
| 43 | Prime Energy Corp | Charleston, WV 25301-1707 | Oil & Gas Operator | Sep 2015 |
| 44 | Prime Operating Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 45 | Pringle Operating Co. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2015 |
| 46 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 47 | Putnam Phyllis L | Bartlesville, OK 74006-7326 | Oil & Gas Operator | May 2021 |
| 48 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |