| 1 | P & P Producing Inc | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 2 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 3 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 4 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2025 |
| 5 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 6 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 7 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 8 | Patron Energy LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 9 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 10 | Peak Operating Oil & Gas LLC | Wichita, KS 67226-3375 | Oil & Gas Operator | Feb 2025 |
| 11 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 12 | Pet-Ex, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2025 |
| 13 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 14 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 15 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 16 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 17 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Jun 2025 |
| 18 | Polaris Energy Dev Co | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2000 |
| 19 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Jun 2025 |
| 20 | Premier Resources LTD | Denver, CO 80237 | Oil & Gas Operator | Jul 2002 |
| 21 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 22 | Presidio Petroleum LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 23 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Jun 2025 |
| 24 | Primary Natural Resources III LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2025 |
| 25 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 26 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 27 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 28 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 29 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Jun 2025 |
| 30 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 31 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 32 | Providence Energy Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Feb 1994 |
| 33 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 34 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Mar 2025 |