| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 2 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 3 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 4 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 5 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 6 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 7 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 8 | Partee Drilling Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 9 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 10 | Patterson, Ben M., Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2003 |
| 11 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 12 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Oct 2025 |
| 13 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 14 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 15 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 16 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 17 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 18 | Pinon Petroleum, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Apr 2004 |
| 19 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Aug 2025 |
| 20 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 21 | Pittencrieff America, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 22 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 23 | Pontotoc Oil Corp. | Midland, TX 79702 | Oil & Gas Operator | Feb 1996 |
| 24 | Price, W. H. & Sons | Granbury, TX 76048 | Oil & Gas Operator | Nov 1997 |
| 25 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |
| 26 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 27 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Oct 2025 |
| 28 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Oct 2025 |