| 1 | P1 Energy, LLC | Judson, TX 75660 | Oil & Gas Operator | Oct 2025 |
| 2 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2025 |
| 3 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 4 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 5 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 6 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 7 | Parallel Petroleum LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 8 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 9 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 10 | Parsley Energy Operations, LLC | Irving, TX 75038 | Oil & Gas Operator | Jan 2021 |
| 11 | Partee Drilling Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 12 | Patno Oil & Gas Company | Zapata, TX 78076 | Oil & Gas Operator | Oct 2025 |
| 13 | Patriot Resources, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 14 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 15 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 16 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 17 | Patton, Lloyd | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 18 | Patton, Lloyd J Estate | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 19 | Pecos Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 20 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 21 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 22 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 23 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 24 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 25 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 26 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 27 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2025 |
| 28 | Petro-West Corporation | Lubbock, TX 79404 | Oil & Gas Operator | Oct 2001 |
| 29 | Petrodata Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 30 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 31 | Petx Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 32 | Pharaoh Oil & Gas, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 33 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 34 | Phillips, Ken | San Angelo, TX 76904 | Oil & Gas Operator | Jun 2021 |
| 35 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 36 | Pilgrim Energy Partners L.L.C. | Fairfield, IL 62837 | Oil Operator | Oct 2025 |
| 37 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Aug 2025 |
| 38 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 39 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 40 | Pitco Investments, LTD. | Scottsdale, AZ 85261 | Oil & Gas Operator | Jan 2013 |
| 41 | Pittencrieff America, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 42 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 43 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 44 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 45 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 46 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 47 | Probity Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Jul 2014 |
| 48 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Oct 2025 |
| 49 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 50 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |