| 1 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2024 |
| 2 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 3 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 4 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 5 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 6 | Pegasi Energy Resources Corp | Tyler, TX 75710 | Oil & Gas Operator | Jul 2007 |
| 7 | Pegasi Operating Inc. | Jefferson, TX 75657 | Oil & Gas Operator | Dec 2024 |
| 8 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 9 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 10 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Dec 2024 |
| 11 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 12 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 13 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jun 2024 |
| 14 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 15 | Poco LLC | Houston, TX 77270 | Oil & Gas Operator | Dec 2024 |
| 16 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |
| 17 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 18 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 19 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Dec 2024 |
| 20 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |