| 1 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 2 | P.S.N. Petroleum, Inc. | San Antonio, TX 78233 | Oil & Gas Operator | Apr 2024 |
| 3 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | Apr 2024 |
| 4 | Panther Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2017 |
| 5 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 6 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 7 | PDH Enterprises | Pittsburg, TX 75686 | Oil & Gas Operator | Apr 2019 |
| 8 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 9 | Pegasus Petroleum Corporation | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2024 |
| 10 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Apr 2024 |
| 11 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 12 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 13 | Petro Resources, Inc. | Fulton, TX 78358 | Oil & Gas Operator | Apr 2024 |
| 14 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 15 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 16 | Petrogas Operating Corporation | Garland, TX 75043 | Oil Operator | Feb 2010 |
| 17 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
| 18 | Petrosaurus, Inc. | Somerset, TX 78069 | Oil Operator | Apr 2024 |
| 19 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 20 | Pintex Operating Inc. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Feb 2005 |
| 21 | Plains Exploration & Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Jul 2013 |
| 22 | Pre Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 1993 |
| 23 | Premier Minerals, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2024 |
| 24 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 25 | Pressly Oil Interest, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2024 |
| 26 | Prevail Energy, Inc | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Apr 2024 |
| 27 | Primera Energy, LLC | Longview, TX 75606 | Oil & Gas Operator | Mar 2016 |
| 28 | Producers Engineering Company | Destin, FL 32541 | Oil & Gas Operator | Sep 1999 |
| 29 | Production Resources, Inc. | Castroville, TX 78009 | Oil & Gas Operator | Apr 2024 |
| 30 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Apr 2024 |
| 31 | Progenies Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 32 | Pullin Lease Service, Inc. | Taft, TX 78390 | Oil & Gas Operator | Apr 2024 |
| 33 | Puls, W. L. | Houston, TX 77084 | Oil & Gas Operator | Sep 2002 |
| 34 | Pump-N-Production, LLC | Poth, TX 78147 | Oil Operator | Apr 2024 |