| 1 | Alpine Gas Operator, LLC | | Oil & Gas Operator | Jun 2024 |
| 2 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 3 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 4 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 5 | Aviara Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2002 |
| 6 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 7 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 8 | Century Exploration New Orleans, LLC | | Oil & Gas Operator | Mar 2008 |
| 9 | Clark, Donald-Roger Young | | Oil & Gas Operator | Jan 1988 |
| 10 | Clark, Noel D. Et Al | | Oil & Gas Operator | Mar 1994 |
| 11 | Clarkco Services, Inc. | | Oil & Gas Operator | Oct 2025 |
| 12 | Clinch Drilling Company | | Oil & Gas Operator | Jan 2000 |
| 13 | Cody Operating, Inc. | | Oil & Gas Operator | Nov 2025 |
| 14 | Conquest Exploration Co. | | Oil & Gas Operator | Mar 1992 |
| 15 | Deeprock Disposal Services, LLC | | Oil & Gas Operator | Sep 1991 |
| 16 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 17 | Denbury Resources Inc. | Plano, TX 75024 | Oil & Gas Operator | Dec 2003 |
| 18 | Diamond Onshore Production, L. L. C. | | Oil & Gas Operator | Sep 2005 |
| 19 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Nov 2025 |
| 20 | Elite Group LLC | | Oil & Gas Operator | Oct 2025 |
| 21 | Energy Exploration Co | | Oil & Gas Operator | Feb 1991 |
| 22 | Escambia Operating Co., LLC | Gulfport, MS 39501 | Oil & Gas Operator | Sep 2025 |
| 23 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 24 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 25 | Fortson Oil | | Oil & Gas Operator | Jan 1998 |
| 26 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 27 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 28 | Harmony Producing Co Inc | | Oil & Gas Operator | Dec 1995 |
| 29 | Harris & Payne-Randel Drilling | | Oil & Gas Operator | Dec 1989 |
| 30 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 31 | High-Line Production Services LLC | | Oil & Gas Operator | Sep 2025 |
| 32 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 33 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
| 34 | J. R. Pounds, Inc. | Laurel, MS 39441 | Oil & Gas Operator | Oct 2025 |
| 35 | Jack L. Phillips Co. | Gladewater, TX 756471686 | Oil & Gas Operator | Oct 2025 |
| 36 | Kelley Industries Inc | Waynesboro, MS 39367 | Oil & Gas Operator | Jul 2005 |
| 37 | Larco Drilling & Exploration Corp. | | Oil & Gas Operator | Dec 1999 |
| 38 | Liberty Operating Company,LLC | | Oil & Gas Operator | Oct 2025 |
| 39 | Logan Oil, LLC | | Oil & Gas Operator | May 2010 |
| 40 | Lyle Cashion Co. | | Oil & Gas Operator | Sep 1989 |
| 41 | Marlin Exploration, LLC | | Oil & Gas Operator | Oct 2025 |
| 42 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 43 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | Dec 2025 |
| 44 | Midco Energy, Inc. | | Oil & Gas Operator | Dec 1992 |
| 45 | Mobil Oil Expl & Prod S E | | Oil & Gas Operator | Dec 1979 |
| 46 | Moon-Hines-Tigrett Operating Co., Inc. | | Oil & Gas Operator | Sep 2025 |
| 47 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 48 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 49 | Oglesby Oil Company | | Oil & Gas Operator | Nov 2023 |
| 50 | Oglesby Prod & Expl Co Inc | | Oil & Gas Operator | Nov 1987 |
| 51 | Osborn Heirs Co | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2025 |
| 52 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 53 | Palmer Petroleum, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 54 | Parish Operating, LLC | Covington, LA 70433 | Oil & Gas Operator | Nov 2025 |
| 55 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 56 | Petro Harvester Operating Company, LLC | | Oil & Gas Operator | Nov 2022 |
| 57 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 58 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2025 |
| 59 | Pitts, W. C. | | Oil Operator | Jan 1988 |
| 60 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 61 | PLS Operating Co, Inc. | | Oil & Gas Operator | Jul 1989 |
| 62 | Post Hole Drilling Company, LLC | | Oil & Gas Operator | Nov 2023 |
| 63 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 64 | Primal Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 65 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Nov 2025 |
| 66 | Ram Petroleum, LLC | Tylertown, MS 39667 | Oil & Gas Operator | Nov 2025 |
| 67 | Rebel Drilling Company, L. P. | | Oil & Gas Operator | Sep 2004 |
| 68 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 69 | S. Lavon Evans Jr Inc, Et Al | | Oil & Gas Operator | Jan 2010 |
| 70 | Savannah Joint Ventures | | Oil & Gas Operator | Nov 2000 |
| 71 | Savannah Oil And Gas, L. L. C. | | Oil & Gas Operator | Oct 1998 |
| 72 | Scorpion Oil & Gas, LLC | Houston, TX 77036 | Oil & Gas Operator | May 2025 |
| 73 | Shell Oil Co. -Nola | | Oil & Gas Operator | Jun 2000 |
| 74 | Signal, LLC | | Oil & Gas Operator | Oct 2025 |
| 75 | Southeastern Producing Co | | Oil Operator | Jul 1988 |
| 76 | Spooner Petroleum Company | | Oil & Gas Operator | Oct 2025 |
| 77 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Dec 2025 |
| 78 | T. K. Stanley, Inc. | | Oil & Gas Operator | Jul 1982 |
| 79 | Tellus Operating Group, LLC | | Oil & Gas Operator | Nov 2025 |
| 80 | Thaxton Operating | | Oil Operator | Jan 1994 |
| 81 | Thomas A. Blanton | | Oil Operator | Oct 2025 |
| 82 | Tiger Production Company, LLC | | Oil & Gas Operator | Aug 2021 |
| 83 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 84 | Venture Oil & Gas, Inc. | Laurel, MS 39440 | Oil & Gas Operator | Nov 2025 |
| 85 | Waco Corp | | Oil Operator | Jun 1983 |
| 86 | WLS, Inc | | Oil & Gas Operator | Nov 2025 |
| 87 | Womack Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2025 |
| 88 | Yellow Creek Operating, LLC | | Oil & Gas Operator | Oct 2025 |