| 1 | Arkansas Oklahoma Gas Corporation | Fort Smith, AR 72917 | Oil & Gas Operator | Aug 2022 |
| 2 | Bay Oaks Resources LLC | | Gas Operator | Feb 2018 |
| 3 | Bowman & Cains Exploration, LLC | | Gas Operator | Sep 2020 |
| 4 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2024 |
| 5 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2023 |
| 6 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 7 | Continental Shale, LLC | Mountain Home, AR 72653 | Gas Operator | Mar 2024 |
| 8 | Cross Timbers Operating Inc | | Gas Operator | Jul 2001 |
| 9 | Crow Creek Operating Co II LLC | Houston, TX 77252 | Oil & Gas Operator | Nov 2011 |
| 10 | Daniel Mineral Development, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2010 |
| 11 | Eagle Rock Mid-Continent Operating LLC | Tulsa, OK 74103-3703 | Oil & Gas Operator | Dec 2023 |
| 12 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 13 | Exok, Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2023 |
| 14 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 15 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 16 | Fort Operating Company | Fort Smith, AR 72923 | Gas Operator | Nov 2018 |
| 17 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 18 | Freedom Energy Inc | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Apr 2024 |
| 19 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Jan 2024 |
| 20 | Highland Oil & Gas LLC | Houston, TX 77079-7220 | Oil & Gas Operator | Feb 2015 |
| 21 | Hogback Exploration Inc | Fort Smith, AR 72916 | Oil & Gas Operator | Dec 2023 |
| 22 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |
| 23 | Keeler Investment GP., LLC | Burneyville, OK 73430 | Gas Operator | Mar 2024 |
| 24 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 25 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2024 |
| 26 | Max Extract Technologies, LLC | Oklahoma City, OK 73105 | Gas Operator | Dec 2023 |
| 27 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jan 2024 |
| 28 | Miller, R. A. Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2023 |
| 29 | MMGK Arkoma, LLC | Dallas, TX 75240 | Gas Operator | Jan 2024 |
| 30 | Mueller, Thomas C Inc | | Gas Operator | Dec 2004 |
| 31 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 32 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2017 |
| 33 | Oxley Energy LLC | Houston, TX 77042 | Gas Operator | Dec 2023 |
| 34 | Oxley Petroleum Co | Oklahoma City, OK 73118-1044 | Oil & Gas Operator | Sep 2017 |
| 35 | Ozark Oil & Gas, Inc | | Gas Operator | May 2018 |
| 36 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 37 | Philmon, Doyle | Magazine, AR 72943 | Gas Operator | Jan 2024 |
| 38 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 39 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 40 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Jan 2024 |
| 41 | Ross Explorations, Inc | Fort Smith, AR 72903 | Gas Operator | Jan 2024 |
| 42 | Rusk County Well Service, Inc | Kilgore, TX 75662 | Gas Operator | Dec 2023 |
| 43 | Sagely, Floyd E Properties, LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 44 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 45 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 46 | Sedna Energy, Inc | | Gas Operator | Nov 2011 |
| 47 | Seeco | | Gas Operator | Jul 2016 |
| 48 | Seeco, Inc. | | Gas Operator | Sep 2015 |
| 49 | Shamrock Well Operations LLC | | Oil & Gas Operator | Jan 2024 |
| 50 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 51 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2024 |
| 52 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Jan 2024 |
| 53 | Stone Oak Operating, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jan 2024 |
| 54 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 55 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2024 |
| 56 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2021 |
| 57 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Dec 2023 |
| 58 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Apr 2024 |
| 59 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 60 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 61 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Apr 2024 |