| 1 | Bay Oaks Resources LLC | Fort Smith, AR 72913-3129 | Gas Operator | Feb 2018 |
| 2 | Bech Oil & Gas | Lowell, AR 72745 | Gas Operator | Jun 2024 |
| 3 | Bravo Natural Resources, Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 4 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2024 |
| 5 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Aug 2024 |
| 6 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2024 |
| 7 | Cravens Oil Co | | Gas Operator | Dec 2004 |
| 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 | Exok, Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 11 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
| 12 | Freedom Energy Inc | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2024 |
| 13 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 14 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Sep 2024 |
| 15 | Hogback Exploration Inc | Fort Smith, AR 72916 | Oil & Gas Operator | Oct 2024 |
| 16 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
| 17 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 18 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 19 | Max Extract Technologies, LLC | Oklahoma City, OK 73105 | Gas Operator | Jun 2024 |
| 20 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Aug 2024 |
| 21 | MMGK Arkoma, LLC | Dallas, TX 75240 | Gas Operator | Jun 2024 |
| 22 | Mueller, Thomas C Inc | | Gas Operator | Dec 2004 |
| 23 | Mueller, Thomas C, Of Crawford County Inc | | Gas Operator | Dec 2004 |
| 24 | Mulberry Oil & Gas, LLC | Mulberry, AR 72947 | Gas Operator | Jun 2024 |
| 25 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Dec 2024 |
| 26 | Oxley Energy LLC | Houston, TX 77042 | Gas Operator | Oct 2024 |
| 27 | Ozark Oil & Gas, Inc | | Gas Operator | May 2018 |
| 28 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 29 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
| 30 | Rampart Resources Company, LLC | | Gas Operator | Jan 2021 |
| 31 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 32 | Rebel Exploration Inc | | Gas Operator | Jul 2015 |
| 33 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 34 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Oct 2024 |
| 35 | Rock Creek Energy, LLC | Fort Smith, AR 72901 | Gas Operator | Jun 2024 |
| 36 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 37 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 38 | Sedna Energy, Inc | | Gas Operator | Nov 2011 |
| 39 | Seeco | | Gas Operator | Jul 2016 |
| 40 | Seeco, Inc. | | Gas Operator | Sep 2015 |
| 41 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 42 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2024 |
| 43 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
| 44 | Stone Oak Operating, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Sep 2024 |
| 45 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 46 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Sep 2024 |
| 47 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Dec 2024 |
| 48 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 49 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
| 50 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Oct 2024 |