| 1 | Bay Oaks Resources LLC | Fort Smith, AR 72913-3129 | Gas Operator | Feb 2018 |
| 2 | Brown, B J | Tulsa, OK 74133 | Gas Operator | Feb 2008 |
| 3 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 4 | Cross Timbers Operating Inc | | Gas Operator | Jul 2001 |
| 5 | Crow Creek Operating Co II LLC | Houston, TX 77252 | Oil & Gas Operator | Nov 2011 |
| 6 | Eagle Rock Mid-Continent Operating LLC | Tulsa, OK 74103-3703 | Oil & Gas Operator | Aug 2024 |
| 7 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Sep 2024 |
| 8 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Nov 2024 |
| 9 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Aug 2024 |
| 10 | Highland Oil & Gas LLC | Houston, TX 77079-7220 | Oil & Gas Operator | Feb 2015 |
| 11 | L & L Energy Company | Huntington, AR 72940 | Oil & Gas Operator | May 2024 |
| 12 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2024 |
| 13 | M & P Exploration, Inc. | | Gas Operator | Nov 2017 |
| 14 | Max Extract Technologies, LLC | Oklahoma City, OK 73105 | Gas Operator | Jun 2024 |
| 15 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jul 2024 |
| 16 | Oxley Energy LLC | Houston, TX 77042 | Gas Operator | Sep 2024 |
| 17 | Potoco, LLC | | Gas Operator | Apr 2012 |
| 18 | Pruitt Tool Gas Department | | Gas Operator | Jan 2008 |
| 19 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Sep 2024 |
| 20 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 21 | Sedna Energy, Inc | | Gas Operator | Nov 2011 |
| 22 | Seeco | | Gas Operator | Jul 2016 |
| 23 | Seeco, Inc. | | Gas Operator | Sep 2015 |
| 24 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2021 |
| 25 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Jul 2024 |
| 26 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |