| 1 | 9K Investments LLC | Cisco, TX 76437 | Oil & Gas Operator | Nov 2024 |
| 2 | A.E.N. Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jan 1996 |
| 3 | Alaron Energy, Inc. | Irving, TX 75038 | Oil & Gas Operator | Nov 2024 |
| 4 | Americo Energy Resources, LLC | Houston, TX 77063 | Oil & Gas Operator | Nov 2024 |
| 5 | Anderson, Carl T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2014 |
| 6 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 7 | Arp Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 8 | Ashbrook Oil Co. | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2020 |
| 9 | Athena Resources, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Nov 2024 |
| 10 | Atlas Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 11 | Austin Energy Operations, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Nov 2024 |
| 12 | Ballou Enterprises, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jan 1997 |
| 13 | Baron Energy Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Nov 2024 |
| 14 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Nov 2024 |
| 15 | BKV North Texas, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Nov 2024 |
| 16 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2024 |
| 17 | Blackwater Oil & Gas Corporation | Colleyville, TX 76034 | Oil & Gas Operator | May 2018 |
| 18 | Bluestone Natural Res. II, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 19 | Boo-Row Pipe & Supply, Inc. | Albany, TX 76430 | Oil & Gas Operator | Jan 2007 |
| 20 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 21 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 22 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2024 |
| 23 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 24 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Nov 2024 |
| 25 | Carrizo Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 26 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Nov 2024 |
| 27 | Castlerock Oil Company, Inc. | Addison, TX 75001 | Oil & Gas Operator | Feb 2006 |
| 28 | CDX Gas, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2009 |
| 29 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Nov 2024 |
| 30 | Certified Petroleum Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2006 |
| 31 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Sep 2024 |
| 32 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 33 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 34 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2024 |
| 35 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Nov 2024 |
| 36 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 37 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 38 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 39 | Crown Equipment Co. | Weatherford, TX 76086 | Oil & Gas Operator | Nov 2024 |
| 40 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2024 |
| 41 | D.J. & T. Energy | Abilene, TX 79601 | Oil & Gas Operator | Nov 2024 |
| 42 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 43 | Decleva, Paul | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2020 |
| 44 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2024 |
| 45 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2024 |
| 46 | Devon Gas Services, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2023 |
| 47 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Nov 2024 |
| 48 | DMV Pipeline LLC | Plano, TX 75074 | Oil & Gas Operator | Nov 2024 |
| 49 | Dogwood Operating Company, Inc. | Houston, TX 77069 | Oil & Gas Operator | Nov 2024 |
| 50 | Double Eagle Petroleum Corp | Evansville, IN 47725 | Oil & Gas Operator | Nov 2024 |
| 51 | Dte Gas Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2007 |
| 52 | Dte Gas Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2014 |
| 53 | Dual Quiver Oil & Gas Op, LLC | Flower Mound, TX 75027 | Oil & Gas Operator | Nov 2024 |
| 54 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Nov 2024 |
| 55 | Eastland Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Nov 2024 |
| 56 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 57 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 58 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 59 | EP Operating Limited Partnership | Dallas, TX 75201 | Oil & Gas Operator | Feb 1995 |
| 60 | Evarado Oil Company | Strawn, TX 76475 | Oil & Gas Operator | Nov 2024 |
| 61 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2024 |
| 62 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 63 | Foree Oil Company | Terrell, TX 75160 | Oil & Gas Operator | Nov 2024 |
| 64 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 65 | Fred Underwood, LLC | Dallas, TX 75230 | Oil & Gas Operator | Nov 2024 |
| 66 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Nov 2024 |
| 67 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 68 | Gaylyn, Inc. | Comanche, TX 76442 | Oil & Gas Operator | Nov 2024 |
| 69 | Great Northern Energy, Inc | Irving, TX 75039 | Oil & Gas Operator | Nov 2024 |
| 70 | Greenhaw, Morris R Oil & Gas Inc | Desdemona, TX 76445 | Oil & Gas Operator | May 2006 |
| 71 | Greenhaw, Morris R. | Desdemona, TX 76445 | Oil & Gas Operator | Nov 2024 |
| 72 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 73 | H.A.N. Operating Incorporated | Clyde, TX 79510 | Oil & Gas Operator | Aug 2016 |
| 74 | Halek Energy L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Jan 2014 |
| 75 | Hanks, Christopher Glenn | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2024 |
| 76 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 77 | Herod, Bill | Ranger, TX 76470 | Oil & Gas Operator | Apr 2022 |
| 78 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2024 |
| 79 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Nov 2024 |
| 80 | Hill Operating LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2023 |
| 81 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 82 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 83 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 84 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Nov 2024 |
| 85 | Infinity Oil & Gas Of TX, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Nov 2024 |
| 86 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Nov 2024 |
| 87 | Ipr Energy Partners, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Aug 2014 |
| 88 | Ipr Energy Partners, LLC | Bowie, TX 76230 | Oil & Gas Operator | Nov 2024 |
| 89 | J-Tec Operating, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2024 |
| 90 | J-Tec Production, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2024 |
| 91 | Jilpetco, Inc. | Fort Worth, TX 76121 | Oil & Gas Operator | Nov 2024 |
| 92 | JM Investments, L.L.C. | Cross Plains, TX 76443 | Oil & Gas Operator | Nov 2024 |
| 93 | Johnson, William D. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2008 |
| 94 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 95 | Kuhn Oil Co Inc | Timber Lake, SD 57656 | Oil Operator | Dec 2023 |
| 96 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2024 |
| 97 | Lexgas, Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Nov 2024 |
| 98 | Lockout Corporation | Austin, TX 78746 | Oil & Gas Operator | Nov 2024 |
| 99 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 100 | Lyon Energy, Inc. | Plano, TX 75075 | Oil & Gas Operator | Feb 2000 |