| 1 | 2 R Operating Co. | Paradise, TX 76073 | Oil & Gas Operator | Dec 2017 |
| 2 | 3 B Enterprises, Inc. | Gordon, TX 76453 | Oil & Gas Operator | Dec 2025 |
| 3 | 3-R Production, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 4 | 4W Operating, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 5 | 9K Investments LLC | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 6 | Abx Oil & Gas, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 7 | Adexco Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 8 | Adkins, Michael H. | Austin, TX 78747 | Oil & Gas Operator | Dec 2025 |
| 9 | Akers & Fultz, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2003 |
| 10 | Akers, B. F. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 11 | Albert, David Oil & Gas | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 12 | Albert-Bishop Exploration Co Inc | Dallas, TX 75240 | Oil & Gas Operator | Feb 2007 |
| 13 | Alpine Petroleum | Abilene, TX 79608 | Oil & Gas Operator | Jul 2018 |
| 14 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 15 | American West Resources, Inc | Fort Worth, TX 76161 | Oil & Gas Operator | Dec 2025 |
| 16 | Americo Energy Resources, LLC | Houston, TX 77063 | Oil & Gas Operator | Dec 2025 |
| 17 | Ameritech Oil & Gas Corporation | Dallas, TX 75248 | Oil & Gas Operator | May 1996 |
| 18 | Anderson Production | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 19 | Anderson, Carl T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2014 |
| 20 | Anderson, E D | Cisco, TX 76437 | Oil & Gas Operator | Nov 2009 |
| 21 | Ando Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 1998 |
| 22 | Antle Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 23 | Archer Petroleum | Frisco, TX 75034 | Oil & Gas Operator | Aug 2021 |
| 24 | Arledge & Young, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Feb 1999 |
| 25 | Arnot Oil Company, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 26 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 27 | Arrowhead Productions, LP | Fort Worth, TX 76109 | Oil & Gas Operator | Dec 2025 |
| 28 | Asher Resources | Boerne, TX 78006 | Oil & Gas Operator | May 2015 |
| 29 | Aspect Abundant Shale LP | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 30 | Assent Energy Partners, LLC | College Sta, TX 77840 | Oil & Gas Operator | Dec 2025 |
| 31 | Athena Resources, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Dec 2025 |
| 32 | Atlas Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 33 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 34 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 35 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 36 | Austex Energy, Inc. | Granbury, TX 76048 | Oil & Gas Operator | Apr 1993 |
| 37 | Austral Oil Company Incorporated | Sulphur, LA 70663 | Oil & Gas Operator | Mar 2008 |
| 38 | B.O.L.D. Oil And Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 39 | Bacon Energy | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 40 | Baja Production | Bridgeport, TX 76426 | Oil & Gas Operator | Dec 2025 |
| 41 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Dec 2025 |
| 42 | Ball Producing Co. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2025 |
| 43 | Bandera Petroleum, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2018 |
| 44 | Banks, R. C. | Midland, TX 79702 | Oil & Gas Operator | Apr 2016 |
| 45 | Bara Corporation | Flower Mound, TX 75027 | Oil & Gas Operator | Apr 2004 |
| 46 | Barron Petroleum LLC | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2025 |
| 47 | Basal Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Dec 2025 |
| 48 | Bedford Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 49 | Bell, O. M. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2008 |
| 50 | Berry Energy Companies | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 51 | Best Petroleum Explorations,Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 52 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 53 | Big Star Exploration | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 2025 |
| 54 | Bivins, Orville J. Jr. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2004 |
| 55 | BKV North Texas, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Dec 2025 |
| 56 | Black Bandana LLC | Santo, TX 76472 | Oil & Gas Operator | Dec 2025 |
| 57 | Blackbird R 22 Og L.L.C. | Eastland, TX 76448 | Gas Operator | Dec 2025 |
| 58 | Blue Oil, Inc. | Burnet, TX 78611 | Oil & Gas Operator | Dec 2025 |
| 59 | Bluestem Resources LLC | Kerrville, TX 78028 | Oil & Gas Operator | Dec 2025 |
| 60 | Bootstrap Exploration, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Jun 2021 |
| 61 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 62 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 63 | Bradley, John W. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 64 | Braka Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Dec 2025 |
| 65 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 66 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 67 | Brazos Operating LLC | Midland, TX 79710 | Gas Operator | Dec 2025 |
| 68 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 69 | Brigadier Operating, LLC | Plano, TX 75024 | Oil & Gas Operator | Aug 2017 |
| 70 | Brightman Family Trust | Graham, TX 76450 | Oil & Gas Operator | Dec 2009 |
| 71 | Brock, Leo Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 72 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 73 | Brown, Darryl Operating L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 74 | Bubenik, Ronnie, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Dec 2025 |
| 75 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2025 |
| 76 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 77 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Dec 2025 |
| 78 | Burton Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 79 | C S J, Inc. | Austin, TX 78716 | Oil & Gas Operator | Dec 2025 |
| 80 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Aug 2025 |
| 81 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 82 | Caribou Operating Co. | Granbury, TX 76048 | Oil & Gas Operator | Mar 2010 |
| 83 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 84 | Carter, Mattye Family Trust | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2002 |
| 85 | Carter, Mattye L., Estate Of | Gladewater, TX 75647 | Oil & Gas Operator | Feb 1995 |
| 86 | Case Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 87 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Dec 2025 |
| 88 | CDX Gas, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2009 |
| 89 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 90 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Dec 2025 |
| 91 | Centurion Oil & Gas Op. Co. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 1998 |
| 92 | Century Petroleum, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 93 | Certified Petroleum Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2006 |
| 94 | Chalker Energy Management II,LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 95 | Chalker Energy Management,LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 96 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 97 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Aug 2025 |
| 98 | Chanze Oil Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 99 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 100 | Chestnut Mountain Energy, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Dec 2025 |