| 1 | 1849 Energy Partners Oprtng, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2022 |
| 2 | 2 T Production | Bowie, TX 76230 | Oil & Gas Operator | Feb 2026 |
| 3 | 3-M Energy Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2017 |
| 4 | 3-R Production, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 5 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 6 | 5 G Resources, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 7 | 7-Iron Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 8 | A J Myers Prod. LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 9 | Aardolie Oil Company | Dallas, TX 75370 | Oil & Gas Operator | Jul 2003 |
| 10 | Aber Oil & Gas Co. | Tyler, TX 75702 | Oil & Gas Operator | Nov 2013 |
| 11 | Adexco Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 12 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 13 | Aeternum Energy, LLC | Tyler, TX 75713 | Oil & Gas Operator | Feb 2026 |
| 14 | Afe Oil & Gas Consultants | Addison, TX 75001 | Gas Operator | Jan 2003 |
| 15 | Akers & Fultz, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2003 |
| 16 | Akers, B. F. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 17 | Alamosa Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 18 | Albert, David Oil & Gas | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 19 | Allar Co., The | Graham, TX 76450 | Oil & Gas Operator | Dec 2004 |
| 20 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 21 | Ambrit Energy Corp. | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
| 22 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 23 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 24 | Aminex USA, Inc. | Somerset, TX 78069 | Oil & Gas Operator | May 2018 |
| 25 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Dec 2025 |
| 26 | Anderson, Carl T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2014 |
| 27 | Anderson, E D | Cisco, TX 76437 | Oil & Gas Operator | Nov 2009 |
| 28 | Anderson, Roger W. Corp. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2020 |
| 29 | Antle Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 30 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 31 | Apex Operating & Equip. Co. | Bowie, TX 76230 | Oil & Gas Operator | Nov 2003 |
| 32 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 33 | Archer Reef Oil Co. | Bellevue, TX 76228 | Oil & Gas Operator | Feb 2026 |
| 34 | Arcooil Corp | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2026 |
| 35 | Argosy | Carrollton, TX 75010 | Oil & Gas Operator | Aug 2003 |
| 36 | Aries Operating, LP | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 37 | Arledge & Young, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Feb 1999 |
| 38 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 39 | Armour Properties | Houston, TX 77056 | Oil & Gas Operator | May 1994 |
| 40 | Arp Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 41 | Arrowhead Productions, LP | Fort Worth, TX 76109 | Oil & Gas Operator | Feb 2026 |
| 42 | Aruba Petroleum, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Nov 2025 |
| 43 | Aruba Petroleum, LTD. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2003 |
| 44 | Ashtola Exploration Company,Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2026 |
| 45 | Aspect Abundant Shale LP | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 46 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2026 |
| 47 | Associated Operating & Explor. | Dallas, TX 75243 | Oil & Gas Operator | Feb 2026 |
| 48 | Astin Corp. | Dallas, TX 75229 | Oil & Gas Operator | Sep 1994 |
| 49 | Athena Resources, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 50 | Atlas Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 51 | Atlas Growth Texas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 52 | Atoka Energy LLC | Gainesville, TX 76241 | Oil & Gas Operator | Feb 2026 |
| 53 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Feb 2026 |
| 54 | Augustus Oil And Gas Corporation | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 55 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 56 | Ayres Oil, Inc. | Holliday, TX 76366 | Oil & Gas Operator | Aug 2003 |
| 57 | Ayres, C. D. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 58 | Aztec Petroleum Corp. | Dallas, TX 75230 | Oil & Gas Operator | Oct 1994 |
| 59 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Feb 2026 |
| 60 | B & M Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Dec 2011 |
| 61 | B M Energy, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2022 |
| 62 | B.E.G. Production | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 63 | B.O.L.D. Oil And Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 64 | Baja Production | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 65 | Bandera Petroleum, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2018 |
| 66 | Bankhead Operating Corp. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 67 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Nov 2025 |
| 68 | Barger Petroleum Co. | Irving, TX 75061 | Oil & Gas Operator | Jan 2019 |
| 69 | Barnes, Larry Petroleum, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Jul 1996 |
| 70 | Barnett, G. | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 71 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Feb 2026 |
| 72 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Feb 2026 |
| 73 | BB & D Exploration, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jan 2009 |
| 74 | Beisch & Hanna | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2026 |
| 75 | Beisch, Rusty | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2026 |
| 76 | Bell, Johnny Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 77 | Bell, O. M. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2008 |
| 78 | Bendorf Services & Supply Co | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 79 | Bennett Production Corporation | Bowie, TX 76230 | Oil & Gas Operator | Apr 2024 |
| 80 | Berry Energy Companies | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 81 | Best Petroleum Explorations,Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 82 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 83 | Big Mountain Operating LLC | Decatur, TX 76234 | Oil & Gas Operator | Feb 2026 |
| 84 | Big Rock Oil LLC | Frisco, TX 75034 | Oil Operator | Feb 2026 |
| 85 | Big Three Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 86 | Big W Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2017 |
| 87 | Birdwell Oil & Gas, L.L.C. | Bryson, TX 76427 | Oil & Gas Operator | Feb 2026 |
| 88 | Birdwell, C. E. | Bryson, TX 76427 | Oil & Gas Operator | Dec 2001 |
| 89 | Bivins, Orville J. Jr. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2004 |
| 90 | BJ Operating, Inc. | Menard, TX 76859 | Oil & Gas Operator | Feb 2026 |
| 91 | BKV North Texas, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Feb 2026 |
| 92 | Black Belt Operating, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2026 |
| 93 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Nov 2025 |
| 94 | Black Strata LLC | Weatherford, TX 76086 | Oil Operator | Feb 2026 |
| 95 | Black, Karl T. | Paradise, TX 76073 | Oil & Gas Operator | Aug 2003 |
| 96 | Blakemore, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Dec 2012 |
| 97 | Blakenergy Operating, LLC | Spring, TX 77386 | Oil & Gas Operator | Feb 2026 |
| 98 | Blevins Production LLC | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 99 | BLS Production Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 100 | Bluebonnet Land & Cattle Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |