| 1 | 4W Operating, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 2 | Akers & Fultz, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2003 |
| 3 | Akers, B. F. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 4 | Allar Co., The | Graham, TX 76450 | Oil & Gas Operator | Dec 2004 |
| 5 | Allied Energy Operating, LLC | McKinney, TX 75071 | Oil Operator | Oct 2025 |
| 6 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 7 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 8 | Ameritech Oil & Gas Corporation | Dallas, TX 75248 | Oil & Gas Operator | May 1996 |
| 9 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 10 | Anderson Production | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 11 | Anderson, E D | Cisco, TX 76437 | Oil & Gas Operator | Nov 2009 |
| 12 | Antle Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 13 | Antle, E. | Graham, TX 76450 | Oil & Gas Operator | Oct 1994 |
| 14 | Apexco, Inc. | Sand Springs, OK 74063 | Oil & Gas Operator | Mar 2025 |
| 15 | Aratex Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2003 |
| 16 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 17 | Arcooil Corp | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2025 |
| 18 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 19 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2010 |
| 20 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 21 | Arrington,David H. Oil & Gas,Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 22 | Ashtola Exploration Company,Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Oct 2025 |
| 23 | At Oil & Gas, LLC | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 24 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 25 | Atwa Energy Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 1996 |
| 26 | Atwell Technical Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 27 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 28 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 29 | Azul, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 1995 |
| 30 | B & D Enterprises | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2014 |
| 31 | B-Tech. Pet., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2005 |
| 32 | B.O.L.D. Oil And Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 33 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 34 | Bacon Energy | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 35 | Ball Producing Co. | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 36 | Ballou Enterprises, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jan 1997 |
| 37 | Bam Operating, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Nov 2014 |
| 38 | Bandera Petroleum, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2018 |
| 39 | Bankhead E & P LLC | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Oct 2025 |
| 40 | Bankhead Operating Corp. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 41 | Bara Corporation | Flower Mound, TX 75027 | Oil & Gas Operator | Apr 2004 |
| 42 | Barron Petroleum LLC | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2025 |
| 43 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 44 | Baseline Oil & Gas Corp. | Houston, TX 77267 | Oil & Gas Operator | Oct 2010 |
| 45 | Bass Operating Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 1999 |
| 46 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 47 | Belcor Inc. | Irvine, CA 92714 | Oil & Gas Operator | Nov 2000 |
| 48 | Bendorf Services & Supply Co | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 49 | Bendorf, Otto Trust | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 50 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 51 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 52 | Bilmac Oil Co., Inc. | Abilene, TX 79601 | Oil & Gas Operator | Oct 2025 |
| 53 | Black Bandana LLC | Santo, TX 76472 | Oil & Gas Operator | Oct 2025 |
| 54 | Black Star Oil Company | Plano, TX 75094 | Oil & Gas Operator | Oct 2025 |
| 55 | Blackbird R 22 Og L.L.C. | Eastland, TX 76448 | Gas Operator | Oct 2025 |
| 56 | Bloxom, John Tom | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2007 |
| 57 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Oct 2025 |
| 58 | Boo-Row Pipe & Supply, Inc. | Albany, TX 76430 | Oil & Gas Operator | Jan 2007 |
| 59 | Boondocks Solutions LLC | Tomball, TX 77375 | Oil & Gas Operator | Oct 2025 |
| 60 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 61 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Oct 2025 |
| 62 | Braka Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Oct 2025 |
| 63 | Brazos River Exploration LLC | Houston, TX 77008 | Oil & Gas Operator | Oct 2024 |
| 64 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 65 | Brico Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 66 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 67 | Brightman, Tom | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 68 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 69 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 70 | Brittany Drilling Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2000 |
| 71 | Britton Operating, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 72 | Brogdon, Gary | Graham, TX 76450 | Oil & Gas Operator | Dec 2009 |
| 73 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 74 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 75 | Brown, Edmond | Loving, TX 76460 | Oil & Gas Operator | Dec 2017 |
| 76 | Brown-Wiley Producing | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2008 |
| 77 | Bruce Operating Account | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 78 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 79 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Oct 2025 |
| 80 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 81 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Oct 2025 |
| 82 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 83 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Oct 2025 |
| 84 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 85 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 86 | Burton Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 87 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 88 | Byrne, Robert E. | Lubbock, TX 79416 | Oil & Gas Operator | Jan 2005 |
| 89 | C & C Oil & Gas | Ranger, TX 76470 | Oil & Gas Operator | Oct 2025 |
| 90 | C & G Transports, Inc. | Woodson, TX 76491 | Oil & Gas Operator | Oct 2025 |
| 91 | Caddo Creek Corporation | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1994 |
| 92 | Cal-Mon Oil Company | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 93 | Cam Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2004 |
| 94 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 95 | Capco Offshore Of Texas, Inc. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 96 | Capco Offshore, Inc. | Irving, TX 75063 | Oil & Gas Operator | May 2012 |
| 97 | Caraway, Robert | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 98 | Caraway, Robert R. | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 99 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Oct 2025 |
| 100 | Casteel, Hoyt F. | Graham, TX 76450 | Oil & Gas Operator | Nov 2001 |