| 1 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 2 | 4-M Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jun 2015 |
| 3 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 4 | Akins Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 5 | Alexander Resources, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 2026 |
| 6 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 7 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 8 | Anathema, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Dec 1994 |
| 9 | Anderson, Carl T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2014 |
| 10 | Angelo, Ernest, Jr. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 11 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Apr 2026 |
| 12 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 13 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 14 | Atnipp, H. L. | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 15 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2026 |
| 16 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 17 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 18 | Barbee, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 19 | Barnett Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 1999 |
| 20 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Apr 2026 |
| 21 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 22 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 23 | Bbe Production Co. | Haskell, TX 79521 | Oil & Gas Operator | May 1997 |
| 24 | Bbe Production, LLC | Haskell, TX 79521 | Oil Operator | Apr 2026 |
| 25 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 26 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 27 | Benson Mineral Group, Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 28 | Best Petroleum Explorations,Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2026 |
| 29 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 30 | Bitter Creek Petroleum Co. | Knox City, TX 79529 | Oil & Gas Operator | Apr 2026 |
| 31 | Bloomer & Associates, Inc. | Lago VIsta, TX 78645 | Oil & Gas Operator | Jul 2002 |
| 32 | BMBD Enterprises, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2026 |
| 33 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 34 | Borders, Delbert L. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2019 |
| 35 | Bowerman Oil & Gas, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Apr 2026 |
| 36 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 37 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 38 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 39 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 40 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 41 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 42 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 43 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Apr 2026 |
| 44 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 45 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 46 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 47 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 48 | CDJ Oil Company, LLC | Albany, TX 76430 | Oil & Gas Operator | Apr 2026 |
| 49 | Chap Operating, Inc. | Knox City, TX 79529 | Oil & Gas Operator | Apr 2026 |
| 50 | China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2010 |
| 51 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2026 |
| 52 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 53 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 54 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 55 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 56 | Cooper, Glenn W. Oil & Gas | Seymour, TX 76380 | Oil & Gas Operator | Feb 2000 |
| 57 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 58 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2026 |
| 59 | Cra-Gro Crop Service, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 60 | Crego Exploration | Dallas, TX 75243 | Oil & Gas Operator | Apr 2026 |
| 61 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Apr 2026 |
| 62 | Crocker Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Aug 1999 |
| 63 | Cundiff Operating Company | Dallas, TX 75238 | Oil & Gas Operator | Apr 2026 |
| 64 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Apr 2026 |
| 65 | D.J. & T. Energy | Abilene, TX 79601 | Oil & Gas Operator | Apr 2026 |
| 66 | D.J.F. Services, Inc. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2026 |
| 67 | Dalen Resources Oil & Gas Co | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 68 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Apr 2026 |
| 69 | Decleva, Paul | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2020 |
| 70 | Dedica Energy Corporation | Mattoon, IL 61938 | Oil & Gas Operator | Mar 2008 |
| 71 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2026 |
| 72 | Delwintex Oil & Gas Prop., Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Aug 2003 |
| 73 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 74 | Double M Petroproperties, Inc. | Haskell, TX 79521 | Oil & Gas Operator | Apr 2026 |
| 75 | Dynamic Production, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 76 | Edington Oil Company | Albany, TX 76430 | Oil & Gas Operator | Aug 2006 |
| 77 | Efficiency Operating Service | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 78 | Energex Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2026 |
| 79 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | Jan 2026 |
| 80 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 81 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 82 | Enrich Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 2026 |
| 83 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 84 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 85 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 86 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 87 | Farmer, Lewis & Hayden | Olney, TX 76374 | Oil & Gas Operator | Oct 2008 |
| 88 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Apr 2026 |
| 89 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Apr 2026 |
| 90 | Friendly Energy Services, Inc. | Corpus Christ, TX 78410 | Oil & Gas Operator | Apr 2026 |
| 91 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Apr 2026 |
| 92 | Gage, H. L. | Windthorst, TX 76389 | Oil & Gas Operator | May 2005 |
| 93 | Gas Corporation Of America | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 94 | GBG Operating Corp. | Wichita Falls, TX 76302 | Oil & Gas Operator | Sep 1998 |
| 95 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 96 | Gillring Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 1994 |
| 97 | Golden Resources Corporation | Dallas, TX 75238 | Oil & Gas Operator | Dec 1998 |
| 98 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 99 | Great American Resources Inc. | Bowie, TX 76230 | Oil & Gas Operator | Apr 2026 |
| 100 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |