| 1 | 1859 Operating LLC | Dripping SPGS, TX 78620 | Oil Operator | May 2025 |
| 2 | 338 Oil & Gas, Inc. | Devine, TX 78016 | Oil Operator | Feb 2021 |
| 3 | 3B Ranch | Houston, TX 77035 | Oil Operator | May 2025 |
| 4 | 907 Oil LLC | | Oil Operator | May 2025 |
| 5 | Aaa Oil Company | Castroville, TX 78009 | Oil & Gas Operator | May 2025 |
| 6 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | May 2025 |
| 7 | Ackerman, Albert C. | Boerne, TX 78006 | Oil & Gas Operator | Oct 1995 |
| 8 | Activa Resources, LLC | San Antonio, TX 78205 | Oil & Gas Operator | May 2025 |
| 9 | Activa Resources, LTD. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 2008 |
| 10 | Amelia Exploration LLC | Rowlett, TX 75088 | Oil Operator | May 2025 |
| 11 | American Eagle Resources, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | May 2025 |
| 12 | Aminex USA, Inc. | Somerset, TX 78069 | Oil & Gas Operator | May 2018 |
| 13 | Asher Resources | Boerne, TX 78006 | Oil & Gas Operator | May 2015 |
| 14 | Atkinson, Clifford III | San Antonio, TX 78217 | Oil & Gas Operator | Dec 1996 |
| 15 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 16 | Aztec Drilling & Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2015 |
| 17 | Barnes, K. A. | Somerset, TX 78069 | Oil & Gas Operator | Jan 2013 |
| 18 | Barnett Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | May 2025 |
| 19 | Barrett Brothers Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2020 |
| 20 | Baxter, D. B. Inc. | Midland, TX 79708 | Oil & Gas Operator | May 2025 |
| 21 | Benchmark Texas Petroleum, LLC. | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 22 | Beta Oil Corporation | San Antonio, TX 78232 | Oil & Gas Operator | May 2025 |
| 23 | Black Creek Oil Company, LLC | Yancey, TX 78886 | Oil Operator | May 2025 |
| 24 | Black Jack Well Service, Inc. | Somerset, TX 78069 | Oil & Gas Operator | Aug 2003 |
| 25 | Black Mac Oil, Inc. | Hondo, TX 78861 | Oil Operator | May 2025 |
| 26 | Briar Hollow Energy Company | Portland, TX 78374 | Oil & Gas Operator | May 2025 |
| 27 | Brymer Contracting Incorporated | Pleasanton, TX 78064 | Oil & Gas Operator | May 2025 |
| 28 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 29 | Cal Oil Company | Missouri City, TX 77459 | Oil Operator | May 2022 |
| 30 | Calfas Cattle & Oil, LLC | San Antonio, TX 78205 | Oil & Gas Operator | May 2025 |
| 31 | Calk, Roger D. | Lytle, TX 78052 | Oil & Gas Operator | May 2025 |
| 32 | Caltex Energy Co. | Luling, TX 78648 | Oil & Gas Operator | May 2025 |
| 33 | Cardinal Energy Company | Rowlett, TX 75088 | Oil & Gas Operator | May 2025 |
| 34 | Carter, Shirley Oil Co | Round Rock, TX 78665 | Oil & Gas Operator | Jun 2018 |
| 35 | Caspen Operating Company | Somerset, TX 78069 | Oil & Gas Operator | Mar 2008 |
| 36 | CBR Oil Company | Lytle, TX 78052 | Oil & Gas Operator | Jul 1997 |
| 37 | CG Oil Co. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2011 |
| 38 | Chessher, Otto Drilling Company | Kearney, MO 64060 | Oil & Gas Operator | Dec 2013 |
| 39 | Chicken Coop, Inc., The | Hondo, TX 78861 | Oil & Gas Operator | Jan 2015 |
| 40 | Cibolo Energy Operating, Inc. | Bulverde, TX 78163 | Oil & Gas Operator | May 2025 |
| 41 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 42 | Civron Petroleum Res., LLC | San Antonio, TX 78229 | Oil & Gas Operator | May 2025 |
| 43 | Clamp Operating Incorporated | San Antonio, TX 78264 | Oil & Gas Operator | Mar 2011 |
| 44 | Clipper Operating Co., Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 2000 |
| 45 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 46 | Cooke Energy Company | San Antonio, TX 78250 | Oil & Gas Operator | Jul 2012 |
| 47 | Creative Oil And Gas Op II, LLC | San Antonio, TX 78246 | Oil Operator | May 2025 |
| 48 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | May 2025 |
| 49 | D & B Energy Corporation | San Antonio, TX 78264 | Oil Operator | May 2025 |
| 50 | Delgado, Emil A | San Antonio, TX 78223 | Oil & Gas Operator | Sep 2016 |
| 51 | Delta Exploration, LLC | Fredericksbrg, TX 78624 | Oil Operator | May 2025 |
| 52 | Denpac Corporation | Colorado SPGS, CO 80922 | Oil & Gas Operator | May 2025 |
| 53 | Diamond Energy Services, LP | Tulsa, OK 74103 | Oil Operator | May 2025 |
| 54 | Dolphin Petroleum | Alice, TX 78333 | Oil & Gas Operator | Jun 2008 |
| 55 | Downing Well Service, Inc. | Devine, TX 78016 | Oil & Gas Operator | May 2025 |
| 56 | E.A.T.E. Operating | Natalia, TX 78059 | Oil & Gas Operator | May 2025 |
| 57 | Emerald Bay Energy, Inc. | San Antonio, TX 78230 | Oil Operator | May 2025 |
| 58 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | May 2025 |
| 59 | Energy Corporation Of America | Charleston, WV 25311 | Oil & Gas Operator | Dec 2023 |
| 60 | Everett Oil | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2015 |
| 61 | Everett Oil, Inc. | San Antonio, TX 78258 | Oil Operator | May 2025 |
| 62 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | May 2025 |
| 63 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | May 2025 |
| 64 | Faseler, Herb | Hondo, TX 78861 | Oil Operator | May 2025 |
| 65 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 66 | Finger Oil & Gas, Inc. | Castroville, TX 78009 | Oil & Gas Operator | May 2021 |
| 67 | Four Forty One Oil Co. | Natalia, TX 78059 | Oil & Gas Operator | May 2025 |
| 68 | Fuego Energy, LLC | Fort Worth, TX 76136 | Oil Operator | May 2025 |
| 69 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 70 | Genie Oil Company | Devine, TX 78016 | Oil & Gas Operator | May 2025 |
| 71 | Genie Oil Company "A" | Devine, TX 78016 | Oil Operator | Dec 2021 |
| 72 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | May 2025 |
| 73 | Gould Energy Co. | Owasso, OK 74055 | Oil & Gas Operator | Mar 2005 |
| 74 | Grothues, G B Oil | Natalia, TX 78059 | Oil Operator | May 2025 |
| 75 | Hardin, W.V. Estate | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2002 |
| 76 | Hardwick, Ross H. Oil Company | Devine, TX 78016 | Oil & Gas Operator | May 2025 |
| 77 | Harmony Drilling Company, Inc. | Denver, CO 80222 | Oil & Gas Operator | Nov 2016 |
| 78 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 79 | Herber, Carl R. | Denton, TX 76205 | Oil & Gas Operator | Apr 2014 |
| 80 | Holloway Oil Company | Austin, TX 78764 | Oil & Gas Operator | Feb 2004 |
| 81 | Hughes, Dan A. Company | Beeville, TX 78104 | Oil & Gas Operator | May 2006 |
| 82 | Impetro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2020 |
| 83 | J-Bar Oil Company | Somerset, TX 78069 | Oil & Gas Operator | Nov 2011 |
| 84 | Jay-Dee Operating Company | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Aug 2000 |
| 85 | JB Oil & Gas Well Service | Dilley, TX 78017 | Oil & Gas Operator | May 2025 |
| 86 | Jca Oil Co. | Houston, TX 77035 | Oil Operator | May 2025 |
| 87 | Jenex Operating Company Of Texas | Denver, CO 80209 | Oil & Gas Operator | Aug 2003 |
| 88 | Jenex Petroleum Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | May 2025 |
| 89 | Jennings Exploration Company | Beeville, TX 78102 | Oil & Gas Operator | Feb 2024 |
| 90 | JM Calk Operating, LLC | Lytle, TX 78052 | Oil Operator | May 2025 |
| 91 | Jupiter Energy LLC | Richmond, TX 77469 | Oil Operator | May 2025 |
| 92 | K Oil Company | Houston, TX 77005 | Oil & Gas Operator | May 2025 |
| 93 | K.A. Barnes Oil & Gas Oper, LLC | Somerset, TX 78069 | Oil Operator | May 2025 |
| 94 | Klaeger Operating Company II,LLC | Marble Falls, TX 78654 | Oil Operator | May 2025 |
| 95 | Klaeger Operating Company, LLC | Marble Falls, TX 78654 | Oil Operator | May 2025 |
| 96 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 97 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 98 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 99 | Landmen Of Texas | Hondo, TX 78861 | Oil Operator | Feb 2007 |
| 100 | Landmen Of Texas, Inc. | Hondo, TX 78861 | Oil Operator | Dec 2016 |