| 1 | 375 Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2013 |
| 2 | 6 Hess, LLC | Muenster, TX 76252 | Oil Operator | May 2025 |
| 3 | Abernathy Auto, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 4 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | May 2025 |
| 5 | Addison - Graves, L.L.C. | Archer City, TX 76351 | Oil Operator | May 2025 |
| 6 | Addison, Kenneth | Archer City, TX 76351 | Oil & Gas Operator | Dec 2017 |
| 7 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 8 | Aec Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | May 2004 |
| 9 | Aeternum Energy, LLC | Nederland, TX 77627 | Oil & Gas Operator | May 2025 |
| 10 | Allen, C. L. (Doie) | Wichita Falls, TX 76309 | Oil & Gas Operator | May 2025 |
| 11 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 12 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 13 | Aog, Inc. | Norman, OK 73070 | Oil & Gas Operator | Nov 2014 |
| 14 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 15 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 16 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 17 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2010 |
| 18 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 19 | Arrowhead Productions, LP | Fort Worth, TX 76109 | Oil & Gas Operator | May 2025 |
| 20 | Aruba Petroleum, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Feb 2025 |
| 21 | Asher Resources | Boerne, TX 78006 | Oil & Gas Operator | May 2015 |
| 22 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 23 | Atex Exploration & Operating Co. | Whitesboro, TX 76273 | Oil & Gas Operator | May 2025 |
| 24 | Atkinson, Jim | Nocona, TX 76255 | Oil & Gas Operator | May 2025 |
| 25 | Atoka Energy LLC | Gainesville, TX 76241 | Oil & Gas Operator | May 2025 |
| 26 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | May 2025 |
| 27 | August Oil | Plano, TX 75093 | Oil & Gas Operator | Aug 2003 |
| 28 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | May 2025 |
| 29 | B-K Operating | Whitesboro, TX 76273 | Oil & Gas Operator | Oct 1997 |
| 30 | Barnes, Jerry B. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2006 |
| 31 | Barnhill, Monte | Muenster, TX 76252 | Oil Operator | May 2025 |
| 32 | Barrett Oil Co. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2023 |
| 33 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | May 2025 |
| 34 | Bayer, Arthur | Muenster, TX 76252 | Oil & Gas Operator | Nov 2016 |
| 35 | Bayer, J.H. & Sons Inc | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2008 |
| 36 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 37 | Benco Operating, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 38 | Bend Petroleum Corp. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2023 |
| 39 | Bennett Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 40 | Biffle, Jimmy Jack | Muenster, TX 76252 | Oil & Gas Operator | Feb 2017 |
| 41 | Big Country Pipe & Supply, Inc. | Saint Jo, TX 76265 | Oil Operator | May 2023 |
| 42 | Big Rock Oil LLC | Frisco, TX 75034 | Oil Operator | May 2025 |
| 43 | BKM Production | Gainesville, TX 76240 | Oil & Gas Operator | May 2025 |
| 44 | BKV North Texas, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | May 2025 |
| 45 | BLS Production Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 46 | Bohner Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 47 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 48 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 49 | Bra-De Oil & Gas Inc. | Montague, TX 76251 | Oil & Gas Operator | Jun 2016 |
| 50 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | May 2025 |
| 51 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 52 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 53 | Breeze Oil, LLC | Nocona, TX 76255 | Oil Operator | May 2025 |
| 54 | Breeze, James R. | Nocona, TX 76255 | Oil & Gas Operator | Nov 2017 |
| 55 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 56 | Britton Operating, Inc. | Aledo, TX 76008 | Oil & Gas Operator | May 2025 |
| 57 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 58 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 59 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | May 2025 |
| 60 | C & O Production | Nocona, TX 76255 | Oil & Gas Operator | Feb 2020 |
| 61 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 62 | Campbell, T. K. | Fort Worth, TX 76118 | Oil & Gas Operator | Mar 2006 |
| 63 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 64 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 65 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | Feb 2025 |
| 66 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 67 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2025 |
| 68 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 69 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 70 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 71 | Cico Oil & Gas Company | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 72 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 73 | Circle-S Energy, LLC | McKinney, TX 75071 | Oil & Gas Operator | May 2025 |
| 74 | Citrus Energy Corporation | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2020 |
| 75 | Claron Corporation | Houston, TX 77219 | Oil & Gas Operator | May 2025 |
| 76 | Clifton Oil | Muenster, TX 76252 | Oil & Gas Operator | Mar 2006 |
| 77 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 78 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 79 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 80 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 81 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | May 2025 |
| 82 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2025 |
| 83 | Cope Oil Company | Valley VIew, TX 76272 | Oil & Gas Operator | Feb 2015 |
| 84 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 85 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | May 2025 |
| 86 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 87 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 88 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 89 | CR Reed Production, Inc. | Gainesville, TX 76241 | Oil Operator | May 2025 |
| 90 | Crusader Energy Group Inc. | Austin, TX 78746 | Oil & Gas Operator | Mar 2015 |
| 91 | Crusader Energy Group LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2015 |
| 92 | Cso Consulting | Bridgeport, TX 76426 | Oil & Gas Operator | Mar 2020 |
| 93 | CTL Production, Inc. | Muenster, TX 76252 | Oil & Gas Operator | May 2025 |
| 94 | CVR Supply & Trading, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 95 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | May 2025 |
| 96 | D & H Oil | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2022 |
| 97 | D & N Oil Co. | Muenster, TX 76252 | Oil & Gas Operator | May 2025 |
| 98 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | May 2025 |
| 99 | D-S-B Properties, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2014 |
| 100 | Davis & Salmon | Muenster, TX 76252 | Oil & Gas Operator | Oct 2017 |