| 1 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 2 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 3 | 84 Energy LLC | Sugar Land, TX 77487 | Oil & Gas Operator | Sep 2025 |
| 4 | Amoco Production Co-Ratliff City | Ratliff City, OK 73081 | Oil Operator | May 1998 |
| 5 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 6 | Atkins Oil L.C. | Conroe, TX 77303 | Oil Operator | Sep 2025 |
| 7 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Sep 2025 |
| 8 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Sep 2025 |
| 9 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 10 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Sep 2025 |
| 11 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 12 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Sep 2025 |
| 13 | C. W. Resources, Inc. | Longview, TX 75604 | Oil & Gas Operator | Sep 2025 |
| 14 | Cali Crude LLC | Austin, TX 78738 | Oil Operator | Sep 2025 |
| 15 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 16 | Classic Oil & Gas, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jan 2004 |
| 17 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 18 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 19 | D-S-B Properties, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2014 |
| 20 | Don-Dale, Inc. | Clarksville, TX 75426 | Oil & Gas Operator | Aug 2003 |
| 21 | Embassy Well Service, LLC | Carrollton, TX 75011 | Oil & Gas Operator | Sep 2025 |
| 22 | Empire Oil Company | Coppell, TX 75019 | Oil & Gas Operator | Sep 2025 |
| 23 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | Sep 2025 |
| 24 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2024 |
| 25 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 26 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 27 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 28 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2025 |
| 29 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Sep 2025 |
| 30 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 31 | Genesis Producing Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2007 |
| 32 | Gill Oil Company, LP | White Oak, TX 75693 | Oil Operator | Sep 2025 |
| 33 | Goldsmith, J. Paul | Tyler, TX 75711 | Oil & Gas Operator | Feb 1997 |
| 34 | Grayrock Corp., The | Dallas, TX 75243 | Oil & Gas Operator | Dec 1999 |
| 35 | Grayson Petroleum Company | Whitesboro, TX 76273 | Oil & Gas Operator | Sep 2025 |
| 36 | Grizzle, Joe B. | Paris, TX 75461 | Oil & Gas Operator | Sep 2025 |
| 37 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 38 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 39 | J B Energy, Inc. | Denton, TX 76206 | Oil & Gas Operator | Aug 2018 |
| 40 | Jaco, Troy Inc. | Sherman, TX 75091 | Oil & Gas Operator | Sep 2025 |
| 41 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 42 | King Ranch Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 43 | King Ranch Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 1997 |
| 44 | LCT Energy, LP | Lewisville, AR 71845 | Oil & Gas Operator | Sep 2025 |
| 45 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 46 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 47 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Sep 2025 |
| 48 | Meridian Oil Production Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 2024 |
| 49 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 50 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Sep 2025 |
| 51 | Newfield Expl. Mid-Con. Inc | Tulsa, OK 74172 | Oil & Gas Operator | Jan 2015 |
| 52 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 53 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 54 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 55 | Prevost Operating, L.L.C. | Kilgore, TX 75663 | Oil Operator | Dec 1998 |
| 56 | Ranger Investments, Inc. | Longview, TX 75605 | Oil & Gas Operator | Oct 2006 |
| 57 | Reeder, Wendell A. | Kilgore, TX 75663 | Oil Operator | Jul 2013 |
| 58 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2025 |
| 59 | S.E.D.I. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2015 |
| 60 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 61 | Schlachter Operating Corporation | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 62 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 63 | Schlachter, David A., Estate Of | Dallas, TX 75225 | Oil & Gas Operator | Jan 2000 |
| 64 | SDG Operating Company, Inc | Tyler, TX 75701 | Oil & Gas Operator | Sep 2025 |
| 65 | SFM Holdings, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 1995 |
| 66 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |
| 67 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 68 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 69 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Sep 2025 |
| 70 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |
| 71 | St. Mary Energy Company | Houston, TX 77079 | Oil & Gas Operator | Aug 2008 |
| 72 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 73 | Taubert & Steed | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2001 |
| 74 | Technology & Engr. Careers Inc. | Houston, TX 77063 | Oil Operator | Dec 2017 |
| 75 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 76 | Texas Royalty Corp. | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 77 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Sep 2025 |
| 78 | Townes, Don | Clarksville, TX 75426 | Oil & Gas Operator | Sep 2025 |
| 79 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 80 | United Oil & Minerals, Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2001 |
| 81 | Via, James R. | Talco, TX 75487 | Oil & Gas Operator | Sep 2025 |
| 82 | Weeks Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 83 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |
| 84 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |