| 1 | Alegre Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Jul 2025 |
| 2 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Jul 2025 |
| 3 | Arcadia Expl. & Prod. Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2011 |
| 4 | Arcadia Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Jul 2025 |
| 5 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Jul 2025 |
| 6 | Blazer Resources, Inc. | Leesburg, TX 75451 | Oil & Gas Operator | Jul 2025 |
| 7 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 8 | Carr Resources, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Jul 2025 |
| 9 | Castlerock Oil Company, Inc. | Addison, TX 75001 | Oil & Gas Operator | Feb 2006 |
| 10 | Cole, Frank W Engineering | Dallas, TX 75254 | Oil & Gas Operator | Mar 2006 |
| 11 | Comanche Well Service Corp. | Plano, TX 75093 | Oil & Gas Operator | Jul 2025 |
| 12 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2025 |
| 13 | Eastex Crude Company, LLC | Leesburg, TX 75451 | Oil & Gas Operator | Jul 2025 |
| 14 | Embassy Well Service, LLC | Carrollton, TX 75011 | Oil & Gas Operator | Jul 2025 |
| 15 | Energypro, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Jul 2025 |
| 16 | Executive Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Jul 2025 |
| 17 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 18 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 19 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 20 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 21 | Fjo Energy, LLC | Fairhope, AL 36532 | Oil Operator | Jul 2025 |
| 22 | Graward Operating, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Jul 2025 |
| 23 | Greenwich Oil Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 1994 |
| 24 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 25 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 26 | Hinton, W. B. | MT Pleasant, TX 75455 | Oil & Gas Operator | Jul 1993 |
| 27 | Hugus Investment Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 28 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Jul 2025 |
| 29 | J.P. Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 30 | Lawson Petroleum Co. | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2009 |
| 31 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 32 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Aug 2024 |
| 33 | Lindenmuth & Associates, Etex | Austin, TX 78703 | Oil & Gas Operator | Jun 2002 |
| 34 | Linder, John Operating Co., LLC | Gladewater, TX 75647 | Oil & Gas Operator | Jul 2025 |
| 35 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | May 2025 |
| 36 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 37 | Meridian Oil Production Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 2024 |
| 38 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 39 | Muroz International Group Inc | Houston, TX 77056 | Oil Operator | Jul 2025 |
| 40 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Jul 2025 |
| 41 | Neff, Harold & Associates, Inc. | Tyler, TX 75702 | Oil & Gas Operator | May 2008 |
| 42 | Oto, Co. | Woodward, OK 73802 | Oil & Gas Operator | Jun 1998 |
| 43 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 44 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 45 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 46 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |
| 47 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Jul 2025 |
| 48 | Red Water Resources, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Jul 2025 |
| 49 | Rubis Oil, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2025 |
| 50 | Santerra Oil & Gas, Inc. | Seagoville, TX 75159 | Oil & Gas Operator | Jul 2025 |
| 51 | Scheriger Production | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 52 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 53 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 54 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2025 |
| 55 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 56 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Jul 2025 |
| 57 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Jul 2025 |
| 58 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 59 | Valence Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2025 |
| 60 | Via, James R. | Talco, TX 75487 | Oil & Gas Operator | Jul 2025 |
| 61 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 62 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |
| 63 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |