| 101 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 102 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 103 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Aug 2025 |
| 104 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Dec 2025 |
| 105 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 106 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 107 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Dec 2025 |
| 108 | Fairway Resources Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Aug 2022 |
| 109 | Farrington, Walter L., Jr. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2002 |
| 110 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 111 | Forrester Oil & Gas Co. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 112 | Forrester, J. L. | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 113 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 114 | Four Diamond Operating, LLC | Kilgore, TX 75662 | Oil Operator | Dec 2025 |
| 115 | Frio Engineering Inc. | Houston, TX 77066 | Oil & Gas Operator | Dec 2025 |
| 116 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 117 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 118 | Gaither Petroleum Corporation | Katy, TX 77493 | Oil & Gas Operator | Dec 2025 |
| 119 | Gap Exploration, LTD. | Naples, FL 34110 | Oil & Gas Operator | Jul 2008 |
| 120 | Gardner Energy Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 1999 |
| 121 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Dec 2025 |
| 122 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 123 | Glori Energy Holdings Inc. | Houston, TX 77053 | Oil & Gas Operator | Jan 2017 |
| 124 | Glori Energy Production LLC | Houston, TX 77027 | Oil & Gas Operator | Apr 2018 |
| 125 | Goforth Production Company | Rockdale, TX 76567 | Oil Operator | Feb 2014 |
| 126 | Goldsmith Operating, LLC | Tyler, TX 75711 | Oil & Gas Operator | Dec 2025 |
| 127 | Goldsmith, J. Paul | Tyler, TX 75711 | Oil & Gas Operator | Feb 1997 |
| 128 | Goldsmith, Neta R. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2009 |
| 129 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Dec 2025 |
| 130 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 131 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Dec 2025 |
| 132 | Greenwich Oil Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 1994 |
| 133 | Greer Exploration Corporation | Shreveport, LA 71118 | Oil & Gas Operator | Jul 2017 |
| 134 | Griffin Operating, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Mar 2017 |
| 135 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Dec 2025 |
| 136 | Gulf Central Petroleum Corp. | Dallas, TX 75252 | Oil & Gas Operator | Dec 2025 |
| 137 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 138 | Gulf South Operators, Inc. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2015 |
| 139 | Gulf Tide Oil Company, The | Houston, TX 77008 | Oil & Gas Operator | Jun 1999 |
| 140 | Gulftex Operating Inc | Plano, TX 75093 | Oil & Gas Operator | Dec 2025 |
| 141 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 142 | Hankamer, Curtis Corporation,The | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 143 | Harleton Oil & Gas Inc. | Tyler, TX 75710 | Oil & Gas Operator | Dec 2025 |
| 144 | Harman Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2007 |
| 145 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Aug 2025 |
| 146 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 147 | Hillin-Simon Oil Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2013 |
| 148 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 149 | Humak Processors, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2005 |
| 150 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 151 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 152 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 153 | Hunt, WM. Herbert, Trust Est. | Dallas, TX 75201 | Oil & Gas Operator | Sep 1998 |
| 154 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | Dec 2025 |
| 155 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 156 | Ironhorse Operations, LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 157 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Dec 2025 |
| 158 | Jacobi-Johnson Energy, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Dec 1998 |
| 159 | Jandar Exploration, L. C. | Tyler, TX 75703 | Oil & Gas Operator | Dec 2025 |
| 160 | Jena Operating Company, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2007 |
| 161 | Jess Energy Company | Tyler, TX 75710 | Oil & Gas Operator | Sep 1997 |
| 162 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Dec 2025 |
| 163 | JKJ Oil Company | Austin, TX 78746 | Oil & Gas Operator | Jun 2007 |
| 164 | Jordan Properties | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 165 | Jurassic Exploration, Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 2025 |
| 166 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Aug 2025 |
| 167 | Kalos Corporation | Tyler, TX 75701 | Oil & Gas Operator | Dec 2025 |
| 168 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 169 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 170 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Aug 2025 |
| 171 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2025 |
| 172 | Keyway Oil & Gas Operating LLC | Kilgore, TX 75663 | Oil Operator | Oct 2020 |
| 173 | Killingsworth, Lee Operator | Longview, TX 75601 | Oil & Gas Operator | Jan 1999 |
| 174 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 175 | Krog Partners, LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 176 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 177 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 178 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 179 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 180 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 181 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2023 |
| 182 | Lenert & Pettitt, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 1994 |
| 183 | Lindenmuth & Associates, Etex | Austin, TX 78703 | Oil & Gas Operator | Jun 2002 |
| 184 | Linder, John G. Jr. | Gladewater, TX 75647 | Oil & Gas Operator | Apr 2005 |
| 185 | Linder, John Operating Co., LLC | Gladewater, TX 75647 | Oil & Gas Operator | Dec 2025 |
| 186 | Little & Whyte Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2008 |
| 187 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 188 | Lockout Corporation | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 189 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 190 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 191 | Long-Tex Exploration, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2025 |
| 192 | M-C Production & Drilling Co,Inc | Longview, TX 75608 | Oil & Gas Operator | Dec 2025 |
| 193 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 194 | Manziel Management Corporation | Tyler, TX 75711 | Oil Operator | Feb 2014 |
| 195 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Oct 2025 |
| 196 | Maximus Operating, LTD. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 197 | Mayfield Energy, LLC | Austin, TX 78732 | Oil & Gas Operator | Dec 2025 |
| 198 | McBee Company, The | Dallas, TX 75219 | Oil & Gas Operator | Dec 1997 |
| 199 | McBride, Jerrel L Enterprise Inc | Kilgore, TX 75663 | Oil & Gas Operator | Jun 1999 |
| 200 | McMurrey, R. J., Production Comp | Tyler, TX 75711 | Oil & Gas Operator | Dec 2025 |