| 101 | Dry Fork Production Co., LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 102 | E & E Drilling Co., Inc. | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 103 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 104 | Eagle Petroleum Corporation | Holliday, TX 76366 | Oil & Gas Operator | Oct 2005 |
| 105 | Edge, Fred Well Service Co. | Archer City, TX 76351 | Oil & Gas Operator | May 2024 |
| 106 | Efficiency Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 107 | Energy Management Company | Kilgore, TX 75663 | Oil Operator | Apr 2020 |
| 108 | Energy Production Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 109 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 110 | Enr Operating, LLC | Eunice, NM 88231 | Oil & Gas Operator | Oct 2025 |
| 111 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 112 | EP Operating Limited Partnership | Dallas, TX 75201 | Oil & Gas Operator | Feb 1995 |
| 113 | Estacado Energy, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 2025 |
| 114 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |
| 115 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Oct 2025 |
| 116 | Falls Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 117 | Falls Production Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 118 | Farrell Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 119 | Farrex, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Oct 2008 |
| 120 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 121 | Ferguson, S. M. Jr., Inc. | Dallas, TX 75218 | Oil & Gas Operator | Oct 2025 |
| 122 | Fin Energy, LLC | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 123 | Finnell Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2009 |
| 124 | Finnell Oil Services, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 125 | Five States Operating Company LLC | Dallas, TX 75206 | Oil & Gas Operator | Aug 2025 |
| 126 | Flusche Properties, L.L.C. | Electra, TX 76360 | Oil & Gas Operator | Jan 2017 |
| 127 | Flusche Supply, Inc. | Electra, TX 76360 | Oil & Gas Operator | Aug 1994 |
| 128 | Flusche, Herb | Wichita Falls, TX 76309 | Oil & Gas Operator | Mar 2005 |
| 129 | Ford, Don H. & Assoc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 130 | Forster, Fred Jr. | Midland, TX 79705 | Oil & Gas Operator | Aug 2008 |
| 131 | Fredna Oil Co. | Aledo, TX 76008 | Oil & Gas Operator | Sep 2020 |
| 132 | Fulcrum Exploration, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Jun 2025 |
| 133 | Fultz Oil Company | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1995 |
| 134 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 135 | Gantt, Joe, Properties | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 136 | GBF Operating LLC | Morrison, CO 80465 | Oil & Gas Operator | Oct 2025 |
| 137 | GBG Operating Corp. | Wichita Falls, TX 76302 | Oil & Gas Operator | Sep 1998 |
| 138 | Gen-Sher L.L.P. | Bluegrove, TX 76352 | Oil & Gas Operator | Oct 2025 |
| 139 | Geurin Oil & Gas | Saint Jo, TX 76265 | Oil & Gas Operator | Oct 2022 |
| 140 | GGP Exploration, LTD. | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 141 | Glen D. Gonzenbach, LLC | Henrietta, TX 76365 | Oil & Gas Operator | Dec 2016 |
| 142 | Gonzenbach, Glen D | Henrietta, TX 76365 | Oil & Gas Operator | Aug 2007 |
| 143 | GPH Oil Company | Vernon, TX 76384 | Oil & Gas Operator | Sep 2008 |
| 144 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 145 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 146 | H F Production Co., LTD. | Wichita Falls, TX 76309 | Oil Operator | Feb 2020 |
| 147 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 148 | Hale Oil & Gas Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 1997 |
| 149 | Harding Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2016 |
| 150 | Haynes & Shirley Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 2025 |
| 151 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 152 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 153 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 154 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Jul 2025 |
| 155 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 156 | Holliday CSG Corp. | Holliday, TX 76366 | Oil & Gas Operator | Oct 2025 |
| 157 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Oct 2025 |
| 158 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 159 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Oct 2025 |
| 160 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Oct 2025 |
| 161 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Oct 2025 |
| 162 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 163 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | Oct 2025 |
| 164 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2025 |
| 165 | Ipr Energy Partners, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Aug 2014 |
| 166 | J. & M. Well Service, Inc. | Electra, TX 76360 | Oil & Gas Operator | Oct 2025 |
| 167 | J.H.R. Corporation | Bridgeville, PA 15017 | Oil & Gas Operator | Jul 2001 |
| 168 | Jackson Bros. | Vernon, TX 76384 | Oil & Gas Operator | Jul 2016 |
| 169 | Jackson, Jeral W. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2004 |
| 170 | James, Deryl | Nocona, TX 76255 | Oil & Gas Operator | Oct 2025 |
| 171 | Jamex, Inc. | Lewisville, TX 75067 | Oil & Gas Operator | Oct 2025 |
| 172 | Jilpetco, Inc. | Fort Worth, TX 76121 | Oil & Gas Operator | Oct 2025 |
| 173 | Jimco Oil Company, Inc. | Electra, TX 76360 | Oil & Gas Operator | Jun 2019 |
| 174 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Oct 2025 |
| 175 | Jla Resources Company | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 176 | Johnson & Ernst Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2018 |
| 177 | Johnson, William D. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2008 |
| 178 | Jones Company, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 1999 |
| 179 | K-D Operations | N Richlnd HLS, TX 76182 | Oil Operator | Oct 2025 |
| 180 | Kampresco Energy, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 181 | Kelsey Operating, Inc. | Houston, TX 77077 | Oil Operator | Feb 2022 |
| 182 | Key Energy Of Colorado, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2016 |
| 183 | Kingdom Resources Corporation | Austin, TX 78701 | Oil & Gas Operator | Sep 1993 |
| 184 | Kodiak Operating, L.L.C. | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 185 | Kodiak Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 1996 |
| 186 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 187 | Kuran Resources | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 188 | Kuykendall, IValene Estate | Electra, TX 76360 | Oil & Gas Operator | Dec 1998 |
| 189 | Kuykendall, M. C. | Electra, TX 76360 | Oil & Gas Operator | Apr 1995 |
| 190 | Kuykendall, M.C., Estate | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 191 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 192 | L & S Drilling, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Mar 2016 |
| 193 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 194 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Feb 2024 |
| 195 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Oct 2025 |
| 196 | Landrum Petroleum Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Mar 2008 |
| 197 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 198 | Layline Energy I LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2019 |
| 199 | LC Operating, LLC | Burkburnett, TX 76354 | Oil & Gas Operator | Oct 2025 |
| 200 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |