| 201 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 202 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Dec 2025 |
| 203 | F&H Operating Company LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 204 | Fargo Exploration Co. | Abilene, TX 79601 | Oil & Gas Operator | Dec 1995 |
| 205 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 206 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2025 |
| 207 | Fields, Bert, Jr. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2015 |
| 208 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 209 | Finlay Energy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 1999 |
| 210 | Fiscus Drilling Co., Inc. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2015 |
| 211 | Fisher, Jack Inc. | Abilene, TX 79603 | Oil & Gas Operator | Sep 2001 |
| 212 | Flint Oak Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Dec 2025 |
| 213 | Foree Oil Company | Terrell, TX 75160 | Oil & Gas Operator | Dec 2025 |
| 214 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 215 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 216 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 217 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2025 |
| 218 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 219 | Franklin, Jack | Arlington, TX 76013 | Oil & Gas Operator | Nov 2007 |
| 220 | Fremont Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2014 |
| 221 | Frontier Gas Operating Corp. | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |
| 222 | Furry Oil & Gas, Inc. | Bangs, TX 76823 | Oil & Gas Operator | Dec 2025 |
| 223 | Furry Operating Account | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 224 | Furry Producing Company | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 225 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 226 | G & G Oil, LLC | Frankston, TX 75763 | Oil & Gas Operator | Dec 2025 |
| 227 | Gaedeke Oil & Gas Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Sep 2023 |
| 228 | Gco Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 229 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 230 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Dec 2025 |
| 231 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 232 | Geostrat Inc. | Addison, TX 75001 | Oil & Gas Operator | Nov 2011 |
| 233 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 234 | Geotrac Energy Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2000 |
| 235 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 236 | Glahn Resources, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Dec 2025 |
| 237 | Golden Oil And Ranch, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 238 | Golden Resources Corporation | Dallas, TX 75238 | Oil & Gas Operator | Dec 1998 |
| 239 | Golden, Marty Joe | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 240 | Grand Banks Energy Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 241 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 242 | Gray Operating Company, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2018 |
| 243 | Greasewood Oil Company | Midland, TX 79705 | Oil & Gas Operator | Jul 2007 |
| 244 | Great Texas Crude Inc. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Dec 2025 |
| 245 | Green Oil & Gas, Inc. | Winters, TX 79567 | Oil & Gas Operator | Aug 2003 |
| 246 | Green, Roy W. Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2021 |
| 247 | Griffin Resources | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2003 |
| 248 | Griggs, VIctor C. | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 249 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 250 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |
| 251 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 252 | H&G Petroleum Corporation | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 253 | H.A.N. Operating Incorporated | Clyde, TX 79510 | Oil & Gas Operator | Aug 2016 |
| 254 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 255 | Hale Oil & Gas Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 1997 |
| 256 | Halliburton Operating Company | Plano, TX 75093 | Oil & Gas Operator | Dec 2025 |
| 257 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 258 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Dec 2025 |
| 259 | Hane Operating, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2005 |
| 260 | Hannathon Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 261 | Hanson Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 262 | Hardrock Resources Inc. | Winters, TX 79567 | Oil & Gas Operator | Dec 2025 |
| 263 | Hartel, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Aug 1997 |
| 264 | Hartoil Corporation | Post, TX 79356 | Oil & Gas Operator | Dec 2025 |
| 265 | Hay Creek Investments, L.L.C. | Santa Anna, TX 76878 | Oil Operator | Jul 2018 |
| 266 | Hayes Oil & Gas Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2003 |
| 267 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 268 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 269 | Heritage Petroleum Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Dec 2025 |
| 270 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 271 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Dec 2025 |
| 272 | HGN Operating Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2014 |
| 273 | HGN Operating I, LLC | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 274 | Hidalgo Oil & Exploration Corp. | New Braunfels, TX 78131 | Oil & Gas Operator | Dec 2025 |
| 275 | Hillcrest Petroleum, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2019 |
| 276 | Hilliard Oil | Bronte, TX 76933 | Oil & Gas Operator | Mar 2008 |
| 277 | Hoelscher, Weldon | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 278 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 279 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2025 |
| 280 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | Dec 2025 |
| 281 | Horizon Oil & Gas Co. | Dallas, TX 75221 | Oil & Gas Operator | Jan 2005 |
| 282 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 283 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 284 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 285 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 286 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 287 | Huntland Properties, LTD. | Santa Anna, TX 76878 | Oil & Gas Operator | Dec 2025 |
| 288 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | Dec 2025 |
| 289 | Ice Brothers, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2024 |
| 290 | Imperial Gas Resources LLC | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 291 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 292 | Inspire Oil And Gas Inc. | Katy, TX 77449 | Oil Operator | Dec 2025 |
| 293 | Ira Oil & Gas LLC | Addison, TX 75001 | Oil & Gas Operator | Jul 2008 |
| 294 | Iron Bell Operating, LLC | Lubbock, TX 79423 | Oil & Gas Operator | Dec 2025 |
| 295 | J & J Services Company | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2025 |
| 296 | J & S Operating | Shiner, TX 77984 | Oil & Gas Operator | Dec 2002 |
| 297 | J N R, Inc. | Austin, TX 78732 | Oil & Gas Operator | Aug 2009 |
| 298 | J.H. Oil, Inc. (A) | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2004 |
| 299 | JB Production Company | Denton, TX 76202 | Oil & Gas Operator | Jul 2004 |
| 300 | Jerry Hess Operating Company | Muenster, TX 76252 | Oil Operator | Dec 2008 |