| 201 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2026 |
| 202 | Fiesta Energy LLC | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Feb 2026 |
| 203 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 204 | Firerock Company | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 205 | Fisher, Jack Inc. | Abilene, TX 79603 | Oil & Gas Operator | Sep 2001 |
| 206 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 207 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 208 | Fox Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 209 | Franklin, Jack | Arlington, TX 76013 | Oil & Gas Operator | Nov 2007 |
| 210 | Frontier Operating Corporation | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 211 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 212 | Gallo Petroleum, LLC | Colorado City, TX 79512 | Oil Operator | Feb 2026 |
| 213 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 214 | Geostrat Inc. | Addison, TX 75001 | Oil & Gas Operator | Nov 2011 |
| 215 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 216 | Global Drilling, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 217 | GM Petroleum Corporation (I) | Dallas, TX 75218 | Oil & Gas Operator | Aug 2003 |
| 218 | Golden Horse Group Corp. | Houston, TX 77082 | Oil Operator | Feb 2026 |
| 219 | Goopco, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 220 | Graham, Tom Drilling Co. | Tuscola, TX 79562 | Oil & Gas Operator | Feb 2004 |
| 221 | Gramrich Oil & Gas Corporation | Coppell, TX 75019 | Oil & Gas Operator | Oct 2012 |
| 222 | Gray Oil & Gas Inc. | Abilene, TX 79606 | Oil & Gas Operator | Oct 2013 |
| 223 | Grayrock Energy II, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Feb 2026 |
| 224 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Feb 2026 |
| 225 | Greasewood Oil Company | Midland, TX 79705 | Oil & Gas Operator | Jul 2007 |
| 226 | Gro-Tex Exploration | Abilene, TX 79603 | Oil Operator | Feb 2026 |
| 227 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |
| 228 | Guffey, WM. R. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2015 |
| 229 | Guidance Oil Developers, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Mar 2008 |
| 230 | Gunn Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 231 | Gwet, Inc. | Merkel, TX 79536 | Oil Operator | Feb 2026 |
| 232 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 233 | H & T Disposal | Abilene, TX 79608 | Oil Operator | Apr 2003 |
| 234 | H-S Exploration | Gunnison, CO 81230 | Oil & Gas Operator | Feb 2026 |
| 235 | Hailey Energy Corporation | Wesson, MS 39191 | Gas Operator | May 2013 |
| 236 | Halliburton Operating Company | Plano, TX 75093 | Oil & Gas Operator | Feb 2026 |
| 237 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 238 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Feb 2026 |
| 239 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 240 | Hanson Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 241 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 242 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 243 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 244 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 245 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 246 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 247 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 248 | Hewitt, Alan P. | Midland, TX 79702 | Oil & Gas Operator | Aug 1997 |
| 249 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Feb 2026 |
| 250 | HGN Operating Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2014 |
| 251 | HGN Operating I, LLC | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 252 | Hickory Petroleum Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2013 |
| 253 | Hillcrest Petroleum, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2019 |
| 254 | Hodges & Hodges Productions | Anson, TX 79501 | Oil & Gas Operator | Aug 2003 |
| 255 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 256 | Holcomb Enterprises | Clyde, TX 79510 | Oil & Gas Operator | Aug 2003 |
| 257 | Holden Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 258 | Holley Operating, L. L. C. | Abilene, TX 79601 | Oil Operator | Jul 2025 |
| 259 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 260 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 261 | Horn Energy | Eastland, TX 76448 | Oil & Gas Operator | Feb 2026 |
| 262 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 263 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 264 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 265 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 266 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 267 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 268 | Ice Well Services, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2026 |
| 269 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Feb 2026 |
| 270 | Iron Horse Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 271 | J & J Trading | Abilene, TX 79608 | Oil & Gas Operator | Dec 2004 |
| 272 | J J Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 273 | J N R, Inc. | Austin, TX 78732 | Oil & Gas Operator | Aug 2009 |
| 274 | J-E Production, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2008 |
| 275 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Feb 2026 |
| 276 | J.E.R. Production Inc. | Flower Mound, TX 75028 | Gas Operator | Apr 2005 |
| 277 | J.H. Oil, Inc. (A) | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2004 |
| 278 | Jackson Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 2001 |
| 279 | Jacobs, C. E., Co. | Albany, TX 76430 | Oil & Gas Operator | Sep 2022 |
| 280 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Feb 2026 |
| 281 | JMC Resources Corp. | Houston, TX 77077 | Oil & Gas Operator | Feb 2026 |
| 282 | Jolen Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 283 | Jones Company, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 1999 |
| 284 | Jones, Jansen M. | Albany, TX 76430 | Oil & Gas Operator | Jul 2009 |
| 285 | Jordan Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 286 | Journey Oil, LLC | Cary, NC 27513 | Oil Operator | Feb 2026 |
| 287 | JQL Energy, LLC | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 288 | Jrow Energy LLC | Lubbock, TX 79423 | Oil Operator | Feb 2026 |
| 289 | K & W Vanpelt Company | Portage, OH 43451 | Oil & Gas Operator | Feb 2026 |
| 290 | Karico GP, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 291 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 292 | Kern Co. | Houston, TX 77095 | Oil & Gas Operator | Jan 2021 |
| 293 | Kilpatrick Production Company | Tye, TX 79563 | Oil & Gas Operator | Feb 2026 |
| 294 | Kimbell Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 295 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Feb 2026 |
| 296 | Kinney Incorporated | Andrews, TX 79714 | Oil & Gas Operator | Feb 2026 |
| 297 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 298 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Feb 2026 |
| 299 | Koko Skadi, LLC | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 300 | Kollao Properties LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |