| 10201 | Finnell Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2009 |
| 10202 | Finnell Oil Services, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 10203 | Finney Drilling Co. | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 10204 | Finney Kyler A Dba Finney Oil Co | Wann, OK 74083 | Oil Operator | Apr 2025 |
| 10205 | Finney Oil Company | | Oil & Gas Operator | Mar 2025 |
| 10206 | Finston Arthur | Tulsa, OK 74105-7183 | Oil & Gas Operator | Mar 2007 |
| 10207 | Firebird Energy II LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2025 |
| 10208 | Firebird Energy LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2022 |
| 10209 | Firehouse Energy LLC | Morris, OK 74445 | Oil & Gas Operator | Mar 2024 |
| 10210 | Firerock Company | Abilene, TX 79602 | Oil & Gas Operator | Jul 2025 |
| 10211 | Fireside Oil And Gas, Inc. | West Monroe, LA 71294 | Oil & Gas Operator | Feb 2002 |
| 10212 | Firestone Tire & Rubber | Akron, OH 44317 | Oil & Gas Operator | Dec 1989 |
| 10213 | Firewater, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2011 |
| 10214 | Firewheel Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2017 |
| 10215 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 10216 | First Alliance CH | Erie, PA 16506-5024 | Gas Operator | Dec 2017 |
| 10217 | First Amer Energy Inc | Bradford, PA 16701-0184 | Oil & Gas Operator | Dec 2024 |
| 10218 | First American Operating Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2006 |
| 10219 | First Aransas Reserves, Inc. | Alvin, TX 77511 | Oil & Gas Operator | Mar 2018 |
| 10220 | First Ascent Operating LLC | Addison, TX 75001 | Oil Operator | Apr 2025 |
| 10221 | First Chinese Baptist Church | | Oil Operator | Dec 2006 |
| 10222 | First Energy Cor | | Oil Operator | Aug 1990 |
| 10223 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 10224 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 10225 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
| 10226 | First Liberty Energy Inc | Boca Raton, FL 33432-5942 | Oil & Gas Operator | Jul 2013 |
| 10227 | First National Finance Corporation | | Oil Operator | Dec 1995 |
| 10228 | First National O | | Oil & Gas Operator | Aug 1990 |
| 10229 | First National Oil, Inc. | Edmond, OK 73003 | Oil & Gas Operator | Apr 2025 |
| 10230 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | May 2025 |
| 10231 | First Oil And Gas Company | | Oil Operator | Apr 2025 |
| 10232 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 10233 | First Reserve Oil & Gas Co | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 10234 | First Rock, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jul 2025 |
| 10235 | First Solid Energy Group, LP | Missouri City, TX 77489 | Oil & Gas Operator | Jul 2025 |
| 10236 | First Source Gas, LP | Houston, TX 77010 | Gas Operator | Jan 2006 |
| 10237 | First Source Texas, Inc. | MT Pleasant, MI 48858 | Gas Operator | Nov 2004 |
| 10238 | First Sourcenergy Wyoming Inc | Gillette, WY 82718 | Gas Operator | Jul 2003 |
| 10239 | First South Energy Corp | Hartland, WI 53029 | Oil & Gas Operator | Dec 2014 |
| 10240 | First Texas Exploration Corp. | Arcadia, LA 71001 | Oil & Gas Operator | Aug 2003 |
| 10241 | First Zone Production | Salt Lake City, UT 84102 | Oil & Gas Operator | Dec 1997 |
| 10242 | Firstrike Energy Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Jan 2025 |
| 10243 | Fischer Operating Corporation | Victoria, TX 77902 | Oil & Gas Operator | Jan 1999 |
| 10244 | Fiscus Drilling Co., Inc. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2015 |
| 10245 | Fishburn Producing Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 2024 |
| 10246 | Fishburn Services Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 1990 |
| 10247 | Fishcreek Minerals, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 10248 | Fisher Ellis R | Bristow, OK 74010-8515 | Oil & Gas Operator | Dec 2015 |
| 10249 | Fisher Ernest B | Bristow, OK 74010 | Oil Operator | Jul 2024 |
| 10250 | Fisher Joint Venture | | Oil & Gas Operator | Oct 1998 |
| 10251 | Fisher McCall Oil And Gas Inc | | Oil Operator | Dec 2014 |
| 10252 | Fisher Oil Co. | Big Lake, TX 76932 | Oil & Gas Operator | Jul 2025 |
| 10253 | Fisher, Jack Inc. | Abilene, TX 79603 | Oil & Gas Operator | Sep 2001 |
| 10254 | Fisher, L. C. Jr. | Longview, TX 75608 | Oil & Gas Operator | May 1993 |
| 10255 | Fisk Family Farms LLC | | Gas Operator | May 2025 |
| 10256 | Fitch Petroleum Company Inc | Adair, OK 74330 | Oil Operator | Nov 2024 |
| 10257 | Fite Oil & Gas, Inc. | Shreveport, LA 71163 | Oil & Gas Operator | Jul 2025 |
| 10258 | Fitkin Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1994 |
| 10259 | Fitts, B.K. Oil & Gas | Bowie, TX 76230 | Oil & Gas Operator | Jul 2025 |
| 10260 | Fitzgerald Oil Company | Waurika, OK 73573 | Oil Operator | Apr 2025 |
| 10261 | Fitzgerald Production Co. | Oil City, LA 71061 | Oil & Gas Operator | Dec 2024 |
| 10262 | Fitzpatrick, Stephen | Angola, NY 14006 | Gas Operator | Dec 2024 |
| 10263 | Fitzsimmons Randall W & Deborah S | Bartesville, OK 74006 | Oil & Gas Operator | Feb 2025 |
| 10264 | Five D Co | Cactus, TX 79013 | Oil & Gas Operator | Sep 1996 |
| 10265 | Five K Partnership | Graham, TX 76450 | Oil & Gas Operator | Oct 2023 |
| 10266 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | May 2025 |
| 10267 | Five State Energy Co | Dallas, TX 75206 | Oil & Gas Operator | Oct 1995 |
| 10268 | Five States Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 10269 | Five States Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Feb 2008 |
| 10270 | Five States Operating Company LLC | Dallas, TX 75206 | Oil & Gas Operator | May 2025 |
| 10271 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Jul 2025 |
| 10272 | Fiveash Operating Company, Inc. | Christoval, TX 76935 | Oil & Gas Operator | Aug 2003 |
| 10273 | Fivestones Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 10274 | FJH Oil Company | Muenster, TX 76252 | Oil & Gas Operator | Jul 2025 |
| 10275 | Fjo Energy, LLC | Fairhope, AL 36532 | Oil Operator | Jul 2025 |
| 10276 | Flag DRLG Co, Inc | Greenville, KY 42345 | Oil & Gas Operator | Dec 2021 |
| 10277 | Flag Energy, LLC | Centerton, AR 72719 | Oil & Gas Operator | Nov 2018 |
| 10278 | Flag Transport Inc | Shattuck, OK 73858-0848 | Oil Operator | Dec 2014 |
| 10279 | Flag-Redfern Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2002 |
| 10280 | Flagin Operating LLC | Norman, OK 73072-2405 | Oil & Gas Operator | Apr 2025 |
| 10281 | Flahive Oil & Gas LLC | Golden, CO 80401 | Oil Operator | Oct 1995 |
| 10282 | Flairtex Resources, Inc. | Houston, TX 77040 | Oil & Gas Operator | Oct 1998 |
| 10283 | Flame Energy Co Inc | Dalton, OH 44618 | Oil & Gas Operator | Dec 2006 |
| 10284 | Flamingo Oil & Gas | Luling, TX 78648 | Oil & Gas Operator | Jul 2025 |
| 10285 | Flamingo Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Jul 2025 |
| 10286 | Flanagan Energy Company LLC | Walters, OK 73572 | Oil Operator | Feb 2025 |
| 10287 | Flanigan Bros | Edinboro, PA 16412-1443 | Oil & Gas Operator | Dec 2024 |
| 10288 | Flare Oil Inc | Rockport, TX 78382 | Oil & Gas Operator | Jul 2025 |
| 10289 | Flare Resources Inc. | Houston, TX 77002 | Gas Operator | Jun 2006 |
| 10290 | Flare, Inc. | | Oil & Gas Operator | Jul 1995 |
| 10291 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 10292 | Flash Gas & Oil Southwest, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Oct 2019 |
| 10293 | Flash Gas & Oil, Inc. | | Oil & Gas Operator | May 1991 |
| 10294 | Flat Creek Operating Co. | Rockwall, TX 75087 | Oil & Gas Operator | Jun 2004 |
| 10295 | Flat Creek Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 10296 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Jul 2025 |
| 10297 | Flatiron Exploration LLC | Olean, NY 14760 | Oil & Gas Operator | Dec 2024 |
| 10298 | Flatirons Development LLC | Westminster, CO 80020-2771 | Gas Operator | Dec 2015 |
| 10299 | Flatirons Resources LLC | Westminster, CO 80021 | Oil & Gas Operator | Dec 2022 |
| 10300 | Flatland Energy, LLC | Gardner, KS 66030 | Oil Operator | Mar 2025 |