| 10201 | Fieldstone Exploration Company | | Oil & Gas Operator | Jan 2007 |
| 10202 | Fieldwood Energy LLC | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
| 10203 | Fieldwood Energy Offshore LLC | Houston, TX 77042 | Oil & Gas Operator | Jun 2025 |
| 10204 | Fieldwood Onshore LLC | Houston, TX 77098 | Oil & Gas Operator | Jun 2025 |
| 10205 | Fiesta Energy LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 10206 | Fife Oil & Gas | | Oil Operator | Oct 1987 |
| 10207 | Fife Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 10208 | Fife Oil Company, Inc. | | Oil & Gas Operator | Feb 2008 |
| 10209 | Fifth Creek Energy Operating Company LLC | | Oil & Gas Operator | Mar 2018 |
| 10210 | Fifty Third Corp. & K.M.O.C. | | Gas Operator | Jul 1994 |
| 10211 | Fifty-Third Corporation | | Gas Operator | Jul 1994 |
| 10212 | Figgie Natural Resources | Wickliffe, OH 44092 | Oil & Gas Operator | Oct 1995 |
| 10213 | Figure 3 Operating LLC | Tyler, TX 75703 | Oil Operator | Dec 2024 |
| 10214 | Filco Incorporated | | Oil & Gas Operator | Apr 2025 |
| 10215 | Fiml Natural Resources LLC (FNR) | Denver, CO 80202-4438 | Oil & Gas Operator | Jul 2014 |
| 10216 | Fiml Natural Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2014 |
| 10217 | Fin Energy, LLC | Wichita Falls, TX 76308 | Oil Operator | Jun 2025 |
| 10218 | Fin-Oil, Inc. | | Oil & Gas Operator | Apr 1985 |
| 10219 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 10220 | Fina Oil & Chemical | Midland, TX 797022455 | Oil & Gas Operator | Apr 1999 |
| 10221 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 10222 | Fina Oil& Chem Co/Marathon Oil | | Oil & Gas Operator | Dec 1992 |
| 10223 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Jun 2025 |
| 10224 | Finch-Crestmont | Houston, TX 77027 | Oil & Gas Operator | Oct 2012 |
| 10225 | Finck Oil & Gas Co | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 10226 | Finders Co And Sullivan And Co | | Oil & Gas Operator | May 1987 |
| 10227 | Finders Co The | | Oil & Gas Operator | Jan 1998 |
| 10228 | Fine Jack | Pensacola, FL 32516 | Oil Operator | May 1995 |
| 10229 | Finger Oil & Gas, Inc. | Castroville, TX 78009 | Oil & Gas Operator | May 2021 |
| 10230 | Finkelstein, Jack, Trustee | Houston, TX 77027 | Oil & Gas Operator | Apr 2007 |
| 10231 | Finlay Energy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 1999 |
| 10232 | Finley Oil Compa | | Oil Operator | Oct 1992 |
| 10233 | Finley Oil Company, LLC | Liberty, TX 77575 | Oil Operator | Jun 2025 |
| 10234 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Jun 2025 |
| 10235 | Finley, Billy D | Burkesville, KY 42717 | Oil Operator | Dec 2020 |
| 10236 | Finnell Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2009 |
| 10237 | Finnell Oil Services, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2025 |
| 10238 | Finney Drilling Co. | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 10239 | Finney Kyler A Dba Finney Oil Co | Wann, OK 74083 | Oil Operator | Mar 2025 |
| 10240 | Finney Oil Company | | Oil & Gas Operator | Feb 2025 |
| 10241 | Finston Arthur | Tulsa, OK 74105-7183 | Oil & Gas Operator | Mar 2007 |
| 10242 | Firebird Energy II LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2025 |
| 10243 | Firebird Energy LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2022 |
| 10244 | Firehouse Energy LLC | Morris, OK 74445 | Oil & Gas Operator | Mar 2024 |
| 10245 | Firerock Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2025 |
| 10246 | Fireside Oil And Gas, Inc. | West Monroe, LA 71294 | Oil & Gas Operator | Feb 2002 |
| 10247 | Firestone Tire & Rubber | Akron, OH 44317 | Oil & Gas Operator | Dec 1989 |
| 10248 | Firewater, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2011 |
| 10249 | Firewheel Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2017 |
| 10250 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 10251 | First Alliance CH | Erie, PA 16506-5024 | Gas Operator | Dec 2017 |
| 10252 | First Amer Energy Inc | Bradford, PA 16701-0184 | Oil & Gas Operator | Dec 2024 |
| 10253 | First American Operating Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2006 |
| 10254 | First Aransas Reserves, Inc. | Alvin, TX 77511 | Oil & Gas Operator | Mar 2018 |
| 10255 | First Ascent Operating LLC | Addison, TX 75001 | Oil Operator | Mar 2025 |
| 10256 | First Chinese Baptist Church | | Oil Operator | Dec 2006 |
| 10257 | First Energy Cor | | Oil Operator | Aug 1990 |
| 10258 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 10259 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 10260 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
| 10261 | First Hardin Corp. | Fulshear, TX 77441 | Oil & Gas Operator | Nov 1994 |
| 10262 | First Liberty Energy Inc | Boca Raton, FL 33432-5942 | Oil & Gas Operator | Jul 2013 |
| 10263 | First National Finance Corporation | | Oil Operator | Dec 1995 |
| 10264 | First National O | | Oil & Gas Operator | Aug 1990 |
| 10265 | First National Oil, Inc. | Edmond, OK 73003 | Oil & Gas Operator | Mar 2025 |
| 10266 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | Mar 2025 |
| 10267 | First Oil And Gas Company | | Oil Operator | Apr 2025 |
| 10268 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 10269 | First Reserve Oil & Gas Co | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 10270 | First Rock, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jun 2025 |
| 10271 | First Solid Energy Group, LP | Missouri City, TX 77489 | Oil & Gas Operator | Jun 2025 |
| 10272 | First Source Gas, LP | Houston, TX 77010 | Gas Operator | Jan 2006 |
| 10273 | First Source Texas, Inc. | MT Pleasant, MI 48858 | Gas Operator | Nov 2004 |
| 10274 | First Sourcenergy Wyoming Inc | Gillette, WY 82718 | Gas Operator | Jul 2003 |
| 10275 | First South Energy Corp | Hartland, WI 53029 | Oil & Gas Operator | Dec 2014 |
| 10276 | First Texas Exploration Corp. | Arcadia, LA 71001 | Oil & Gas Operator | Aug 2003 |
| 10277 | First Zone Production | Salt Lake City, UT 84102 | Oil & Gas Operator | Dec 1997 |
| 10278 | Firstrike Energy Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Jan 2025 |
| 10279 | Fischer Operating Corporation | Victoria, TX 77902 | Oil & Gas Operator | Jan 1999 |
| 10280 | Fiscus Drilling Co., Inc. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2015 |
| 10281 | Fishburn Producing Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 2024 |
| 10282 | Fishburn Services Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 1990 |
| 10283 | Fishcreek Minerals, LLC | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 10284 | Fisher Ellis R | Bristow, OK 74010-8515 | Oil & Gas Operator | Dec 2015 |
| 10285 | Fisher Ernest B | Bristow, OK 74010 | Oil Operator | Jul 2024 |
| 10286 | Fisher Joint Venture | | Oil & Gas Operator | Oct 1998 |
| 10287 | Fisher McCall Oil And Gas Inc | | Oil Operator | Dec 2014 |
| 10288 | Fisher Oil Co. | Big Lake, TX 76932 | Oil & Gas Operator | Jun 2025 |
| 10289 | Fisher, Jack Inc. | Abilene, TX 79603 | Oil & Gas Operator | Sep 2001 |
| 10290 | Fisher, L. C. Jr. | Longview, TX 75608 | Oil & Gas Operator | May 1993 |
| 10291 | Fisk Family Farms LLC | | Gas Operator | Apr 2025 |
| 10292 | Fitch Petroleum Company Inc | Adair, OK 74330 | Oil Operator | Nov 2024 |
| 10293 | Fite Oil & Gas, Inc. | Shreveport, LA 71163 | Oil & Gas Operator | Jun 2025 |
| 10294 | Fitkin Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1994 |
| 10295 | Fitts, B.K. Oil & Gas | Bowie, TX 76230 | Oil & Gas Operator | Jun 2025 |
| 10296 | Fitzgerald Oil Company | Waurika, OK 73573 | Oil Operator | Apr 2025 |
| 10297 | Fitzgerald Production Co. | Oil City, LA 71061 | Oil & Gas Operator | Dec 2024 |
| 10298 | Fitzgerald, Thomas J. | | Oil & Gas Operator | Dec 2023 |
| 10299 | Fitzpatrick, Stephen | Angola, NY 14006 | Gas Operator | Dec 2023 |
| 10300 | Fitzsimmons Randall W & Deborah S | Bartesville, OK 74006 | Oil & Gas Operator | Feb 2025 |