| 10401 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
| 10402 | Forexco, Inc. | Greensboro, NC 27438 | Oil & Gas Operator | Dec 2020 |
| 10403 | Forge Energy Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2023 |
| 10404 | Forge Energy, LLC | San Antonio, TX 78249 | Oil & Gas Operator | Apr 2019 |
| 10405 | Fork Run Oil & Gas LLC | Sheffield, PA 16347-0012 | Oil & Gas Operator | Dec 2024 |
| 10406 | Forman Exploration Company | | Oil & Gas Operator | Oct 1988 |
| 10407 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 10408 | Formation Mechan | | Oil Operator | Dec 1986 |
| 10409 | Formation Recovery LLC | Weatherford, TX 76087 | Oil & Gas Operator | Nov 2025 |
| 10410 | Formation Resources LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Nov 2025 |
| 10411 | Formax Oil Company | | Oil & Gas Operator | Dec 1993 |
| 10412 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Nov 2025 |
| 10413 | Formentera Opr LLC | Austin, TX 78701-4889 | Gas Operator | Aug 2025 |
| 10414 | Formholtz, Allen | Lakeview, NY 14085 | Gas Operator | Dec 2024 |
| 10415 | Formor Operating Inc | Tyler, TX 75701 | Oil & Gas Operator | May 2013 |
| 10416 | Fornash Oil LLC | Waynesburg, OH 44688 | Oil & Gas Operator | Dec 2024 |
| 10417 | Forney & McCombs | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 10418 | Forney Oil Corporation | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 10419 | Forrest A Ward | Okmulgee, OK 74447-8891 | Oil & Gas Operator | Jul 2025 |
| 10420 | Forrest Energy, LLC | Hattiesburg, MS 39401 | Oil & Gas Operator | Feb 1998 |
| 10421 | Forrest Exploration & Dev, LLC | | Gas Operator | May 2003 |
| 10422 | Forrest Richard E | New Bethlehem, PA 16242-2547 | Gas Operator | Dec 2019 |
| 10423 | Forrest, Catherine M | | Oil & Gas Operator | Apr 2025 |
| 10424 | Forrestel II, E. Peter | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 10425 | Forrester Oil & Gas Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2025 |
| 10426 | Forrester, J. L. | Longview, TX 75606 | Oil & Gas Operator | Nov 2025 |
| 10427 | Forsan Oil Company | Forsan, TX 79733 | Oil & Gas Operator | Jul 2008 |
| 10428 | Forster Oil Co. | | Oil & Gas Operator | Dec 2016 |
| 10429 | Forster, Fred Jr. | Midland, TX 79705 | Oil & Gas Operator | Aug 2008 |
| 10430 | Forsythe Lawana | Wilson, OK 73463 | Oil Operator | Mar 2020 |
| 10431 | Forsythe Trucking Inc | Wilson, OK 73463 | Oil & Gas Operator | Jul 2025 |
| 10432 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Nov 2025 |
| 10433 | Fort Exploration Company | FT Smith, AR 72901 | Gas Operator | May 2001 |
| 10434 | Fort Operating Company | Fort Smith, AR 72923 | Gas Operator | Nov 2018 |
| 10435 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Nov 2025 |
| 10436 | Fort Worth Production Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 1996 |
| 10437 | Fortay Inc. | Sunray, TX 79086 | Oil & Gas Operator | Nov 2025 |
| 10438 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 10439 | Forte Energy Corpration | Houston, TX 77024-1209 | Oil & Gas Operator | Jan 1995 |
| 10440 | Fortenberry Operating Co., Inc | | Oil & Gas Operator | Nov 2003 |
| 10441 | Fortenbery Drilling Co., Inc. | | Oil & Gas Operator | Oct 1979 |
| 10442 | Fortenbery Operating Co Inc | | Oil & Gas Operator | May 1993 |
| 10443 | Fortenbery Wade | | Oil & Gas Operator | May 1980 |
| 10444 | Fortitude Exploration Co | | Oil & Gas Operator | Aug 2025 |
| 10445 | Fortress Energy Corp | Pittsburgh, PA 15217-4207 | Oil & Gas Operator | Dec 2023 |
| 10446 | Fortson Oil | | Oil & Gas Operator | Jan 1998 |
| 10447 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 10448 | Fortuna Energy Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2014 |
| 10449 | Fortuna Exploration, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Nov 2025 |
| 10450 | Fortuna Resources Dvlpment, LLC | Houston, TX 77055 | Oil & Gas Operator | Nov 2025 |
| 10451 | Fortune Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Nov 2025 |
| 10452 | Fortune Gas & Oil | Shreveport, LA 71118-3457 | Oil & Gas Operator | Dec 2002 |
| 10453 | Fortune Gas & Oil, Inc. | | Oil & Gas Operator | Apr 2004 |
| 10454 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 10455 | Fortune Oil LTD | Salt Lake City, UT 84106 | Oil & Gas Operator | May 1987 |
| 10456 | Fortune Operating Company | Willis, TX 77378 | Oil & Gas Operator | Nov 2025 |
| 10457 | Fortune Operating, Inc. | Bowling Green, KY 42104 | Oil & Gas Operator | Nov 2025 |
| 10458 | Fortune Petroleum Corporation | | Oil & Gas Operator | Dec 1994 |
| 10459 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 10460 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Nov 2025 |
| 10461 | Fortune-Shelby | | Oil & Gas Operator | Mar 1989 |
| 10462 | Fortune-Western | | Oil Operator | Dec 1989 |
| 10463 | Forty Acres Energy, LLC | Houston, TX 77079173 | Oil & Gas Operator | Aug 2025 |
| 10464 | Fortyfive Energy LLC | | Gas Operator | Jul 2025 |
| 10465 | Forum Exploration Co., L.P. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2010 |
| 10466 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2025 |
| 10467 | Foshee Operating, LLC | | Oil & Gas Operator | Jun 2004 |
| 10468 | Foss, Arthur & Ann | Corfu, NY 14036 | Gas Operator | Dec 2024 |
| 10469 | Fossil Creek Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2025 |
| 10470 | Fossil Creek Energy, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 10471 | Fossil Creek Resources LLC | Arlington, TX 76011-5597 | Oil & Gas Operator | Mar 2015 |
| 10472 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | Nov 2025 |
| 10473 | Fossil Energy, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 10474 | Fossil Fuel Inc | Dallas, TX BAD ADDR | Oil & Gas Operator | Dec 1998 |
| 10475 | Fossil Fuels Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2000 |
| 10476 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Nov 2025 |
| 10477 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | Nov 2025 |
| 10478 | Fossil Resources LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 10479 | Fossil Resources, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2017 |
| 10480 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 10481 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 10482 | Foster Energy Group, LLC | Wolfforth, TX 79382 | Oil & Gas Operator | Sep 2025 |
| 10483 | Foster Gas Corporation | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2009 |
| 10484 | Foster Oil & Gas | Bartlesville, OK 74005 | Oil & Gas Operator | Mar 2014 |
| 10485 | Foster Oil LLC | | Oil Operator | Jun 2025 |
| 10486 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 10487 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 10488 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 10489 | Foster-Brown Operations, Inc. | | Oil & Gas Operator | Apr 2003 |
| 10490 | Foti Oil & Gas, Inc. | | Oil Operator | Sep 1986 |
| 10491 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Nov 2025 |
| 10492 | Foundation Energy Managment LLC | Addison, TX 74119 | Oil & Gas Operator | Sep 2025 |
| 10493 | Foundation Energy MGT, LLC | | Oil & Gas Operator | Jan 2014 |
| 10494 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Nov 2025 |
| 10495 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 10496 | Fountain Oil And Gas Co. | | Gas Operator | Dec 1993 |
| 10497 | Fountainhead Resources LTD | | Oil & Gas Operator | Apr 2016 |
| 10498 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 10499 | Four A Oil Company Inc | Copan, OK 74022 | Oil Operator | Aug 2022 |
| 10500 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |