| 10401 | Firewater, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2011 |
| 10402 | Firewheel Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2017 |
| 10403 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 10404 | First Alliance CH | Erie, PA 16506-5024 | Gas Operator | Dec 2017 |
| 10405 | First Amer Energy Inc | Bradford, PA 16701-0184 | Oil & Gas Operator | Dec 2024 |
| 10406 | First American Operating Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2006 |
| 10407 | First Aransas Reserves, Inc. | Alvin, TX 77511 | Oil & Gas Operator | Mar 2018 |
| 10408 | First Ascent Operating LLC | Addison, TX 75001 | Oil Operator | Jan 2025 |
| 10409 | First Chinese Baptist Church | | Oil Operator | Dec 2006 |
| 10410 | First Energy Cor | | Oil Operator | Aug 1990 |
| 10411 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 10412 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 10413 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
| 10414 | First Hardin Corp. | Fulshear, TX 77441 | Oil & Gas Operator | Nov 1994 |
| 10415 | First Liberty Energy Inc | Boca Raton, FL 33432-5942 | Oil & Gas Operator | Jul 2013 |
| 10416 | First National Finance Corporation | | Oil Operator | Dec 1995 |
| 10417 | First National O | | Oil & Gas Operator | Aug 1990 |
| 10418 | First National Oil, Inc. | Edmond, OK 73003 | Oil & Gas Operator | Jan 2025 |
| 10419 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | Jan 2025 |
| 10420 | First Oil And Gas Company | | Oil Operator | Dec 2024 |
| 10421 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 10422 | First Reserve Oil & Gas Co | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 10423 | First Rock, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 10424 | First Solid Energy Group, LP | Missouri City, TX 77489 | Oil & Gas Operator | Apr 2025 |
| 10425 | First Source Gas, LP | Houston, TX 77010 | Gas Operator | Jan 2006 |
| 10426 | First Source Texas, Inc. | MT Pleasant, MI 48858 | Gas Operator | Nov 2004 |
| 10427 | First Sourcenergy Wyoming Inc | Gillette, WY 82718 | Gas Operator | Jul 2003 |
| 10428 | First South Energy Corp | Hartland, WI 53029 | Oil & Gas Operator | Dec 2014 |
| 10429 | First Texas Exploration Corp. | Arcadia, LA 71001 | Oil & Gas Operator | Aug 2003 |
| 10430 | First Zone Production | Salt Lake City, UT 84102 | Oil & Gas Operator | Dec 1997 |
| 10431 | Firstrike Energy Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Jan 2025 |
| 10432 | Fischer Operating Corporation | Victoria, TX 77902 | Oil & Gas Operator | Jan 1999 |
| 10433 | Fiscus Drilling Co., Inc. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2015 |
| 10434 | Fishburn Producing Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 2024 |
| 10435 | Fishburn Services Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 1990 |
| 10436 | Fishcreek Minerals, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 10437 | Fisher Ellis R | Bristow, OK 74010-8515 | Oil & Gas Operator | Dec 2015 |
| 10438 | Fisher Ernest B | Bristow, OK 74010 | Oil Operator | Jul 2024 |
| 10439 | Fisher Joint Venture | | Oil & Gas Operator | Oct 1998 |
| 10440 | Fisher McCall Oil And Gas Inc | | Oil Operator | Dec 2014 |
| 10441 | Fisher Oil Co. | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2025 |
| 10442 | Fisher, Jack Inc. | Abilene, TX 79603 | Oil & Gas Operator | Sep 2001 |
| 10443 | Fisher, L. C. Jr. | Longview, TX 75608 | Oil & Gas Operator | May 1993 |
| 10444 | Fisk Family Farms LLC | | Gas Operator | Dec 2024 |
| 10445 | Fitch Petroleum Company Inc | Adair, OK 74330 | Oil Operator | Nov 2024 |
| 10446 | Fite Oil & Gas, Inc. | Shreveport, LA 71163 | Oil & Gas Operator | Apr 2025 |
| 10447 | Fitkin Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1994 |
| 10448 | Fitts, B.K. Oil & Gas | Bowie, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 10449 | Fitzgerald & Dennis | | Oil & Gas Operator | Apr 2014 |
| 10450 | Fitzgerald Oil Company | Waurika, OK 73573 | Oil Operator | Feb 2025 |
| 10451 | Fitzgerald Production Co. | Oil City, LA 71061 | Oil & Gas Operator | Dec 2024 |
| 10452 | Fitzgerald, Thomas J. | | Oil & Gas Operator | Dec 2023 |
| 10453 | Fitzpatrick, Stephen | Angola, NY 14006 | Gas Operator | Dec 2023 |
| 10454 | Fitzsimmons Randall W & Deborah S | Bartesville, OK 74006 | Oil & Gas Operator | Jan 2025 |
| 10455 | Five D Co | Cactus, TX 79013 | Oil & Gas Operator | Sep 1996 |
| 10456 | Five K Partnership | Graham, TX 76450 | Oil & Gas Operator | Oct 2023 |
| 10457 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Jan 2025 |
| 10458 | Five State Energy Co | Dallas, TX 75206 | Oil & Gas Operator | Oct 1995 |
| 10459 | Five States Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 10460 | Five States Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Feb 2008 |
| 10461 | Five States Operating Company LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2025 |
| 10462 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Apr 2025 |
| 10463 | Fiveash Operating Company, Inc. | Christoval, TX 76935 | Oil & Gas Operator | Aug 2003 |
| 10464 | Fivestones Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 10465 | FJH Oil Company | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 10466 | Fjo Energy, LLC | Fairhope, AL 36532 | Oil Operator | Apr 2025 |
| 10467 | Flag DRLG Co, Inc | Greenville, KY 42345 | Oil & Gas Operator | Dec 2021 |
| 10468 | Flag Energy, LLC | Centerton, AR 72719 | Oil & Gas Operator | Nov 2018 |
| 10469 | Flag Transport Inc | Shattuck, OK 73858-0848 | Oil Operator | Dec 2014 |
| 10470 | Flag-Redfern Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2002 |
| 10471 | Flagin Operating LLC | Norman, OK 73072-2405 | Oil & Gas Operator | Jan 2025 |
| 10472 | Flahive Oil & Gas LLC | Golden, CO 80401 | Oil Operator | Oct 1995 |
| 10473 | Flairtex Resources, Inc. | Houston, TX 77040 | Oil & Gas Operator | Oct 1998 |
| 10474 | Flame Energy Co Inc | Dalton, OH 44618 | Oil & Gas Operator | Dec 2006 |
| 10475 | Flamingo Oil & Gas | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 10476 | Flamingo Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Apr 2025 |
| 10477 | Flanagan Energy Company LLC | Walters, OK 73572 | Oil Operator | Nov 2024 |
| 10478 | Flanigan Bros | Edinboro, PA 16412-1443 | Oil & Gas Operator | Dec 2024 |
| 10479 | Flare Oil Inc | Rockport, TX 78382 | Oil & Gas Operator | Apr 2025 |
| 10480 | Flare Resources Inc. | Houston, TX 77002 | Gas Operator | Jun 2006 |
| 10481 | Flare, Inc. | | Oil & Gas Operator | Jul 1995 |
| 10482 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 10483 | Flash Gas & Oil Southwest, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Oct 2019 |
| 10484 | Flash Gas & Oil, Inc. | | Oil & Gas Operator | May 1991 |
| 10485 | Flat Creek Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2025 |
| 10486 | Flat Rock Energy Company | Skiatook, OK 74070-0100 | Oil & Gas Operator | May 2017 |
| 10487 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Apr 2025 |
| 10488 | Flatirons Development LLC | Westminster, CO 80020-2771 | Gas Operator | Dec 2015 |
| 10489 | Flatirons Resources LLC | Westminster, CO 80021 | Oil & Gas Operator | Dec 2022 |
| 10490 | Flatland Energy, LLC | Gardner, KS 66030 | Oil Operator | Dec 2024 |
| 10491 | Flatland Oil Com | | Oil Operator | Sep 1985 |
| 10492 | Flatlander Energy LLC | Blackwell, OK 74631 | Oil & Gas Operator | Jan 2025 |
| 10493 | Flatlander Petroleum LLC | | Oil & Gas Operator | Dec 2024 |
| 10494 | Flatonia Energy, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 10495 | Flatt Energy Inc | | Oil & Gas Operator | Sep 2019 |
| 10496 | Flatwater Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 10497 | Flavian Oil Company | Dallas, TX 75206 | Gas Operator | Jan 1997 |
| 10498 | Fleeharty Willie W | | Oil & Gas Operator | Jun 1991 |
| 10499 | Fleeman Teresa R | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 10500 | Fleet Frank T | Ada, OK 74821-0729 | Oil & Gas Operator | Feb 2003 |