| 10401 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 10402 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 10403 | Foster Energy Group, LLC | Wolfforth, TX 79382 | Oil & Gas Operator | Sep 2024 |
| 10404 | Foster Gas Corporation | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2009 |
| 10405 | Foster Oil & Gas | Bartlesville, OK 74005 | Oil & Gas Operator | Mar 2014 |
| 10406 | Foster Oil LLC | | Oil Operator | Jul 2024 |
| 10407 | Foster Oilfield Service | Canton, OK 73724 | Oil & Gas Operator | Aug 2024 |
| 10408 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 10409 | Foster, Bill Operator | | Oil Operator | May 2022 |
| 10410 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 10411 | Foster, Gleason | Monticello, KY 42633 | Oil & Gas Operator | Dec 2022 |
| 10412 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 10413 | Foster-Brown Operations, Inc. | | Oil & Gas Operator | Apr 2003 |
| 10414 | Foti Oil & Gas, Inc. | | Oil Operator | Sep 1986 |
| 10415 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Nov 2024 |
| 10416 | Foundation Energy Managment LLC | Addison, TX 74119 | Oil & Gas Operator | Sep 2024 |
| 10417 | Foundation Energy MGT, LLC | | Oil & Gas Operator | Jan 2014 |
| 10418 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Nov 2024 |
| 10419 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 10420 | Fountain Oil And Gas Co. | | Gas Operator | Dec 1993 |
| 10421 | Fountainhead Resources LTD | | Oil & Gas Operator | Aug 2016 |
| 10422 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 10423 | Four A Oil Company Inc | Copan, OK 74022 | Oil Operator | Aug 2022 |
| 10424 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |
| 10425 | Four Brothers Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Jan 2020 |
| 10426 | Four C Oil & Gas Corp. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 10427 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | Nov 2024 |
| 10428 | Four Corners Exploration Co | Farmington, NM 87499 | Oil & Gas Operator | Sep 2024 |
| 10429 | Four Corners Petroleum II, LLC | Denver, CO 80215 | Oil & Gas Operator | Feb 2023 |
| 10430 | Four Diamond Operating, LLC | Kilgore, TX 75663 | Oil Operator | Nov 2024 |
| 10431 | Four Forty One Oil Co. | Natalia, TX 78059 | Oil & Gas Operator | Nov 2024 |
| 10432 | Four H Oil Properties | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 10433 | Four K Production | Pampa, TX 79065 | Oil & Gas Operator | Nov 2024 |
| 10434 | Four Kin Oil Co | Muenster, TX 76252 | Oil & Gas Operator | Dec 2001 |
| 10435 | Four Leaf Land Company | West Union, WV 26456-0000 | Oil & Gas Operator | Dec 2021 |
| 10436 | Four North Inc | Atoka, OK 74525 | Oil Operator | Feb 2004 |
| 10437 | Four R Operating Company, LLC | Smackover, AR 71762 | Oil & Gas Operator | Jun 2024 |
| 10438 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 10439 | Four Seas Exploration LLC | Oklahoma City, OK 73101-1557 | Oil & Gas Operator | Dec 2019 |
| 10440 | Four Seasons, Inc. | | Oil & Gas Operator | Jun 1983 |
| 10441 | Four Sevens Oil Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 10442 | Four Sevens Operating Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 10443 | Four Square Oil Company Inc | Kellyville, OK 74039 | Oil Operator | Mar 2011 |
| 10444 | Four Square Production, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Aug 2004 |
| 10445 | Four Star Development Corp. | | Oil & Gas Operator | Feb 2013 |
| 10446 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Jun 2024 |
| 10447 | Four Star Oil - | | Oil Operator | Dec 1987 |
| 10448 | Four Star Oil Company | | Oil & Gas Operator | May 2015 |
| 10449 | Four Starr Energy, Inc. | Dallas, TX 75243 | Gas Operator | May 2016 |
| 10450 | Four Starr Production, LLC | Dallas, TX 75243 | Oil & Gas Operator | Nov 2024 |
| 10451 | Four States Petr | | Oil & Gas Operator | Nov 1990 |
| 10452 | Four Teams Oil Production & Exploration Inc. | | Oil & Gas Operator | Sep 2024 |
| 10453 | Four W Oil Co., LLC | | Oil Operator | Dec 2023 |
| 10454 | Four-A Energy LLC | Cody, WY 82414 | Oil Operator | Oct 2024 |
| 10455 | Four-C Management & Industries | Rockdale, TX 76567 | Oil & Gas Operator | Aug 2008 |
| 10456 | Four-J Oil Ops | Osawatomie, KS 66064 | Oil Operator | Mar 1998 |
| 10457 | Four-O-One Corporation | Edmond, OK 73013-1977 | Oil & Gas Operator | Mar 2015 |
| 10458 | Four-S Oil Co., LTD. | Kilgore, TX 75663 | Oil Operator | Apr 2007 |
| 10459 | Four-Way Oper In | | Oil Operator | Aug 1994 |
| 10460 | Four-Way Operating, Inc. | Great Bend, KS 67530 | Oil Operator | Sep 2013 |
| 10461 | Fourcooks Oil & Gas, LLC | Waco, TX 76710 | Oil Operator | Nov 2024 |
| 10462 | Fourpoint Energy, LLC | Denver, CO 80206 | Oil & Gas Operator | Nov 2024 |
| 10463 | Fourstar Resources LLC | Westlake, TX 76262 | Oil Operator | Sep 2024 |
| 10464 | Fourth Floor Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Nov 2024 |
| 10465 | Fourth Quarter Program | Boulder, CO 80306 | Oil Operator | Feb 2006 |
| 10466 | Fourway Oil Company | Longview, TX 75606 | Oil & Gas Operator | Nov 2024 |
| 10467 | Fourwinds Oil Corporation | Hays, KS 67601 | Oil Operator | Jul 2024 |
| 10468 | Fouts Operations Inc | Glouster, OH 45732 | Oil & Gas Operator | Dec 1987 |
| 10469 | Fouts William Bruce | Glouster, OH 45732 | Oil & Gas Operator | Dec 2022 |
| 10470 | Fowler Oil & Gas LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Nov 2024 |
| 10471 | Fox Auto Sales Of Tennessee, Inc | | Oil Operator | Dec 2012 |
| 10472 | Fox Construction, Inc. | North Collins, NY 14111 | Gas Operator | Dec 2023 |
| 10473 | Fox Jr Jimmy D | Bartlesville, OK 74003 | Oil & Gas Operator | Nov 2005 |
| 10474 | Fox Northeastern Oil & Gas Corp | Bartlesville, OK 74003-2226 | Oil & Gas Operator | Sep 2024 |
| 10475 | Fox Oil And Gas Inc | Houston, TX 77002 | Gas Operator | Dec 2002 |
| 10476 | Fox Oil, Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 1999 |
| 10477 | Fox Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Sep 2024 |
| 10478 | Fox Production Co LLC | Ardmore, OK 73401-6305 | Oil & Gas Operator | Aug 2009 |
| 10479 | Fox, Don | Chase, KS 67524 | Oil & Gas Operator | Jul 2006 |
| 10480 | Fox, Hewitt B., Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Nov 2024 |
| 10481 | Fox, Warren F. Family Trust | Plains, KS 67869 | Oil Operator | Jun 2016 |
| 10482 | Foxborough Energy Company, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2024 |
| 10483 | Foxfire Expl. | | Oil Operator | Jun 1997 |
| 10484 | Foxfire Explorat | | Oil Operator | Dec 1986 |
| 10485 | Foxfire Productions, Inc. | Corsicana, TX 75110 | Oil Operator | Jul 2014 |
| 10486 | FP Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2008 |
| 10487 | FP Operations, LLC | Dallas, TX 75219 | Oil & Gas Operator | Aug 2024 |
| 10488 | Fpco Oil & Gas Co. | New Orleans, LA 70160 | Oil & Gas Operator | Jul 2024 |
| 10489 | Fraco Services, Inc. | Burkburnett, TX 76354 | Oil Operator | Nov 2024 |
| 10490 | Fractal Operating LLC | Ardmore, OK 73401-6515 | Gas Operator | Sep 2020 |
| 10491 | Fram Operating LLC | | Oil & Gas Operator | Dec 2018 |
| 10492 | Fran Oil, Inc. | | Oil & Gas Operator | Jun 2024 |
| 10493 | Frances Oil Co. | Corsicana, TX 75110 | Oil & Gas Operator | Nov 2024 |
| 10494 | Francis Energy Inc | | Oil & Gas Operator | May 2000 |
| 10495 | Francis Oil & Gas, LLC | | Oil & Gas Operator | Jan 2011 |
| 10496 | Francis Well Service, Inc. | Sandyville, WV 25275 | Oil & Gas Operator | Dec 2021 |
| 10497 | Francis, Joseph | | Oil Operator | Dec 1982 |
| 10498 | Francis-Guido Oil Expl. Inc. | | Oil Operator | Feb 1986 |
| 10499 | Francis-Guido Operating Co Inc | | Oil & Gas Operator | Dec 1987 |
| 10500 | Francisco Creek Operating, Inc. | Castroville, TX 78009 | Oil Operator | Nov 2024 |