| 10001 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Jun 2025 |
| 10002 | Farmer Operating, LLC | Olney, TX 76374 | Oil & Gas Operator | Dec 2019 |
| 10003 | Farmer, Hayden | Olney, TX 76374 | Oil & Gas Operator | Feb 1997 |
| 10004 | Farmer, Lewis & Hayden | Olney, TX 76374 | Oil & Gas Operator | Oct 2008 |
| 10005 | Farmers Energy Corporation | Tulsa, OK 74103-3525 | Oil & Gas Operator | Nov 2021 |
| 10006 | Farmers Of Tulsa Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 1997 |
| 10007 | Farmers Union Central Exchange, Inc. | | Oil & Gas Operator | May 1983 |
| 10008 | Farmland Industries Inc | Kansas City, MO 64195-0111 | Oil & Gas Operator | Nov 1995 |
| 10009 | Farnsworth & Kaiser Oil Company | Newcastle, WY 82701 | Oil & Gas Operator | Sep 2012 |
| 10010 | Farr Enterprises Inc | West Union, WV 24656 | Oil & Gas Operator | Dec 2021 |
| 10011 | Farrar Carolyn Dba C J Investments | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2024 |
| 10012 | Farrar Oil Company | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2000 |
| 10013 | Farrar Oilwell S | | Oil & Gas Operator | Jul 1986 |
| 10014 | Farrar Pump & Su | | Oil & Gas Operator | Dec 1996 |
| 10015 | Farrar Pump & Supply Co., Inc. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2009 |
| 10016 | Farrar, William A. III & William H. | Dewittville, NY 14728 | Gas Operator | Dec 2024 |
| 10017 | Farrell Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | Nov 2025 |
| 10018 | Farrex, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Oct 2008 |
| 10019 | Farrington & Hepler Gas & Oil Inc | Seneca, PA 16346-0546 | Oil & Gas Operator | Dec 2024 |
| 10020 | Farrington, Walter L., Jr. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2002 |
| 10021 | Farris Oil, Inc. | Sedan, KS 67361 | Oil Operator | Apr 2025 |
| 10022 | Farris Well Service | | Oil & Gas Operator | Dec 2021 |
| 10023 | Farthing Don Oil | | Oil & Gas Operator | Jun 1994 |
| 10024 | Fas Services, Inc. | | Oil Operator | Apr 2005 |
| 10025 | Faseler, Herb | Hondo, TX 78861 | Oil Operator | Nov 2025 |
| 10026 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | Nov 2025 |
| 10027 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 10028 | Fastrak Energy, LLC | Cherryvale, KS 67335 | Oil & Gas Operator | Jun 2025 |
| 10029 | Faul Energy, Inc. | | Oil & Gas Operator | Oct 1988 |
| 10030 | Faulconer Energy, LLC | Tyler, TX 75711 | Oil & Gas Operator | Nov 2025 |
| 10031 | Faulconer Inc* Vernon E | | Gas Operator | Oct 2018 |
| 10032 | Faulconer, Vernon E., Inc. | Tyler, TX 75711 | Oil & Gas Operator | Aug 2025 |
| 10033 | Faulkner Corporation | Oklahoma City, OK 73154-9704 | Oil & Gas Operator | Jan 2017 |
| 10034 | Faulkner DRLG Co, Inc | | Oil Operator | Dec 2023 |
| 10035 | Faust H Floyd | Cardington, OH 43315 | Oil Operator | Dec 1998 |
| 10036 | Fawnwood Energy Inc | Bruin, PA 16022-0157 | Oil & Gas Operator | Dec 2019 |
| 10037 | Fay A. Williams | | Oil & Gas Operator | Dec 2024 |
| 10038 | FBF Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Aug 2025 |
| 10039 | FBN Operating Co | | Oil Operator | Nov 1986 |
| 10040 | FDF Resources | Newcastle, WY 82701 | Oil & Gas Operator | Sep 2025 |
| 10041 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Nov 2025 |
| 10042 | Fe Co. | Derby, KS 67037 | Oil & Gas Operator | Dec 2009 |
| 10043 | Fe-NM, LLC | Tyler, TX 75711 | Oil & Gas Operator | Aug 2025 |
| 10044 | Feagan Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Nov 2025 |
| 10045 | Fear & Duncan | | Oil Operator | Jul 1979 |
| 10046 | Fears George E | | Oil & Gas Operator | Mar 2019 |
| 10047 | Feazel Operating Company, Inc. | | Oil & Gas Operator | Feb 1979 |
| 10048 | Fed Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 10049 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 10050 | Federal Hill Land Co., Inc. | | Gas Operator | Apr 1991 |
| 10051 | Federal Oil & Gas - Rood L L C | | Oil & Gas Operator | Aug 2025 |
| 10052 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Nov 2025 |
| 10053 | Federated Natural Resources Corp | | Oil & Gas Operator | Oct 1989 |
| 10054 | Federated Natural Resources Corp And Fede | | Oil & Gas Operator | Feb 1989 |
| 10055 | Federated Oil & Gas Properties | Traverse City, MI 49685 | Gas Operator | Mar 2014 |
| 10056 | Federated Oil And Gas Properties Inc | | Oil & Gas Operator | Aug 2025 |
| 10057 | Federer, H. C. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 1993 |
| 10058 | Fee Energy Corporation | | Oil & Gas Operator | Jul 1978 |
| 10059 | Feeley Ranch LLC | Broken Arrow, OK 74014 | Gas Operator | Dec 2017 |
| 10060 | Fees Jr And Son Oil & Gas* Walter S | | Oil & Gas Operator | Aug 2025 |
| 10061 | Feezel A L LLC | Ada, OK 74821-1371 | Oil & Gas Operator | Mar 2015 |
| 10062 | Feikls Oil & Gas Inc | Eagle, ID 83616-7713 | Oil & Gas Operator | Dec 2024 |
| 10063 | Feinen, Richard C. | Forestville, NY 14062 | Gas Operator | Dec 2024 |
| 10064 | Feldco, Inc. | | Oil & Gas Operator | Apr 2007 |
| 10065 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Nov 2025 |
| 10066 | Felix Energy Holdings II, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2020 |
| 10067 | Felix Energy LLC | Denver, CO 80202-1467 | Oil & Gas Operator | Jun 2025 |
| 10068 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 10069 | Fell Oil And Gas Inc | Tulsa, OK 74157-9487 | Oil & Gas Operator | Aug 2016 |
| 10070 | Fell, Clarence | | Gas Operator | Dec 1972 |
| 10071 | Fell-Brecklein-Town Oil Co. | | Oil Operator | Dec 1975 |
| 10072 | Fellows Energy LTD | Price, UT 84501-2016 | Gas Operator | Sep 2007 |
| 10073 | Felmont Oil Corporation | Walnut Creek, CA 94596-3568 | Oil & Gas Operator | Feb 1990 |
| 10074 | Felty Drilling Co. Inc | Burkburnett, TX 76354 | Oil & Gas Operator | Nov 2025 |
| 10075 | Felty Production, Inc. | Burkburnett, TX 76354 | Oil Operator | Nov 2025 |
| 10076 | Felty, F. T. Operating Company | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 2018 |
| 10077 | Femco Services Inc | Lindsay, OK 73052-0632 | Oil & Gas Operator | Nov 2006 |
| 10078 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 10079 | Fender Expl & Prod Co., L.L.C. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2004 |
| 10080 | Fender, Mildred A. | Russell, KS 67665 | Oil & Gas Operator | Jun 2000 |
| 10081 | Fenix Petroleum Group LLC | Washington, TX 77880 | Oil Operator | Jul 2019 |
| 10082 | Fenn, Bill Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2008 |
| 10083 | Fenno, Tom Prod. | FT Collins, CO 80524 | Oil & Gas Operator | Mar 2018 |
| 10084 | Fenoglio Oil Company | Nocona, TX 76255 | Oil Operator | Nov 2025 |
| 10085 | Fenoglio, Donnie Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Feb 2014 |
| 10086 | Fenway Energy Development Co. | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 10087 | Ferenbaugh Albert & Denise | Danville, OH 43014 | Oil & Gas Operator | Dec 2024 |
| 10088 | Fergus Oil & Gas, LLC | Allen, TX 75013 | Oil Operator | Nov 2025 |
| 10089 | Ferguson & Bosworth | | Oil & Gas Operator | May 2007 |
| 10090 | Ferguson Bob | Casper, WY 82605 | Oil Operator | May 2004 |
| 10091 | Ferguson Energy Inc | Evanston, WY 82930 | Oil & Gas Operator | Jul 2025 |
| 10092 | Ferguson Oil & Gas Inc. | Austin, TX 78746 | Oil & Gas Operator | Nov 2025 |
| 10093 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
| 10094 | Ferguson Orval L | | Oil & Gas Operator | Oct 1983 |
| 10095 | Ferguson, S. M. Jr., Inc. | Dallas, TX 75218 | Oil & Gas Operator | Nov 2025 |
| 10096 | Ferguson-Burns Leasing Co. | Rockdale, TX 76567 | Oil & Gas Operator | Oct 2007 |
| 10097 | Ferguson-Hunter Explor Inc | N Little Rock, AR 72120-1667 | Oil & Gas Operator | Aug 2016 |
| 10098 | Fernwood Corporation | | Oil Operator | Dec 1986 |
| 10099 | Ferraro Energy Corporation | Oklahoma City, OK 73114-6629 | Oil & Gas Operator | Aug 2013 |
| 10100 | Ferreira Oil Properties LLC | Carefree, AZ 85377 | Oil Operator | Apr 2014 |