| 10101 | Ferrell Gas Co. | | Gas Operator | Dec 1977 |
| 10102 | Ferris, Wakyn W. | Denver, CO 80202 | Oil Operator | Jun 1988 |
| 10103 | Ferry Lake Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 10104 | Fesco, LTD. | Alice, TX 78332 | Oil Operator | Nov 2025 |
| 10105 | Fetterman Samuel C SR | Rossiter, PA 15772 | Gas Operator | Dec 2022 |
| 10106 | Fewins, Gary D. | Moran, KS 66755 | Oil Operator | Jul 2019 |
| 10107 | FF&N Oil Company | Spearsville, LA 71277 | Oil Operator | Jul 2024 |
| 10108 | Ffa Petroleum Services | Victoria, TX 77903 | Oil & Gas Operator | Sep 2001 |
| 10109 | Ffa Petroleum Services, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Feb 2018 |
| 10110 | FG III LLC | Colleyville, TX 76034-4963 | Oil & Gas Operator | Apr 2018 |
| 10111 | FGB Energy, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2017 |
| 10112 | FGS Energy LLC | Duncan, OK 73533-1829 | Oil & Gas Operator | Jul 2025 |
| 10113 | FH Operation Company, Inc. | Dallas, TX 75381 | Oil & Gas Operator | Apr 2005 |
| 10114 | FH Petroleum Corp. | Billings, MT 59103 | Oil & Gas Operator | Aug 2025 |
| 10115 | Fha Investments LLC | Cushing, OK 74023 | Oil & Gas Operator | Jul 2025 |
| 10116 | Fha Operating LLC | Cushing, OK 74023-1030 | Oil & Gas Operator | Jun 2025 |
| 10117 | Fi-Ro Corporation | Natchez, MS BADADDR | Oil & Gas Operator | Nov 2001 |
| 10118 | Fidelity E&P Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2016 |
| 10119 | Fidelity Energy Co. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2008 |
| 10120 | Fidelity Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Dec 2009 |
| 10121 | Fidelity Explor. & Prod. Co. | Denver, CO 80202 | Oil & Gas Operator | Nov 2015 |
| 10122 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Sep 2025 |
| 10123 | Fidelity Petroleum Corporation | Plano, TX 75074 | Oil & Gas Operator | Nov 2025 |
| 10124 | Fidgets Energy LLC | Checotah, OK 74426-5309 | Oil Operator | Oct 2024 |
| 10125 | Field Petroleum Corp. | San Antonio, TX 78216 | Oil & Gas Operator | Nov 2025 |
| 10126 | Field Production Company | Cleburne, TX 76033 | Oil & Gas Operator | Mar 2023 |
| 10127 | Field Service, Inc. | West Seneca, NY 14206 | Gas Operator | Dec 2024 |
| 10128 | Fields Exploration, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 2015 |
| 10129 | Fields Oil & Gas Company, LLC | Dallas, TX 75230 | Oil & Gas Operator | Nov 2025 |
| 10130 | Fields, Bert, Jr. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2015 |
| 10131 | Fieldstone Exploration Company | | Oil & Gas Operator | Jan 2007 |
| 10132 | Fieldwood Energy LLC | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
| 10133 | Fieldwood Energy Offshore LLC | Houston, TX 77042 | Oil & Gas Operator | Nov 2025 |
| 10134 | Fieldwood Onshore LLC | Houston, TX 77098 | Oil & Gas Operator | Nov 2025 |
| 10135 | Fiesta Energy LLC | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Nov 2025 |
| 10136 | Fife Oil & Gas | | Oil Operator | Oct 1987 |
| 10137 | Fife Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 10138 | Fife Oil Company, Inc. | | Oil & Gas Operator | Feb 2008 |
| 10139 | Fifty Third Corp. & K.M.O.C. | | Gas Operator | Jul 1994 |
| 10140 | Fifty-Third Corporation | | Gas Operator | Jul 1994 |
| 10141 | Figgie Natural Resources | Wickliffe, OH 44092 | Oil & Gas Operator | Oct 1995 |
| 10142 | Figure 3 Operating LLC | Tyler, TX 75703 | Oil Operator | Dec 2024 |
| 10143 | Filco Incorporated | | Oil & Gas Operator | Aug 2025 |
| 10144 | Fiml Natural Resources LLC (FNR) | Denver, CO 80202-4438 | Oil & Gas Operator | Jul 2014 |
| 10145 | Fiml Natural Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2014 |
| 10146 | Fin Energy, LLC | Wichita Falls, TX 76308 | Oil Operator | Nov 2025 |
| 10147 | Fin-Oil, Inc. | | Oil & Gas Operator | Apr 1985 |
| 10148 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 10149 | Fina Oil & Chemical | Midland, TX 797022455 | Oil & Gas Operator | Apr 1999 |
| 10150 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 10151 | Fina Oil& Chem Co/Marathon Oil | | Oil & Gas Operator | Dec 1992 |
| 10152 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Nov 2025 |
| 10153 | Finch-Crestmont | Houston, TX 77027 | Oil & Gas Operator | Oct 2012 |
| 10154 | Finck Oil & Gas Co | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 10155 | Finders Co And Sullivan And Co | | Oil & Gas Operator | May 1987 |
| 10156 | Finders Co The | | Oil & Gas Operator | Jan 1998 |
| 10157 | Fine Jack | Pensacola, FL 32516 | Oil Operator | May 1995 |
| 10158 | Finger Oil & Gas, Inc. | Castroville, TX 78009 | Oil & Gas Operator | May 2021 |
| 10159 | Finkelstein, Jack, Trustee | Houston, TX 77027 | Oil & Gas Operator | Apr 2007 |
| 10160 | Finlay Energy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 1999 |
| 10161 | Finley Oil Compa | | Oil Operator | Oct 1992 |
| 10162 | Finley Oil Company, LLC | Liberty, TX 77575 | Oil Operator | Nov 2025 |
| 10163 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Nov 2025 |
| 10164 | Finley, Billy D | Burkesville, KY 42717 | Oil Operator | Dec 2020 |
| 10165 | Finnell Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2009 |
| 10166 | Finnell Oil Services, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2025 |
| 10167 | Finney Drilling Company | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 10168 | Finney Kyler A Dba Finney Oil Co | Wann, OK 74083 | Oil Operator | Jun 2025 |
| 10169 | Finney Oil Company | | Oil & Gas Operator | Jun 2025 |
| 10170 | Finston Arthur | Tulsa, OK 74105-7183 | Oil & Gas Operator | Mar 2007 |
| 10171 | Firebird Energy II LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2025 |
| 10172 | Firebird Energy LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2022 |
| 10173 | Firehouse Energy LLC | Morris, OK 74445 | Oil & Gas Operator | Mar 2024 |
| 10174 | Firerock Company | Abilene, TX 79602 | Oil & Gas Operator | Nov 2025 |
| 10175 | Fireside Oil And Gas, Inc. | West Monroe, LA 71294 | Oil & Gas Operator | Feb 2002 |
| 10176 | Firestone Tire & Rubber | Akron, OH 44317 | Oil & Gas Operator | Dec 1989 |
| 10177 | Firewater, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2011 |
| 10178 | Firewheel Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2017 |
| 10179 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 10180 | First Alliance CH | Erie, PA 16506-5024 | Gas Operator | Dec 2017 |
| 10181 | First Amer Energy Inc | Bradford, PA 16701-0184 | Oil & Gas Operator | Dec 2024 |
| 10182 | First American Operating Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2006 |
| 10183 | First Aransas Reserves, Inc. | Alvin, TX 77511 | Oil & Gas Operator | Mar 2018 |
| 10184 | First Ascent Operating LLC | Addison, TX 75001 | Oil Operator | Jun 2025 |
| 10185 | First Chinese Baptist Church | | Oil Operator | Dec 2006 |
| 10186 | First Energy Cor | | Oil Operator | Aug 1990 |
| 10187 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 10188 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 10189 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
| 10190 | First Liberty Energy Inc | Boca Raton, FL 33432-5942 | Oil & Gas Operator | Jul 2013 |
| 10191 | First Light Operating, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2025 |
| 10192 | First National Finance Corporation | | Oil Operator | Dec 1995 |
| 10193 | First National O | | Oil & Gas Operator | Aug 1990 |
| 10194 | First National Oil Inc | Edmond, OK 73003 | Oil & Gas Operator | Jul 2025 |
| 10195 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | Jul 2025 |
| 10196 | First Oil And Gas Company | | Oil Operator | Aug 2025 |
| 10197 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 10198 | First Reserve Oil & Gas Co | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 10199 | First Rock, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Nov 2025 |
| 10200 | First Solid Energy Group, LP | Missouri City, TX 77489 | Oil & Gas Operator | Nov 2025 |