| 16201 | KJ Energy, LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2024 |
| 16202 | KJ Energy, LLC Of Delaware | | Oil & Gas Operator | Nov 2016 |
| 16203 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Oct 2025 |
| 16204 | Kjellin, Charles Willard (Deceased) | Marion, KS 66861 | Oil & Gas Operator | Oct 2013 |
| 16205 | KJR Services LLC | Edmond, OK 73083 | Oil & Gas Operator | Oct 2025 |
| 16206 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 16207 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 16208 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 16209 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 16210 | Klaeger Operating Company II,LLC | Marble Falls, TX 78654 | Oil Operator | Dec 2025 |
| 16211 | Klaeger Operating Company, LLC | Marble Falls, TX 78654 | Oil Operator | Dec 2025 |
| 16212 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 16213 | Klassen Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 16214 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 16215 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 16216 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Nov 2025 |
| 16217 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2021 |
| 16218 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 16219 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Oct 2025 |
| 16220 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2024 |
| 16221 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2024 |
| 16222 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 16223 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 16224 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 16225 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 16226 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 16227 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 16228 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2024 |
| 16229 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 16230 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 16231 | Klingensmith Fred T Etal | Sapulpa, OK 74066 | Oil & Gas Operator | Nov 2007 |
| 16232 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2019 |
| 16233 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Nov 2025 |
| 16234 | Klingler Automatic Industries Inc | | Oil & Gas Operator | Oct 2025 |
| 16235 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 16236 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 16237 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 16238 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 16239 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 16240 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 16241 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 16242 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Sep 2025 |
| 16243 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Nov 2025 |
| 16244 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 16245 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 16246 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 16247 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 16248 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 16249 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2025 |
| 16250 | Klug, E A & A J (Estate) | Proctor, WV 26055-0000 | Oil & Gas Operator | Dec 2021 |
| 16251 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 16252 | KMD Operating Company LLC | | Oil & Gas Operator | Dec 2015 |
| 16253 | Kmfad Oil And Gas LLC | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2023 |
| 16254 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 16255 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Dec 2025 |
| 16256 | KMP Operating Inc. | | Oil Operator | Nov 2025 |
| 16257 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 16258 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 16259 | Knaup, Harry J. & Lucille | Shelby, MT 59474 | Oil Operator | Oct 2023 |
| 16260 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 16261 | Kneer, Donna | Portland, NY 14769 | Gas Operator | Dec 2024 |
| 16262 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Dec 2025 |
| 16263 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 16264 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 16265 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 16266 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |
| 16267 | Knight Casing Pulling Company | | Oil Operator | Jun 1989 |
| 16268 | Knight Energy Inc | Tulsa, OK 74104 | Oil Operator | Oct 2025 |
| 16269 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 16270 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Sep 2025 |
| 16271 | Knight Resources LLC | | Oil & Gas Operator | Dec 2013 |
| 16272 | Knight Resources, Inc. | | Oil & Gas Operator | Dec 2011 |
| 16273 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 16274 | Knight, Michael L. | Ripley, NY 14775 | Gas Operator | Dec 2024 |
| 16275 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2025 |
| 16276 | Knight, Wilbur H. Et Al | | Oil & Gas Operator | Jul 1991 |
| 16277 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 16278 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 16279 | Knightsbridge Petroleum Corp. | | Oil Operator | Jul 1991 |
| 16280 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 16281 | Knobler, Alfred E | | Oil & Gas Operator | Dec 2003 |
| 16282 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 16283 | Knotts Brothers | Orma, WV 25268-0000 | Oil & Gas Operator | Dec 2021 |
| 16284 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 16285 | Knox Industries, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Dec 2025 |
| 16286 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 16287 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 16288 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 16289 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Nov 2025 |
| 16290 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Dec 2025 |
| 16291 | Ko Operating LLC | Austin, TX 78746 | Oil Operator | Dec 2025 |
| 16292 | Kobar Corporation | Riverton, WY 82501 | Gas Operator | Dec 1996 |
| 16293 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 16294 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 16295 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 16296 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 16297 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 16298 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 16299 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 16300 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |