| 15801 | Konantz, Inc. | | Oil & Gas Operator | Jan 1995 |
| 15802 | Koonce Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 1993 |
| 15803 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 15804 | Kop-Mor Producti | | Oil Operator | Sep 1992 |
| 15805 | Kopco Inc | Caney, KS 67333 | Oil & Gas Operator | Oct 2025 |
| 15806 | Koram Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2006 |
| 15807 | Kore Energy LLC | | Oil & Gas Operator | Dec 2025 |
| 15808 | Korman Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2001 |
| 15809 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 15810 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | May 2026 |
| 15811 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 15812 | Kosarek, Charlie | San Antonio, TX 78213 | Oil & Gas Operator | Oct 2006 |
| 15813 | Kot, Inc. | Lost Springs, KS 66859 | Oil Operator | Aug 2016 |
| 15814 | Kotlowski, Keith | Alden, NY 14004 | Oil & Gas Operator | Dec 2024 |
| 15815 | Kottwitz Oil Co., A General Partnership | | Oil Operator | Jul 2019 |
| 15816 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | May 2026 |
| 15817 | Kouplen Steve | Beggs, OK 74421 | Oil & Gas Operator | Oct 2024 |
| 15818 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 15819 | Koven Production Co. | San Antonio, TX 78232 | Oil & Gas Operator | Aug 2003 |
| 15820 | Koyl Oil Inc | | Oil & Gas Operator | Feb 2026 |
| 15821 | Kozaczka, Loretta M. | Gowanda, NY 14070 | Gas Operator | Dec 2024 |
| 15822 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 15823 | KP Oil, LLC | | Oil & Gas Operator | Dec 2025 |
| 15824 | KPL Production Company LLC | Oklahoma City, OK 73112-4709 | Oil & Gas Operator | Feb 2017 |
| 15825 | Kracken Operating LLC | Lawrence, KS 66047 | Oil Operator | Dec 2019 |
| 15826 | Kraemer II LLC | | Oil & Gas Operator | Dec 2000 |
| 15827 | Kraft Oil Compan | | Oil Operator | Nov 1994 |
| 15828 | Kraft Oil Company LLC | Gridley, KS 66852 | Oil Operator | Dec 2025 |
| 15829 | Kraft, Jim - Oil Operations | Holyrood, KS 67450 | Oil Operator | Jan 1999 |
| 15830 | Kraken Development III, LLC | | Oil & Gas Operator | Nov 2021 |
| 15831 | Kraken Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 15832 | Kraker & Martin Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 15833 | Kraker Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 1995 |
| 15834 | Krakrow, Inc. | Spencer, WV 25276-1007 | Oil & Gas Operator | Dec 2021 |
| 15835 | Kram Energy | Corpus Christ, TX 78404 | Oil & Gas Operator | May 2026 |
| 15836 | Kramer Exploration Co. | Delaware, OH 43015 | Oil & Gas Operator | Dec 2009 |
| 15837 | Kramer Oil Field Service Inc | Wellsville, KS 66092 | Oil Operator | May 2019 |
| 15838 | Kramer Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 15839 | Kramer, Clifford A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 1997 |
| 15840 | Kramer, Frank & Ethel FLP | Graham, TX 76450 | Oil & Gas Operator | Sep 2014 |
| 15841 | Kramer, Frank C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 15842 | Kranz, Thomas | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 15843 | Kratos Operating, LLC | Hobbs, NM 88241 | Oil & Gas Operator | Dec 2025 |
| 15844 | Kratzer Oil LLC | | Oil Operator | Dec 2025 |
| 15845 | Krause, Michael J. & Tracy A. | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 15846 | KRB Enterprise, Inc. | | Oil Operator | Feb 2026 |
| 15847 | KRC Operating, LLC | Corpus Christ, TX 78412 | Oil & Gas Operator | Oct 2025 |
| 15848 | Krebbs, David B | | Oil & Gas Operator | Feb 2026 |
| 15849 | Krehbiel Oil Co. | McPherson, KS 67460 | Oil & Gas Operator | Oct 1998 |
| 15850 | Krehbiel Oil Com | | Oil & Gas Operator | Mar 1995 |
| 15851 | Krehbiel, Brian | Burrton, KS 67020 | Gas Operator | Mar 2025 |
| 15852 | Krehbiel, Jay | | Oil Operator | Dec 2025 |
| 15853 | Krejci Harry L | | Oil & Gas Operator | Jan 2026 |
| 15854 | Kremco Oil LLC | Wichita Falls, TX 76308 | Oil Operator | May 2026 |
| 15855 | Kremeier Prod & Operating | | Oil & Gas Operator | Jan 2010 |
| 15856 | Krenek Enterprises, Inc. | Lovelady, TX 75851 | Oil Operator | May 2026 |
| 15857 | Krescent Energy Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2013 |
| 15858 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | May 2026 |
| 15859 | Kriebel Acquisition Co LLC | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2025 |
| 15860 | Kriebel Gas Inc | Clarion, PA 16214-0765 | Oil & Gas Operator | Dec 1999 |
| 15861 | Kriebel Minerals Inc | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2020 |
| 15862 | Kriebel Natural Gas Co LLC | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2025 |
| 15863 | Krier Kirby Oil | | Oil Operator | Dec 1996 |
| 15864 | Krier Oil Oper - | | Oil Operator | Sep 1995 |
| 15865 | Krier Oil Operation | | Oil Operator | Nov 2025 |
| 15866 | Krier, Kirby Oil, Inc. | Claflin, KS 67525 | Oil Operator | Dec 2025 |
| 15867 | Kriken Oil & Gas | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jul 2005 |
| 15868 | Kriken Oil & Gas, Inc. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | May 2026 |
| 15869 | Krisco Oil Co. | Kermit, TX 79745 | Oil Operator | Jul 2022 |
| 15870 | Kristen Oil And Gas, Inc. | Edna, TX 77957 | Oil & Gas Operator | May 2026 |
| 15871 | Kriti Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2012 |
| 15872 | Kriti Te Energy, Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 2017 |
| 15873 | Krocan Energy Corporation | Bowling Green, KY 42102 | Oil & Gas Operator | May 2026 |
| 15874 | Krog Partners, LLC | Kilgore, TX 75663 | Oil Operator | May 2026 |
| 15875 | Krog, Peter L. & Kim R. | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 15876 | Kroh Operating LLC | Austin, TX 78746 | Oil & Gas Operator | May 2026 |
| 15877 | Kroll Energy LLC | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 15878 | Krot Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2026 |
| 15879 | Krotje, Dorothy C. | Franklinville, NY 14737 | Gas Operator | Dec 2024 |
| 15880 | Krotzer Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2026 |
| 15881 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 15882 | Kruckenberg & SC | | Oil & Gas Operator | Sep 1993 |
| 15883 | Kruckenberg & Scott | Isabel, KS 67065 | Oil Operator | Dec 2011 |
| 15884 | Krueger, A. H., Jr. | Hays, KS 67601 | Oil Operator | Jul 1993 |
| 15885 | Krug, Donald H | Russell, KS 67665 | Oil Operator | Dec 2025 |
| 15886 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Feb 2026 |
| 15887 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 15888 | Krummrich Engineering Corporation | | Oil & Gas Operator | Jan 2026 |
| 15889 | Ksabe Energy Partners, LLC | Oklahoma City, OK 73106 | Oil Operator | May 2026 |
| 15890 | KSC Oil | | Oil Operator | Nov 2025 |
| 15891 | KSM Energy Inc | Pittsburgh, PA 15238-3156 | Gas Operator | Dec 2024 |
| 15892 | KST Oil & Gas Co Inc | Tallmadge, OH 44278-1142 | Oil & Gas Operator | Dec 1995 |
| 15893 | Kstone Energy, LLC | Oklahoma City, OK 73106 | Oil Operator | May 2026 |
| 15894 | KSW Operating,LLC | | Oil & Gas Operator | Mar 2015 |
| 15895 | KT Energy Inc | Enid, OK 73702-2365 | Oil & Gas Operator | Jan 2026 |
| 15896 | KT Investments Inc | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2026 |
| 15897 | KT Operating Company LLC | Dallas, TX 75231 | Oil & Gas Operator | Feb 2010 |
| 15898 | KT Resources LLC | | Oil & Gas Operator | Jan 2026 |
| 15899 | KTC Oil Enterprises, LLC | Dallas, TX 75247 | Oil & Gas Operator | May 2026 |
| 15900 | KTM Operating LLC | | Oil & Gas Operator | Jan 2026 |