| 801 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 802 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Sep 2025 |
| 803 | Knight Resources LLC | | Oil & Gas Operator | Dec 2013 |
| 804 | Knight Resources, Inc. | | Oil & Gas Operator | Dec 2011 |
| 805 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 806 | Knight, Michael L. | Ripley, NY 14775 | Gas Operator | Dec 2024 |
| 807 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2026 |
| 808 | Knight, Wilbur H. Et Al | | Oil & Gas Operator | Jul 1991 |
| 809 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 810 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 811 | Knightsbridge Petroleum Corp. | | Oil Operator | Jul 1991 |
| 812 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 813 | Knobler, Alfred E | | Oil & Gas Operator | Dec 2003 |
| 814 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 815 | Knotts Brothers | Orma, WV 25268-0000 | Oil & Gas Operator | Dec 2021 |
| 816 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 817 | Knox Industries, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Feb 2026 |
| 818 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 819 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 820 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 821 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Nov 2025 |
| 822 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Feb 2026 |
| 823 | Ko Operating LLC | Austin, TX 78746 | Oil Operator | Feb 2026 |
| 824 | Kobar Corporation | Riverton, WY 82501 | Gas Operator | Dec 1996 |
| 825 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 826 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 827 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 828 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 829 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 830 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 831 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 832 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 833 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 834 | Koch Production Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2002 |
| 835 | Koch, P. S. | Seguin, TX 78155 | Oil & Gas Operator | May 2018 |
| 836 | Koda GNB, LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 837 | Koda Operating LLC | Tyler, TX 75703-5596 | Oil & Gas Operator | Nov 2025 |
| 838 | Koda Resources Operating, LLC | | Oil & Gas Operator | Dec 2025 |
| 839 | Koda Uinta, LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 840 | Kodiak Drilling, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 841 | Kodiak Energy LLC | Pineville, MO 64856 | Oil Operator | Dec 2019 |
| 842 | Kodiak Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
| 843 | Kodiak Oil & Gas Exploration Inc | Oklahoma City, OK 73134-1046 | Oil & Gas Operator | Oct 2025 |
| 844 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Feb 2026 |
| 845 | Kodiak Oil Co. | Stockton, MO 65785 | Oil Operator | May 1996 |
| 846 | Kodiak Operating, L.L.C. | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 847 | Kodiak Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 1996 |
| 848 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Sep 2025 |
| 849 | Kodiak Productions LTD | Big Lake, TX 76932 | Oil & Gas Operator | Mar 2014 |
| 850 | Kody Petroleum Co., Inc. | Daisetta, TX 77533 | Oil & Gas Operator | Feb 2026 |
| 851 | Koebley Timothy W | Warren, PA 16365-2102 | Oil & Gas Operator | Dec 2025 |
| 852 | Koehler Rose Dba R & H Production | Cement, OK 73017 | Oil & Gas Operator | Oct 2021 |
| 853 | Koehn Alfred D | | Oil & Gas Operator | Sep 1994 |
| 854 | Koehn Eldon R | | Oil Operator | Dec 2009 |
| 855 | Koehn Radell W | | Oil Operator | Dec 2009 |
| 856 | Koehn, Alfred D.(Deceased) | Galva, KS 67443 | Oil Operator | Mar 1998 |
| 857 | Koehn, Carolyn | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 858 | Koehn, John W. | Sublette, KS 67877 | Gas Operator | May 2018 |
| 859 | Koehn, Max R. | Copeland, KS 67837 | Oil & Gas Operator | Oct 2019 |
| 860 | Koehn, Radell W. And Austin Koehn & Morgan Koehn | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 861 | Koehn, Roger D. | Galva, KS 67443 | Oil Operator | Apr 1998 |
| 862 | Koelsch Rex Or Marie | Tulsa, OK 74107-8647 | Oil & Gas Operator | Jul 2024 |
| 863 | Kohler Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 864 | Kohler Industrial Nat. Gas, Inc. | Kohler, WI 53044 | Gas Operator | Dec 2000 |
| 865 | Kojo Energy, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2026 |
| 866 | Koko Skadi, LLC | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 867 | Kokomo Energy, Inc. | Gorman, TX 76454 | Oil & Gas Operator | Feb 2026 |
| 868 | Kokomo Oil Company | Houston, TX 77227 | Oil & Gas Operator | Apr 1998 |
| 869 | Kolar Petroleum Inc | Oklahoma City, OK 73162-1509 | Oil & Gas Operator | Jun 2007 |
| 870 | Kolb, James | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2003 |
| 871 | Kolibri Energy Us, Inc. | Thousand Oaks, CA 91320-1272 | Oil & Gas Operator | Nov 2025 |
| 872 | Kollao Properties LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 873 | Kolodczak, Debra | North Collins, NY 14111 | Gas Operator | Dec 2024 |
| 874 | Konantz, Inc. | | Oil & Gas Operator | Jan 1995 |
| 875 | Konantz, Ronald J. Inc. | Houma, LA 70360 | Oil & Gas Operator | Feb 2026 |
| 876 | Koonce Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 1993 |
| 877 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 878 | Kop-Mor Producti | | Oil Operator | Sep 1992 |
| 879 | Kopco Inc | Caney, KS 67333 | Oil & Gas Operator | Oct 2025 |
| 880 | Koram Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2006 |
| 881 | Kore Energy LLC | | Oil & Gas Operator | Nov 2025 |
| 882 | Korman Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2001 |
| 883 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 884 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | Feb 2026 |
| 885 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 886 | Kosarek, Charlie | San Antonio, TX 78213 | Oil & Gas Operator | Oct 2006 |
| 887 | Kot, Inc. | Lost Springs, KS 66859 | Oil Operator | Aug 2016 |
| 888 | Kotlowski, Keith | Alden, NY 14004 | Oil & Gas Operator | Dec 2024 |
| 889 | Kottwitz Oil Co., A General Partnership | | Oil Operator | Jul 2019 |
| 890 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 891 | Kouplen Steve | Beggs, OK 74421 | Oil & Gas Operator | Oct 2024 |
| 892 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 893 | Koven Production Co. | San Antonio, TX 78232 | Oil & Gas Operator | Aug 2003 |
| 894 | Koyl Oil Inc | | Oil & Gas Operator | Jan 2026 |
| 895 | Kozaczka, Loretta M. | Gowanda, NY 14070 | Gas Operator | Dec 2024 |
| 896 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 897 | KP Oil, LLC | | Oil & Gas Operator | Sep 2025 |
| 898 | KPL Production Company LLC | Oklahoma City, OK 73112-4709 | Oil & Gas Operator | Feb 2017 |
| 899 | KPM Productions Inc. | | Oil & Gas Operator | Dec 1998 |
| 900 | KPR Incorporated | | Oil & Gas Operator | Nov 1988 |