| 901 | Linn Mid-Continent Operating Inc | Houston, TX 77002-3018 | Oil & Gas Operator | Jun 2016 |
| 902 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 903 | Linn Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 904 | Linn Opr Inc | Indiana, PA 15701-8914 | Oil & Gas Operator | Dec 2007 |
| 905 | Linn Opr LLC | Indiana, PA 15701-8914 | Gas Operator | Dec 2004 |
| 906 | Linn Western Operating Inc. | | Oil & Gas Operator | Jan 2018 |
| 907 | Linop Corporation | Austin, TX 78728 | Oil & Gas Operator | Feb 2026 |
| 908 | Linville Natural Gas Co. Inc. | | Gas Operator | Sep 2000 |
| 909 | Lio-1 Corporation | Las Vegas, NV 89116 | Oil Operator | Sep 2025 |
| 910 | Lion Energy Co LLC | Wexford, PA 15090-6315 | Oil & Gas Operator | Dec 2014 |
| 911 | Lion Oil & Gas Company LLC | | Oil & Gas Operator | Dec 1993 |
| 912 | Lion Oil Company | Chanute, KS 66720 | Oil Operator | Dec 1986 |
| 913 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 914 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 915 | Lionel R Levinson | Albuquerque, NM 87102 | Gas Operator | Jul 1997 |
| 916 | Lionheart Energy Corporation | Durango, CO 81301 | Oil & Gas Operator | Feb 2026 |
| 917 | Lions Den Operating LLC | Kilgore, TX 75663 | Gas Operator | Feb 2026 |
| 918 | Lipan Flats Production, L.L.C. | San Angelo, TX 76905 | Oil Operator | Feb 2026 |
| 919 | Lippizan Petroleum, Inc. | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2024 |
| 920 | Lipps, Alfred J. | Burnsville, WV 26355-0000 | Oil & Gas Operator | Sep 2017 |
| 921 | Liquid Petroleum Resources, Inc. | Amarillo, TX 79120 | Gas Operator | Feb 2026 |
| 922 | Lischer, Michael J. | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 923 | Lishberg Petroleum Inc | Jerusaleum, OH 43747 | Oil & Gas Operator | Dec 2024 |
| 924 | Lissie Corporation | San Antonio, TX 78209 | Oil & Gas Operator | Jan 1998 |
| 925 | Lissner, Lindy | Jourdanton, TX 78026 | Oil & Gas Operator | Feb 2026 |
| 926 | Lissolo J W | Yuma, AZ 85365 | Oil & Gas Operator | Feb 2017 |
| 927 | Lissolo Timothy C | Newcastle, WY 82701 | Oil Operator | Jan 2026 |
| 928 | Liston V Dean | Nowata, OK 74048-5200 | Oil & Gas Operator | Nov 2016 |
| 929 | Litan, David | Wichita, KS 67218 | Oil Operator | Jun 1990 |
| 930 | Litchfield Production Co. | Nederland, TX 77627 | Oil & Gas Operator | Feb 2026 |
| 931 | Lithos Exploration Inc | | Oil & Gas Operator | Nov 2014 |
| 932 | Litsey Exploration LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Nov 2025 |
| 933 | Little & Whyte Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2008 |
| 934 | Little Bear Oil & Gas Co LTD | Boca Rotan, FL 33431 | Oil & Gas Operator | Jan 1997 |
| 935 | Little Bear Resources LLC | Stillwater, OK 74074-1388 | Oil & Gas Operator | Feb 2013 |
| 936 | Little Chicago Oil & Gas Inc | Edmond, OK 73034-0809 | Oil & Gas Operator | Dec 2017 |
| 937 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Nov 2025 |
| 938 | Little Creek Properties Inc. | | Oil Operator | Nov 2025 |
| 939 | Little Cypress Oil & Gas, L.L.C. | Fullerton, CA 92834 | Oil Operator | Feb 2026 |
| 940 | Little Drop Oil Company | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 941 | Little Guy Oil & Gas, Inc. | Pratt, KS 67124 | Oil Operator | Aug 2013 |
| 942 | Little H L | Bristow, OK 74010 | Gas Operator | Sep 1994 |
| 943 | Little Iowa LLC | Sinclairville, NY 14782 | Gas Operator | Dec 2024 |
| 944 | Little Jewel LLC | | Oil & Gas Operator | Nov 2025 |
| 945 | Little Joe'S Oil Company | | Oil Operator | Jul 2020 |
| 946 | Little Man Gas, LLC | Pikeville, KY 41501 | Gas Operator | Dec 2021 |
| 947 | Little Neil Oil | | Oil Operator | Jul 1994 |
| 948 | Little O Oil Company | Velma, OK 73091-0425 | Oil & Gas Operator | Apr 2015 |
| 949 | Little Oil & Gas | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 950 | Little Oil And Gas, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 951 | Little Oil Company LLC | Cushing, OK 74023 | Oil Operator | Nov 2025 |
| 952 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Dec 2025 |
| 953 | Little Thunder, LLC | Bartlesville, OK 74003 | Oil Operator | Nov 2025 |
| 954 | Little, Jay R. | Limestone, NY 14753 | Oil & Gas Operator | Dec 2024 |
| 955 | Little, Lou Operating Co., Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2014 |
| 956 | Little, Quintin Company,Inc.,The | Ardmore, OK 73402 | Oil & Gas Operator | Feb 2026 |
| 957 | Littlefield Oil & Gas Company | | Oil & Gas Operator | Jan 1990 |
| 958 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 959 | Littrell Chemical Inc | Cleo Springs, OK 73729 | Oil & Gas Operator | Jan 2005 |
| 960 | Litzenberger Exploration | Waynoka, OK 73860 | Oil & Gas Operator | Jul 1996 |
| 961 | Litzenberger Exploration Inc | Waynoka, OK 73860 | Oil & Gas Operator | Dec 2025 |
| 962 | Live Oak Energy, Inc. | | Oil & Gas Operator | Dec 2011 |
| 963 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Feb 2026 |
| 964 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 965 | Live Oak Petroleum, Inc. | Dallas, TX 75251 | Gas Operator | Mar 2001 |
| 966 | Live Oak Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 967 | Live Oak/Operations, Inc. | Houston, TX 77019 | Gas Operator | Jul 2011 |
| 968 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 969 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Feb 2026 |
| 970 | Lively Resources, Inc. | Houston, TX 77056 | Gas Operator | Dec 1998 |
| 971 | Livingston, David Oil Company | Haskell, TX 79521 | Oil & Gas Operator | Aug 2003 |
| 972 | Livingston, F. L. | Megargel, TX 76370 | Oil & Gas Operator | May 2018 |
| 973 | Lizard Lick Transport, LLC | Grandfalls, TX 79742 | Oil & Gas Operator | Feb 2026 |
| 974 | Lizard Oil & Gas, LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Feb 2017 |
| 975 | LKD Corp. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2018 |
| 976 | LKKTX 2018, LLC | Wichita Falls, TX 76305 | Oil Operator | Feb 2026 |
| 977 | LKM Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2024 |
| 978 | LKM Oil And Gas LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 979 | Lko Operating LLC | | Oil & Gas Operator | Feb 2017 |
| 980 | LL&N Oil & Gas Co., Inc. | | Oil Operator | Sep 1982 |
| 981 | Llano Land & Exploration Co | Roswell, NM 88202 | Oil & Gas Operator | Sep 2004 |
| 982 | Llano Management Company, Inc. | El Campo, TX 77437 | Gas Operator | Oct 2001 |
| 983 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 984 | Llewellin Operating Company, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2017 |
| 985 | LLJ Ventures, LLC Dba Marker Oil & Gas | Roswell, NM 88202 | Oil & Gas Operator | Apr 2022 |
| 986 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 987 | Llog Expl. Co.-Biggs | | Oil Operator | Sep 1985 |
| 988 | Llog Exploration & Prod Co | | Oil & Gas Operator | Jul 2000 |
| 989 | Llog Exploration Company, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 990 | Llog Exploration Offshore, Inc. | Covington, LA 70433 | Oil & Gas Operator | Aug 2004 |
| 991 | Llog Exploration Texas, L.P. | Covington, LA 70433 | Oil & Gas Operator | Feb 2026 |
| 992 | Llog Production Company | Metairie, LA 70005 | Oil & Gas Operator | Nov 2025 |
| 993 | Llosu Corporation | Rawlins, WY 82301 | Oil & Gas Operator | Mar 2002 |
| 994 | Llox, L.L.C. | Covington, LA 70433 | Oil & Gas Operator | Feb 2026 |
| 995 | Lloyd Drilling C | | Oil Operator | Aug 1995 |
| 996 | Lloyd Drilling Company | Morland, KS 67650 | Oil Operator | Oct 2009 |
| 997 | Lloyd E. Hargrove | | Oil & Gas Operator | Aug 1998 |
| 998 | Lloyd H. Smith | | Oil & Gas Operator | Mar 1972 |
| 999 | Lloyd M McKenzie | | Oil Operator | Mar 2001 |
| 1000 | Lloyd Pool Operating, LLC | Sandia Park, NM 87047 | Gas Operator | Dec 2015 |