| 1 | L & A Energy LP | | Oil Operator | Dec 2025 |
| 2 | L & A Oil Compan | | Oil Operator | Sep 1991 |
| 3 | L & B Crude, Inc. | Yates Center, KS 66783 | Oil Operator | Nov 2019 |
| 4 | L & B Oil | Longton, KS 67352 | Oil Operator | Dec 2019 |
| 5 | L & D Operation | Victoria, KS 67671 | Oil Operator | Jun 1988 |
| 6 | L & F Oil Operat | | Oil Operator | Sep 1987 |
| 7 | L & G Energy | | Oil & Gas Operator | Mar 1994 |
| 8 | L & G Petroleum Operating, LLC | Havana, KS 67347 | Oil Operator | Dec 2025 |
| 9 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 10 | L & J Oil Co. | Borger, TX 79007 | Oil & Gas Operator | Apr 1999 |
| 11 | L & J Oil Proper | | Oil Operator | Dec 1996 |
| 12 | L & L Oil Compan | | Oil Operator | Oct 1984 |
| 13 | L & L Resources, Inc. | Hays, KS 67601 | Oil Operator | Mar 1986 |
| 14 | L & M Oil | | Oil Operator | Nov 2025 |
| 15 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |
| 16 | L & M Oil Compan | | Oil & Gas Operator | Dec 1986 |
| 17 | L & P Enterprises, LLC | Paola, KS 66071 | Oil Operator | Dec 2025 |
| 18 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 19 | L & R Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2025 |
| 20 | L And J Oil Comp | | Oil Operator | Dec 1996 |
| 21 | L B Industries Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2003 |
| 22 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 23 | L D O Incorporat | | Oil Operator | Jul 1988 |
| 24 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 25 | L V Gas Incorpor | | Oil & Gas Operator | Mar 1991 |
| 26 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | Dec 2025 |
| 27 | L&M, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Aug 2025 |
| 28 | L-K Wireline, Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 29 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 30 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2025 |
| 31 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Apr 2026 |
| 32 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | Dec 2025 |
| 33 | Lacen Oil | | Oil Operator | Jan 2002 |
| 34 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 35 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 36 | Lackey Disposal | | Oil Operator | Jul 1994 |
| 37 | Lackey Milton | | Oil & Gas Operator | Feb 1995 |
| 38 | Lackey, Donna | Waxahachie, TX 75165 | Oil Operator | Oct 2019 |
| 39 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 40 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 41 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Apr 2026 |
| 42 | Lamberd, Clayton | Olathe, KS 66061 | Oil Operator | Oct 2025 |
| 43 | Lancer Oil, Inc. | Piqua, KS 66761 | Oil Operator | May 2005 |
| 44 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 45 | Landes Explorati | | Oil Operator | Apr 1995 |
| 46 | Landes, P. Todd, Jr. | Magnolia, AR 71753 | Oil Operator | Apr 1988 |
| 47 | Landmark Oil & G | | Oil Operator | Nov 1987 |
| 48 | Landmark Oil Exp | | Oil Operator | Sep 1994 |
| 49 | Landmark Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 50 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 51 | Lang Herman Oil | | Oil & Gas Operator | Dec 1996 |
| 52 | Lang, Herman - Marital Trust | Garden City, KS 67846 | Oil & Gas Operator | Dec 2025 |
| 53 | Lang, Kenneth R. | Garden City, KS 67846 | Oil & Gas Operator | Dec 2025 |
| 54 | Langston Oil & Gas LLC | Wichita, KS 67202 | Oil Operator | Nov 2025 |
| 55 | Lansing Energy C | | Oil Operator | Jun 2006 |
| 56 | Lansing Energy Operations | Wichita, KS 67202 | Oil Operator | Apr 2010 |
| 57 | Larcom Mike | | Oil Operator | Feb 1987 |
| 58 | Lario Oil & Gas | | Oil & Gas Operator | Nov 1995 |
| 59 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Apr 2026 |
| 60 | Larrette Resources | | Oil Operator | Nov 1999 |
| 61 | Larson Buford | | Oil Operator | May 2006 |
| 62 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 63 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 64 | Lasmo Energy Cor | | Oil Operator | Feb 1990 |
| 65 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 66 | Lassetter Petrol | | Oil Operator | Oct 1986 |
| 67 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Dec 2025 |
| 68 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 69 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 70 | Law Production, Inc. | McPherson, KS 67460 | Oil Operator | Nov 2007 |
| 71 | Lawbanco Drillin | | Oil Operator | Feb 1995 |
| 72 | Lawbanco Drilling, Inc. | Natoma, KS 67651 | Oil Operator | May 1998 |
| 73 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Feb 2026 |
| 74 | Lawrence & Bush | Lawton, OK 73507 | Oil Operator | Dec 1995 |
| 75 | Lawrence & Bush, Inc. | Pampa, TX 79065 | Oil Operator | Oct 1998 |
| 76 | Lawrence Larry O | | Gas Operator | Sep 1993 |
| 77 | Lawrence, Max | Cambridge, KS 67023 | Oil Operator | Sep 2025 |
| 78 | Lawson Arthur C | | Oil Operator | Aug 1994 |
| 79 | Lawson Petroleum Co. | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2009 |
| 80 | Lawson, A.C., Inc. | Derby, KS 67037 | Oil Operator | Nov 2025 |
| 81 | Lawson, Thelma | Geuda Springs, KS 67051 | Oil Operator | Dec 2009 |
| 82 | Laymon Oil Compa | | Oil & Gas Operator | Dec 1996 |
| 83 | Laymon Oil Company | | Oil Operator | Feb 2001 |
| 84 | Laymon Oil II, LLC | Neosho Falls, KS 66758 | Oil Operator | Dec 2025 |
| 85 | Laymon, Michael | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 86 | Layne Energy Operating, LLC | Kansas City, KS 66106 | Oil & Gas Operator | Oct 2025 |
| 87 | Layton Glenn F J | | Oil Operator | Mar 1986 |
| 88 | Layton Oil Compa | | Oil & Gas Operator | Jul 1985 |
| 89 | Lazer Petroleum | | Oil Operator | Jan 1993 |
| 90 | LB Exploration, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Nov 2025 |
| 91 | LDH Operating LLC | Wichita, KS 67278 | Oil Operator | Dec 2025 |
| 92 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 93 | Leach, Elwood | Osawatomie, KS 66064 | Oil Operator | Dec 2009 |
| 94 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 95 | Leake, Keith D.(Deceased) Estate | Derby, KS 67037 | Oil Operator | Mar 2003 |
| 96 | Lear Petroleum E | | Oil & Gas Operator | Jan 1986 |
| 97 | Leasing & Development, Inc. | Wichita, KS 67202 | Oil Operator | Jun 2022 |
| 98 | Leavell Resource | | Oil Operator | Dec 1993 |
| 99 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 100 | Leben Corp. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2011 |