| 1 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 2 | Abercrombie A L Inc | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 3 | Afg Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 4 | Allison J A | | Oil & Gas Operator | Nov 1995 |
| 5 | Allison Operating Co., L.C. | Wichita, KS 67202 | Oil & Gas Operator | Dec 1998 |
| 6 | American Warrior | | Oil & Gas Operator | Sep 2025 |
| 7 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Nov 2025 |
| 8 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 9 | Angle George A | | Gas Operator | Dec 1986 |
| 10 | Anr Production C | | Gas Operator | Apr 1994 |
| 11 | Apache Drilling Co | Kingman, KS 67068 | Oil Operator | Feb 2006 |
| 12 | Bach Oil Production | | Oil Operator | Sep 2025 |
| 13 | Barracuda Operating Company | Ness City, KS 67560 | Oil Operator | Sep 2025 |
| 14 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Sep 2025 |
| 15 | Bennett & Schult | | Oil Operator | Jul 1995 |
| 16 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 17 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 18 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 19 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 20 | Birmingham-Bartl | | Oil Operator | Aug 1994 |
| 21 | Black Stone Petroleum LLC | Wichita, KS 67206 | Oil Operator | Jul 2019 |
| 22 | Blackstone Oil & Gas (Kansas), LLC | Houston, TX 77002 | Gas Operator | Sep 2019 |
| 23 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 24 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 25 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 26 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 27 | Castle-Rock Prod | | Oil Operator | Mar 1992 |
| 28 | Catfish Minerals LLC | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 29 | Charter Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Sep 2025 |
| 30 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 31 | Cholla Production LLC | Littleton, CO 80127 | Oil & Gas Operator | Sep 2025 |
| 32 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Feb 2026 |
| 33 | Clover Oil Company | | Oil Operator | Sep 2025 |
| 34 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 35 | Col-Kan Developm | | Oil & Gas Operator | Jan 1995 |
| 36 | Columbian Servic | | Oil & Gas Operator | Nov 1993 |
| 37 | Conch Oil, Inc. | Wichita, KS 67202 | Oil Operator | Jun 2002 |
| 38 | Condor Energy | | Oil Operator | Aug 1995 |
| 39 | Condor Energy, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Oct 2021 |
| 40 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 41 | Cross Bar Petroleum, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Jun 2016 |
| 42 | CWB Oil Company, LLC | St. Francis, KS 67756 | Oil Operator | Sep 2025 |
| 43 | Damar Resc Incor | | Oil Operator | Oct 1995 |
| 44 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 45 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Dec 2025 |
| 46 | Double 'B' Oil I | | Oil Operator | Feb 1992 |
| 47 | Double G Petro LLC | | Oil Operator | Sep 2025 |
| 48 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 49 | Dreiling Oil Inc | Hays, KS 67601 | Oil Operator | Jun 2018 |
| 50 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 51 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 52 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 53 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 54 | Elysium Energy, L.L.C | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 55 | Empire Energy E & P, LLC | Mayville, NY 14757 | Oil & Gas Operator | Mar 2019 |
| 56 | Euram Petroleum | | Oil Operator | Apr 1986 |
| 57 | Evertson Oil Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Sep 2001 |
| 58 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 59 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 60 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 61 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 62 | Four-Way Oper In | | Oil Operator | Aug 1994 |
| 63 | Frontier Oil Com | | Oil & Gas Operator | May 1995 |
| 64 | G L M Company | | Oil Operator | Sep 2025 |
| 65 | Globe Operating, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 66 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 67 | H-40 Drilling, Inc. | Medicine Lodge, KS 67104 | Gas Operator | Sep 2025 |
| 68 | Habit Petroleum, LLC | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 69 | Halliburton Oil | | Oil & Gas Operator | Sep 2008 |
| 70 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 71 | Hays Oil Field S | | Oil Operator | Nov 1988 |
| 72 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 73 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |
| 74 | Isern, James R. | Wichita, KS 67277 | Oil Operator | Apr 1996 |
| 75 | J & D Investment Co. | | Oil & Gas Operator | Feb 2025 |
| 76 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 77 | Joe Gerstner Oil, LLC | Ness City, KS 67560 | Oil Operator | Sep 2025 |
| 78 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 79 | K N Processing | | Gas Operator | Mar 1999 |
| 80 | Kal Oil Operations | | Oil Operator | Jun 2025 |
| 81 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 82 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 83 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 84 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 85 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Sep 2025 |
| 86 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 87 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 88 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 89 | Lasmo Energy Cor | | Oil Operator | Feb 1990 |
| 90 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 91 | Leiker, Edward P. | Hays, KS 67601 | Oil Operator | Apr 1992 |
| 92 | Liboc, Inc. | New York, NY 10110 | Oil & Gas Operator | Dec 2009 |
| 93 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 94 | Mai Operations | | Oil Operator | Dec 1996 |
| 95 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 96 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 97 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |
| 98 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 99 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Dec 2025 |
| 100 | Mesa Petroleum C | | Oil & Gas Operator | Dec 1986 |