| 1 | 3G Production, LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 2 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2025 |
| 3 | Allison Dean Oil | | Oil & Gas Operator | Nov 1994 |
| 4 | Alpine Drilling | | Oil & Gas Operator | May 1994 |
| 5 | American Warrior | | Oil & Gas Operator | Sep 2025 |
| 6 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Oct 2025 |
| 7 | American Warrior, In | | Oil & Gas Operator | Sep 2024 |
| 8 | Anderson, Jerry | Floydada, TX 79235 | Oil & Gas Operator | Dec 2019 |
| 9 | Apollo Energies | Pratt, KS 67124 | Oil Operator | Aug 2016 |
| 10 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 11 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | Dec 2025 |
| 12 | Armstrong & Jack | | Gas Operator | Jun 1997 |
| 13 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 14 | B & B Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Sep 2025 |
| 15 | Bankoff Oil Company | Tulsa, OK 74170 | Oil Operator | Sep 2003 |
| 16 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Sep 2025 |
| 17 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Oct 2025 |
| 18 | Belport Oil Inc | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2025 |
| 19 | Benson Mineral G | | Oil & Gas Operator | Dec 1995 |
| 20 | Benson Mineral Group, Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 21 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 22 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 23 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 24 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 25 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |
| 26 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 27 | Breitenbach Family Farms LLC | Bonner Springs, KS 66012 | Oil & Gas Operator | May 2020 |
| 28 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 29 | Brunson Producti | | Oil & Gas Operator | Aug 1993 |
| 30 | Bta Operating | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 31 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 32 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 33 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 34 | Castelli Exploration Inc | Oklahoma City, OK 73162 | Oil & Gas Operator | Oct 2025 |
| 35 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Nov 2025 |
| 36 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 37 | Cinco Exploratio | | Oil & Gas Operator | Jan 1988 |
| 38 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 39 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 40 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 41 | Coats Energy, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Sep 2025 |
| 42 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 43 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 44 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 45 | D S & W Well Servicing, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 46 | D. R. Lauck Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2019 |
| 47 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 48 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 49 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 50 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Sep 2025 |
| 51 | Deutsch Oil Company | | Oil & Gas Operator | Sep 2025 |
| 52 | Drop Tine Exploration, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2019 |
| 53 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 54 | Edwards Oil Inco | | Oil Operator | Oct 1984 |
| 55 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 56 | Emerson, Jim | Plano, TX 75074 | Oil & Gas Operator | Jan 1995 |
| 57 | Energy Reserves | | Oil & Gas Operator | Oct 1993 |
| 58 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 59 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 60 | Farrar Pump & Supply Co., Inc. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2009 |
| 61 | Getty Oil Compan | | Oil & Gas Operator | Jun 1992 |
| 62 | Great Eastern En | | Oil & Gas Operator | Nov 1995 |
| 63 | Great Eastern Energy & Dev. Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 64 | Griffin, Charles N. | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 65 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |
| 66 | Halliburton Oil | | Oil & Gas Operator | Sep 2008 |
| 67 | Harper Oil And Gas, LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 68 | Herman L. Loeb LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Sep 2025 |
| 69 | Herndon Drilling | | Oil & Gas Operator | May 1988 |
| 70 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 71 | Hummon Corp | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2023 |
| 72 | Imperial Oil & G | | Gas Operator | Jan 1990 |
| 73 | Imperial Oil And Gas, Inc. | Wichita, KS 67202 | Gas Operator | Jun 2002 |
| 74 | Imperial Oil Com | | Oil & Gas Operator | Dec 1992 |
| 75 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 76 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 77 | Iuka-Carmi Development LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 78 | J & D Investment Co. | | Oil & Gas Operator | Feb 2025 |
| 79 | J D Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2005 |
| 80 | Jad Petroleum Corporation | Colorado Springs, CO 80906 | Oil & Gas Operator | Aug 1998 |
| 81 | Jade Petroleum C | | Oil & Gas Operator | Mar 1985 |
| 82 | Jason Oil Compan | | Oil Operator | Sep 1992 |
| 83 | JRC Productions, LLC | Pittsburg, KS 66762 | Gas Operator | Oct 2008 |
| 84 | K Explorations | | Gas Operator | May 1984 |
| 85 | Kenworthy Operating Company | Tulsa, OK 74132 | Oil & Gas Operator | May 2009 |
| 86 | Key Gas Corp. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2018 |
| 87 | Kirkman W L Inco | | Oil & Gas Operator | Dec 1994 |
| 88 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 89 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 90 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Sep 2025 |
| 91 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 92 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 93 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Sep 2025 |
| 94 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 95 | Leben Drilling I | | Oil & Gas Operator | Dec 1988 |
| 96 | Lebsack Oil Prod | | Oil & Gas Operator | Nov 1995 |
| 97 | Little Guy Oil & Gas, Inc. | Pratt, KS 67124 | Oil Operator | Aug 2013 |
| 98 | Mad Operators LLC | | Oil & Gas Operator | Sep 2025 |
| 99 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Nov 2025 |
| 100 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |