| 1 | 3G Production, LLC | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 2 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 3 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Dec 2025 |
| 4 | Addis, Icer Estate Of | Wichita, KS 67208 | Gas Operator | Jun 2015 |
| 5 | Alexander Howard | Tulsa, OK 74114 | Oil & Gas Operator | Feb 1996 |
| 6 | Alliance Energy LLC | Hutchinson, KS 67501 | Oil & Gas Operator | Dec 2025 |
| 7 | American Energie | | Oil & Gas Operator | May 1995 |
| 8 | American Energies Pipeline, LLC | Dallas, TX 75207 | Oil & Gas Operator | Jan 2015 |
| 9 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Jan 2026 |
| 10 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 11 | Associated Petroleum Consultants, Inc. | Wichita, KS 67202 | Gas Operator | Dec 2013 |
| 12 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 13 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 14 | B5 Operating, LLC | Wellington, KS 67152 | Oil & Gas Operator | Dec 2025 |
| 15 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2026 |
| 16 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2026 |
| 17 | Bear Petroleum | | Oil & Gas Operator | Dec 1996 |
| 18 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Dec 2025 |
| 19 | Benchmark Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 20 | Beredco Incorpor | | Oil & Gas Operator | Dec 1993 |
| 21 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 22 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 23 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 24 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 25 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 26 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 27 | Bison Energy Cor | | Oil & Gas Operator | Aug 1995 |
| 28 | Bison Energy Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2022 |
| 29 | Bluff Creek Ridge, Inc. | Anthony, KS 67003 | Oil & Gas Operator | Dec 2025 |
| 30 | Bowers Drilling | | Oil & Gas Operator | Jul 1995 |
| 31 | Boyer Jay C | | Oil Operator | Feb 1994 |
| 32 | Bramwell Petrole | | Oil & Gas Operator | Dec 1995 |
| 33 | Bramwell Petroleum, Inc. | Zenda, KS 67159 | Oil & Gas Operator | Dec 2025 |
| 34 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 35 | Bristol Resource | | Oil & Gas Operator | Jan 1995 |
| 36 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 37 | Brown, William F. | Cheney, KS 67025 | Oil & Gas Operator | Dec 2025 |
| 38 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 39 | C & C Oil & Gas | Ranger, TX 76470 | Oil & Gas Operator | Apr 2026 |
| 40 | C & K Operating LLC | Kingman, KS 67068 | Oil & Gas Operator | Dec 2025 |
| 41 | Campbell Robert | | Oil & Gas Operator | Aug 1990 |
| 42 | Campbell, Robert E. | Wichita, KS 67206 | Oil & Gas Operator | May 2019 |
| 43 | Carstan Petroleu | | Oil Operator | May 1983 |
| 44 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Dec 2025 |
| 45 | Chapman Energy O | | Oil & Gas Operator | Jun 1993 |
| 46 | Chapman Energy Oklahoma Inc | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 47 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2026 |
| 48 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 49 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 50 | Circle K Enterprises | | Oil & Gas Operator | Aug 2023 |
| 51 | Citation Oil & G | | Oil & Gas Operator | Dec 1996 |
| 52 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Apr 2026 |
| 53 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 54 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 55 | Columbian Servic | | Oil & Gas Operator | Nov 1993 |
| 56 | Columbian Services Corporation | Topeka, KS 66603 | Gas Operator | Dec 2009 |
| 57 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 58 | Conoco Incorpora | | Oil & Gas Operator | Apr 1988 |
| 59 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 60 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Dec 2025 |
| 61 | Culver & Grounds | | Oil & Gas Operator | Nov 1995 |
| 62 | D. R. Lauck Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2019 |
| 63 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Dec 2025 |
| 64 | Delaware Dyche Corp. | Hutchinson, KS 67501 | Oil Operator | Jan 2010 |
| 65 | Destiny Services LLC | Pratt, KS 67124 | Oil & Gas Operator | Jan 2024 |
| 66 | Deutsch Oil Comp | | Oil & Gas Operator | Oct 1994 |
| 67 | Dixon Energy, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Sep 2023 |
| 68 | Dixon Operating Company, LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 69 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 70 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 71 | Drop Tine Exploration, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2019 |
| 72 | Dunne-Gardner Petroleum, Inc. | Wichita, KS 67202 | Gas Operator | Jun 2022 |
| 73 | Dutton Bill J Oi | | Oil & Gas Operator | Oct 1992 |
| 74 | Eagle Creek Corporation | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 75 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Dec 2025 |
| 76 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 77 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 78 | Elm III Operating Company LLC | Edmond, OK 73013 | Oil & Gas Operator | Dec 2025 |
| 79 | End Of The Trails Re | | Oil Operator | Dec 2025 |
| 80 | Energy Marketing | | Oil & Gas Operator | May 1995 |
| 81 | Energy Marketing, Inc. | Omaha, NE 68102 | Oil & Gas Operator | Jul 2005 |
| 82 | Energy Productio | | Oil & Gas Operator | Jan 1986 |
| 83 | Energy Reserves | | Oil & Gas Operator | Oct 1993 |
| 84 | Energy Reserves Group, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2002 |
| 85 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 86 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Apr 2026 |
| 87 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 88 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 89 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Dec 2025 |
| 90 | Gas Producing En | | Oil & Gas Operator | Nov 1983 |
| 91 | Gemini Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 92 | General Atlantic | | Gas Operator | Jan 1970 |
| 93 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 94 | Giles, Benjamin M. | Towanda, KS 67144 | Oil & Gas Operator | Oct 2016 |
| 95 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 96 | Gra Ex, LLC | Kingman, KS 67068 | Oil & Gas Operator | Nov 2025 |
| 97 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 98 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Jan 2026 |
| 99 | Graves Drilling | | Oil & Gas Operator | Sep 1995 |
| 100 | H3 Oil & Gas | | Oil & Gas Operator | Dec 2025 |