| 1 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2025 |
| 2 | Agricultural Energy Services | Edmond, OK 73003 | Oil & Gas Operator | Sep 2025 |
| 3 | Amarex Incorpora | | Oil Operator | Feb 1985 |
| 4 | American Warrior | | Oil & Gas Operator | Sep 2025 |
| 5 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Nov 2025 |
| 6 | Amoco Production | | Oil & Gas Operator | Jun 2012 |
| 7 | Amoco Production Company | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 8 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 9 | Anadarko Petrole | | Oil & Gas Operator | Dec 1996 |
| 10 | Anadarko Petroleum | | Oil & Gas Operator | Oct 2007 |
| 11 | Anadarko Petroleum Co | Houston, TX 77227 | Oil & Gas Operator | Feb 1998 |
| 12 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Dec 2025 |
| 13 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 14 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Nov 2025 |
| 15 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 16 | Bellnorth Petrol | | Oil Operator | Aug 1986 |
| 17 | Bengalia Land And Cattle Company | Tulsa, OK 74152 | Oil & Gas Operator | Aug 2025 |
| 18 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 19 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 20 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 21 | Border-Line Inco | | Oil Operator | Nov 1989 |
| 22 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |
| 23 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2025 |
| 24 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 25 | C & R Petroleum Company | Duncan, OK 73533-1341 | Oil & Gas Operator | Oct 2025 |
| 26 | Casillas Petroleum Corp | Satanta, KS 67870 | Oil & Gas Operator | Dec 2025 |
| 27 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Jan 2026 |
| 28 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Feb 2026 |
| 29 | Chapman Explorat | | Oil Operator | Feb 1988 |
| 30 | Cheaspeake Energy Ma | | Gas Operator | Jul 2005 |
| 31 | Chesapeake Energy | | Oil & Gas Operator | Dec 2009 |
| 32 | Chesapeake Energy Ma | | Gas Operator | Jun 2016 |
| 33 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2026 |
| 34 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2025 |
| 35 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 36 | Cisco Operating LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 37 | City Of Satanta | Satanta, KS 67870 | Gas Operator | Sep 2025 |
| 38 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 39 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 40 | Continental Energy | Garden City, KS 67846-0918 | Oil & Gas Operator | Jul 2017 |
| 41 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 42 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Jan 2026 |
| 43 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Feb 2026 |
| 44 | Devon Energy Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 45 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 46 | Dunne Equities Operating, Inc. | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 47 | Dunne Equities, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2014 |
| 48 | Eads Operating C | | Oil Operator | Jun 1990 |
| 49 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 50 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 51 | Elm III Operating Company LLC | Edmond, OK 73013 | Oil & Gas Operator | Sep 2025 |
| 52 | Energy Sources I | | Oil & Gas Operator | Jul 1986 |
| 53 | Enron Corporatio | | Oil & Gas Operator | Aug 1999 |
| 54 | Ensign Operating | | Oil & Gas Operator | Oct 1994 |
| 55 | Ensz, Jerry | Sublette, KS 67877 | Gas Operator | Sep 2025 |
| 56 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 57 | Extreme Energy Co | | Oil & Gas Operator | Sep 2025 |
| 58 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Feb 2026 |
| 59 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Sep 2025 |
| 60 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 61 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 62 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 63 | Global Natural R | | Oil & Gas Operator | Oct 1990 |
| 64 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 65 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 66 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Sep 2025 |
| 67 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 68 | Harper Oil And Gas, LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 69 | Harris Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 70 | Harris Oil & Gas Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2016 |
| 71 | Hayden Operating | | Oil & Gas Operator | Sep 2025 |
| 72 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |
| 73 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2025 |
| 74 | Herman L. Loeb LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Sep 2025 |
| 75 | HJ, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 76 | Hugoton Energy C | | Oil & Gas Operator | Feb 2004 |
| 77 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 78 | Jedona Energy, LLC | | Oil Operator | Apr 2004 |
| 79 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 80 | Kansas Natural G | | Oil & Gas Operator | Dec 1996 |
| 81 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Sep 2025 |
| 82 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Sep 2025 |
| 83 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 84 | Koehn, John W. | Sublette, KS 67877 | Gas Operator | May 2018 |
| 85 | Koehn, Max R. | Copeland, KS 67837 | Oil & Gas Operator | Oct 2019 |
| 86 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | Sep 2025 |
| 87 | Lang Herman Oil | | Oil & Gas Operator | Dec 1996 |
| 88 | Lang, Herman - Marital Trust | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 89 | Lang, Kenneth R. | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 90 | Lebosquet Gas Operations, LLC | Wichita, KS 67202 | Gas Operator | Sep 2025 |
| 91 | Lebosquet John R | | Gas Operator | Dec 1994 |
| 92 | Lebosquet, John W. | Wichita, KS 67202 | Gas Operator | Sep 2025 |
| 93 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 94 | M3 Helium Corp | | Gas Operator | Sep 2025 |
| 95 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 96 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 97 | Mariah Operating Company, LLC | Denver, CO 80201 | Oil & Gas Operator | Dec 2009 |
| 98 | Max Papay LLC | Meade, KS 67864 | Oil & Gas Operator | Jun 2018 |
| 99 | Mayhew Properties | | Gas Operator | Sep 2025 |
| 100 | McCoy Petroleum | | Oil & Gas Operator | Aug 1996 |