| 1 | Alexander, Jesse R. | McPherson, KS 67460 | Oil Operator | Aug 2010 |
| 2 | American Energie | | Oil & Gas Operator | May 1995 |
| 3 | American Energies Pipeline, LLC | Dallas, TX 75207 | Oil & Gas Operator | Jan 2015 |
| 4 | Anderson Energy Inc | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 5 | Anderson Kent | | Oil Operator | Dec 2009 |
| 6 | Anderson, Kendra A. | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 7 | Arco Oil & Gas C | | Oil & Gas Operator | Dec 1992 |
| 8 | Ardc Inc. | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 9 | Arrowhead Petroleum Of Kansas, Inc. | Wellington, KS 67152 | Oil & Gas Operator | Oct 2004 |
| 10 | Ash Donald D Oil | | Oil & Gas Operator | Feb 1986 |
| 11 | Asher Associates Inc | Centennial, CO 80112 | Oil & Gas Operator | Aug 2016 |
| 12 | B M & S Oil | | Oil Operator | Apr 1986 |
| 13 | Bandy Paul L | | Oil Operator | Nov 1996 |
| 14 | Bandy, Paul & Marjorie, Irrevocable Trust | Canton, KS 67428 | Oil & Gas Operator | Nov 2009 |
| 15 | Barnett Winfred | | Oil & Gas Operator | Feb 1982 |
| 16 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Sep 2025 |
| 17 | Bennett & Schulte Oil Co., A General Partnership | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 18 | Berentz Drilling | | Oil Operator | Jul 1995 |
| 19 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 20 | Black Frank J | | Oil & Gas Operator | Jan 1994 |
| 21 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 22 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 23 | Blackstone Drilling, Inc. | McPherson, KS 67460 | Gas Operator | Nov 2011 |
| 24 | Bradley Oil Company | Edmond, OK 73013 | Oil Operator | Sep 2025 |
| 25 | Brigman Prod Inc | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2009 |
| 26 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 27 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 28 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 29 | Bruce Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 30 | Brunson Producti | | Oil & Gas Operator | Aug 1993 |
| 31 | Brunson Production, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 32 | Bryan Eugene W S | | Oil & Gas Operator | Nov 1995 |
| 33 | Bryan, Dorothy J. | Canton, KS 67428 | Oil & Gas Operator | Nov 2000 |
| 34 | Buckeye West LLC | Wooster, OH 44691 | Oil Operator | Sep 2025 |
| 35 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 36 | C & J Production LLC | Marion, KS 66861 | Oil & Gas Operator | Feb 2025 |
| 37 | C A P Operating | | Oil Operator | Sep 1992 |
| 38 | Calgary Energy LLC | Collinsville, OK 74021 | Oil & Gas Operator | Oct 2025 |
| 39 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 40 | Casebeer, Inc. | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 41 | Cat Energy, LLC | Galva, KS 67443 | Oil Operator | Aug 2008 |
| 42 | CFM 66 LLC | McPherson, KS 67460 | Oil & Gas Operator | Sep 2025 |
| 43 | Cherokee Energy | | Oil & Gas Operator | Oct 1988 |
| 44 | Chris Batchman Inc. | Ellinwood, KS 67526 | Oil Operator | Sep 2025 |
| 45 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 46 | Col-Kan Developm | | Oil & Gas Operator | Jan 1995 |
| 47 | Colorado Oil & G | | Oil & Gas Operator | Oct 1987 |
| 48 | Continental Brok | | Oil Operator | Oct 1994 |
| 49 | Coronado Oil | Lindsborg, KS 67456 | Oil Operator | Sep 1985 |
| 50 | Coronado Oil & G | | Oil Operator | Dec 1996 |
| 51 | Coronado Oil, Inc. | Salina, KS 67401 | Oil Operator | May 1990 |
| 52 | Culver & Grounds | | Oil & Gas Operator | Nov 1995 |
| 53 | Culver & Grounds Oil Properties, Inc. | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 54 | D & R Oil Properties | | Oil Operator | May 1998 |
| 55 | D & R Oil, Inc. | Galva, KS 67443 | Oil & Gas Operator | Jul 2025 |
| 56 | D & R Well Service, Inc. | Galva, KS 67443 | Oil & Gas Operator | Sep 2025 |
| 57 | D U Investments | Salina, KS 67401 | Oil & Gas Operator | Dec 2009 |
| 58 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 59 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Sep 2025 |
| 60 | Decker Petroleum | | Oil & Gas Operator | Oct 2002 |
| 61 | Delhi Pipeline | | Oil & Gas Operator | Sep 1999 |
| 62 | Dell-Ray Investments, Inc. | Nickerson, KS 67561 | Oil Operator | Dec 2019 |
| 63 | Don Sims Oil | | Oil Operator | Sep 2025 |
| 64 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 65 | Duane Exploration Limited | Andover, KS 67002 | Oil Operator | Jul 1996 |
| 66 | Dunham'S Oil, LLC | Eureka, KS 67045 | Oil Operator | Aug 2025 |
| 67 | E & E Oil | | Oil Operator | Dec 2019 |
| 68 | E&E Oil LLC | Canton, KS 67428 | Oil Operator | Sep 2025 |
| 69 | Eagle Energy | Midland, TX 79710 | Oil & Gas Operator | Aug 1994 |
| 70 | Eagle Resources | | Oil & Gas Operator | Mar 1987 |
| 71 | Ecco | | Oil Operator | Sep 2025 |
| 72 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 73 | Edwards Oil Properties | | Oil Operator | Dec 2009 |
| 74 | Empire Energy E & P, LLC | Mayville, NY 14757 | Oil & Gas Operator | Mar 2019 |
| 75 | Energy Sources I | | Oil & Gas Operator | Jul 1986 |
| 76 | Evans Oil D W - | | Oil Operator | Mar 1992 |
| 77 | Excalibur Prod C | | Oil & Gas Operator | Jun 1995 |
| 78 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Sep 2025 |
| 79 | Excel Oil & Gas L.L.C. | Bucyrus, KS 66013 | Oil Operator | Sep 2025 |
| 80 | Falcon Energy Co | | Oil Operator | Apr 1992 |
| 81 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 82 | Fender, Mildred A. | Russell, KS 67665 | Oil & Gas Operator | Jun 2000 |
| 83 | Florine, Inc. | Gypsum, KS 67448 | Oil Operator | Sep 2025 |
| 84 | G M Oil | McPherson, KS 67460 | Oil Operator | Aug 1997 |
| 85 | Giant Holding, LLC | Tucson, AZ 85713 | Oil & Gas Operator | Mar 2025 |
| 86 | Glacier Petroleum Co Inc | Emporia, KS 66801 | Oil & Gas Operator | Sep 2025 |
| 87 | Gould Oil Incorp | | Oil & Gas Operator | May 1996 |
| 88 | GPS Oil Lease Operations | Inman, KS 67546 | Oil Operator | Jun 2001 |
| 89 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 90 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 91 | Grassland Petrol | | Oil Operator | Feb 1993 |
| 92 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 93 | Haven Oil & Gas | Hutchinson, KS 67504 | Oil & Gas Operator | Mar 2009 |
| 94 | Hawkeye Oil | | Oil & Gas Operator | Jun 2007 |
| 95 | Helberg Oil Comp | | Oil Operator | Mar 1995 |
| 96 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Sep 2025 |
| 97 | Hiebert & Wedel | | Oil & Gas Operator | May 1995 |
| 98 | Hillenburg Oil C | | Oil Operator | Apr 1994 |
| 99 | Hillenburg Oil Co., A General Partnership | Broken Arrow, OK 74011 | Oil Operator | Sep 2025 |
| 100 | Holton Brothers | Canton, KS 67428 | Oil Operator | Apr 1990 |