| 1 | Ainsworth Operat | | Oil Operator | Apr 1995 |
| 2 | Ainsworth Operating Co. | Salem, OR 97302 | Oil Operator | Dec 2025 |
| 3 | Alexander Production Service | | Oil & Gas Operator | Dec 2009 |
| 4 | Arbuckle Energy Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2025 |
| 5 | Arnold Prodn. | | Oil & Gas Operator | Jan 2006 |
| 6 | Atlantis Oil Cor | | Oil Operator | Sep 1989 |
| 7 | B & B Oil Compan | | Oil & Gas Operator | Jul 1992 |
| 8 | B & N Gas Company, LLC | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 9 | Bandy, Paul & Marjorie, Irrevocable Trust | Canton, KS 67428 | Oil & Gas Operator | Nov 2009 |
| 10 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Dec 2025 |
| 11 | Bisbee Gas & Oil | | Oil & Gas Operator | Mar 1995 |
| 12 | Bisbee Oil And Gas Co., Inc. | Kansas City, MO 64106 | Oil & Gas Operator | Dec 2009 |
| 13 | Black Frank J | | Oil & Gas Operator | Jan 1994 |
| 14 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 15 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 16 | Boettcher, Fred | Marion, KS 66861 | Oil & Gas Operator | Dec 2009 |
| 17 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 18 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 19 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 20 | Bruce Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Dec 2025 |
| 21 | Bryan Eugene W S | | Oil & Gas Operator | Nov 1995 |
| 22 | Buckeye West LLC | Wooster, OH 44691 | Oil Operator | Dec 2025 |
| 23 | C & G Drilling, Inc | Eureka, KS 67045 | Oil Operator | Dec 2025 |
| 24 | C & G Oil Compan | | Oil & Gas Operator | Dec 1989 |
| 25 | C & J Production LLC | Marion, KS 66861 | Oil & Gas Operator | Feb 2025 |
| 26 | C & S Oil Compan | | Oil & Gas Operator | Jun 1992 |
| 27 | C & S Oil Company | Odessa, TX 79763 | Oil & Gas Operator | Nov 2019 |
| 28 | C & S Well Servi | | Oil & Gas Operator | Nov 1995 |
| 29 | C & S Well Servicing Co. | Lyons, KS 67554 | Oil & Gas Operator | Jul 2000 |
| 30 | Calgary Energy LLC | Collinsville, OK 74021 | Oil & Gas Operator | Feb 2026 |
| 31 | Calvin Noah, LLC | Valley Center, KS 67147 | Oil Operator | Dec 2025 |
| 32 | Cambern, Rex | Montgomery, TX 77356 | Oil Operator | Jan 1996 |
| 33 | Carroll Oil Prod | | Oil Operator | Jan 1986 |
| 34 | Cascade Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 35 | CFM 66 LLC | McPherson, KS 67460 | Oil & Gas Operator | Sep 2025 |
| 36 | CG Oil Co. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2011 |
| 37 | CK Oil & Gas LLC | Herington, KS 67449 | Oil & Gas Operator | Mar 2025 |
| 38 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 39 | Cooper, Lowell E. | Peabody, KS 66866 | Oil Operator | Nov 1987 |
| 40 | Crawford Production Company Inc | Junction City, AR 71749 | Oil & Gas Operator | Dec 2025 |
| 41 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 42 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Nov 2025 |
| 43 | D & F Petroleum | | Oil & Gas Operator | Sep 1990 |
| 44 | Damson Oil Corpo | | Oil & Gas Operator | May 1994 |
| 45 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Apr 2026 |
| 46 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 47 | Decker Petroleum | | Oil & Gas Operator | Oct 2002 |
| 48 | Dieter Prod Comp | | Oil & Gas Operator | Feb 1991 |
| 49 | Dieter Production Company | Durham, KS 67438 | Gas Operator | Mar 2013 |
| 50 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 51 | Drillers & Producers, Inc. | Newton, KS 67114 | Oil Operator | Dec 2019 |
| 52 | Eagle Resources | | Oil & Gas Operator | Mar 1987 |
| 53 | Enex Resources C | | Gas Operator | Nov 1987 |
| 54 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 55 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Dec 2025 |
| 56 | Four-J Oil Ops | Osawatomie, KS 66064 | Oil Operator | Mar 1998 |
| 57 | G & L Oil Compan | | Oil Operator | Oct 1988 |
| 58 | G L M Company | | Oil Operator | Dec 2025 |
| 59 | Gear Petroleum Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 60 | Glacier Petroleu | | Oil & Gas Operator | Nov 1995 |
| 61 | Glenda Gas Compa | | Oil Operator | Sep 1988 |
| 62 | H & H Oil Compan | | Oil & Gas Operator | Aug 1995 |
| 63 | H & H Oil Company | | Oil & Gas Operator | Dec 2025 |
| 64 | H & H Oil, LLC | Lincolnville, KS 66858 | Oil Operator | Dec 2025 |
| 65 | Hamby Oil LLC | Ellinwood, KS 67526 | Oil Operator | May 2013 |
| 66 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Dec 2025 |
| 67 | Hett Oil & Gas, LLC | Lincolnville, KS 66858 | Oil & Gas Operator | Dec 2025 |
| 68 | Hillenburg Oil Co., A General Partnership | Broken Arrow, OK 74011 | Oil Operator | Dec 2025 |
| 69 | Hodges Oil | | Oil Operator | Dec 2025 |
| 70 | J & H Oil Compan | | Oil Operator | Jul 1995 |
| 71 | J & H Oil Company, A General Partnership | Lincolnville, KS 66858 | Oil Operator | Jan 2002 |
| 72 | Johnson, Charles | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 73 | Jones, Cal | Canton, KS 67428 | Oil & Gas Operator | Mar 2002 |
| 74 | Jost, Selma | Reedley, CA 93654 | Oil Operator | Jul 1996 |
| 75 | K C Development | | Oil & Gas Operator | Dec 1996 |
| 76 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Dec 2025 |
| 77 | K.C. Development, Inc. | Marion, KS 66861 | Oil Operator | Mar 2009 |
| 78 | Kansas Crude Oil | | Oil Operator | Dec 1987 |
| 79 | Kjellin, Charles Willard (Deceased) | Marion, KS 66861 | Oil & Gas Operator | Oct 2013 |
| 80 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 81 | Kot, Inc. | Lost Springs, KS 66859 | Oil Operator | Aug 2016 |
| 82 | Kremeier Prod & Operating | | Oil & Gas Operator | Jan 2010 |
| 83 | Krier Oil Oper - | | Oil Operator | Sep 1995 |
| 84 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 85 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 86 | Longhorn Oil & Gas | | Oil Operator | Sep 2025 |
| 87 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2026 |
| 88 | McGinness Oil Co | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 89 | McGinness Oil Company Of Kansas, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Nov 2019 |
| 90 | Messman Corporation | Wichita, KS 67208 | Oil & Gas Operator | Dec 2025 |
| 91 | Metro Energy Group, Inc. | Bossier City, LA 71112 | Oil & Gas Operator | May 2013 |
| 92 | Mid Kansas Gas Gathering | | Gas Operator | Dec 2025 |
| 93 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Dec 2025 |
| 94 | Montgomery Production & Operating LLC | Herington, KS 67449 | Oil & Gas Operator | Dec 2025 |
| 95 | Moore, Brent L. | McPherson, KS 67460 | Oil Operator | Dec 1996 |
| 96 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 97 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 98 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Dec 2025 |
| 99 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 100 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |