| 1 | A X & P, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jul 2015 |
| 2 | Ace Energy LLC | Leawood, KS 66211 | Oil & Gas Operator | May 2026 |
| 3 | Ajax Oil & Gas C | | Oil & Gas Operator | Jun 1989 |
| 4 | American Energy | Abilene, TX 79604 | Oil & Gas Operator | Jul 2004 |
| 5 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Jul 2026 |
| 6 | Billy Oil Incorp | | Oil & Gas Operator | Nov 1991 |
| 7 | Black & White Oper. | Thayer, KS 66776 | Oil Operator | Aug 1998 |
| 8 | Blue Top Crude Oil Co., Inc. | Farlington, KS 66734 | Oil Operator | Mar 2026 |
| 9 | Bluetop Oil Comp | | Oil Operator | Nov 1995 |
| 10 | Bonanza Energy Corp | Benedict, KS 66714 | Oil & Gas Operator | Jul 2003 |
| 11 | Central States O | | Oil & Gas Operator | May 1992 |
| 12 | Clawson, Merle Eugene | McCune, KS 66753 | Oil Operator | Nov 2016 |
| 13 | Copperhead Oil | Colony, KS 66015 | Oil Operator | Sep 1985 |
| 14 | Crawford County Production LLC | | Oil Operator | Mar 2026 |
| 15 | Eitel Energy, LLC | Farlington, KS 66734 | Oil Operator | Feb 2026 |
| 16 | Falkin, Richard T. | Hepler, KS 66746 | Oil Operator | Nov 2019 |
| 17 | Flintstone Energy, LLC | El Dorado, KS 67042 | Oil Operator | Jun 2020 |
| 18 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Nov 2025 |
| 19 | Jayhawk Energy, Inc. | Spokane, WA 99202 | Oil & Gas Operator | May 2016 |
| 20 | L & L Oil Compan | | Oil Operator | Oct 1984 |
| 21 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2025 |
| 22 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 23 | Lorenz, James D. | Parsons, KS 67357 | Oil & Gas Operator | May 2014 |
| 24 | McRae, William R. | Scottsdale, AZ 85254 | Oil Operator | Aug 1995 |
| 25 | Mid-Continent En | | Oil & Gas Operator | Nov 1995 |
| 26 | Midnight Well Se | | Oil Operator | Sep 1994 |
| 27 | Multiplex Resources, Inc. | Baytown, TX 77521 | Oil Operator | Dec 2009 |
| 28 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Mar 2026 |
| 29 | O'Connell, James P. | Vacaville, CA 95687 | Oil Operator | Nov 2009 |
| 30 | Phoenix Kansas Energy, LLC | Chanute, KS 66720 | Oil Operator | Aug 2003 |
| 31 | Production Team | | Oil & Gas Operator | Sep 1991 |
| 32 | Rama Operating C | | Oil & Gas Operator | Dec 1996 |
| 33 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Mar 2026 |
| 34 | Rhodes Well Service | | Oil Operator | Mar 2026 |
| 35 | RJ Energy, LLC | Garnett, KS 66032 | Oil Operator | Mar 2026 |
| 36 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Mar 2026 |
| 37 | Sand Bar Oil Com | | Oil Operator | Jun 1986 |
| 38 | See Oil | | Oil Operator | Mar 2026 |
| 39 | Sek Energy, LLC | Benedict, KS 66714 | Oil & Gas Operator | Mar 2026 |
| 40 | Sirius Energy Corp. | Abilene, TX 79606 | Oil Operator | Dec 2009 |
| 41 | Smith, David | Wichita Falls, TX 76310 | Oil Operator | Jul 2026 |
| 42 | Smith, Loren L. | Oswego, KS 67356 | Oil & Gas Operator | Sep 2009 |
| 43 | Sotta, Donald E. | McCune, KS 66753 | Oil Operator | Dec 2025 |
| 44 | Stephens Oil Co. | | Oil Operator | Dec 2017 |
| 45 | T.C.G. Oil Co., A General Partnership | Laharpe, KS 66755 | Oil Operator | Aug 2009 |
| 46 | Texokan Energy C | | Oil Operator | Nov 1986 |
| 47 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Aug 2009 |
| 48 | Town Oil Co. | Paola, KS 66071 | Oil & Gas Operator | Mar 2026 |