| 1 | 3-T Oil | | Oil Operator | Dec 1996 |
| 2 | Abderhalden, R. R. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 3 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Jun 2025 |
| 4 | Agv Corp. | Attica, KS 67009 | Oil & Gas Operator | Jun 2025 |
| 5 | Ainsworth Operat | | Oil Operator | Apr 1995 |
| 6 | Ainsworth Operating Co. | Salem, OR 97302 | Oil Operator | Jun 2025 |
| 7 | Aladdin Petroleu | | Oil & Gas Operator | Nov 1995 |
| 8 | Allam Carl Oil C | | Oil Operator | Mar 1986 |
| 9 | Alliance Exploration Co., LLC | Tulsa, OK 74119 | Oil Operator | Apr 2017 |
| 10 | Allison J A | | Oil & Gas Operator | Nov 1995 |
| 11 | Amos, Joe | Wichita, KS 67233 | Oil Operator | Jul 1990 |
| 12 | Anderson Art Tan | | Oil Operator | Jul 1988 |
| 13 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 14 | Anstine & Musgrove Inc | Ponca City, OK 74602 | Oil & Gas Operator | Sep 2025 |
| 15 | Anstine Oil Company | | Oil Operator | Jun 2025 |
| 16 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 |
| 17 | Arroyo Petroleum | Wichita, KS 67205 | Oil Operator | Mar 2001 |
| 18 | Ash, Wiley R., Jr. | Andover, KS 67002 | Oil & Gas Operator | Mar 1990 |
| 19 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 20 | Atlantis Oil Cor | | Oil Operator | Sep 1989 |
| 21 | Aztec Oil Operating LLC | El Dorado, KS 67042 | Oil & Gas Operator | Jun 2025 |
| 22 | B & B Oil | Lyons, KS 67554 | Oil Operator | Mar 2025 |
| 23 | B & B Oil Compan | | Oil & Gas Operator | Jul 1992 |
| 24 | B & G Oil Compan | | Oil Operator | Aug 1994 |
| 25 | B & M Oil Co.. A General Partner | Eldorado, KS 67042 | Oil Operator | Jun 2025 |
| 26 | B8 Investments | | Oil Operator | Jun 2025 |
| 27 | Baker Oil Incorp | | Oil Operator | Oct 1985 |
| 28 | Ball, D. A. | El Dorado, KS 67042 | Oil Operator | Dec 2000 |
| 29 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Jun 2025 |
| 30 | Berentz Drilling | | Oil Operator | Jul 1995 |
| 31 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 32 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 33 | Big Eight Energy | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 34 | Big Eight Energy, L.L.C. | Wichita, KS 67275 | Oil Operator | Dec 2009 |
| 35 | Black Gold Well Service, Inc. | Towanda, KS 67144 | Oil Operator | Dec 2019 |
| 36 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 37 | Braden Petroleum & Well Plugging Company | | Oil Operator | Dec 2009 |
| 38 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 39 | Brandt Prod Comp | | Oil & Gas Operator | Sep 1994 |
| 40 | Brickley Enterprises, LLC | Eldorado, KS 67042 | Oil Operator | Jun 2025 |
| 41 | Brock Oil & Gas | | Oil & Gas Operator | Dec 1996 |
| 42 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 43 | Bruce Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 44 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 45 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 46 | C & G Drilling, Inc | Eureka, KS 67045 | Oil Operator | Jun 2025 |
| 47 | Cambern, Rex | Montgomery, TX 77356 | Oil Operator | Jan 1996 |
| 48 | Cascade Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 49 | Casillas Petroleum Corp | Satanta, KS 67870 | Oil & Gas Operator | Sep 2025 |
| 50 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Jun 2025 |
| 51 | Chestnut Production Company | Towanda, KS 67144 | Oil Operator | Jan 1999 |
| 52 | Cheyenne Explora | | Oil Operator | Jun 1983 |
| 53 | Commercial Oil - | | Oil Operator | Apr 1994 |
| 54 | Commercial Oil Company, Inc. | Wichita, KS 67204 | Oil Operator | Jun 2001 |
| 55 | Cook, James A. | Augusta, KS 67010 | Oil Operator | Jul 1997 |
| 56 | Cortam, Inc. | Augusta, KS 67010 | Oil Operator | Dec 2024 |
| 57 | Craig-Stephfield | | Oil & Gas Operator | Jan 1994 |
| 58 | Crawford Production Company Inc | Junction City, AR 71749 | Oil & Gas Operator | Jun 2025 |
| 59 | Crest Petr Inc | Rose Hill, KS 67133 | Oil Operator | Jun 2000 |
| 60 | Crowe Drilling C | | Oil & Gas Operator | May 1995 |
| 61 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Aug 2025 |
| 62 | D & J Investment | | Oil Operator | Jun 1995 |
| 63 | D & J Investments | | Oil Operator | Dec 2009 |
| 64 | D.K. Rush Oil Co., LLC | El Dorado, KS 67042 | Oil Operator | Jun 2025 |
| 65 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 66 | David D. Davis | Benton, KS 67017 | Oil Operator | Dec 2009 |
| 67 | Davies & Company Inc | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2000 |
| 68 | Davis Contract Pumping | | Oil Operator | Oct 2000 |
| 69 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Jun 2025 |
| 70 | Denmark Oil | Wichita, KS 67212 | Oil & Gas Operator | May 2000 |
| 71 | Directional Drilling Systems, LLC | Greenwood VIllage, CO 80111 | Oil Operator | Dec 2019 |
| 72 | Double D Oil Co | Winfield, KS 67156 | Oil Operator | Jun 2025 |
| 73 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Jun 2025 |
| 74 | Duane Exploration Limited | Andover, KS 67002 | Oil Operator | Jul 1996 |
| 75 | Dunne Equities I | | Oil & Gas Operator | Dec 1995 |
| 76 | Dunne Equities, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2014 |
| 77 | Dunne Investments Operating, Inc. | Wichita, KS 67226 | Oil Operator | Mar 2002 |
| 78 | Eagle Creek Resources, LLC | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2024 |
| 79 | Elk Energy Holdings LLC | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 80 | Energy Three Inc. | Jackson, MS 39211 | Oil & Gas Operator | Aug 2025 |
| 81 | Enoch Oil | Wichita, KS 67216 | Oil Operator | Jan 2001 |
| 82 | Entransco Energy LLC | Dewey, OK 74029 | Oil & Gas Operator | Oct 2024 |
| 83 | Epoc, LLC | Andover, KS 67002 | Oil Operator | Jun 2025 |
| 84 | Equinox Oil Company Inc | Plainville, KS 67663 | Oil & Gas Operator | Dec 2019 |
| 85 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 86 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 87 | Flintstone Energy, LLC | El Dorado, KS 67042 | Oil Operator | Jun 2020 |
| 88 | Flowers Prod Com | | Oil Operator | Aug 1994 |
| 89 | Flowers Production Co., Inc. | El Dorado, KS 67042 | Oil Operator | Jul 2009 |
| 90 | G & W Oil Prod - | | Oil Operator | Oct 1995 |
| 91 | Gateway Resources, LLC | Wichita, KS 67218 | Oil Operator | Jun 2025 |
| 92 | Gee, Fred E. | Topeka, KS 66614 | Oil Operator | May 1998 |
| 93 | Gen-Dor Oil Co. | | Oil & Gas Operator | Nov 2009 |
| 94 | Giles, Benjamin M. | Towanda, KS 67144 | Oil & Gas Operator | Oct 2016 |
| 95 | Gilliland, Anthony L. | Edwardsville, KS 66111 | Oil Operator | Jun 2025 |
| 96 | Glacier Petroleu | | Oil & Gas Operator | Nov 1995 |
| 97 | Glacier Petroleum Co Inc | Emporia, KS 66801 | Oil & Gas Operator | Jun 2025 |
| 98 | Glaves Oil Company | Douglass, KS 67039 | Oil Operator | Mar 2019 |
| 99 | Goben'S United Petroleum, Inc. | Wichita, KS 67218 | Oil Operator | Nov 2001 |
| 100 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |