| 1 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 3 | Agv Corp. | Attica, KS 67009 | Oil & Gas Operator | Sep 2025 |
| 4 | Alliance Energy LLC | Hutchinson, KS 67501 | Oil & Gas Operator | Sep 2025 |
| 5 | Alpine Drilling | | Oil & Gas Operator | May 1994 |
| 6 | American Energie | | Oil & Gas Operator | May 1995 |
| 7 | American Petroleum Exploration Corp. | Wichita, KS 67201 | Gas Operator | Feb 2002 |
| 8 | American Trading | | Oil & Gas Operator | Dec 1995 |
| 9 | American Warrior | | Oil & Gas Operator | Sep 2025 |
| 10 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Oct 2025 |
| 11 | American Warrior, In | | Oil & Gas Operator | Sep 2024 |
| 12 | Anadarko Petrole | | Oil & Gas Operator | Dec 1996 |
| 13 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Nov 2025 |
| 14 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 15 | Arrow Production Company | Tulsa, OK 74108 | Oil & Gas Operator | Dec 2009 |
| 16 | Arrowhead Petrol | | Oil & Gas Operator | Feb 1992 |
| 17 | Ash, Wiley R., Jr. | Andover, KS 67002 | Oil & Gas Operator | Mar 1990 |
| 18 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 19 | Attica Gas Ventu | | Oil & Gas Operator | Dec 1995 |
| 20 | B & B Oil Compan | | Oil & Gas Operator | Jul 1992 |
| 21 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 22 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2025 |
| 23 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 24 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 25 | Bison Energy Cor | | Oil & Gas Operator | Aug 1995 |
| 26 | Bison Energy Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2022 |
| 27 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 28 | Blue Sky Investments LLC | Harper, KS 67058 | Oil Operator | Dec 2009 |
| 29 | Bluff Creek Ridge, Inc. | Anthony, KS 67003 | Oil & Gas Operator | Sep 2025 |
| 30 | Boswell Energy C | | Oil & Gas Operator | Jun 1994 |
| 31 | Boswell Energy Corporation | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 32 | BR Corporation | Independence, KS 67301 | Gas Operator | Feb 2003 |
| 33 | Bramwell Petroleum, Inc. | Zenda, KS 67159 | Oil & Gas Operator | Sep 2025 |
| 34 | Briscoe Petroleum, LLC | Sheridan, WY 82801 | Oil & Gas Operator | Nov 2025 |
| 35 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Aug 2025 |
| 36 | C & C Oil & Gas | Ranger, TX 76470 | Oil & Gas Operator | Dec 2025 |
| 37 | C & K Operating LLC | Kingman, KS 67068 | Oil & Gas Operator | Sep 2025 |
| 38 | Casey Musgrove Oil Company Inc | Ponca City, OK 74602 | Oil & Gas Operator | Oct 2025 |
| 39 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 40 | Chapman Energy O | | Oil & Gas Operator | Jun 1993 |
| 41 | Chesapeake Energy Ma | | Gas Operator | Jun 2016 |
| 42 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 43 | Chieftain Oil Co Inc | Kiowa, KS 67070 | Oil & Gas Operator | Nov 2025 |
| 44 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 45 | Clark Exploration Company | Highlands Ranch, CO 80126-7645 | Oil & Gas Operator | Nov 2024 |
| 46 | Clothier, David W. | Eastborough, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 47 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 48 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Sep 2025 |
| 49 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 50 | D & J Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Dec 2025 |
| 51 | Davis William H | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2014 |
| 52 | Davis, Wlliam H. | Tulsa, OK 74103 | Gas Operator | May 1998 |
| 53 | Delhi Pipeline | | Oil & Gas Operator | Sep 1999 |
| 54 | Dexxon Inc | Kiefer, OK 74041 | Oil & Gas Operator | Oct 2025 |
| 55 | Driller'S & Prod | | Oil & Gas Operator | Oct 1994 |
| 56 | Drop Tine Exploration, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2019 |
| 57 | Dutton Bill J Oi | | Oil & Gas Operator | Oct 1992 |
| 58 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 59 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 60 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 61 | Energy Marketing, Inc. | Omaha, NE 68102 | Oil & Gas Operator | Jul 2005 |
| 62 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 63 | Fairchild Explor | | Oil & Gas Operator | Apr 1995 |
| 64 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Nov 2025 |
| 65 | Flatlander Petroleum LLC | | Oil & Gas Operator | Sep 2025 |
| 66 | General Oil Comp | | Oil & Gas Operator | Nov 1993 |
| 67 | Getty Oil Compan | | Oil & Gas Operator | Jun 1992 |
| 68 | Glacier Petroleu | | Oil & Gas Operator | Nov 1995 |
| 69 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 70 | Gra Ex, LLC | Kingman, KS 67068 | Oil & Gas Operator | Oct 2023 |
| 71 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 72 | Graves Drilling | | Oil & Gas Operator | Sep 1995 |
| 73 | Graves Drilling Co., Inc. | Wichita, KS 67208 | Oil & Gas Operator | Sep 2025 |
| 74 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 75 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 76 | Griffin, Charles N. | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 77 | H3 Oil & Gas | | Oil & Gas Operator | Sep 2025 |
| 78 | Hart Energies, LLC | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2016 |
| 79 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 80 | Hasada Industrie | | Oil & Gas Operator | Jul 1995 |
| 81 | Hawkins Oil & Ga | | Oil & Gas Operator | Jun 1995 |
| 82 | Hayes Oil & Gas LLC | Attica, KS 67009 | Oil & Gas Operator | Sep 2025 |
| 83 | Hayes Well Servi | | Oil & Gas Operator | Feb 1992 |
| 84 | Helbing & Robert | | Oil & Gas Operator | Feb 1991 |
| 85 | Herman L. Loeb LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Sep 2025 |
| 86 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 87 | Hummon Corp | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2023 |
| 88 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Nov 2025 |
| 89 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 90 | Iuka-Carmi Development LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 91 | J & M Water Serv | | Oil Operator | Sep 1992 |
| 92 | Jody Oil & Gas Corporation | Attica, KS 67009 | Oil & Gas Operator | Sep 2025 |
| 93 | Jones G R Oil & | | Oil & Gas Operator | Nov 1993 |
| 94 | Judy Company Inc | Kansas City, KS 66111 | Oil & Gas Operator | May 2013 |
| 95 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 96 | KBW Oil & Gas Co | Kiowa, KS 67070 | Oil & Gas Operator | Jul 2024 |
| 97 | Kenneth W Cory LTD | Bellaire, TX 77401 | Oil & Gas Operator | Oct 2025 |
| 98 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 99 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 100 | Lansing Energy C | | Oil Operator | Jun 2006 |