| 1 | A & A Production | | Oil Operator | Feb 2013 |
| 2 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 3 | Adeco, Inc. | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 4 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Jan 2026 |
| 5 | Angle Oil Compan | | Oil Operator | Jun 1994 |
| 6 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 7 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 8 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 9 | Black Petroleum | | Oil Operator | Sep 1989 |
| 10 | Bowman Oil Compa | | Oil Operator | Feb 1994 |
| 11 | Bowman Oil Company, A General Partnership | Codell, KS 67663 | Oil Operator | Dec 2025 |
| 12 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Jan 2026 |
| 13 | Brinker Enterprises, LLC | Glen Elder, KS 67446 | Oil Operator | Dec 2025 |
| 14 | C. H. Todd, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Dec 2019 |
| 15 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2025 |
| 16 | Castle Resources | | Oil Operator | Jul 2002 |
| 17 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Dec 2025 |
| 18 | Champion Petrole | | Oil Operator | Jan 1992 |
| 19 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 20 | Cinco Exploratio | | Oil & Gas Operator | Jan 1988 |
| 21 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 22 | Coachman Energy Operating Co, LLC | Englewood, CO 80111 | Oil Operator | May 2024 |
| 23 | Compass Exploration LLC | Hill City, KS 67642 | Oil Operator | Dec 2025 |
| 24 | Culbreath Oil & Gas Co Inc | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2026 |
| 25 | Damar Resc Incor | | Oil Operator | Oct 1995 |
| 26 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Aug 2025 |
| 27 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Apr 2026 |
| 28 | Denis Roberts Oil | | Oil Operator | Nov 2025 |
| 29 | Diamond Chemical | | Oil & Gas Operator | Jan 1995 |
| 30 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Dec 2025 |
| 31 | Dreiling Oil Inc | Hays, KS 67601 | Oil Operator | Jun 2018 |
| 32 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Dec 2025 |
| 33 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
| 34 | Frontier Oil Com | | Oil & Gas Operator | May 1995 |
| 35 | Galloway Petrole | | Oil Operator | Jun 1993 |
| 36 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 37 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Dec 2025 |
| 38 | Haffner Dan | Hoxie, KS 67740 | Oil Operator | Dec 2025 |
| 39 | Hansen Dane G TR | | Oil Operator | Feb 1995 |
| 40 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Dec 2025 |
| 41 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Dec 2025 |
| 42 | Hoff Oil & Gas | | Oil Operator | May 2013 |
| 43 | Hugoton Energy C | | Oil & Gas Operator | Feb 2004 |
| 44 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Dec 2025 |
| 45 | Jason Oil Company | | Oil Operator | Dec 2014 |
| 46 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Dec 2025 |
| 47 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 48 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 49 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 50 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 51 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2026 |
| 52 | Katz Joe Oil Acc | | Oil Operator | Oct 1995 |
| 53 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2025 |
| 54 | Landmark Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 55 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 56 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 57 | Lloyd Drilling C | | Oil Operator | Aug 1995 |
| 58 | Lloyd Drilling Company | Morland, KS 67650 | Oil Operator | Oct 2009 |
| 59 | Mad Operators LLC | | Oil & Gas Operator | Dec 2025 |
| 60 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 61 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 62 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 63 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 64 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 65 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 66 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Dec 2025 |
| 67 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 68 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 69 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 70 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 71 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 72 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 73 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 74 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 75 | Oil Property Man | | Oil & Gas Operator | Jun 1995 |
| 76 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 77 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 78 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 79 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Apr 2026 |
| 80 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 81 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 82 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 83 | Pintail Petroleu | | Oil & Gas Operator | Dec 1995 |
| 84 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 85 | Pinto Petroleum | Wichita, KS 67211 | Oil Operator | Nov 2001 |
| 86 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Dec 2025 |
| 87 | Pratt, Don E. | Hays, KS 67601 | Oil Operator | Dec 1999 |
| 88 | Rains & Williamson Oil Co Inc | Wichita, KS 67277 | Oil & Gas Operator | Dec 2025 |
| 89 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 90 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2025 |
| 91 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Dec 2025 |
| 92 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 93 | Reilly Oil E & P | | Oil Operator | Dec 2025 |
| 94 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 95 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Dec 2025 |
| 96 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 97 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Dec 2025 |
| 98 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 |
| 99 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Dec 2025 |
| 100 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |