| 1 | A & A Discovery, LLC | Hill City, KS 67642 | Oil Operator | May 2018 |
| 2 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 3 | Abercrombie Dril | | Oil Operator | Jan 1990 |
| 4 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2025 |
| 5 | Abraxas Petroleu | | Oil Operator | May 1986 |
| 6 | American Energie | | Oil & Gas Operator | May 1995 |
| 7 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Oct 2025 |
| 8 | Anderson Energy Inc | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 9 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 10 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | Dec 2025 |
| 11 | Arp Operating, LLC | Denver, CO 80202 | Oil Operator | Sep 2025 |
| 12 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Oct 2025 |
| 13 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 14 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 15 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Dec 2025 |
| 16 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 17 | Black Diamond Oil, Inc. | Hays, KS 67601 | Oil Operator | Apr 2019 |
| 18 | Black Petroleum Company | Wichita, KS 67277 | Oil Operator | Jan 2004 |
| 19 | Blake Exploration | Hays, KS 67601 | Oil Operator | Oct 2007 |
| 20 | Brito Oil Co., Inc | Wichita, KS 67201 | Oil & Gas Operator | Dec 2009 |
| 21 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 22 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 23 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Nov 2025 |
| 24 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 25 | Clothier, David W. | Eastborough, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 26 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Sep 2025 |
| 27 | Culbreath Oil & Gas Co Inc | Tulsa, OK 74135 | Oil & Gas Operator | Nov 2025 |
| 28 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Sep 2025 |
| 29 | Davis Drilling & | | Oil Operator | Jul 1989 |
| 30 | Dawson-Markwell Exploration Co. | Oklahoma City, OK 73101 | Oil & Gas Operator | Oct 2025 |
| 31 | DGH Oil, LLC | Logan, KS 67646 | Oil Operator | Sep 2025 |
| 32 | Dixon Energy, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Sep 2023 |
| 33 | Dixon Operating Company, LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 34 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 35 | Dreiling Exploration LLC | Victoria, KS 67671 | Oil Operator | Mar 2018 |
| 36 | Dunne Oil Co. | Wichita, KS 67202 | Oil Operator | Apr 1999 |
| 37 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Sep 2025 |
| 38 | Elk Energy Holdings LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 39 | Energy Explorati | | Oil & Gas Operator | Oct 1993 |
| 40 | Eternity Exploration, LLC | Coppell, TX 75019 | Oil Operator | Jun 2021 |
| 41 | Evans Oil D W - | | Oil Operator | Mar 1992 |
| 42 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 43 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 44 | First Energy Cor | | Oil Operator | Aug 1990 |
| 45 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 46 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Nov 2025 |
| 47 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2025 |
| 48 | Hansen, Dane G. - Trust | Logan, KS 67646 | Oil Operator | Oct 2013 |
| 49 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 50 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 51 | Jay Boy Oil Inco | | Oil & Gas Operator | May 1992 |
| 52 | JHS Energy, Inc | Denver, CO 80222 | Oil & Gas Operator | Sep 2025 |
| 53 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 54 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 55 | Landmark Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2025 |
| 56 | LB Exploration, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Sep 2025 |
| 57 | Mad Operators LLC | | Oil & Gas Operator | Sep 2025 |
| 58 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Nov 2025 |
| 59 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 60 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Nov 2025 |
| 61 | Meridian Energy Inc. | | Oil Operator | Sep 2025 |
| 62 | Mid Continent Resources, Inc. | Houston, TX 77060 | Oil & Gas Operator | Dec 2025 |
| 63 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 64 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 65 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2025 |
| 66 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 67 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 68 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 69 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Sep 2025 |
| 70 | O'Brien Resources LLC | Shreveport, LA 71136 | Oil Operator | Nov 2017 |
| 71 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Sep 2025 |
| 72 | Pet-Ex Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 73 | Petex Incorporat | | Oil Operator | Sep 1991 |
| 74 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 75 | Poe Servicing Inc | Oberlin, KS 67749 | Oil Operator | Oct 2019 |
| 76 | Prater Oil & Gas Operations, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 77 | Pratt, Don E. | Hays, KS 67601 | Oil Operator | Dec 1999 |
| 78 | Producers Equipm | | Oil Operator | Dec 1996 |
| 79 | Production Drilling, Inc. | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 80 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Sep 2025 |
| 81 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 82 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Sep 2025 |
| 83 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 84 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 85 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Sep 2025 |
| 86 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Sep 2025 |
| 87 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 88 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 89 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 90 | Thoroughbred Associates LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 91 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 92 | Tri United, Inc | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 93 | Val Energy, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 94 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 95 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 96 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 97 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 98 | White & Ellis Drilling, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 99 | Whitetail Crude Inc | Ness City, KS 67560 | Oil & Gas Operator | Sep 2025 |
| 100 | Wilton Petroleum, Inc. | Canton, KS 67428 | Oil & Gas Operator | Sep 2025 |