| 1 | 3G Production, LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 2 | 4-D Petroleum Consultants,LLC | Preston, KS 67583 | Oil & Gas Operator | Feb 2013 |
| 3 | A & A Discovery, Inc | Hill City, KS 67642 | Oil Operator | Aug 2002 |
| 4 | Abercrombie A L Inc | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 5 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2025 |
| 6 | Adams Affiliates, Inc. | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 7 | Adams Resources Expl. Corp. | Houston, TX 77001 | Oil & Gas Operator | Apr 2020 |
| 8 | Ainsworth Operat | | Oil Operator | Apr 1995 |
| 9 | Allen Drilling Company | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 10 | Allison J A | | Oil & Gas Operator | Nov 1995 |
| 11 | American Energie | | Oil & Gas Operator | May 1995 |
| 12 | American Petrole | | Oil & Gas Operator | Dec 1996 |
| 13 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Nov 2025 |
| 14 | Antares Oil Corp | Denver, CO 80202 | Oil & Gas Operator | Oct 2015 |
| 15 | Apollo Energies | Pratt, KS 67124 | Oil Operator | Aug 2016 |
| 16 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 17 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | Feb 2026 |
| 18 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
| 19 | Argonaut Energy | | Oil & Gas Operator | Aug 1991 |
| 20 | Ash William P | | Oil & Gas Operator | May 1985 |
| 21 | Associated Petro | | Oil & Gas Operator | Aug 1994 |
| 22 | Austin Robert L | Stafford, KS 67578 | Oil & Gas Operator | Dec 1999 |
| 23 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Nov 2025 |
| 24 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2026 |
| 25 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Sep 2025 |
| 26 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Nov 2025 |
| 27 | Bengalia Land And Cattle Company | Tulsa, OK 74152 | Oil & Gas Operator | Aug 2025 |
| 28 | Benson Mineral G | | Oil & Gas Operator | Dec 1995 |
| 29 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 30 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 31 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 32 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 33 | Black W K Incorp | | Oil & Gas Operator | Sep 1991 |
| 34 | Black W K Produc | | Oil & Gas Operator | Aug 1991 |
| 35 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |
| 36 | Bob'S Hauling Service, Inc. | St John, KS 67576 | Oil Operator | Aug 2025 |
| 37 | Bowers Drilling | | Oil & Gas Operator | Jul 1995 |
| 38 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 39 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Oct 2025 |
| 40 | Braden-Deem Inco | | Oil & Gas Operator | Nov 1994 |
| 41 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 42 | Brunson Production, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 43 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 44 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 45 | C & B Operating Inc. | St John, KS 67576 | Oil & Gas Operator | Sep 2025 |
| 46 | C & K Operating LLC | Kingman, KS 67068 | Oil & Gas Operator | Sep 2025 |
| 47 | Caerus Kansas LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 48 | Campbell Robert | | Oil & Gas Operator | Aug 1990 |
| 49 | Canaday Oil Corp | Goddard, KS 67052 | Oil & Gas Operator | Sep 2025 |
| 50 | Case Oil & Gas I | | Oil & Gas Operator | Apr 1992 |
| 51 | Castle Resources | | Oil Operator | Jul 2002 |
| 52 | Central Energy C | | Oil & Gas Operator | Jun 1994 |
| 53 | Chance Drilling Company | Commerce City, CO 80022 | Oil Operator | Sep 2009 |
| 54 | Circle K Enterprises | | Oil & Gas Operator | Aug 2023 |
| 55 | Citation Oil & G | | Oil & Gas Operator | Dec 1996 |
| 56 | Clark, Robert A. | Wichita, KS 67202 | Gas Operator | Jul 1990 |
| 57 | Clinton Producti | | Oil Operator | Dec 1989 |
| 58 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 59 | Cobra Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 60 | Columbian Servic | | Oil & Gas Operator | Nov 1993 |
| 61 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 62 | Continental Oil | | Oil Operator | Jun 1985 |
| 63 | Crockett Oil And Gas, Inc. | Sharon, KS 67138 | Oil & Gas Operator | Jun 2006 |
| 64 | Dalen Resources Oil & Gas Co | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 65 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 66 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Feb 2026 |
| 67 | Davies & Company Inc | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2000 |
| 68 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 69 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Sep 2025 |
| 70 | Delhi Gas Pipeli | | Gas Operator | Aug 1998 |
| 71 | Destiny Services LLC | Pratt, KS 67124 | Oil & Gas Operator | Jan 2024 |
| 72 | Deutsch Oil Comp | | Oil & Gas Operator | Oct 1994 |
| 73 | Deutsch Oil Company | | Oil & Gas Operator | Sep 2025 |
| 74 | Dixon Operating Company, LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 75 | DNB Drilling, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2001 |
| 76 | Dudrey Carl | | Oil & Gas Operator | Feb 1993 |
| 77 | Dunne Equities Operating, Inc. | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 78 | Eagle Creek Corporation | Andover, KS 67002 | Oil & Gas Operator | Sep 2025 |
| 79 | Eagle Exploratio | | Oil & Gas Operator | Oct 1991 |
| 80 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Nov 2025 |
| 81 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 82 | Ellsworth Systems, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2005 |
| 83 | Elm Creek Oil, LLC | | Oil Operator | Sep 2025 |
| 84 | Emerson, Jim | Plano, TX 75074 | Oil & Gas Operator | Jan 1995 |
| 85 | Empire Energy E & P, LLC | Mayville, NY 14757 | Oil & Gas Operator | Mar 2019 |
| 86 | Energy Three Inc. | Jackson, MS 39211 | Oil & Gas Operator | Sep 2025 |
| 87 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 88 | Excel Oil & Gas L.L.C. | Bucyrus, KS 66013 | Oil Operator | Sep 2025 |
| 89 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 90 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 91 | Fairway Petroleu | | Oil & Gas Operator | Dec 1994 |
| 92 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 93 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 94 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 95 | Farrar Pump & Su | | Oil & Gas Operator | Dec 1996 |
| 96 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 97 | Flatlander Energy LLC | Blackwell, OK 74631 | Oil & Gas Operator | Nov 2025 |
| 98 | Gemini Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 99 | General Oil Comp | | Oil & Gas Operator | Nov 1993 |
| 100 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Feb 2026 |