| 1 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 2 | Abercrombie Drilling, Inc. | Wichita, KS 67202 | Oil Operator | May 1997 |
| 3 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Mar 2025 |
| 4 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 5 | Advantage Resour | | Oil & Gas Operator | May 1994 |
| 6 | American Energie | | Oil & Gas Operator | May 1995 |
| 7 | American Petrole | | Oil & Gas Operator | Dec 1996 |
| 8 | American Warrior | | Oil & Gas Operator | Mar 2025 |
| 9 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Apr 2025 |
| 10 | Anderson Energy, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Dec 2024 |
| 11 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | May 2025 |
| 12 | Arp Operating, LLC | Denver, CO 80202 | Oil Operator | Mar 2025 |
| 13 | Arroyo Petroleum | Wichita, KS 67205 | Oil Operator | Mar 2001 |
| 14 | Bankoff Oil Comp | | Oil Operator | Jun 1995 |
| 15 | Barracuda Operating Company | Ness City, KS 67560 | Oil Operator | Mar 2025 |
| 16 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 17 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 18 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 19 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 20 | Bickle Energies LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 21 | Biggy'S Petroleum | | Oil & Gas Operator | Dec 2024 |
| 22 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Mar 2025 |
| 23 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 24 | Blake Exploration, LLC | Bogue, KS 67625 | Oil Operator | Mar 2025 |
| 25 | Bowman Oil Compa | | Oil Operator | Feb 1994 |
| 26 | Brito Oil Co., Inc | Wichita, KS 67201 | Oil & Gas Operator | Dec 2009 |
| 27 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 28 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 29 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 30 | Carroll, Jon M. | Great Bend, KS 67530 | Oil Operator | Dec 2001 |
| 31 | Castle Resources | | Oil Operator | Jul 2002 |
| 32 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Mar 2025 |
| 33 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 34 | Charter Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 35 | Cheyenne Oil Services, Inc. | Ness City, KS 67560 | Oil Operator | Nov 2023 |
| 36 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 37 | Chief Drilling Company | | Oil Operator | Jun 1985 |
| 38 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Apr 2025 |
| 39 | Citadel Oil LLC | Edmond, OK 73083 | Oil Operator | Mar 2025 |
| 40 | Clinton Production, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 41 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 42 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 43 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 44 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 45 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 46 | Damar Resc Incor | | Oil Operator | Oct 1995 |
| 47 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Oct 2023 |
| 48 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2025 |
| 49 | Davis Petroleum | | Oil & Gas Operator | Dec 1996 |
| 50 | Davis Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Aug 2021 |
| 51 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Mar 2025 |
| 52 | DGH Oil, LLC | Logan, KS 67646 | Oil Operator | Mar 2025 |
| 53 | Donald C. Slawson | | Oil Operator | Jun 1985 |
| 54 | Double Eagle Exp | | Oil Operator | Jul 1992 |
| 55 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Mar 2025 |
| 56 | Dunne-Gardner Pe | | Oil & Gas Operator | Nov 1992 |
| 57 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2025 |
| 58 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Mar 2025 |
| 59 | Empire Energy E & P LLC | Mayville, NY 14757 | Oil & Gas Operator | Dec 2024 |
| 60 | Encore Operating Company | Denver, CO 80227 | Oil & Gas Operator | Feb 2025 |
| 61 | Energy Three, Inc. | Jackson, MS 39211 | Oil & Gas Operator | Apr 2025 |
| 62 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Jul 2025 |
| 63 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 64 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 65 | Farmer, John O., Inc. | Russell, KS 67665 | Oil & Gas Operator | Mar 2025 |
| 66 | Foxfire Explorat | | Oil Operator | Dec 1986 |
| 67 | Froelich Oil | | Oil Operator | Apr 2010 |
| 68 | G L M Company | | Oil Operator | Mar 2025 |
| 69 | G-D Oil Operations | | Oil Operator | May 1997 |
| 70 | Globe Operating, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 71 | Goodin Raymond M | | Oil Operator | Mar 1988 |
| 72 | Grand Mesa Operating Co | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 73 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Apr 2025 |
| 74 | Greene Enterprises, Inc. | Gillette, WY 82717 | Oil Operator | Dec 2009 |
| 75 | Guinn Investments, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2018 |
| 76 | H & B Petroleum Corp. | Hutchinson, KS 67504 | Oil & Gas Operator | Mar 2025 |
| 77 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Mar 2025 |
| 78 | H & M Petroleum Corporation | Lincoln, NE 68516 | Oil & Gas Operator | May 2025 |
| 79 | H-30 Incorporate | | Oil & Gas Operator | Nov 1990 |
| 80 | Hallwood Petrole | | Oil & Gas Operator | Apr 1999 |
| 81 | Hansen Dane G TR | | Oil Operator | Feb 1995 |
| 82 | Herman L. Loeb, LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Mar 2025 |
| 83 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Mar 2025 |
| 84 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Mar 2025 |
| 85 | J. W. Oil | | Oil Operator | Mar 2025 |
| 86 | Jason Oil Company | | Oil Operator | Dec 2014 |
| 87 | JHS Energy, Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2025 |
| 88 | Joe Gerstner Oil, LLC | Ness City, KS 67560 | Oil Operator | Mar 2025 |
| 89 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 90 | Jordan Oil Management Inc. | Haysville, KS 67060 | Oil & Gas Operator | Mar 2025 |
| 91 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 92 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 93 | King Oil Operations, LLC | Ellis, KS 67637 | Oil Operator | Mar 2025 |
| 94 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 95 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 96 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2025 |
| 97 | Landmark Oil Exp | | Oil Operator | Sep 1994 |
| 98 | Lansing Energy Operations | Wichita, KS 67202 | Oil Operator | Apr 2010 |
| 99 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Jul 2025 |
| 100 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |