| 1 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Apr 2025 |
| 2 | Agape Service Incorporated | Denver, CO 80201 | Gas Operator | Apr 2025 |
| 3 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | May 2025 |
| 4 | Amoco Production | | Oil & Gas Operator | Jun 2012 |
| 5 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jun 2025 |
| 6 | Arco Oil & Gas C | | Oil & Gas Operator | Dec 1992 |
| 7 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 8 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 9 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 10 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 11 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 12 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 13 | C. H. Todd, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Dec 2019 |
| 14 | Casillas Petroleum Corp | Satanta, KS 67870 | Oil & Gas Operator | Jun 2025 |
| 15 | Chesapeake Energy | | Oil & Gas Operator | Dec 2009 |
| 16 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2025 |
| 17 | Cimarex Energy Co. | Midland, TX 79706 | Oil & Gas Operator | Sep 2025 |
| 18 | Cisco Operating LLC | Plano, TX 75024 | Oil & Gas Operator | Jun 2025 |
| 19 | Coats Energy, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Apr 2025 |
| 20 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 21 | Coral Coast Petroleum, L.C. | Wichita, KS 67226 | Oil & Gas Operator | Nov 2019 |
| 22 | DCP Midstream, LP | Denver, CO 80237 | Oil Operator | Nov 2006 |
| 23 | DNB Drilling, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2001 |
| 24 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jul 2025 |
| 25 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Apr 2025 |
| 26 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Apr 2025 |
| 27 | Energypro, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Sep 2025 |
| 28 | Enterra Resources, LLC | Edmond, OK 73083 | Oil & Gas Operator | Apr 2025 |
| 29 | Evans Energy, LLC | Mount Hope, KS 67108 | Oil & Gas Operator | Apr 2025 |
| 30 | Farmer, John O., Inc. | Russell, KS 67665 | Oil & Gas Operator | Apr 2025 |
| 31 | Farris Well Service | | Oil & Gas Operator | Dec 2021 |
| 32 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 33 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 34 | Grand Mesa Operating Co | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 35 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Apr 2025 |
| 36 | H & L Oprerating Company LLP | Amarillo, TX 79114 | Oil & Gas Operator | Nov 2019 |
| 37 | Harris Oil & Gas Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2016 |
| 38 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | May 2025 |
| 39 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Sep 2025 |
| 40 | Huber J M Corpor | | Oil & Gas Operator | Dec 1996 |
| 41 | Huber Oil Company, A General Partnership | Madison, KS 66860 | Oil & Gas Operator | Feb 2025 |
| 42 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 43 | Inter-American Energy Corp. | Toronto, On Canada M5a1n1, 33139 | Gas Operator | Dec 2019 |
| 44 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 45 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Apr 2025 |
| 46 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Apr 2025 |
| 47 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 48 | Kimbark Oil & Ga | | Oil & Gas Operator | Aug 1992 |
| 49 | Landmark Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 50 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 51 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 52 | Liedtke Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2022 |
| 53 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 54 | Lobo Production, Inc | Goodland, KS 67735 | Gas Operator | Apr 2025 |
| 55 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 56 | Mariah Operating Company, LLC | Denver, CO 80201 | Oil & Gas Operator | Dec 2009 |
| 57 | Marlin Oil Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2025 |
| 58 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Jul 2025 |
| 59 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
| 60 | Merit Energy Company, LLC | Dallas, TX 75009 | Oil & Gas Operator | Apr 2025 |
| 61 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 62 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 63 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 64 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 65 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Apr 2025 |
| 66 | Osborn Heirs Company LTD | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 67 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 68 | P & M Energy, A General Partnership | Johnson, KS 67855 | Gas Operator | Sep 2003 |
| 69 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 70 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 71 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Apr 2025 |
| 72 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Apr 2025 |
| 73 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 74 | Powell Petroleum Resources, LLC | Houston, TX 77054 | Gas Operator | Jun 2005 |
| 75 | Presco Western LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2025 |
| 76 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 77 | Quantum Operating Company | Denver, CO 80201 | Oil & Gas Operator | Dec 2012 |
| 78 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 79 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |
| 80 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Sep 2025 |
| 81 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 82 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2025 |
| 83 | Superior Oil Com | | Oil & Gas Operator | Dec 1994 |
| 84 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | May 2025 |
| 85 | Triple-T Pipelin | | Oil & Gas Operator | Oct 1995 |
| 86 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 87 | Vastar Resources | | Oil & Gas Operator | Dec 1996 |
| 88 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Apr 2025 |
| 89 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 90 | Wabash Production And Development, Inc. | Fairfield, IL 62837 | Gas Operator | Apr 2002 |
| 91 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Jul 2025 |
| 92 | White Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Apr 2025 |
| 93 | White, Kenneth S. | Wichita, KS 67220 | Oil & Gas Operator | Sep 2022 |
| 94 | Wilson Charles B | | Oil & Gas Operator | Dec 1996 |
| 95 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |