| 1 | Ace Oil Company | | Oil Operator | Dec 2025 |
| 2 | Amarillo Exploration, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Apr 2026 |
| 3 | American Energie | | Oil & Gas Operator | May 1995 |
| 4 | American Warrior | | Oil & Gas Operator | Dec 2025 |
| 5 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Jan 2026 |
| 6 | Anderson Thornto | | Oil & Gas Operator | Mar 1995 |
| 7 | Apache Drilling | | Oil Operator | Sep 1994 |
| 8 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 9 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Jan 2026 |
| 10 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 11 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 12 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 13 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 14 | Bergman Oil Co., L.C. | Wichita, KS 67202 | Oil Operator | Sep 2007 |
| 15 | Bickle Energies LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16 | Birmingham-Bartl | | Oil Operator | Aug 1994 |
| 17 | Blue Goose Drilling Company, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2025 |
| 18 | Bowie Oil LLC | | Oil Operator | Dec 2025 |
| 19 | Bowles, Jack | Edmond, OK 73083 | Oil Operator | Apr 2020 |
| 20 | Bowman Oil Company, A General Partnership | Codell, KS 67663 | Oil Operator | Dec 2025 |
| 21 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 22 | Brandt Prod Comp | | Oil & Gas Operator | Sep 1994 |
| 23 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 24 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 25 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 26 | Capco Resource Corporation | Orange,, CA 92869 | Oil Operator | Sep 2007 |
| 27 | Carl, William E. | Corpus Christi, TX 78471 | Oil Operator | Jul 1986 |
| 28 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2025 |
| 29 | Castle Resources, Inc. | Russell, KS 67665 | Oil & Gas Operator | Dec 2025 |
| 30 | Central Energy C | | Oil & Gas Operator | Jun 1994 |
| 31 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2026 |
| 32 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 33 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 34 | Cheyenne Oil Services, Inc. | Ness City, KS 67560 | Oil Operator | Nov 2023 |
| 35 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 36 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Apr 2026 |
| 37 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 38 | Coats Energy, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 39 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 40 | Columbian Servic | | Oil & Gas Operator | Nov 1993 |
| 41 | Consolidated Oil Well Services, Inc | Chanute, KS 66720 | Oil Operator | Jan 2008 |
| 42 | D K Oil Services LLC | Wellsville, KS 66092 | Oil Operator | Nov 2019 |
| 43 | Damar Resc Incor | | Oil Operator | Oct 1995 |
| 44 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Aug 2025 |
| 45 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Dec 2025 |
| 46 | Derrick-Amer Oil | | Oil Operator | Dec 1991 |
| 47 | Deutsch Oil Company | | Oil & Gas Operator | Dec 2025 |
| 48 | Diehl Oil Inc | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 49 | DK Operating Inc. | Jetmore, KS 67854 | Oil Operator | Nov 2025 |
| 50 | Eagle Petroleum, Inc. | Ellinwood, KS 67526 | Oil Operator | Dec 2025 |
| 51 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Dec 2025 |
| 52 | Edmiston Oil Com | | Oil & Gas Operator | May 1994 |
| 53 | Edwards Oil Inco | | Oil Operator | Oct 1984 |
| 54 | El-Kan Exploration | Garfield, KS 67529 | Oil Operator | Jul 1997 |
| 55 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Dec 2025 |
| 56 | Evans Energy, LLC | Mount Hope, KS 67108 | Oil & Gas Operator | Dec 2025 |
| 57 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 58 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 59 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 60 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 61 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Dec 2025 |
| 62 | H-D Oilfield Service, Inc. | Bazine, KS 67516 | Oil Operator | Dec 2025 |
| 63 | Hansen Dane G TR | | Oil Operator | Feb 1995 |
| 64 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 65 | Hembree Robert F | | Oil Operator | Dec 2009 |
| 66 | Herman L. Loeb LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2025 |
| 67 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Dec 2025 |
| 68 | Hillary Oil Comp | | Oil & Gas Operator | Apr 1991 |
| 69 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 70 | Hummon Corp | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2023 |
| 71 | Impetro Nonop LLC | | Oil Operator | Dec 2025 |
| 72 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2026 |
| 73 | Iuka-Carmi Development LLC | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 74 | Jetgo Oil Compan | | Oil & Gas Operator | Jan 1995 |
| 75 | JHS Energy, Inc | Denver, CO 80222 | Oil & Gas Operator | Dec 2025 |
| 76 | Joe Gerstner Oil, LLC | Ness City, KS 67560 | Oil Operator | Dec 2025 |
| 77 | Jones And Buck Development LLC | Sedan, KS 67361 | Oil & Gas Operator | Feb 2026 |
| 78 | JPFB Operating, LLC | Edmond, OK 73083 | Oil Operator | Dec 2019 |
| 79 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 80 | K & L Tank Truck | | Oil Operator | Aug 1987 |
| 81 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2025 |
| 82 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 83 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 84 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2026 |
| 85 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 86 | Key Gas Corp. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2018 |
| 87 | King Daniel L | | Oil Operator | May 1994 |
| 88 | Kiwanda Energy, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2008 |
| 89 | Landmark Oil & G | | Oil Operator | Nov 1987 |
| 90 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 91 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 92 | Longhorn Crude, LLC | Jetmore, KS 67854 | Oil Operator | Nov 2025 |
| 93 | Mad Operators LLC | | Oil & Gas Operator | Dec 2025 |
| 94 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 95 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 96 | Mid Continent Resources, Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2026 |
| 97 | Mid-Continent En | | Oil & Gas Operator | Nov 1995 |
| 98 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Dec 2025 |
| 99 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 100 | Monterey Production Company LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2026 |