| 1 | 3P Operations LLC | Hartford, KY 42347 | Oil Operator | Dec 2018 |
| 2 | Ashland Oil, Inc | | Oil & Gas Operator | Dec 2023 |
| 3 | Barrett Oil Co. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2023 |
| 4 | Basin Petroleum, LLC | | Oil Operator | Dec 2017 |
| 5 | Benedum - Trees Oil Co | Chicago, IL 60673 | Oil & Gas Operator | Dec 2005 |
| 6 | Big Eight DRLG Co | | Oil Operator | Dec 2023 |
| 7 | Big Man Oil Co, Inc | Owensboro, KY 42302 | Oil & Gas Operator | Dec 2023 |
| 8 | Bronco Oil Company | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2024 |
| 9 | Brown & Payne Oil DRLG, Inc | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 10 | Buford Oil, Inc | | Oil & Gas Operator | Dec 2010 |
| 11 | Buttes Res Co | | Oil Operator | Dec 2023 |
| 12 | Case Drilling Company | Philpot, KY 42366 | Oil Operator | Dec 2019 |
| 13 | Central Hydrocarbons, LLC | | Oil Operator | Dec 2013 |
| 14 | Church, Steve | Philpot, KY 42366 | Oil & Gas Operator | Dec 2022 |
| 15 | Coffman Oil & Real Estate Inc | Newport Beach, CA 92661 | Oil Operator | Dec 2022 |
| 16 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Sep 2025 |
| 17 | Core Minerals Operating Co Inc | | Oil & Gas Operator | Dec 2023 |
| 18 | Countrymark Energy Resources, LLC | MT Vernon, IN 47620 | Oil & Gas Operator | Dec 2023 |
| 19 | D C Oil, Inc | Whitesville, KY 42378 | Oil Operator | Dec 2017 |
| 20 | Del Energy, Inc | | Oil Operator | Dec 2014 |
| 21 | Diamond Endeavors Inc | | Oil Operator | Dec 2020 |
| 22 | Edgington, Jimmy C | MT Carmel, IL 62863 | Oil Operator | Dec 2021 |
| 23 | Empire Oil & Gas Co. | New Braunfels, TX 78132 | Oil & Gas Operator | Dec 2017 |
| 24 | Eqt Production Company | Pittsburg, PA 15222 | Oil & Gas Operator | Jun 2025 |
| 25 | Ewm Services, LLC | Morganfield, KY 42437 | Oil Operator | Dec 2022 |
| 26 | Farrar Oil Co | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2000 |
| 27 | Hagan, IVan - All-Kin Oil Co | | Oil Operator | Dec 2023 |
| 28 | Har-Ken Oil Co | | Oil & Gas Operator | Dec 2021 |
| 29 | Hard Rock DRLG Co | Falls Of Rough, KY 40119 | Oil Operator | Dec 2023 |
| 30 | Hickey, Jeff | Whitesville, KY 42378 | Oil Operator | Dec 2023 |
| 31 | High Splint Gas & Oil, Inc | Greenville, KY 42345 | Oil Operator | Dec 2023 |
| 32 | Hoffman George A | | Oil & Gas Operator | Dec 2022 |
| 33 | Howard, Anthony D | Philpot, KY 42366 | Oil Operator | Dec 2023 |
| 34 | Indiana Petroleum Cont | | Oil Operator | Dec 2023 |
| 35 | Jordan Oil Company, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2019 |
| 36 | Kelcas Well Services LTD | Owensboro, KY 42303 | Oil Operator | Dec 2021 |
| 37 | Last Ditch Petroleum LLC | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 38 | Lewis, Freddie | | Oil Operator | Dec 2023 |
| 39 | Lincoln Energy Corporation | Dennis, MA 02638 | Oil & Gas Operator | Dec 2021 |
| 40 | Loeb, Herman L, LLC | Lawrenceville, IL 62439 | Oil Operator | Dec 2017 |
| 41 | Magnum Oil, LLC | Hartford, KY 42347 | Oil Operator | Dec 2023 |
| 42 | Marsh Oil & Gas Field Services, Inc | Sebree, KY 42455 | Oil & Gas Operator | Dec 2023 |
| 43 | MBM Production, LLC | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2023 |
| 44 | Mills Boys Oil And Gas Leasing, LLC | | Oil Operator | Dec 2023 |
| 45 | Moran, F E Oil Co | Evansville, IN 47715 | Oil Operator | Dec 2015 |
| 46 | Nelson Ent | | Oil Operator | Dec 2016 |
| 47 | Numatex, Inc | | Oil Operator | Dec 2013 |
| 48 | Payne, Lawrence R Dba Payne DRLG Co | Philpot, KY 42366 | Oil Operator | Dec 2022 |
| 49 | Peach, Dennis L | Hartford, KY 42347 | Oil Operator | Dec 2023 |
| 50 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Apr 2025 |
| 51 | Ralph, C D | Owensboro, KY 42301 | Oil Operator | Dec 2004 |
| 52 | Ravenna Oil Co | Beattyville, KY 41311 | Oil Operator | Dec 2023 |
| 53 | Revitalize Resources Operating, Inc | Evansville, IN 47708 | Oil Operator | Dec 2023 |
| 54 | Roberts, Oliver M | | Oil & Gas Operator | Dec 2021 |
| 55 | Robinson Engineering & Oil Company, Inc | Evansville, IN 47716 | Oil & Gas Operator | Dec 2022 |
| 56 | Smith, Donald B | | Oil Operator | Dec 2020 |
| 57 | Smith, Donald B (Deceased) | Calhoun, KY 42327 | Oil Operator | Dec 2023 |
| 58 | Standard Oil Of Kentucky, Inc | | Oil Operator | Dec 2022 |
| 59 | Stanoco Oil Co | Central City, KY 42330 | Oil & Gas Operator | Dec 2021 |
| 60 | T.W. Oil LLC | Fordsville, KY 42343 | Oil & Gas Operator | Dec 2024 |
| 61 | Uebelhor, Theodore | | Oil Operator | Dec 2023 |
| 62 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 63 | Watts, J R | | Oil Operator | Dec 2009 |
| 64 | Weal DRLG Co, Inc | Madisonville, KY 42431 | Oil & Gas Operator | Dec 2023 |
| 65 | Whitney Oil & Gas Co, LLC | | Oil & Gas Operator | Dec 2017 |
| 66 | Wildcat Oil, LLC | Sebree, KY 42455 | Oil Operator | Dec 2021 |