| 1 | A & A Producers & Operators/Energy Prop. | | Oil & Gas Operator | Dec 1996 |
| 2 | A V Company | Burton, WV 26562-0000 | Gas Operator | Dec 2021 |
| 3 | Abarta Oil & Gas Co., Inc. | Pittsburgh, PA 15238 | Oil & Gas Operator | Dec 2020 |
| 4 | Abarta Oil & Gas Co., LLC | | Oil & Gas Operator | Dec 2021 |
| 5 | Acker, H. E. Well Service | | Oil & Gas Operator | Dec 2007 |
| 6 | Adams Energy LLC | | Oil & Gas Operator | Dec 2021 |
| 7 | Addington Exploration, LLC | | Oil & Gas Operator | Dec 2006 |
| 8 | Adena Petroleum, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Dec 2021 |
| 9 | Adkins, Franklin | Ona, WV 25545-0070 | Oil & Gas Operator | Dec 2021 |
| 10 | Adkins, Teddy D. | | Oil & Gas Operator | Dec 2020 |
| 11 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 12 | Alan Gable Oil Development Company | | Oil & Gas Operator | Dec 2021 |
| 13 | Alexander Production Company | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2021 |
| 14 | Alfred, Dewayne L | Weston, WV 26542-0478 | Oil & Gas Operator | Dec 1996 |
| 15 | Alliance Petroleum Co., LLC | | Oil & Gas Operator | Dec 2021 |
| 16 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 17 | Allied Energy Corporation | | Oil & Gas Operator | Aug 2025 |
| 18 | Allied Energy, Inc. | Saratoga, CA 95070 | Oil & Gas Operator | Dec 2021 |
| 19 | Allstate Energy Corp | Smithville, WV 26178 | Oil & Gas Operator | Dec 2021 |
| 20 | Alpha Gas Corporation | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2007 |
| 21 | Alquip Limited Liability Company | Buckhannon, WV 26201-2049 | Gas Operator | Dec 2021 |
| 22 | Altheirs Oil, Inc. | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |
| 23 | Aman, David W | Camden, WV 26338-0000 | Gas Operator | Dec 2021 |
| 24 | Amarex Inc | | Oil & Gas Operator | Dec 1996 |
| 25 | American Energy Corporation | Bealsville, OH 43716 | Oil & Gas Operator | Dec 2019 |
| 26 | American Energy Holdings, LLC | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2021 |
| 27 | Amtech Energy Inc | Plymouth, IL 62367-1016 | Oil & Gas Operator | Dec 2021 |
| 28 | Anderson, Allen M | Fleming, OH 45729 | Oil & Gas Operator | Dec 2023 |
| 29 | Anderson, E D | Cisco, TX 76437 | Oil & Gas Operator | Nov 2009 |
| 30 | Angerman Associates Inc | | Oil & Gas Operator | Mar 1998 |
| 31 | Anja Resources | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 32 | Annulus Energy LLC | | Gas Operator | Dec 2021 |
| 33 | Antero Resources Bluestone LLC | | Gas Operator | Dec 2013 |
| 34 | Antero Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 35 | Anvil Oil Co., Inc. | Bartlesville, OK 74003-5030 | Oil & Gas Operator | Dec 2008 |
| 36 | Apollo Petroleum Corporation | | Oil & Gas Operator | Dec 2012 |
| 37 | Appalachian Energy Inc | Pittsburgh, PA 15220 | Gas Operator | Dec 2008 |
| 38 | Applied Mechanics Corp. | Bridgeport, WV 26330-4609 | Oil & Gas Operator | Dec 2021 |
| 39 | Arabie, Inc. | Lake Charles, LA 70605 | Oil & Gas Operator | Apr 2025 |
| 40 | Arbor Petroleum Corporation | Oklahoma City, OK 73102-4003 | Oil & Gas Operator | Mar 2011 |
| 41 | Ardent Resources, Inc. | Upper St Clair, PA 15241-1633 | Oil & Gas Operator | Dec 2018 |
| 42 | Aries Petroleum Corp. | Big Springs, WV 26137 | Oil & Gas Operator | Dec 2021 |
| 43 | Arsenal Resources LLC | Wexford, PA 15090 | Oil & Gas Operator | Dec 2021 |
| 44 | Ascent Resources - Marcellus, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2021 |
| 45 | Ashland Exploration Properties Inc | | Gas Operator | Dec 1996 |
| 46 | Asseff, George S Oil & Gas Company | | Oil & Gas Operator | Dec 2008 |
| 47 | Atlas Energy Corp | | Oil & Gas Operator | Nov 2005 |