| 1 | Haddad & Brooks Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2018 |
| 2 | Hager Gas Co | Danville, WV 25053 | Gas Operator | Dec 2010 |
| 3 | Hall Drilling, LLC | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2021 |
| 4 | Hall, James H ( Trust) | | Gas Operator | Dec 2007 |
| 5 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 6 | Hard Rock Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 7 | Hardee Petroleum Co., A General PTSHP. | | Oil & Gas Operator | Dec 2013 |
| 8 | Harper Crosby Holdings, LLC | Weston, WV 26452 | Oil & Gas Operator | Dec 2025 |
| 9 | Hartman Oil And Gas Company | | Oil Operator | Dec 1998 |
| 10 | Haught Energy Corporation | Parkersburg, WV 26101 | Oil & Gas Operator | Dec 2021 |
| 11 | Haught, Glenn L. & Sons | | Oil & Gas Operator | Dec 1997 |
| 12 | Haught, Inc. | Smithville, WV 26178 | Oil & Gas Operator | Nov 2021 |
| 13 | Hayden Harper Energy Ka, LLC | Charlotte, NC 28203-4173 | Oil & Gas Operator | Dec 2021 |
| 14 | Heinrich Enterprises, Inc. | Reno, OH 45773-0305 | Oil & Gas Operator | Dec 2021 |
| 15 | HG Energy II Appalachia, LLC | | Oil & Gas Operator | Mar 2022 |
| 16 | HG Energy LLC | Parkersburg, WV 26101 | Oil & Gas Operator | Dec 2021 |
| 17 | Highland Resources, Inc. | | Oil & Gas Operator | Dec 2004 |
| 18 | Hildreth, Roy G & Son Inc | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 19 | Hildreth, Va Roy | | Oil & Gas Operator | Dec 1996 |
| 20 | Hope Gas, Inc. | Richmond, VA 23261 | Oil & Gas Operator | Dec 2010 |
| 21 | Horizon Energy Corporation | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 22 | Horner Oil And Gas Production, Inc. | Cameron, WV 26033 | Oil & Gas Operator | Dec 2021 |
| 23 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 24 | Howard, Lorna Agent | | Oil & Gas Operator | Dec 2021 |
| 25 | Hufco, Incorporated | | Oil & Gas Operator | Dec 2020 |
| 26 | Hughes River Oil & Gas Company | Walker, WV 26180-0000 | Oil & Gas Operator | Dec 2021 |
| 27 | Huntington Midway Incorporated | Huntington, WV 25709 | Oil & Gas Operator | Dec 2021 |
| 28 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 29 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |