| 1 | Akron Oil Corp | Hackensack, NJ 7602 | Oil & Gas Operator | Dec 1989 |
| 2 | Atwood Resources Inc | Houston, TX 72151-89-89 | Oil & Gas Operator | Dec 1993 |
| 3 | B & J Drilling Co | Danville, OH 43014 | Oil & Gas Operator | Dec 2023 |
| 4 | Bakerwell Inc | Killbuck, OH 44637 | Oil & Gas Operator | Dec 2024 |
| 5 | Bi Joe Development Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2023 |
| 6 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2024 |
| 7 | Cgas Exploration | Charleston, WV 25301 | Oil & Gas Operator | Dec 2006 |
| 8 | Columbia Gas Transmission, LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2021 |
| 9 | Coshocton Pipe Co | Columbus, OH 43229 | Oil & Gas Operator | Dec 1989 |
| 10 | Cyclops Corp | Pittsburgh, PA 15228 | Oil & Gas Operator | Dec 1992 |
| 11 | Dalton & Hanna LTD | Wooster, OH 44691 | Oil & Gas Operator | Dec 2018 |
| 12 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 13 | Devore Anthony D | Gambier, OH 43022 | Oil & Gas Operator | Dec 2010 |
| 14 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | May 2025 |
| 15 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 16 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 17 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 18 | Fishburn Producing Inc | Marengo, OH 43334 | Oil & Gas Operator | Dec 2024 |
| 19 | Garver Oil LLC | Mansfield, OH 44907 | Oil & Gas Operator | Dec 2022 |
| 20 | Geopetro Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 1994 |
| 21 | Geopetro LLC | Worthington, OH 43085-2316 | Oil & Gas Operator | Mar 2025 |
| 22 | Guardian Management Inc | Marion, OH 43302 | Oil & Gas Operator | Dec 1997 |
| 23 | H I Smith Oil & Gas Inc | Holmesville, OH 44633 | Oil & Gas Operator | Dec 2024 |
| 24 | Houghton Investments LLC | Columbus, OH 43235 | Oil & Gas Operator | Dec 2024 |
| 25 | Jefferson Oil & Gas Company | Pickerington, OH 43147 | Oil & Gas Operator | Dec 2024 |
| 26 | Jerry Moore Inc | Hartville, OH 44632 | Oil & Gas Operator | Dec 2023 |
| 27 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 28 | Ludco Inc | Caledonia, OH 43314 | Oil & Gas Operator | Dec 1986 |
| 29 | Ludwig Cleo R | Caledonia, OH 43314 | Oil & Gas Operator | Dec 1987 |
| 30 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 31 | M S Exploration Inc | Lexington, OH 44904-9510-9510 | Oil & Gas Operator | Dec 1999 |
| 32 | Maram Energy Inc | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 2024 |
| 33 | Mason Drilling Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2022 |
| 34 | Michigan Geosearch Inc | Lansing, MI 48917 | Oil & Gas Operator | Jan 2025 |
| 35 | Midcoast Resources Co | Tulsa, OK 74136 | Oil & Gas Operator | Dec 1992 |
| 36 | Nethers Gary L | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 37 | Ohio Production Corp | Westerville, OH 43081 | Oil & Gas Operator | Dec 2001 |
| 38 | Oxford Oil | Zanesville, OH 43702-0910-0910 | Oil & Gas Operator | Dec 2012 |
| 39 | R C Poling Co Inc | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 40 | Range Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2000 |
| 41 | Range Resources Appalachia LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Mar 2025 |
| 42 | River Valley Energy Inc | Little Hocking, OH 45742 | Oil & Gas Operator | Dec 2024 |
| 43 | Roman Well Services Inc | Lakeville, OH 44638 | Oil & Gas Operator | Dec 2023 |
| 44 | Roscoe Gas & Oil Co | Dover, OH 44622 | Oil & Gas Operator | Dec 1991 |
| 45 | Sound Energy Co Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 46 | Stocker & Sitler Inc | Columbus, OH 43214-0981-0981 | Oil & Gas Operator | Dec 2002 |
| 47 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |