| 1 | Ab Resources Oh LLC | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2010 |
| 2 | Akron Oil Corp | Hackensack, NJ 07602 | Oil & Gas Operator | Dec 1989 |
| 3 | Altheirs Oil, Inc. | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |
| 4 | Am-Tek Oil Inc | Spokane, WA 99201 | Oil & Gas Operator | Dec 2023 |
| 5 | Atlantic Energy Corp Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1991 |
| 6 | Bancequity Petroleum Corporation | Macedonia, OH 44056 | Oil & Gas Operator | Dec 2024 |
| 7 | Belden & Blake Corporation | North Canton, OH 44720 | Oil & Gas Operator | Dec 2016 |
| 8 | Benatty Corp., The | Cambridge, OH 43725-1002 | Oil & Gas Operator | Dec 1996 |
| 9 | Blauser Energy Corporation | Marietta, OH 45750-6964 | Oil & Gas Operator | Dec 2018 |
| 10 | Chesapeake Appalachia, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 11 | Columbia Gas Transmission, LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2021 |
| 12 | Consolidated Res Of Amer | Cincinnati, OH 45208 | Oil & Gas Operator | Dec 1996 |
| 13 | Cortland Energy Co Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 2024 |
| 14 | Eastern States Oil & Gas, Inc. | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2020 |
| 15 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 16 | Envirocorp Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1990 |
| 17 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 18 | Fredebaugh Well DRLG Co | Grand River, OH 44045 | Oil & Gas Operator | Dec 1991 |
| 19 | Grim Paul A | Logan, OH 43138-9445 | Oil & Gas Operator | Dec 2020 |
| 20 | Heinrich Enterprises Inc Dba Washington Operations | Reno, OH 45773 | Oil & Gas Operator | Dec 2024 |
| 21 | Hocking Hills Energy And Well Service LLC | Logan, OH 43138-8497 | Oil & Gas Operator | Dec 2024 |
| 22 | Hopco Resources Inc | Columbus, OH 43065 | Oil & Gas Operator | Dec 2024 |
| 23 | Houghton Investments LLC | Columbus, OH 43235 | Oil & Gas Operator | Dec 2024 |
| 24 | Inland Drilling Co Inc | Garretsville, OH 44231 | Oil & Gas Operator | Dec 1992 |
| 25 | J D Drilling Company | Basehor, KS 66007 | Oil & Gas Operator | Dec 2023 |
| 26 | Kastle Resources Enterprises Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 27 | Kenoil LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 28 | Kilbarger Investments Inc | Logan, OH 43138 | Oil & Gas Operator | Dec 2024 |
| 29 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 30 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 31 | Mallett Luke-Dba Mallett Energy | New Concord, OH 43762 | Oil & Gas Operator | Dec 2016 |
| 32 | MFC Drilling Inc | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2024 |
| 33 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Sep 2025 |
| 34 | Nuttco Oil & Gas | Corning, OH 43730 | Oil & Gas Operator | Dec 2010 |
| 35 | Oil Enterprises | Logan, OH 43138 | Oil & Gas Operator | Dec 2024 |
| 36 | Pelican Producing Inc | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1996 |
| 37 | Progressive Oil & Gas | Moxahala, OH 43761 | Oil & Gas Operator | Dec 2024 |
| 38 | Quaker State Oil Ref Corp | North Canton, OH 44720-1541 | Oil & Gas Operator | Dec 1994 |
| 39 | R C Poling Co Inc | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 40 | Red Bird Producing Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 41 | River Valley Energy Inc | Little Hocking, OH 45742 | Oil & Gas Operator | Dec 2024 |
| 42 | RPJ Fund Management Inc | St. Paul, MN 55101 | Oil & Gas Operator | Dec 1991 |
| 43 | Sabre Energy Corporation | Lore City,, OH 43755 | Oil & Gas Operator | Dec 2017 |
| 44 | Stocker & Sitler Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 2002 |
| 45 | Stonebridge Operating Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 46 | Stright Roger | Amesville, OH 45711 | Oil & Gas Operator | Dec 2016 |
| 47 | Tansky J/Tansky Oil Prod | Logan, OH 43138 | Oil & Gas Operator | Dec 1997 |
| 48 | Witco Corporation | Newark, OH 43055 | Oil & Gas Operator | Dec 1995 |