| 1 | 4 R Investment Co | Erie, PA 16505-4514 | Gas Operator | Dec 2006 |
| 2 | A & S Prod Inc | Endeavor, PA 16322-0189 | Oil & Gas Operator | Dec 2024 |
| 3 | Ab Resources Pa LLC | Brecksville, OH 44141-3296 | Oil & Gas Operator | Dec 2011 |
| 4 | Abarta Oil & Gas Co., Inc. | Pittsburgh, PA 15238 | Oil & Gas Operator | Dec 2020 |
| 5 | Abbott Donald Jay | Edinboro, PA 16412-4129 | Gas Operator | Dec 2018 |
| 6 | Actagon Corp | Monroeville, PA 15146 | Oil & Gas Operator | Dec 2024 |
| 7 | Add Energy Co | Butler, PA 16002-0471 | Gas Operator | Dec 2020 |
| 8 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 9 | Advanced Petro Corp | Hamburg, NY 14075-5003 | Oil & Gas Operator | Dec 1992 |
| 10 | Afco Energy Prod Co | Indiana, PA 15701-0538 | Oil & Gas Operator | Dec 2019 |
| 11 | Aiello Bros Oil & Gas Inc | Bradford, PA 16701-2925 | Oil & Gas Operator | Dec 2024 |
| 12 | Airdale Oil & Gas LLC | Oil City, PA 16301-3771 | Oil & Gas Operator | Dec 2024 |
| 13 | Alco Ind | Valley Forge, PA 19482-0937 | Gas Operator | Dec 2024 |
| 14 | Alcove Investments | Apollo, PA 15613-9720 | Oil & Gas Operator | Dec 2024 |
| 15 | Alice & Andrew & George Hazer | Girard, PA 16417-9801 | Gas Operator | Dec 2024 |
| 16 | Allegheny Enterprises Inc | Corsica, PA 15829-3833 | Oil & Gas Operator | Dec 2018 |
| 17 | Allegheny Natural Resources Inc | Gibsonia, PA 15044-8055 | Gas Operator | Dec 2019 |
| 18 | Allen Energy LLC | Cochranton, PA 16314-6214 | Oil & Gas Operator | Dec 2024 |
| 19 | Allshouse Terrence L Jr | Grand Valley, PA 16420-1930 | Oil & Gas Operator | Dec 2024 |
| 20 | Alma Gas Co Inc | Alma, NY 14708 | Gas Operator | Dec 2024 |
| 21 | Alpha Shale Res LP | Canonsburg, PA 15317-9554 | Gas Operator | Aug 2017 |
| 22 | Amer Exploration Co | Plymouth Meeting, PA 19462-1640 | Oil & Gas Operator | Dec 2008 |
| 23 | Amer Natural Resources LLC | Rural Valley, PA 16249-0306 | Oil & Gas Operator | Dec 2018 |
| 24 | Amer Oil & Gas LLC | MT Morris, PA 15349 | Oil & Gas Operator | Jun 2025 |
| 25 | Ams Energy LLC | Herman, PA 16039-0156 | Oil & Gas Operator | Jun 2025 |
| 26 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 27 | Ancient Sands Inc | Kittanning, PA 16201-0916 | Oil & Gas Operator | Dec 2008 |
| 28 | Anderson Energy SVC LLC | Clarendon, PA 16313-4238 | Oil & Gas Operator | Dec 2024 |
| 29 | Anegada Energy LLC | Canonsburg, PA 15317-0400 | Gas Operator | Jun 2025 |
| 30 | Angerman Assoc Inc | Pittsburgh, PA 15238-1359 | Oil & Gas Operator | Dec 1998 |
| 31 | Antero Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 32 | Apex Energy (Pa) LLC | Canonsburg, PA 15317-6523 | Gas Operator | May 2025 |
| 33 | Apex Resources Inc | Allison Park, PA 15101-3838 | Oil & Gas Operator | Dec 1993 |
| 34 | Apollo Gas Co | Pittsburgh, PA 15236-1435 | Gas Operator | Dec 1991 |
| 35 | Apollo Resources LLC | Vintondale, PA 15961-0222 | Oil & Gas Operator | Jun 2025 |
| 36 | Appalachian Energy Inc | Pittsburgh, PA 15220 | Gas Operator | Dec 2008 |
| 37 | Appalachian Exploration Corp | McMurray, PA 15317-3452 | Gas Operator | Dec 1995 |
| 38 | Ardale Natural Gas LLC | Ford City, PA 16226-7003 | Gas Operator | Dec 2023 |
| 39 | Ardent Resources, Inc. | Upper St Clair, PA 15241-1633 | Oil & Gas Operator | Dec 2018 |
| 40 | Arg Resources Inc | Kane, PA 16735-6405 | Oil & Gas Operator | Dec 2019 |
| 41 | Ark Resources Inc | Indiana, PA 15701-0069 | Oil & Gas Operator | Dec 2014 |
| 42 | Armac Resources | Washington, PA 15301-0558 | Oil & Gas Operator | Dec 2011 |
| 43 | Armac Resources LLC | Washington, PA 15301-0558 | Oil & Gas Operator | Dec 2024 |
| 44 | Armstrong Gas Co LLC | Kittanning, PA 16201-2269 | Oil & Gas Operator | Dec 2018 |
| 45 | Arrington Oil&Gas Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 46 | Arrowhead Gas Producers Inc | Olean, NY 14760-3355 | Gas Operator | Dec 1992 |
| 47 | Ashtola Prod Co | Valley Forge, PA 19482-0858 | Gas Operator | Dec 1986 |
| 48 | Atlas Resources Inc | Coraopolis, PA 15108-0611 | Oil & Gas Operator | Dec 2007 |
| 49 | Atlas Resources LLC | Pittsburgh, PA 15275-1033 | Oil & Gas Operator | Jun 2018 |
| 50 | Atwood Energy Inc | Port Washington, OH 43837-9214 | Oil & Gas Operator | Dec 1993 |
| 51 | Autumn Ridge Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2021 |
| 52 | Aw Tipka Oil & Gas Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 53 | Azco Opr Co | Phoenix, AZ 85076-0535 | Oil & Gas Operator | Dec 2001 |
| 54 | B & B Oil & Gas Prod Co | Dayton, PA 16222-5722 | Oil & Gas Operator | Dec 2019 |
| 55 | B & B Resources | Tulsa, OK 74136-2655 | Oil & Gas Operator | Dec 2024 |
| 56 | B & R Resources, LLC | Solon, OH 44139-2360 | Oil & Gas Operator | Dec 2014 |
| 57 | B F Energies LLC | West Newton, PA 15089-1357 | Gas Operator | Dec 2024 |
| 58 | Baker Gas Inc | Worthington, PA 16262-0739 | Gas Operator | Jun 2025 |
| 59 | Bald Hill Oil | Sheffield, PA 16347-0274 | Oil & Gas Operator | Dec 2024 |
| 60 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 61 | Barnes Resources | Kane, PA 16735-0441 | Oil & Gas Operator | Dec 2015 |
| 62 | Baron Crest Energy Co | Apollo, PA 15613-8912 | Oil & Gas Operator | Dec 2007 |
| 63 | Baron Group Inc | Indianola, PA 15051-0563 | Oil & Gas Operator | Dec 2020 |
| 64 | Bartlett Brenda S & Bartlett Norman C | North East, PA 16428-5547 | Gas Operator | Dec 2024 |
| 65 | Bartley Oil & Gas Co LLC | Emlenton, PA 16373 | Oil Operator | Dec 2024 |
| 66 | Batista Mark F | Kane, PA 16735 | Oil Operator | Dec 2024 |
| 67 | Batista Oil SVC | Kane, PA 16735-9003 | Oil Operator | Dec 2008 |
| 68 | BCD Prop Inc | Waterford, PA 16441-0338 | Oil & Gas Operator | Dec 2023 |
| 69 | BDH Oil Inc | Bradford, PA 16701 | Oil Operator | Dec 2006 |
| 70 | Bear Lake Energy | Sugar Grove, PA 16350-2104 | Gas Operator | Dec 2024 |
| 71 | Bearcat Oil Co | Sugar Grove, PA 16350-0527 | Oil & Gas Operator | Dec 2008 |
| 72 | Bearcat Oil Co LLC | Sugar Grove, PA 16350-4032 | Oil & Gas Operator | Dec 2024 |
| 73 | Beck George N | Murrysville, PA 15668-9635 | Oil & Gas Operator | Dec 2016 |
| 74 | Beck James L | Pleasantville, PA 16341-2718 | Oil Operator | Dec 2004 |
| 75 | Beech Resources LLC | Williamsport, PA 17701-6209 | Gas Operator | Jun 2025 |
| 76 | Belden & Blake Corporation | North Canton, OH 44720 | Oil & Gas Operator | Dec 2016 |
| 77 | Benco Energy Inc | Tionesta, PA 16353-5851 | Oil & Gas Operator | Dec 2002 |
| 78 | Benedum Interests | Pittsburgh, PA 15222-1794 | Gas Operator | Dec 2003 |
| 79 | Benson Energy LLC | Smethport, PA 16749-5316 | Oil & Gas Operator | Dec 2024 |
| 80 | Berea Oil & Gas Corp | Buffalo, NY 14202 | Oil & Gas Operator | Dec 2002 |
| 81 | Best John B | Franklin, PA 16323-8115 | Oil & Gas Operator | Dec 2018 |
| 82 | BF Adventures LLC | Warren, PA 16365-8306 | Oil & Gas Operator | Dec 2024 |
| 83 | BG Production, LLC | Denver, NC 28037-8088 | Oil & Gas Operator | Dec 2021 |
| 84 | Biblical Life Inst | Freeport, PA 16229 | Gas Operator | Dec 2024 |
| 85 | Big Dog Energy LLC | Sewickley, PA 15143-8782 | Gas Operator | Jun 2025 |
| 86 | Bittinger Drilling L A Bittinger Dba | Apollo, PA 15613-9720 | Oil & Gas Operator | Dec 2024 |
| 87 | BJS LLC | Warren, PA 16365-2415 | Oil & Gas Operator | Dec 2022 |
| 88 | BKV Opr LLC | Tunkhannock, PA 18657 | Gas Operator | Jun 2025 |
| 89 | Blackhawk Energy LLC | Greenville, KY 42345 | Oil & Gas Operator | Jan 2024 |
| 90 | Blackhill Energy LLC | Canonsburg, PA 15317 | Gas Operator | Jun 2025 |
| 91 | Blair Harold L | Petrolia, PA 16050-1809 | Oil & Gas Operator | Dec 2020 |
| 92 | Blair Raymond L SR | Kittanning, PA 16201-4957 | Oil & Gas Operator | Dec 2024 |
| 93 | Blaze Oil & Gas Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 94 | Blazer Energy Corp. | Alexandria, VA 22314 | Oil & Gas Operator | Dec 2014 |
| 95 | BLS Oil & Gas LLC | Dubois, PA 15801-0039 | Oil & Gas Operator | Dec 2024 |
| 96 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 97 | BMW Energy Inc | Smicksburg, PA 16256-1631 | Gas Operator | Dec 2024 |
| 98 | Bobcat Prod Corp | Bradford, PA 16701-3263 | Oil & Gas Operator | Dec 2024 |
| 99 | Bobcat Well & Pipeline LLC | Canfield, OH 44406 | Oil & Gas Operator | Dec 2021 |
| 100 | Bocor Holdings LLC | North Canton, OH 44720 | Oil & Gas Operator | Dec 2024 |