| 4701 | MAC 2H | Greene County, PA | Gas Property | Sep 2024 |
| 4702 | MAC 4H | Greene County, PA | Gas Property | Sep 2024 |
| 4703 | MAC 6H | Greene County, PA | Gas Property | Sep 2024 |
| 4704 | MAC 8H | Greene County, PA | Gas Property | Sep 2024 |
| 4705 | MAC 9 | Greene County, PA | Gas Property | Sep 2024 |
| 4706 | MAC NORTH | Lycoming County, PA | Gas Property | Sep 2024 |
| 4707 | MACAR | Fayette County, PA | Gas Property | Dec 2023 |
| 4708 | MACGEORGE WEST 1 5H | Susquehanna County, PA | Gas Property | Sep 2024 |
| 4709 | MACINTYRE UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 4710 | MACK | Greene County, PA | Oil & Gas Property | Sep 2024 |
| 4711 | MACK | Elk County, PA | Oil & Gas Property | Dec 2018 |
| 4712 | MACK | Erie County, PA | Gas Property | Dec 1994 |
| 4713 | MACKEY, R | Susquehanna County, PA | Gas Property | Sep 2024 |
| 4714 | MACKRELL UNIT | Butler County, PA | Gas Property | Sep 2024 |
| 4715 | MACLEAN (M-618) | Clearfield County, PA | Gas Property | Dec 2023 |
| 4716 | MACLEOD/NORRIS | Armstrong County, PA | Gas Property | Dec 2023 |
| 4717 | MAD DOG 2020 | Washington County, PA | Gas Property | Sep 2024 |
| 4718 | MAD DOG BRA | Bradford County, PA | Gas Property | Sep 2024 |
| 4719 | MADALYN C. HEILMAN | Armstrong County, PA | Gas Property | Dec 2023 |
| 4720 | MADDEN | Bradford County, PA | Gas Property | Sep 2024 |
| 4721 | MADIGAN FARMS UNIT A 1H | Bradford County, PA | Gas Property | Sep 2024 |
| 4722 | MADISON | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 4723 | MAGA BEA | Beaver County, PA | Gas Property | Sep 2024 |
| 4724 | MAGAGNOTTI | Armstrong County, PA | Gas Property | Dec 2023 |
| 4725 | MAGGIE | Bradford County, PA | Gas Property | Sep 2024 |
| 4726 | MAGGIE SHROKMAN | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4727 | MAGILL UNIT | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 4728 | MAGNUM | Greene County, PA | Gas Property | Sep 2024 |
| 4729 | MAHAFFEY | Clearfield County, PA | Oil & Gas Property | Dec 2023 |
| 4730 | MAHAN | Warren County, PA | Oil Property | Dec 2016 |
| 4731 | MAHLE | Clarion County, PA | Oil & Gas Property | Dec 2021 |
| 4732 | MAHLE | Venango County, PA | Gas Property | Dec 2023 |
| 4733 | MAHLON J BYLER | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4734 | MAHONING | Lawrence County, PA | Oil & Gas Property | Sep 2024 |
| 4735 | MAHONING | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 4736 | MAHONING AMBROSIA | Lawrence County, PA | Gas Property | Sep 2024 |
| 4737 | MAHONING VALLEY MILLING CO | Jefferson County, PA | Gas Property | Dec 2023 |
| 4738 | MAHONING YEO | Lawrence County, PA | Oil & Gas Property | Sep 2024 |
| 4739 | MAKAYLA | Bradford County, PA | Gas Property | Sep 2024 |
| 4740 | MAKOSKY T | Susquehanna County, PA | Gas Property | Sep 2024 |
| 4741 | MAKUCH | Venango County, PA | Oil Property | Dec 2021 |
| 4742 | MALACHOSKY | Washington County, PA | Gas Property | Sep 2024 |
| 4743 | MALEK | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 4744 | MALEK | Warren County, PA | Gas Property | Dec 2023 |
| 4745 | MALINKY | Fayette County, PA | Gas Property | Dec 2023 |
| 4746 | MALINKY UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 4747 | MALJOVEC | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4748 | MALLORY | Lycoming County, PA | Gas Property | Sep 2024 |
| 4749 | MALLORY | Venango County, PA | Gas Property | Dec 2023 |
| 4750 | MALLORY | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4751 | MALLORY 1 | McKean County, PA | Oil & Gas Property | Dec 2022 |
| 4752 | MALLORY LOT | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4753 | MALLORY W | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4754 | MALLORY WARRANT 433 | McKean County, PA | Oil & Gas Property | Dec 2022 |
| 4755 | MALLORY-INTERSTATE | McKean County, PA | Oil & Gas Property | Dec 2022 |
| 4756 | MALLOY | Clearfield County, PA | Gas Property | Dec 2023 |
| 4757 | MAMMA BEAR | Washington County, PA | Gas Property | Sep 2024 |
| 4758 | MAMMOTH PARK 0 | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 4759 | MAMONT SOUTH | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4760 | MANACK | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 4761 | MANAHAN | Bradford County, PA | Gas Property | Sep 2024 |
| 4762 | MANEVAL 296 | Tioga County, PA | Gas Property | Sep 2024 |
| 4763 | MANEY | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 4764 | MANGINI S&M | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4765 | MANNING | Sullivan County, PA | Gas Property | Sep 2024 |
| 4766 | MANNING UNIT REIMILLER 1 MANNING | Wyoming County, PA | Gas Property | Sep 2024 |
| 4767 | MANOR | Indiana County, PA | Gas Property | Dec 2023 |
| 4768 | MANOR DEVELOPMENT | Armstrong County, PA | Gas Property | Dec 2023 |
| 4769 | MANOR REAL EST | McKean County, PA | Gas Property | Dec 2023 |
| 4770 | MANOR REAL ESTATE | Indiana County, PA | Gas Property | Dec 2023 |
| 4771 | MANOR REAL ESTATE | Armstrong County, PA | Gas Property | Dec 2023 |
| 4772 | MANSFIELD | Armstrong County, PA | Gas Property | Dec 2023 |
| 4773 | MANTZ | McKean County, PA | Gas Property | Dec 2023 |
| 4774 | MANUEL UNIT | Butler County, PA | Gas Property | Sep 2024 |
| 4775 | MANUFACTURERS GAS | Elk County, PA | Gas Property | Dec 2023 |
| 4776 | MANULIFE INS CO 3 | McKean County, PA | Gas Property | Dec 2023 |
| 4777 | MANZER A 4 | Susquehanna County, PA | Gas Property | Sep 2024 |
| 4778 | MARBACH | Indiana County, PA | Gas Property | Dec 2023 |
| 4779 | MARBAKER | Susquehanna County, PA | Gas Property | Oct 2023 |
| 4780 | MARBURGER FARM DAIRY | Butler County, PA | Gas Property | Sep 2024 |
| 4781 | MARCHAND 3 | Indiana County, PA | Gas Property | Sep 2024 |
| 4782 | MARCHEZAK | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 4783 | MARCHEZAK | Washington County, PA | Gas Property | Dec 2023 |
| 4784 | MARCHINI ZINGIESER | Bradford County, PA | Gas Property | Sep 2024 |
| 4785 | MARCHO W&M | Susquehanna County, PA | Gas Property | Sep 2024 |
| 4786 | MARCO | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4787 | MARCO | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4788 | MARCUCCI JONES | Bradford County, PA | Gas Property | Sep 2024 |
| 4789 | MARGARET | Indiana County, PA | Gas Property | Dec 2023 |
| 4790 | MARGARET | Crawford County, PA | Gas Property | Dec 2023 |
| 4791 | MARGARET | Butler County, PA | Gas Property | Dec 2023 |
| 4792 | MARGARET | Armstrong County, PA | Gas Property | Dec 2023 |
| 4793 | MARGARET | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4794 | MARGARET E BECK | Indiana County, PA | Gas Property | Dec 2023 |
| 4795 | MARGARET E SHOUP | Greene County, PA | Gas Property | Dec 2022 |
| 4796 | MARGARET HAMILTON | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 4797 | MARGARET L. GIBSON | Indiana County, PA | Gas Property | Dec 2023 |
| 4798 | MARGARIA PAUL UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 4799 | MARGARIA RAYMOND UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 4800 | MARGERY M STEPHENSON | Indiana County, PA | Gas Property | Dec 2023 |