| 5601 | OLD TOWN BEAGLE CLUB | Clearfield County, PA | Gas Property | Dec 2024 |
| 5602 | OLER THOMPSON B | Clearfield County, PA | Gas Property | Dec 2024 |
| 5603 | OLEXA | Fayette County, PA | Oil & Gas Property | Feb 2025 |
| 5604 | OLGA H WEBER | Jefferson County, PA | Gas Property | Dec 2024 |
| 5605 | OLIVE M MARBURGER LIVING TRUST | Butler County, PA | Oil & Gas Property | Feb 2025 |
| 5606 | OLIVER | Fayette County, PA | Gas Property | Dec 2024 |
| 5607 | OLIVER | Allegheny County, PA | Gas Property | Feb 2025 |
| 5608 | OLIVER | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 5609 | OLIVER EAST MON23H1 | Allegheny County, PA | Gas Property | Feb 2025 |
| 5610 | OLIVER FARM WARRANT 4004 | McKean County, PA | Oil & Gas Property | Dec 2009 |
| 5611 | OLIVER UNIT | Susquehanna County, PA | Gas Property | Feb 2025 |
| 5612 | OLIVER W PROPER | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 5613 | OLLIE MORRIS | Jefferson County, PA | Gas Property | Dec 2024 |
| 5614 | OLSON | Warren County, PA | Gas Property | Dec 2024 |
| 5615 | OLSON 02 101 0 | Tioga County, PA | Gas Property | Feb 2025 |
| 5616 | OLSON ROBERT & MARGARET 3864 | Jefferson County, PA | Gas Property | Dec 2024 |
| 5617 | OLSON UNIT | Venango County, PA | Gas Property | Dec 2024 |
| 5618 | OLYMPIC LAKE ESTATES 07 083 0 | Susquehanna County, PA | Gas Property | Feb 2025 |
| 5619 | OMASTA | Westmoreland County, PA | Gas Property | Dec 2000 |
| 5620 | OMR (02-188 | Tioga County, PA | Gas Property | Feb 2025 |
| 5621 | ONEIL | Warren County, PA | Oil Property | Dec 2024 |
| 5622 | ONEILL | Warren County, PA | Oil Property | Dec 2024 |
| 5623 | ONIFRO O | McKean County, PA | Oil & Gas Property | Dec 2005 |
| 5624 | OPACIC | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 5625 | ORENCHUK RUSSELL 11890 | Washington County, PA | Gas Property | Feb 2025 |
| 5626 | ORIN LEE NEAL | Jefferson County, PA | Gas Property | Dec 2024 |
| 5627 | ORIS | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 5628 | ORIS M. SCHRECENGOST | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 5629 | ORLANDO HARMAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 5630 | ORLOSKY | Mercer County, PA | Gas Property | Dec 2024 |
| 5631 | ORMSBY DEVONIAN | McKean County, PA | Gas Property | Dec 1993 |
| 5632 | OROURKE 05 046 0 | Bradford County, PA | Gas Property | Feb 2025 |
| 5633 | ORR 1 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5634 | ORR 2 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5635 | ORR 3 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5636 | ORTH B | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5637 | ORTHODOX | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 5638 | ORTON | Washington County, PA | Oil & Gas Property | Apr 2023 |
| 5639 | ORTON | Erie County, PA | Gas Property | Dec 1986 |
| 5640 | ORVILLE | Indiana County, PA | Gas Property | Dec 2024 |
| 5641 | ORVILLE M WATSON | Indiana County, PA | Gas Property | Dec 2024 |
| 5642 | ORVILLE W. PRESCOTT | Clearfield County, PA | Gas Property | Dec 2008 |
| 5643 | ORWICK | Clearfield County, PA | Gas Property | Dec 2024 |
| 5644 | OS BURNHAM | Crawford County, PA | Gas Property | Dec 2017 |
| 5645 | OSCAR B GRANT | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 5646 | OSCAR C BENSON | Jefferson County, PA | Gas Property | Dec 2024 |
| 5647 | OSCAR EARL HOUSER | Armstrong County, PA | Gas Property | Dec 2024 |
| 5648 | OSCAR J DRESSLER | Clearfield County, PA | Gas Property | Dec 2024 |
| 5649 | OSLEY | Fayette County, PA | Gas Property | Dec 2024 |
| 5650 | OSSESIA | Clarion County, PA | Gas Property | Dec 2024 |
| 5651 | OSSESSIA | Clarion County, PA | Gas Property | Dec 2024 |
| 5652 | OSTRANDER | Tioga County, PA | Gas Property | Feb 2025 |
| 5653 | OSTRICH | Greene County, PA | Gas Property | Feb 2025 |
| 5654 | OSWAYO CHEMICAL | Potter County, PA | Gas Property | Dec 2024 |
| 5655 | OTIS | Bradford County, PA | Gas Property | Feb 2025 |
| 5656 | OTIS IRONS | McKean County, PA | Gas Property | Dec 2024 |
| 5657 | OTIS PROCIOUS ETAL | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 5658 | OTT 1 | Warren County, PA | Gas Property | Dec 2024 |
| 5659 | OTT 2 | Warren County, PA | Gas Property | Dec 2024 |
| 5660 | OTTEN | Bradford County, PA | Gas Property | Feb 2025 |
| 5661 | OTTEN | Wyoming County, PA | Gas Property | Feb 2025 |
| 5662 | OTTER WELL SVC | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 5663 | OTTO CHEM | Elk County, PA | Gas Property | Dec 2024 |
| 5664 | OUTSIDE IN SCH OF EXPERI | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5665 | OVER | Clarion County, PA | Gas Property | Dec 2024 |
| 5666 | OVER | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 5667 | OW PROPER | Elk County, PA | Gas Property | Dec 2024 |
| 5668 | OWENS | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5669 | OZOG-THOMPSON 00 | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5670 | P B SLEASE | Armstrong County, PA | Gas Property | Dec 2024 |
| 5671 | P CULLEN | Bradford County, PA | Gas Property | Feb 2025 |
| 5672 | P F EIS | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5673 | P F RIGGLE | Armstrong County, PA | Gas Property | Dec 2024 |
| 5674 | P H C 58H | Clearfield County, PA | Gas Property | Feb 2025 |
| 5675 | P H DEETER NORTH | Venango County, PA | Gas Property | Dec 2024 |
| 5676 | P LONG | Indiana County, PA | Gas Property | Dec 2024 |
| 5677 | P M DEETER | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 5678 | P MOHNEY | Armstrong County, PA | Gas Property | Dec 2024 |
| 5679 | P NICHOLS | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5680 | P P V CORP | Clearfield County, PA | Gas Property | Dec 2024 |
| 5681 | P R LONG | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5682 | P R U E WEISTER | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 5683 | P RINNE | Washington County, PA | Gas Property | Dec 2020 |
| 5684 | P WALDENBERGER | Susquehanna County, PA | Gas Property | Feb 2025 |
| 5685 | P WELLS | Susquehanna County, PA | Gas Property | Feb 2025 |
| 5686 | P WINSLOW | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 5687 | P&G 4 UNIT P&G4 2H | Wyoming County, PA | Gas Property | Feb 2025 |
| 5688 | P&G WAREHOUSE UNIT | Wyoming County, PA | Gas Property | Feb 2025 |
| 5689 | P&G4 P&G | Wyoming County, PA | Gas Property | Feb 2025 |
| 5690 | P.T. SHERRY | Indiana County, PA | Gas Property | Dec 2024 |
| 5691 | PA CHIP CHOP | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 5692 | PA DEPT | Clearfield County, PA | Gas Property | Dec 2023 |
| 5693 | PA DEPT OF F & W | Potter County, PA | Gas Property | Dec 1985 |
| 5694 | PA DEPT OF FOREST & WATERS | Clearfield County, PA | Gas Property | Dec 1985 |
| 5695 | PA EAST SIDE LAND | Armstrong County, PA | Gas Property | Dec 2024 |
| 5696 | PA FORESTS & WATERS DEPT | Elk County, PA | Gas Property | Dec 2022 |
| 5697 | PA FORESTS & WATERS DEPT TRACT | Elk County, PA | Gas Property | Dec 2021 |
| 5698 | PA FORESTS & WATERS DEPT TRACT 27 | Elk County, PA | Oil & Gas Property | Dec 2009 |
| 5699 | PA GAME | Jefferson County, PA | Gas Property | Dec 2013 |
| 5700 | PA GAME COMM | Jefferson County, PA | Gas Property | Dec 2024 |