| 5501 | OLIVER | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 5502 | OLIVER | Fayette County, PA | Gas Property | Dec 2024 |
| 5503 | OLIVER EAST MON23H1 | Allegheny County, PA | Gas Property | Oct 2025 |
| 5504 | OLIVER FARM WARRANT 4004 | McKean County, PA | Oil & Gas Property | Dec 2009 |
| 5505 | OLIVER UNIT | Susquehanna County, PA | Gas Property | Oct 2025 |
| 5506 | OLIVER W PROPER | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 5507 | OLLIE MORRIS | Jefferson County, PA | Gas Property | Dec 2024 |
| 5508 | OLSON | Warren County, PA | Gas Property | Dec 2024 |
| 5509 | OLSON 02 101 0 | Tioga County, PA | Gas Property | Oct 2025 |
| 5510 | OLSON ROBERT & MARGARET 3864 | Jefferson County, PA | Gas Property | Dec 2024 |
| 5511 | OLSON UNIT | Venango County, PA | Gas Property | Dec 2024 |
| 5512 | OLYMPIC LAKE ESTATES 07 083 0 | Susquehanna County, PA | Gas Property | Oct 2025 |
| 5513 | OMASTA | Westmoreland County, PA | Gas Property | Dec 2000 |
| 5514 | OMR (02-188 | Tioga County, PA | Gas Property | Oct 2025 |
| 5515 | ONIFRO O | McKean County, PA | Oil & Gas Property | Dec 2005 |
| 5516 | OPACIC | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 5517 | ORENCHUK RUSSELL 11890 | Washington County, PA | Gas Property | Oct 2025 |
| 5518 | ORIN LEE NEAL | Jefferson County, PA | Gas Property | Dec 2024 |
| 5519 | ORIS | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 5520 | ORIS M. SCHRECENGOST | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 5521 | ORLANDO HARMAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 5522 | ORLOSKY | Mercer County, PA | Gas Property | Dec 2024 |
| 5523 | ORMSBY DEVONIAN | McKean County, PA | Gas Property | Dec 1993 |
| 5524 | OROURKE 05 046 0 | Bradford County, PA | Gas Property | Oct 2025 |
| 5525 | ORR 1 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5526 | ORR 2 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5527 | ORR 3 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 5528 | ORTH B | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5529 | ORTHODOX | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 5530 | ORTON | Erie County, PA | Gas Property | Dec 1986 |
| 5531 | ORTON | Washington County, PA | Oil & Gas Property | Oct 2025 |
| 5532 | ORVILLE | Indiana County, PA | Gas Property | Dec 2024 |
| 5533 | ORVILLE M WATSON | Indiana County, PA | Gas Property | Dec 2024 |
| 5534 | ORVILLE W. PRESCOTT | Clearfield County, PA | Gas Property | Dec 2008 |
| 5535 | ORWICK | Clearfield County, PA | Gas Property | Dec 2024 |
| 5536 | OS BURNHAM | Crawford County, PA | Gas Property | Dec 2017 |
| 5537 | OSCAR B GRANT | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 5538 | OSCAR C BENSON | Jefferson County, PA | Gas Property | Dec 2024 |
| 5539 | OSCAR EARL HOUSER | Armstrong County, PA | Gas Property | Dec 2024 |
| 5540 | OSCAR J DRESSLER | Clearfield County, PA | Gas Property | Dec 2024 |
| 5541 | OSLEY | Fayette County, PA | Gas Property | Dec 2024 |
| 5542 | OSSESIA | Clarion County, PA | Gas Property | Dec 2024 |
| 5543 | OSSESSIA | Clarion County, PA | Gas Property | Dec 2024 |
| 5544 | OSTRANDER | Tioga County, PA | Gas Property | Oct 2025 |
| 5545 | OSTRICH | Greene County, PA | Gas Property | Oct 2025 |
| 5546 | OTIS | Bradford County, PA | Gas Property | Oct 2025 |
| 5547 | OTIS IRONS | McKean County, PA | Gas Property | Dec 2024 |
| 5548 | OTIS PROCIOUS ETAL | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 5549 | OTT 1 | Warren County, PA | Gas Property | Dec 2024 |
| 5550 | OTT 2 | Warren County, PA | Gas Property | Dec 2024 |
| 5551 | OTTEN | Bradford County, PA | Gas Property | Oct 2025 |
| 5552 | OTTEN | Wyoming County, PA | Gas Property | Oct 2025 |
| 5553 | OTTER WELL SVC | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 5554 | OTTO CHEM | Elk County, PA | Gas Property | Dec 2024 |
| 5555 | OVER | Clarion County, PA | Gas Property | Dec 2024 |
| 5556 | OVER | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 5557 | OW PROPER | Elk County, PA | Gas Property | Dec 2024 |
| 5558 | OWENS | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5559 | OZOG-THOMPSON 00 | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5560 | P B SLEASE | Armstrong County, PA | Gas Property | Dec 2024 |
| 5561 | P CULLEN | Bradford County, PA | Gas Property | Oct 2025 |
| 5562 | P F EIS | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5563 | P F RIGGLE | Armstrong County, PA | Gas Property | Dec 2024 |
| 5564 | P H C 58H | Clearfield County, PA | Gas Property | Oct 2025 |
| 5565 | P H DEETER NORTH | Venango County, PA | Gas Property | Dec 2024 |
| 5566 | P KELLEY | Susquehanna County, PA | Gas Property | Oct 2025 |
| 5567 | P LONG | Indiana County, PA | Gas Property | Dec 2024 |
| 5568 | P M DEETER | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 5569 | P NICHOLS | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5570 | P P V CORP | Clearfield County, PA | Gas Property | Dec 2024 |
| 5571 | P R LONG | Westmoreland County, PA | Gas Property | Dec 2024 |
| 5572 | P R U E WEISTER | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 5573 | P RINNE | Washington County, PA | Gas Property | Dec 2020 |
| 5574 | P WALDENBERGER | Susquehanna County, PA | Gas Property | Oct 2025 |
| 5575 | P WELLS | Susquehanna County, PA | Gas Property | Oct 2025 |
| 5576 | P WINSLOW | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 5577 | P&G 4 UNIT P&G4 2H | Wyoming County, PA | Gas Property | Oct 2025 |
| 5578 | P&G WAREHOUSE UNIT | Wyoming County, PA | Gas Property | Oct 2025 |
| 5579 | P&G4 P&G | Wyoming County, PA | Gas Property | Oct 2025 |
| 5580 | P.T. SHERRY | Indiana County, PA | Gas Property | Dec 2024 |
| 5581 | PA CHIP CHOP | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 5582 | PA DEPT | Clearfield County, PA | Gas Property | Dec 2023 |
| 5583 | PA DEPT OF F & W | Potter County, PA | Gas Property | Dec 1985 |
| 5584 | PA DEPT OF FOREST & WATERS | Clearfield County, PA | Gas Property | Dec 1985 |
| 5585 | PA EAST SIDE LAND | Armstrong County, PA | Gas Property | Dec 2024 |
| 5586 | PA FORESTS & WATERS DEPT | Elk County, PA | Gas Property | Dec 2022 |
| 5587 | PA FORESTS & WATERS DEPT TRACT | Elk County, PA | Gas Property | Dec 2021 |
| 5588 | PA FORESTS & WATERS DEPT TRACT 27 | Elk County, PA | Oil & Gas Property | Dec 2009 |
| 5589 | PA GAME | Jefferson County, PA | Gas Property | Dec 2013 |
| 5590 | PA GAME COMM | Jefferson County, PA | Gas Property | Dec 2024 |
| 5591 | PA GAME COMM | Mercer County, PA | Gas Property | Dec 2023 |
| 5592 | PA GAME COMM FMLY A | Jefferson County, PA | Gas Property | Dec 2024 |
| 5593 | PA GAME COMM SGL | McKean County, PA | Oil & Gas Property | Dec 2011 |
| 5594 | PA GAME COMMISSION UNIT | Washington County, PA | Gas Property | Oct 2025 |
| 5595 | PA GAS WARRANT 3188 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 5596 | PA GAS WARRANT 3188 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 5597 | PA LAND HOLDINGS | Greene County, PA | Gas Property | Dec 2020 |
| 5598 | PA LAND HOLDINGS CO | Greene County, PA | Gas Property | Dec 2024 |
| 5599 | PA MINES | Cambria County, PA | Oil & Gas Property | Dec 2024 |
| 5600 | PA OIL CO TRACT | Warren County, PA | Oil & Gas Property | Dec 2024 |