| 4901 | MARTIN | Jefferson County, PA | Gas Property | Dec 2025 |
| 4902 | MARTIN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4903 | MARTIN | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 4904 | MARTIN BEARER | Cambria County, PA | Gas Property | Dec 2025 |
| 4905 | MARTIN C. TATE | Clearfield County, PA | Gas Property | Dec 2025 |
| 4906 | MARTIN EDWARD 12273 | Washington County, PA | Gas Property | Feb 2026 |
| 4907 | MARTIN FONNER | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 4908 | MARTIN L BEARER | Indiana County, PA | Gas Property | Dec 2025 |
| 4909 | MARTIN L BEARER | Cambria County, PA | Gas Property | Dec 2025 |
| 4910 | MARTIN L BEARER | Indiana County, PA | Gas Property | Dec 2025 |
| 4911 | MARTIN MARIETTA CORP | Preston County, WV | Gas Property | Dec 2025 |
| 4912 | MARTINCIC | Washington County, PA | Gas Property | Dec 2025 |
| 4913 | MARTINO UNIT | Bradford County, PA | Gas Property | Feb 2026 |
| 4914 | MARTZ | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 4915 | MARVIN | Susquehanna County, PA | Gas Property | Feb 2026 |
| 4916 | MARVIN RUL | Clarion County, PA | Gas Property | Dec 2025 |
| 4917 | MARY BASH | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4918 | MARY BOGDANSKI | Indiana County, PA | Gas Property | Dec 2025 |
| 4919 | MARY CONARRO C | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 4920 | MARY CROYLE | Clarion County, PA | Gas Property | Dec 2025 |
| 4921 | MARY ELLEN HULLIHEN HEIRS | Clearfield County, PA | Gas Property | Dec 2025 |
| 4922 | MARY ETTA DUNMIRE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 4923 | MARY HART RINN | Indiana County, PA | Gas Property | Dec 2025 |
| 4924 | MARY JAMES | Elk County, PA | Gas Property | Dec 2025 |
| 4925 | MARY KRKANICH | Beaver County, PA | Oil & Gas Property | Dec 2025 |
| 4926 | MARY M | Clearfield County, PA | Gas Property | Dec 2025 |
| 4927 | MARY M FLEMING | Indiana County, PA | Gas Property | Dec 2025 |
| 4928 | MARY MCGEE | Clearfield County, PA | Gas Property | Dec 2025 |
| 4929 | MARY PAUKOVICH | Indiana County, PA | Gas Property | Dec 2025 |
| 4930 | MARY RO | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 4931 | MARYNCHAK UNIT | Washington County, PA | Gas Property | Feb 2026 |
| 4932 | MASE MONTE | Tioga County, PA | Gas Property | Feb 2026 |
| 4933 | MASSO | Susquehanna County, PA | Gas Property | Feb 2026 |
| 4934 | MAST | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 4935 | MASTER SPLINTER | Washington County, PA | Gas Property | Feb 2026 |
| 4936 | MASTERBRAY | Fayette County, PA | Oil & Gas Property | Feb 2026 |
| 4937 | MASTERS | Venango County, PA | Oil Property | Dec 2025 |
| 4938 | MATCHETT FARM 12122 | Washington County, PA | Gas Property | Feb 2026 |
| 4939 | MATEER | Armstrong County, PA | Gas Property | Dec 2025 |
| 4940 | MATEER/SBI | Armstrong County, PA | Gas Property | Dec 2025 |
| 4941 | MATHEWS | McKean County, PA | Gas Property | Dec 2025 |
| 4942 | MATHEWS | Greene County, PA | Oil & Gas Property | Feb 2026 |
| 4943 | MATHEWS UNIT | Crawford County, PA | Gas Property | Dec 2025 |
| 4944 | MATSON | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 4945 | MATSON | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 4946 | MATSON 193 | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 4947 | MATSON MATSON | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 4948 | MATT | Sullivan County, PA | Gas Property | Feb 2026 |
| 4949 | MATT DALE | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4950 | MATT WILL FARMS | Bradford County, PA | Gas Property | Dec 2025 |
| 4951 | MATTHEW ANTHONY | Armstrong County, PA | Gas Property | Dec 2025 |
| 4952 | MATTHEW HEIRS | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 4953 | MATTHEW MILLER | Armstrong County, PA | Gas Property | Dec 2025 |
| 4954 | MATTHEWS | Greene County, PA | Oil & Gas Property | Feb 2026 |
| 4955 | MATTIE | Armstrong County, PA | Gas Property | Dec 2025 |
| 4956 | MATTOCKS UNIT MATTOCKS | Wyoming County, PA | Gas Property | Feb 2026 |
| 4957 | MATTY-MOMYER | Westmoreland County, PA | Gas Property | Feb 2026 |
| 4958 | MATWAY | Fayette County, PA | Gas Property | Dec 2025 |
| 4959 | MATZ 824 | Tioga County, PA | Gas Property | Feb 2026 |
| 4960 | MAUDE E. CUMMIN | Armstrong County, PA | Gas Property | Dec 2025 |
| 4961 | MAURICE | Armstrong County, PA | Gas Property | Dec 2025 |
| 4962 | MAURICE M SINAN ET UX | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 4963 | MAVILLA 42 | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 4964 | MAWC TR | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4965 | MAWC TR 1 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4966 | MAWC TR 2 | Westmoreland County, PA | Gas Property | Feb 2026 |
| 4967 | MAWC TR 51 HUTCHIN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4968 | MAWC TRACT 3 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 4969 | MAX M LLOYD | Indiana County, PA | Gas Property | Dec 2025 |
| 4970 | MAX M SHOFESTALL | Clarion County, PA | Gas Property | Dec 2025 |
| 4971 | MAX TENN | Armstrong County, PA | Gas Property | Dec 2025 |
| 4972 | MAX THEODORE CRAIG | Indiana County, PA | Gas Property | Dec 2025 |
| 4973 | MAXSON | Potter County, PA | Gas Property | Dec 2024 |
| 4974 | MAYO | Jefferson County, PA | Gas Property | Dec 2025 |
| 4975 | MAYO LOT | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 4976 | MAYS | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 4977 | MAZURE WILLIAM 12118 | Washington County, PA | Gas Property | Feb 2026 |
| 4978 | MAZZARA | Wyoming County, PA | Gas Property | Feb 2026 |
| 4979 | MC ANULTY | Indiana County, PA | Gas Property | Dec 2025 |
| 4980 | MCADOO UNIT | Washington County, PA | Oil & Gas Property | Feb 2026 |
| 4981 | MCARDLE | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 4982 | MCAWLEY | Armstrong County, PA | Gas Property | Dec 2025 |
| 4983 | MCBETH | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 4984 | MCBETH | Fayette County, PA | Gas Property | Dec 2025 |
| 4985 | MCBROOM 1 | Westmoreland County, PA | Gas Property | Feb 2026 |
| 4986 | MCC PARTNERS | Washington County, PA | Oil & Gas Property | Feb 2026 |
| 4987 | MCCABE | Bradford County, PA | Gas Property | Feb 2026 |
| 4988 | MCCALL UNIT | Butler County, PA | Oil & Gas Property | Feb 2026 |
| 4989 | MCCALMONT | Venango County, PA | Oil Property | Dec 2025 |
| 4990 | MCCALMONT | Butler County, PA | Oil & Gas Property | Dec 2016 |
| 4991 | MCCARTHY UNIT MCCARTHY 1H | Wyoming County, PA | Gas Property | Feb 2026 |
| 4992 | MCCARTHY UNIT P&G WAREHOUSE 1 MCCARTHY | Wyoming County, PA | Gas Property | Feb 2026 |
| 4993 | MCCARTNEY | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 4994 | MCCAULEY M | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 4995 | MCCAY M-598 | Clearfield County, PA | Gas Property | Dec 2025 |
| 4996 | MCCHESNEY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 4997 | MCCLAIN | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 4998 | MCCLAIN 8 | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 4999 | MCCLAY J | Washington County, PA | Oil Property | Dec 1993 |
| 5000 | MCCLEARY | Jefferson County, PA | Gas Property | Dec 2025 |