| 4901 | MATTOCKS UNIT MATTOCKS | Wyoming County, PA | Gas Property | Sep 2024 |
| 4902 | MATTY/MOMYER | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4903 | MATWAY | Fayette County, PA | Gas Property | Dec 2023 |
| 4904 | MATZ 824 | Tioga County, PA | Gas Property | Sep 2024 |
| 4905 | MAUDE E. CUMMIN | Armstrong County, PA | Gas Property | Dec 2023 |
| 4906 | MAURICE | Armstrong County, PA | Gas Property | Dec 2023 |
| 4907 | MAURICE M SINAN ET UX | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4908 | MAVILLA 42 | Washington County, PA | Oil & Gas Property | Dec 2023 |
| 4909 | MAWC TR | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4910 | MAWC TR 1 | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4911 | MAWC TR 2 | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4912 | MAWC TR 51 HUTCHIN | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4913 | MAWC TRACT 3 | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4914 | MAX M LLOYD | Indiana County, PA | Gas Property | Dec 2023 |
| 4915 | MAX M SHOFESTALL | Clarion County, PA | Gas Property | Dec 2023 |
| 4916 | MAX TENN | Armstrong County, PA | Gas Property | Dec 2023 |
| 4917 | MAX THEODORE CRAIG | Indiana County, PA | Gas Property | Dec 2023 |
| 4918 | MAYO | Jefferson County, PA | Gas Property | Dec 2023 |
| 4919 | MAZURE WILLIAM 12118 | Washington County, PA | Gas Property | Sep 2024 |
| 4920 | MAZZARA | Wyoming County, PA | Gas Property | Sep 2024 |
| 4921 | MC ANULTY | Indiana County, PA | Gas Property | Dec 2023 |
| 4922 | MCADOO UNIT | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 4923 | MCARDLE | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 4924 | MCAWLEY | Armstrong County, PA | Gas Property | Dec 2023 |
| 4925 | MCBETH | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 4926 | MCBETH | Fayette County, PA | Gas Property | Dec 2023 |
| 4927 | MCBROOM 1 | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4928 | MCC PARTNERS | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 4929 | MCCABE | Bradford County, PA | Gas Property | Sep 2024 |
| 4930 | MCCALL UNIT | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 4931 | MCCALMONT | Venango County, PA | Oil Property | Dec 2015 |
| 4932 | MCCALMONT | Butler County, PA | Oil & Gas Property | Dec 2016 |
| 4933 | MCCARTHY UNIT MCCARTHY 1H | Wyoming County, PA | Gas Property | Sep 2024 |
| 4934 | MCCARTHY UNIT P&G WAREHOUSE 1 MCCARTHY | Wyoming County, PA | Gas Property | Sep 2024 |
| 4935 | MCCARTNEY | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 4936 | MCCAULEY M | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4937 | MCCAY M-598 | Clearfield County, PA | Gas Property | Dec 2023 |
| 4938 | MCCHESNEY | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 4939 | MCCLAIN | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 4940 | MCCLAIN 8 | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4941 | MCCLAY J | Washington County, PA | Oil Property | Dec 1993 |
| 4942 | MCCLEARY | Jefferson County, PA | Gas Property | Dec 2023 |
| 4943 | MCCLIMANS | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 4944 | MCCLOSKEY L | Mercer County, PA | Gas Property | Dec 2023 |
| 4945 | MCCLURE | Greene County, PA | Gas Property | Dec 2023 |
| 4946 | MCCLURE HEIRS | Greene County, PA | Gas Property | Dec 2023 |
| 4947 | MCCLURE M | Jefferson County, PA | Gas Property | Dec 2023 |
| 4948 | MCCONNAUGHEY | Indiana County, PA | Gas Property | Dec 2023 |
| 4949 | MCCONNELL | Bradford County, PA | Gas Property | Sep 2024 |
| 4950 | MCCONNELL | Indiana County, PA | Gas Property | Dec 2023 |
| 4951 | MCCOOL | Warren County, PA | Oil & Gas Property | Dec 2001 |
| 4952 | MCCOOL & MCCOOL | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 4953 | MCCOOL BROS STONEHAM LEASE LOT 466 | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 4954 | MCCORMACK | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 4955 | MCCORMICK 00 | Indiana County, PA | Gas Property | Dec 2023 |
| 4956 | MCCOY | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 4957 | MCCOY | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 4958 | MCCOY SMALL | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 4959 | MCCRACKEN | Clearfield County, PA | Gas Property | Dec 2023 |
| 4960 | MCCRADY | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 4961 | MCCREA | Butler County, PA | Gas Property | Sep 2024 |
| 4962 | MCCREIGHT | Jefferson County, PA | Gas Property | Dec 2023 |
| 4963 | MCCULLOUGH | Indiana County, PA | Gas Property | Dec 2023 |
| 4964 | MCCULLOUGH | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 4965 | MCCULLOUGH | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 4966 | MCCULLOUGH | Mercer County, PA | Oil & Gas Property | Sep 2024 |
| 4967 | MCCULLOUGH | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4968 | MCCULLOUGH H | Armstrong County, PA | Gas Property | Dec 2023 |
| 4969 | MCCULLOUGH IMOGENE | Armstrong County, PA | Gas Property | Dec 2023 |
| 4970 | MCDANEL BEA | Beaver County, PA | Gas Property | Sep 2024 |
| 4971 | MCDIVITT | Westmoreland County, PA | Gas Property | Dec 2023 |
| 4972 | MCDONOUGH | Washington County, PA | Gas Property | Sep 2024 |
| 4973 | MCDONOUGH | Wyoming County, PA | Gas Property | Sep 2024 |
| 4974 | MCDOWELL | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 4975 | MCDOWELL | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 4976 | MCELHINNY | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 4977 | MCELHOES-BUCHANAN | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4978 | MCELROY | Armstrong County, PA | Gas Property | Dec 2023 |
| 4979 | MCENANEY | Bradford County, PA | Gas Property | Sep 2024 |
| 4980 | MCFADDEN | Clearfield County, PA | Gas Property | Dec 2023 |
| 4981 | MCFALL UNIT | Mercer County, PA | Gas Property | Dec 2023 |
| 4982 | MCFARLAND | Lawrence County, PA | Gas Property | Dec 2023 |
| 4983 | MCFATE | Venango County, PA | Oil Property | Dec 2023 |
| 4984 | MCGARRELL | Forest County, PA | Oil Property | Dec 2021 |
| 4985 | MCGAUGHEY | Armstrong County, PA | Gas Property | Dec 2023 |
| 4986 | MCGAVIN | Wyoming County, PA | Gas Property | Sep 2024 |
| 4987 | MCGEE | Clearfield County, PA | Oil & Gas Property | Dec 2023 |
| 4988 | MCGILL | Fayette County, PA | Gas Property | Dec 2023 |
| 4989 | MCGOWAN | Washington County, PA | Gas Property | Dec 2023 |
| 4990 | MCGRAW | Warren County, PA | Gas Property | Dec 2023 |
| 4991 | MCGRAW | Indiana County, PA | Gas Property | Dec 2023 |
| 4992 | MCGRAW | Wyoming County, PA | Gas Property | Sep 2024 |
| 4993 | MCGROARTY | Bradford County, PA | Gas Property | Sep 2024 |
| 4994 | MCILVAINE CENTRAL PAD-15 | Westmoreland County, PA | Gas Property | Sep 2024 |
| 4995 | MCINTIRE | Indiana County, PA | Gas Property | Dec 2023 |
| 4996 | MCINTIRE | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4997 | MCINTIRE | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 4998 | MCIVER MCALEVY | Crawford County, PA | Gas Property | Dec 2023 |
| 4999 | MCJUNKIN | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 5000 | MCKAY | Armstrong County, PA | Gas Property | Dec 2023 |