| Property Name | Property Location | Property Type | Most Recent Production | |
|---|---|---|---|---|
| 5001 | MARK FEILING | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 5002 | MARK M STEPHENSON | Indiana County, PA | Gas Property | Dec 2025 |
| 5003 | MARK REED MONTGOMERY | Jefferson County, PA | Gas Property | Dec 2025 |
| 5004 | MARK W & RUTH W SIMPSON | Indiana County, PA | Gas Property | Dec 2025 |
| 5005 | MARK WITHEROW | Clearfield County, PA | Gas Property | Dec 2025 |
| 5006 | MARKLE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 5007 | MARKOVITCH | Susquehanna County, PA | Gas Property | Dec 2025 |
| 5008 | MARLIN B STEPHENS | Indiana County, PA | Gas Property | Dec 2024 |
| 5009 | MARLIN FUNKA | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5010 | MARQUARDT | Lycoming County, PA | Gas Property | Dec 2025 |
| 5011 | MARSH | Indiana County, PA | Gas Property | Dec 2025 |
| 5012 | MARSH | Indiana County, PA | Gas Property | Dec 2025 |
| 5013 | MARSH | Mercer County, PA | Gas Property | Dec 2025 |
| 5014 | MARSHALL | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 5015 | MARSHALL | Indiana County, PA | Gas Property | Dec 2025 |
| 5016 | MARSHALL A DANIELSON | Warren County, PA | Gas Property | Dec 2024 |
| 5017 | MARSHALL HEIRS | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 5018 | MARSHALL-BELL UNIT | Clearfield County, PA | Gas Property | Dec 2025 |
| 5019 | MARSHLANDS UNIT | Tioga County, PA | Gas Property | Dec 2025 |
| 5020 | MARSUN | Crawford County, PA | Gas Property | Dec 2024 |
| 5021 | MARTHA ARNOLD MILLS | Indiana County, PA | Gas Property | Dec 2025 |
| 5022 | MARTHA EARHART | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5023 | MARTHA MALES 125 A | Clarion County, PA | Gas Property | Dec 2025 |
| 5024 | MARTIN | Bradford County, PA | Gas Property | Dec 2025 |
| 5025 | MARTIN | Bradford County, PA | Gas Property | Sep 2025 |
| 5026 | MARTIN | Mercer County, PA | Gas Property | Dec 2025 |
| 5027 | MARTIN | Jefferson County, PA | Gas Property | Dec 2025 |
| 5028 | MARTIN | Crawford County, PA | Gas Property | Dec 2025 |
| 5029 | MARTIN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5030 | MARTIN | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5031 | MARTIN | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5032 | MARTIN | Armstrong County, PA | Gas Property | Dec 2025 |
| 5033 | MARTIN | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5034 | MARTIN | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5035 | MARTIN BEARER | Cambria County, PA | Gas Property | Dec 2025 |
| 5036 | MARTIN C. TATE | Clearfield County, PA | Gas Property | Dec 2025 |
| 5037 | MARTIN EDWARD 12273 | Washington County, PA | Gas Property | Dec 2025 |
| 5038 | MARTIN FONNER | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5039 | MARTIN L BEARER | Cambria County, PA | Gas Property | Dec 2025 |
| 5040 | MARTIN L BEARER | Indiana County, PA | Gas Property | Dec 2025 |
| 5041 | MARTIN L BEARER | Indiana County, PA | Gas Property | Dec 2025 |
| 5042 | MARTIN MARIETTA CORP | Preston County, WV | Gas Property | Dec 2019 |
| 5043 | MARTINCIC | Washington County, PA | Gas Property | Dec 2025 |
| 5044 | MARTINO UNIT | Bradford County, PA | Gas Property | Dec 2025 |
| 5045 | MARVIN | Susquehanna County, PA | Gas Property | Dec 2025 |
| 5046 | MARVIN RUL | Clarion County, PA | Gas Property | Dec 2025 |
| 5047 | MARY BASH | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5048 | MARY BOGDANSKI | Indiana County, PA | Gas Property | Dec 2025 |
| 5049 | MARY CONARRO C | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5050 | MARY CROYLE | Clarion County, PA | Gas Property | Dec 2025 |
| 5051 | MARY ELLEN HULLIHEN HEIRS | Clearfield County, PA | Gas Property | Dec 2025 |
| 5052 | MARY ETTA DUNMIRE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 5053 | MARY HART RINN | Indiana County, PA | Gas Property | Dec 2025 |
| 5054 | MARY JAMES | Elk County, PA | Gas Property | Dec 2025 |
| 5055 | MARY M | Clearfield County, PA | Gas Property | Dec 2025 |
| 5056 | MARY M FLEMING | Indiana County, PA | Gas Property | Dec 2025 |
| 5057 | MARY MCGEE | Clearfield County, PA | Gas Property | Dec 2025 |
| 5058 | MARY PAUKOVICH | Indiana County, PA | Gas Property | Dec 2025 |
| 5059 | MARY RO | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 5060 | MARYNCHAK UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 5061 | MASE MONTE | Tioga County, PA | Gas Property | Dec 2025 |
| 5062 | MASSO | Susquehanna County, PA | Gas Property | Dec 2025 |
| 5063 | MAST | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 5064 | MASTER SPLINTER | Washington County, PA | Gas Property | Dec 2025 |
| 5065 | MASTERBRAY | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5066 | MASTERS | Venango County, PA | Oil Property | Dec 2025 |
| 5067 | MATCHETT FARM 12122 | Washington County, PA | Gas Property | Dec 2025 |
| 5068 | MATEER | Armstrong County, PA | Gas Property | Dec 2025 |
| 5069 | MATEER/SBI | Armstrong County, PA | Gas Property | Dec 2025 |
| 5070 | MATHEWS | McKean County, PA | Gas Property | Dec 2025 |
| 5071 | MATHEWS | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5072 | MATHEWS UNIT | Crawford County, PA | Gas Property | Dec 2025 |
| 5073 | MATSON | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 5074 | MATSON | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 5075 | MATSON 193 | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5076 | MATSON MATSON | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5077 | MATT | Sullivan County, PA | Gas Property | Dec 2025 |
| 5078 | MATT DALE | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5079 | MATT WILL FARMS | Bradford County, PA | Gas Property | Dec 2025 |
| 5080 | MATTESON | Potter County, PA | Gas Property | Dec 2024 |
| 5081 | MATTHEW ANTHONY | Armstrong County, PA | Gas Property | Dec 2025 |
| 5082 | MATTHEW HEIRS | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 5083 | MATTHEW MILLER | Armstrong County, PA | Gas Property | Dec 2025 |
| 5084 | MATTHEWS | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5085 | MATTIE | Armstrong County, PA | Gas Property | Dec 2025 |
| 5086 | MATTOCKS UNIT MATTOCKS | Wyoming County, PA | Gas Property | Aug 2025 |
| 5087 | MATTY/MOMYER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5088 | MATWAY | Fayette County, PA | Gas Property | Dec 2025 |
| 5089 | MATZ 824 | Tioga County, PA | Gas Property | Dec 2025 |
| 5090 | MAUDE E. CUMMIN | Armstrong County, PA | Gas Property | Dec 2024 |
| 5091 | MAURICE | Armstrong County, PA | Gas Property | Dec 2025 |
| 5092 | MAURICE M. SINAN ETUX | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 5093 | MAVILLA 42 | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5094 | MAWC TR | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5095 | MAWC TR 1 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5096 | MAWC TR 2 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5097 | MAWC TR 51 HUTCHIN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5098 | MAWC TRACT 3 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5099 | MAX M LLOYD | Indiana County, PA | Gas Property | Dec 2025 |
| 5100 | MAX M SHOFESTALL | Clarion County, PA | Gas Property | Dec 2025 |