| 5001 | MATTHEW HEIRS | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 5002 | MATTHEW MILLER | Armstrong County, PA | Gas Property | Dec 2025 |
| 5003 | MATTHEWS | Greene County, PA | Oil & Gas Property | Jun 2026 |
| 5004 | MATTIE | Armstrong County, PA | Gas Property | Dec 2025 |
| 5005 | MATTOCKS UNIT MATTOCKS | Wyoming County, PA | Gas Property | Jun 2026 |
| 5006 | MATTY/MOMYER | Westmoreland County, PA | Gas Property | Jun 2026 |
| 5007 | MATWAY | Fayette County, PA | Gas Property | Dec 2025 |
| 5008 | MATZ 824 | Tioga County, PA | Gas Property | Jun 2026 |
| 5009 | MAUDE E. CUMMIN | Armstrong County, PA | Gas Property | Dec 2025 |
| 5010 | MAURICE | Armstrong County, PA | Gas Property | Dec 2025 |
| 5011 | MAURICE M SINAN ET UX | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 5012 | MAVILLA 42 | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5013 | MAWC TR | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5014 | MAWC TR 1 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5015 | MAWC TR 2 | Westmoreland County, PA | Gas Property | Mar 2026 |
| 5016 | MAWC TR 51 HUTCHIN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5017 | MAWC TRACT 3 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5018 | MAX M LLOYD | Indiana County, PA | Gas Property | Dec 2025 |
| 5019 | MAX M SHOFESTALL | Clarion County, PA | Gas Property | Dec 2025 |
| 5020 | MAX TENN | Armstrong County, PA | Gas Property | Dec 2025 |
| 5021 | MAX THEODORE CRAIG | Indiana County, PA | Gas Property | Dec 2025 |
| 5022 | MAXSON | Potter County, PA | Gas Property | Dec 2025 |
| 5023 | MAXSON | Potter County, PA | Gas Property | Dec 2025 |
| 5024 | MAYO | Jefferson County, PA | Gas Property | Dec 2025 |
| 5025 | MAYO LOT | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5026 | MAYS | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 5027 | MAZURE WILLIAM 12118 | Washington County, PA | Gas Property | Jun 2026 |
| 5028 | MAZZARA | Wyoming County, PA | Gas Property | Jun 2026 |
| 5029 | MC ANULTY | Indiana County, PA | Gas Property | Dec 2025 |
| 5030 | MCADOO UNIT | Washington County, PA | Oil & Gas Property | Jun 2026 |
| 5031 | MCARDLE | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 5032 | MCAWLEY | Armstrong County, PA | Gas Property | Dec 2025 |
| 5033 | MCBETH | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5034 | MCBETH | Fayette County, PA | Gas Property | Dec 2025 |
| 5035 | MCBROOM 1 | Westmoreland County, PA | Gas Property | Jun 2026 |
| 5036 | MCC PARTNERS | Washington County, PA | Oil & Gas Property | Jun 2026 |
| 5037 | MCCABE | Bradford County, PA | Gas Property | Jun 2026 |
| 5038 | MCCALL UNIT | Butler County, PA | Oil & Gas Property | Jun 2026 |
| 5039 | MCCALMONT | Venango County, PA | Oil Property | Dec 2025 |
| 5040 | MCCALMONT | Butler County, PA | Oil & Gas Property | Dec 2016 |
| 5041 | MCCARTHY UNIT MCCARTHY 1H | Wyoming County, PA | Gas Property | Jun 2026 |
| 5042 | MCCARTHY UNIT P&G WAREHOUSE 1 MCCARTHY | Wyoming County, PA | Gas Property | Jun 2026 |
| 5043 | MCCARTNEY | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5044 | MCCAULEY M | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5045 | MCCAY M-598 | Clearfield County, PA | Gas Property | Dec 2025 |
| 5046 | MCCHESNEY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5047 | MCCLAIN | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5048 | MCCLAIN 8 | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 5049 | MCCLAY J | Washington County, PA | Oil Property | Dec 1993 |
| 5050 | MCCLEARY | Jefferson County, PA | Gas Property | Dec 2025 |
| 5051 | MCCLIMANS | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5052 | MCCLOSKEY L | Mercer County, PA | Gas Property | Dec 2025 |
| 5053 | MCCLURE | Greene County, PA | Gas Property | Dec 2025 |
| 5054 | MCCLURE HEIRS | Greene County, PA | Gas Property | Dec 2025 |
| 5055 | MCCLURE M | Jefferson County, PA | Gas Property | Dec 2025 |
| 5056 | MCCONNAUGHEY | Indiana County, PA | Gas Property | Dec 2025 |
| 5057 | MCCONNELL | Bradford County, PA | Gas Property | Jun 2026 |
| 5058 | MCCONNELL | Indiana County, PA | Gas Property | Dec 2025 |
| 5059 | MCCOOL | Warren County, PA | Oil & Gas Property | Dec 2001 |
| 5060 | MCCOOL & MCCOOL | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5061 | MCCOOL BROS STONEHAM LEASE LOT 466 | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5062 | MCCORMACK | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5063 | MCCORMICK 00 | Indiana County, PA | Gas Property | Dec 2025 |
| 5064 | MCCOY | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 5065 | MCCOY | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 5066 | MCCOY SMALL | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 5067 | MCCRACKEN | Clearfield County, PA | Gas Property | Dec 2025 |
| 5068 | MCCRADY | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 5069 | MCCREA | Butler County, PA | Gas Property | Jun 2026 |
| 5070 | MCCREIGHT | Jefferson County, PA | Gas Property | Dec 2025 |
| 5071 | MCCULLOUGH | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5072 | MCCULLOUGH | Indiana County, PA | Gas Property | Dec 2025 |
| 5073 | MCCULLOUGH | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 5074 | MCCULLOUGH | Mercer County, PA | Oil & Gas Property | Jun 2026 |
| 5075 | MCCULLOUGH | Westmoreland County, PA | Gas Property | Jun 2026 |
| 5076 | MCCULLOUGH H | Armstrong County, PA | Gas Property | Dec 2025 |
| 5077 | MCCULLOUGH IMOGENE | Armstrong County, PA | Gas Property | Dec 2025 |
| 5078 | MCDANEL BEA | Beaver County, PA | Gas Property | Jun 2026 |
| 5079 | MCDIVITT | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5080 | MCDONOUGH | Washington County, PA | Gas Property | Jun 2026 |
| 5081 | MCDONOUGH | Wyoming County, PA | Gas Property | Jun 2026 |
| 5082 | MCDOWELL | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5083 | MCDOWELL | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5084 | MCELHINNY | Butler County, PA | Oil & Gas Property | Jun 2026 |
| 5085 | MCELHOES-BUCHANAN | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 5086 | MCELROY | Armstrong County, PA | Gas Property | Dec 2025 |
| 5087 | MCENANEY | Bradford County, PA | Gas Property | Jun 2026 |
| 5088 | MCFADDEN | Clearfield County, PA | Gas Property | Dec 2025 |
| 5089 | MCFALL UNIT | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 5090 | MCFARLAND | Lawrence County, PA | Gas Property | Dec 2025 |
| 5091 | MCFATE | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 5092 | MCGARRELL | Forest County, PA | Oil Property | Dec 2021 |
| 5093 | MCGAUGHEY | Armstrong County, PA | Gas Property | Dec 2025 |
| 5094 | MCGAVIN | Wyoming County, PA | Gas Property | Jun 2026 |
| 5095 | MCGEE | Clearfield County, PA | Oil & Gas Property | Dec 2025 |
| 5096 | MCGILL | Fayette County, PA | Gas Property | Dec 2025 |
| 5097 | MCGOWAN | Washington County, PA | Gas Property | Dec 2025 |
| 5098 | MCGRAW | Warren County, PA | Gas Property | Dec 2025 |
| 5099 | MCGRAW | Wyoming County, PA | Gas Property | Jun 2026 |
| 5100 | MCGRAW | Indiana County, PA | Gas Property | Dec 2025 |