| 5101 | MORRIS | Armstrong County, PA | Gas Property | Dec 2023 |
| 5102 | MORRIS STERN | Indiana County, PA | Gas Property | Dec 2021 |
| 5103 | MORRISON | Warren County, PA | Gas Property | Dec 2021 |
| 5104 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5105 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2021 |
| 5106 | MORRISON | Venango County, PA | Oil Property | Dec 1999 |
| 5107 | MORRISON RUN LOT 4 | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5108 | MORROW | Greene County, PA | Gas Property | Dec 2023 |
| 5109 | MORROW | Butler County, PA | Gas Property | Mar 2024 |
| 5110 | MORSE | Bradford County, PA | Gas Property | Feb 2024 |
| 5111 | MORTON | Greene County, PA | Oil & Gas Property | Mar 2024 |
| 5112 | MOSER | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5113 | MOSER | Lycoming County, PA | Gas Property | Mar 2024 |
| 5114 | MOSER WARRANT 3767 | McKean County, PA | Oil & Gas Property | Dec 2008 |
| 5115 | MOSHANNON DCNR TRACT 826 | Clearfield County, PA | Gas Property | Dec 2016 |
| 5116 | MOUNTAIN GATHERING | Butler County, PA | Oil & Gas Property | Mar 2024 |
| 5117 | MOUNTAIN MEADOW | Lycoming County, PA | Gas Property | Feb 2024 |
| 5118 | MOUNTAIN RUN HUNTING CLUB 02 153 0 | Tioga County, PA | Gas Property | Feb 2024 |
| 5119 | MOUNTAIN TRAILS INC | Armstrong County, PA | Gas Property | Dec 2023 |
| 5120 | MOURER | Butler County, PA | Oil & Gas Property | Mar 2024 |
| 5121 | MOWL CHARLES 11760 | Washington County, PA | Gas Property | Feb 2024 |
| 5122 | MOWREY | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5123 | MOWREY | Clearfield County, PA | Gas Property | Dec 2023 |
| 5124 | MOWRY | Bradford County, PA | Gas Property | Feb 2024 |
| 5125 | MOYER BRA | Bradford County, PA | Gas Property | Feb 2024 |
| 5126 | MOYLAN | Warren County, PA | Oil & Gas Property | Dec 2022 |
| 5127 | MPC SUL | Sullivan County, PA | Gas Property | Feb 2024 |
| 5128 | MROC PAD | McKean County, PA | Gas Property | Feb 2024 |
| 5129 | MT SAVAGE REF | Armstrong County, PA | Gas Property | Dec 2023 |
| 5130 | MT SAVAGE REFRAC | Clarion County, PA | Gas Property | Dec 2023 |
| 5131 | MTL 1 | Bradford County, PA | Gas Property | Feb 2024 |
| 5132 | MTL 4H | Bradford County, PA | Gas Property | Feb 2024 |
| 5133 | MTL 6HC | Bradford County, PA | Gas Property | Feb 2024 |
| 5134 | MUDLICK | Armstrong County, PA | Gas Property | Mar 2024 |
| 5135 | MUDRICK | Washington County, PA | Gas Property | Dec 2023 |
| 5136 | MULLEN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5137 | MULLOY | Susquehanna County, PA | Gas Property | Mar 2024 |
| 5138 | MUMAU | Indiana County, PA | Gas Property | Dec 2023 |
| 5139 | MUMAU REVOCABLE TRUST 00 | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5140 | MUMFORD | Crawford County, PA | Gas Property | Dec 2023 |
| 5141 | MUNCE | Washington County, PA | Oil & Gas Property | Feb 2024 |
| 5142 | MUNCE WILLIAM 10060 | Washington County, PA | Gas Property | Feb 2024 |
| 5143 | MUNICIPAL AUTHORITY WESTMORELAND C | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5144 | MURACCA | Allegheny County, PA | Gas Property | Dec 2023 |
| 5145 | MURDICK/MORGAN | Indiana County, PA | Gas Property | Dec 2023 |
| 5146 | MURDOCK | Erie County, PA | Gas Property | Dec 2023 |
| 5147 | MURIEL HOSTET | Indiana County, PA | Gas Property | Dec 2023 |
| 5148 | MURPHY 110 | Washington County, PA | Gas Property | Dec 2023 |
| 5149 | MURRAY | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5150 | MURRAY | Tioga County, PA | Gas Property | Mar 2024 |
| 5151 | MURRAY ESTATE | Clearfield County, PA | Gas Property | Dec 2023 |
| 5152 | MURRAY LEVINE | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5153 | MURRELL STATES | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 5154 | MURRY HEIRS | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 5155 | MUSANTE M | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5156 | MUSGRAVE | Beaver County, PA | Oil & Gas Property | Dec 2023 |
| 5157 | MUSKO | Armstrong County, PA | Gas Property | Dec 2023 |
| 5158 | MUSKOVICH PHILIP 12080 | Washington County, PA | Gas Property | Feb 2024 |
| 5159 | MUSOLINO NV62 | Washington County, PA | Gas Property | Mar 2024 |
| 5160 | MUSSER | Indiana County, PA | Gas Property | Dec 2023 |
| 5161 | MUSSER | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5162 | MUSSER | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 5163 | MUSSER | Indiana County, PA | Gas Property | Dec 2023 |
| 5164 | MUSSER ASSOCIATES | Indiana County, PA | Gas Property | Dec 2023 |
| 5165 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5166 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5167 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5168 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5169 | MUTNANSKY UNIT | Fayette County, PA | Gas Property | Feb 2024 |
| 5170 | MUZETTE MS | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 5171 | MUZZY UNIT | Bradford County, PA | Gas Property | Feb 2024 |
| 5172 | MY TB INVESTMENTS LLC 6076 | Tioga County, PA | Gas Property | Mar 2024 |
| 5173 | MYERS | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 5174 | MYERS | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5175 | MYERS | Westmoreland County, PA | Gas Property | Dec 2023 |
| 5176 | MYERS | Washington County, PA | Gas Property | Dec 2023 |
| 5177 | MYERS | Clearfield County, PA | Gas Property | Dec 2023 |
| 5178 | MYERS | Venango County, PA | Gas Property | Dec 2023 |
| 5179 | MYERS 00 | Armstrong County, PA | Gas Property | Dec 2023 |
| 5180 | MYERS R | Susquehanna County, PA | Gas Property | Mar 2024 |
| 5181 | MYERS UNIT | Venango County, PA | Gas Property | Dec 2023 |
| 5182 | MYERS UNIT | Lycoming County, PA | Gas Property | Mar 2024 |
| 5183 | MYERS UNIT | Bradford County, PA | Gas Property | Nov 2023 |
| 5184 | MYERS V | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 5185 | MYRTLE MACKENDRICK | Indiana County, PA | Gas Property | Dec 2023 |
| 5186 | MYRTLE SHUMAKER | Armstrong County, PA | Gas Property | Dec 2023 |
| 5187 | MYSTIC BROOKE | Indiana County, PA | Gas Property | Dec 2023 |
| 5188 | N B JOHNSTON | Greene County, PA | Gas Property | Dec 2023 |
| 5189 | N J NAKLES | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5190 | N PHILADELPHIA | Warren County, PA | Gas Property | Dec 2021 |
| 5191 | N R MARTIN | Armstrong County, PA | Gas Property | Dec 2023 |
| 5192 | N W SAYERS | Greene County, PA | Gas Property | Dec 2014 |
| 5193 | NAGEOTTE | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 5194 | NAGY | Fayette County, PA | Gas Property | Dec 2023 |
| 5195 | NANCY J BLACK | Indiana County, PA | Gas Property | Dec 2023 |
| 5196 | NANCY MCLAUGHLIN ET AL | Jefferson County, PA | Gas Property | Dec 2023 |
| 5197 | NANNIE NEHRIG | Indiana County, PA | Gas Property | Dec 2023 |
| 5198 | NANSEN | Elk County, PA | Oil & Gas Property | Dec 2017 |
| 5199 | NAOMI EMIGH | Indiana County, PA | Gas Property | Dec 2023 |
| 5200 | NARDELL UNIT 1 | Jefferson County, PA | Gas Property | Mar 2024 |