| 5201 | MORELAND | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 5202 | MORETZ 03 036 | Bradford County, PA | Gas Property | Sep 2024 |
| 5203 | MORGAN | Washington County, PA | Oil & Gas Property | Dec 2021 |
| 5204 | MORGAN | Armstrong County, PA | Gas Property | Dec 2023 |
| 5205 | MORGAN | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 5206 | MORGAN | Warren County, PA | Oil & Gas Property | Dec 2019 |
| 5207 | MORGAN 01 07 | Bradford County, PA | Gas Property | Sep 2024 |
| 5208 | MORITZ EDWARD UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 5209 | MORRIS | Armstrong County, PA | Gas Property | Dec 2023 |
| 5210 | MORRIS | McKean County, PA | Oil Property | Dec 2022 |
| 5211 | MORRIS STERN | Indiana County, PA | Gas Property | Dec 2021 |
| 5212 | MORRISON | Warren County, PA | Gas Property | Dec 2023 |
| 5213 | MORRISON | Venango County, PA | Oil Property | Dec 1999 |
| 5214 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2021 |
| 5215 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5216 | MORRISON RUN LOT 4 | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5217 | MORROW | Butler County, PA | Gas Property | Sep 2024 |
| 5218 | MORROW | Greene County, PA | Gas Property | Dec 2023 |
| 5219 | MORSE | Bradford County, PA | Gas Property | Sep 2024 |
| 5220 | MORTON | Greene County, PA | Oil & Gas Property | Sep 2024 |
| 5221 | MOSER | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5222 | MOSER | Lycoming County, PA | Gas Property | Sep 2024 |
| 5223 | MOSER WARRANT 3767 | McKean County, PA | Oil & Gas Property | Dec 2008 |
| 5224 | MOSHANNON DCNR TRACT 826 | Clearfield County, PA | Gas Property | Dec 2016 |
| 5225 | MOUNTAIN GATHERING | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 5226 | MOUNTAIN MEADOW | Lycoming County, PA | Gas Property | Sep 2024 |
| 5227 | MOUNTAIN RUN HUNTING CLUB 02 153 0 | Tioga County, PA | Gas Property | Feb 2024 |
| 5228 | MOUNTAIN TRAILS INC | Armstrong County, PA | Gas Property | Dec 2023 |
| 5229 | MOURER | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 5230 | MOWL CHARLES 11760 | Washington County, PA | Gas Property | Sep 2024 |
| 5231 | MOWREY | Clearfield County, PA | Gas Property | Dec 2023 |
| 5232 | MOWREY | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 5233 | MOWREY MARSHBURG | McKean County, PA | Oil & Gas Property | Dec 2020 |
| 5234 | MOWRY | Bradford County, PA | Gas Property | Sep 2024 |
| 5235 | MOYER BRA | Bradford County, PA | Gas Property | Sep 2024 |
| 5236 | MOYLAN | Warren County, PA | Oil & Gas Property | Dec 2022 |
| 5237 | MPC SUL | Sullivan County, PA | Gas Property | Jun 2024 |
| 5238 | MR COBB TRACT | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5239 | MROC PAD | McKean County, PA | Gas Property | Feb 2024 |
| 5240 | MT SAVAGE REF | Armstrong County, PA | Gas Property | Dec 2023 |
| 5241 | MT SAVAGE REFRAC | Clarion County, PA | Gas Property | Dec 2023 |
| 5242 | MTL 1 | Bradford County, PA | Gas Property | Sep 2024 |
| 5243 | MTL 4H | Bradford County, PA | Gas Property | Sep 2024 |
| 5244 | MTL 6HC | Bradford County, PA | Gas Property | Sep 2024 |
| 5245 | MUDLICK | Armstrong County, PA | Gas Property | Sep 2024 |
| 5246 | MUDRICK | Washington County, PA | Gas Property | Dec 2023 |
| 5247 | MUIR 8 | Westmoreland County, PA | Gas Property | Sep 2024 |
| 5248 | MULLEN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5249 | MULLOY | Susquehanna County, PA | Gas Property | Sep 2024 |
| 5250 | MUMAU | Indiana County, PA | Gas Property | Dec 2023 |
| 5251 | MUMAU REVOCABLE TRUST 00 | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5252 | MUMFORD | Crawford County, PA | Gas Property | Dec 2023 |
| 5253 | MUNCE | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 5254 | MUNCE WILLIAM 10060 | Washington County, PA | Gas Property | Sep 2024 |
| 5255 | MUNICIPAL AUTHORITY WESTMORELAND C | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5256 | MURACCA | Allegheny County, PA | Gas Property | Dec 2023 |
| 5257 | MURDICK/MORGAN | Indiana County, PA | Gas Property | Dec 2023 |
| 5258 | MURDOCK | Erie County, PA | Gas Property | Dec 2023 |
| 5259 | MURIEL HOSTET | Indiana County, PA | Gas Property | Dec 2023 |
| 5260 | MURPHY 110 | Washington County, PA | Gas Property | Dec 2023 |
| 5261 | MURRAY | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5262 | MURRAY | Tioga County, PA | Gas Property | Sep 2024 |
| 5263 | MURRAY ESTATE | Clearfield County, PA | Gas Property | Dec 2023 |
| 5264 | MURRAY LEVINE | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 5265 | MURRELL STATES | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 5266 | MURRY HEIRS | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 5267 | MUSANTE M | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5268 | MUSGRAVE | Beaver County, PA | Oil & Gas Property | Dec 2023 |
| 5269 | MUSKO | Armstrong County, PA | Gas Property | Dec 2023 |
| 5270 | MUSKOVICH PHILIP 12080 | Washington County, PA | Gas Property | Sep 2024 |
| 5271 | MUSOLINO NV62 | Washington County, PA | Gas Property | Sep 2024 |
| 5272 | MUSSER | Indiana County, PA | Gas Property | Dec 2023 |
| 5273 | MUSSER | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 5274 | MUSSER | Indiana County, PA | Gas Property | Dec 2023 |
| 5275 | MUSSER | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 5276 | MUSSER ASSOCIATES | Indiana County, PA | Gas Property | Dec 2023 |
| 5277 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5278 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5279 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5280 | MUSSER FOREST | Indiana County, PA | Gas Property | Dec 2023 |
| 5281 | MUTNANSKY UNIT | Fayette County, PA | Gas Property | Sep 2024 |
| 5282 | MUZETTE MS | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 5283 | MY TB INVESTMENTS LLC 6076 | Tioga County, PA | Gas Property | Sep 2024 |
| 5284 | MYERS | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 5285 | MYERS | Washington County, PA | Gas Property | Dec 2023 |
| 5286 | MYERS | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 5287 | MYERS | Washington County, PA | Gas Property | Dec 2023 |
| 5288 | MYERS | Venango County, PA | Gas Property | Dec 2023 |
| 5289 | MYERS | Westmoreland County, PA | Gas Property | Dec 2023 |
| 5290 | MYERS | Clearfield County, PA | Gas Property | Dec 2023 |
| 5291 | MYERS 00 | Armstrong County, PA | Gas Property | Dec 2023 |
| 5292 | MYERS R | Susquehanna County, PA | Gas Property | Sep 2024 |
| 5293 | MYERS UNIT | Bradford County, PA | Gas Property | Sep 2024 |
| 5294 | MYERS UNIT | Lycoming County, PA | Gas Property | Sep 2024 |
| 5295 | MYERS UNIT | Venango County, PA | Gas Property | Dec 2023 |
| 5296 | MYERS V | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 5297 | MYRTLE MACKENDRICK | Indiana County, PA | Gas Property | Dec 2023 |
| 5298 | MYRTLE SHUMAKER | Armstrong County, PA | Gas Property | Dec 2023 |
| 5299 | MYSTIC BROOKE | Indiana County, PA | Gas Property | Dec 2023 |
| 5300 | N B JOHNSTON | Greene County, PA | Gas Property | Dec 2023 |