| 5201 | MIRABELLI UNIT P&G WAREHOUSE 1 MIRABELLI 4H | Wyoming County, PA | Gas Property | Feb 2026 |
| 5202 | MITCHELL | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5203 | MITCHELL | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5204 | MITCHELL | Armstrong County, PA | Gas Property | Dec 2025 |
| 5205 | MITCHELL | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5206 | MITCHELL | Indiana County, PA | Gas Property | Dec 2025 |
| 5207 | MITCHELL | Clearfield County, PA | Oil & Gas Property | Dec 2025 |
| 5208 | MITCHELL | Jefferson County, PA | Gas Property | Dec 2025 |
| 5209 | MITCHELL | Clearfield County, PA | Gas Property | Dec 2025 |
| 5210 | MITCHELL 456 | Tioga County, PA | Gas Property | Apr 2022 |
| 5211 | MITCHELL A 903 | Potter County, PA | Gas Property | Feb 2026 |
| 5212 | MITCHELL FARMS | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5213 | MITCHELL JAMES UNIT | Washington County, PA | Oil & Gas Property | Feb 2026 |
| 5214 | MITCHELL P UNIT | Venango County, PA | Gas Property | Dec 2025 |
| 5215 | MIZIA | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5216 | MIZIA JAMES 11676 | Washington County, PA | Gas Property | Feb 2026 |
| 5217 | MM&G UNIT | Allegheny County, PA | Gas Property | Dec 2025 |
| 5218 | MOBEAR | Bradford County, PA | Gas Property | Feb 2026 |
| 5219 | MOCEK JOHN 11222 | Washington County, PA | Gas Property | Feb 2026 |
| 5220 | MOGRIDGE C 00 | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5221 | MOHAWK | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5222 | MOHAWK LODGE UNIT | Clinton County, PA | Gas Property | Feb 2026 |
| 5223 | MOHAWK NORTH UNIT | Clinton County, PA | Gas Property | Feb 2026 |
| 5224 | MOHNEY | Jefferson County, PA | Gas Property | Dec 2025 |
| 5225 | MOHNEY | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 5226 | MOHR | Greene County, PA | Oil & Gas Property | Feb 2026 |
| 5227 | MOJO | Washington County, PA | Gas Property | Feb 2026 |
| 5228 | MOLLY J | Bradford County, PA | Gas Property | Feb 2026 |
| 5229 | MOLNAR M | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5230 | MOLNAR UNIT | Washington County, PA | Oil & Gas Property | Dec 2013 |
| 5231 | MOMYER | Westmoreland County, PA | Gas Property | Dec 2025 |
| 5232 | MONARCH 591 | Jefferson County, PA | Gas Property | Feb 2026 |
| 5233 | MONARCH PARK | Venango County, PA | Oil Property | Dec 2018 |
| 5234 | MONO | Washington County, PA | Gas Property | Feb 2026 |
| 5235 | MONOCEROS | Butler County, PA | Gas Property | Feb 2026 |
| 5236 | MONRO (03-142-0 | Bradford County, PA | Gas Property | Feb 2026 |
| 5237 | MONROE C FENTON | Indiana County, PA | Gas Property | Dec 2025 |
| 5238 | MONROEVILLE PARK | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 5239 | MONROSS | Forest County, PA | Oil Property | Dec 2025 |
| 5240 | MONTEPARTE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 5241 | MONTGOMERY | Washington County, PA | Oil Property | Dec 1999 |
| 5242 | MONTGOMERY | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5243 | MONTGOMERY | Clarion County, PA | Gas Property | Dec 2024 |
| 5244 | MONTGOMERY | Armstrong County, PA | Gas Property | Aug 2019 |
| 5245 | MOOD | Fayette County, PA | Gas Property | Dec 2025 |
| 5246 | MOODY | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5247 | MOODY BRA | Bradford County, PA | Gas Property | Feb 2026 |
| 5248 | MOONEY | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5249 | MOONEY | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 5250 | MOONEY | Warren County, PA | Oil & Gas Property | Dec 2009 |
| 5251 | MOORE | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 5252 | MOORE | Lawrence County, PA | Gas Property | Dec 2025 |
| 5253 | MOORE | McKean County, PA | Oil Property | Dec 2025 |
| 5254 | MOORE | Greene County, PA | Gas Property | Dec 2025 |
| 5255 | MOORE | Jefferson County, PA | Gas Property | Dec 2025 |
| 5256 | MOORE 1 | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5257 | MOORE FARM | Bradford County, PA | Gas Property | Feb 2026 |
| 5258 | MOORE PARK 12065 | Washington County, PA | Gas Property | Feb 2026 |
| 5259 | MOORE RICHARD UNIT | Washington County, PA | Gas Property | Feb 2026 |
| 5260 | MOORE, S | Susquehanna County, PA | Gas Property | Feb 2026 |
| 5261 | MOOSE | Bradford County, PA | Gas Property | Feb 2026 |
| 5262 | MOOSE | Mercer County, PA | Gas Property | Dec 2025 |
| 5263 | MORAVEK | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5264 | MORELAND | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 5265 | MORETZ 03 036 | Bradford County, PA | Gas Property | Feb 2026 |
| 5266 | MORGAN | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 5267 | MORGAN | Washington County, PA | Oil & Gas Property | Dec 2021 |
| 5268 | MORGAN | Armstrong County, PA | Gas Property | Dec 2025 |
| 5269 | MORGAN | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5270 | MORGAN 01 07 | Bradford County, PA | Gas Property | Feb 2026 |
| 5271 | MORITZ EDWARD UNIT | Washington County, PA | Gas Property | Feb 2026 |
| 5272 | MORRIS | Armstrong County, PA | Gas Property | Dec 2025 |
| 5273 | MORRIS | McKean County, PA | Oil Property | Dec 2022 |
| 5274 | MORRIS STERN | Indiana County, PA | Gas Property | Dec 2021 |
| 5275 | MORRISON | Warren County, PA | Gas Property | Dec 2024 |
| 5276 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5277 | MORRISON | Venango County, PA | Oil Property | Dec 1999 |
| 5278 | MORRISON | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5279 | MORRISON RUN | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 5280 | MORROW | Greene County, PA | Gas Property | Dec 2025 |
| 5281 | MORROW | Butler County, PA | Gas Property | Feb 2026 |
| 5282 | MORSE | Bradford County, PA | Gas Property | Feb 2026 |
| 5283 | MORTON | Greene County, PA | Oil & Gas Property | Feb 2026 |
| 5284 | MOSER | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5285 | MOSER | Lycoming County, PA | Gas Property | Feb 2026 |
| 5286 | MOSER WARRANT 3767 | McKean County, PA | Oil & Gas Property | Dec 2008 |
| 5287 | MOSHANNON DCNR TRACT 826 | Clearfield County, PA | Gas Property | Dec 2016 |
| 5288 | MOUNTAIN GATHERING | Butler County, PA | Oil & Gas Property | Feb 2026 |
| 5289 | MOUNTAIN MEADOW | Lycoming County, PA | Gas Property | Feb 2026 |
| 5290 | MOUNTAIN RUN HUNTING CLUB (02-153 | Tioga County, PA | Gas Property | Feb 2026 |
| 5291 | MOUNTAIN TRAILS INC | Armstrong County, PA | Gas Property | Dec 2025 |
| 5292 | MOURER | Butler County, PA | Oil & Gas Property | Feb 2026 |
| 5293 | MOWL CHARLES 11760 | Washington County, PA | Gas Property | Feb 2026 |
| 5294 | MOWREY | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 5295 | MOWREY | Clearfield County, PA | Gas Property | Dec 2025 |
| 5296 | MOWREY MARSHBURG | McKean County, PA | Oil & Gas Property | Dec 2020 |
| 5297 | MOWRY | Bradford County, PA | Gas Property | Feb 2026 |
| 5298 | MOYER BRA | Bradford County, PA | Gas Property | Feb 2026 |
| 5299 | MOYLAN | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 5300 | MPC SUL | Sullivan County, PA | Gas Property | Feb 2026 |