| 1 | M A RICHEY | Washington County, PA | Gas Property | Dec 2025 |
| 2 | M A SHOFFNER | Armstrong County, PA | Gas Property | Dec 2025 |
| 3 | M B BOWMAN | Indiana County, PA | Gas Property | Dec 2025 |
| 4 | M B JOHNSON | Washington County, PA | Gas Property | Dec 2025 |
| 5 | M B MARSHALL E S BELL | Clearfield County, PA | Gas Property | Dec 2025 |
| 6 | M BEARER | Cambria County, PA | Gas Property | Dec 2025 |
| 7 | M BENNETT & SONS | Indiana County, PA | Gas Property | Dec 2025 |
| 8 | M BENNETT & SONS INC | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 9 | M C BLOSSER | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 10 | M C SHRAUGER | Indiana County, PA | Gas Property | Dec 2025 |
| 11 | M CALDWELL | Clearfield County, PA | Gas Property | Dec 2025 |
| 12 | M CHESS | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 13 | M DAILEY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 14 | M DIEHL | Cambria County, PA | Gas Property | Dec 2025 |
| 15 | M E SHELTON | Armstrong County, PA | Gas Property | Dec 2025 |
| 16 | M H HARTZFELD | Clearfield County, PA | Gas Property | Dec 2025 |
| 17 | M HALLIDAY | Mercer County, PA | Gas Property | Dec 2025 |
| 18 | M J BRILHART | Indiana County, PA | Gas Property | Dec 2025 |
| 19 | M J HILTY | Westmoreland County, PA | Gas Property | Dec 2025 |
| 20 | M J TIMBLIN | Armstrong County, PA | Gas Property | Dec 2025 |
| 21 | M J WOJTOWICZ | Warren County, PA | Gas Property | Dec 2025 |
| 22 | M K VENSEL | Indiana County, PA | Gas Property | Dec 2025 |
| 23 | M KENNEMUTH | Clarion County, PA | Gas Property | Dec 2025 |
| 24 | M KOVALCHICK | Clearfield County, PA | Gas Property | Dec 2024 |
| 25 | M M GAHAGAN | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 26 | M M POTTS | Westmoreland County, PA | Gas Property | Dec 2025 |
| 27 | M MASTER | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 28 | M O MINTEER TRACT 1 | Armstrong County, PA | Gas Property | Dec 2025 |
| 29 | M OBRIEN | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 30 | M R COBB TRACT | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 31 | M R O C PAD B | McKean County, PA | Gas Property | Dec 2025 |
| 32 | M REINER | Jefferson County, PA | Gas Property | Dec 2025 |
| 33 | M SCHMUCKER | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 34 | M SEKERAK | Warren County, PA | Gas Property | Dec 2025 |
| 35 | M TEDDICK 1 | Susquehanna County, PA | Gas Property | Dec 2025 |
| 36 | M THOMPSON | Clearfield County, PA | Gas Property | Dec 2025 |
| 37 | M V NOLF | Armstrong County, PA | Gas Property | Dec 2025 |
| 38 | M W SAXMAN | Westmoreland County, PA | Gas Property | Dec 2025 |
| 39 | M WEAVER | Mercer County, PA | Gas Property | Dec 2025 |
| 40 | M WHITE | Armstrong County, PA | Gas Property | Dec 2025 |
| 41 | M WILCOX | Mercer County, PA | Gas Property | Dec 2025 |
| 42 | M WOODS | Mercer County, PA | Gas Property | Dec 2024 |
| 43 | M YOUNG | Clarion County, PA | Gas Property | Dec 2025 |
| 44 | M&M ESTATES | Sullivan County, PA | Gas Property | Jul 2025 |
| 45 | MABEL & INA BAUER | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 46 | MABEL WERTZ | Indiana County, PA | Gas Property | Dec 2025 |
| 47 | MABEL WISSINGER | Indiana County, PA | Gas Property | Dec 2025 |
| 48 | MABLE DURNELL/T PIERC | Warren County, PA | Oil & Gas Property | Dec 1996 |
| 49 | MAC 1 | Greene County, PA | Gas Property | Dec 2025 |
| 50 | MAC 2H | Greene County, PA | Gas Property | Dec 2025 |
| 51 | MAC 3 | Greene County, PA | Gas Property | Dec 2025 |
| 52 | MAC 4H | Greene County, PA | Gas Property | Dec 2025 |
| 53 | MAC 5 | Greene County, PA | Gas Property | Dec 2025 |
| 54 | MAC 6H | Greene County, PA | Gas Property | Dec 2025 |
| 55 | MAC 7 | Greene County, PA | Gas Property | Dec 2025 |
| 56 | MAC 8H | Greene County, PA | Gas Property | Dec 2025 |
| 57 | MAC 9 | Greene County, PA | Gas Property | Dec 2025 |
| 58 | MAC NORTH | Lycoming County, PA | Gas Property | Dec 2025 |
| 59 | MACAR | Fayette County, PA | Gas Property | Dec 2025 |
| 60 | MACGEORGE WEST 1 5H | Susquehanna County, PA | Gas Property | Dec 2025 |
| 61 | MACIALEK UNIT MACIALEK 1 1H | Wyoming County, PA | Gas Property | Dec 2025 |
| 62 | MACINTYRE UNIT | Washington County, PA | Gas Property | Nov 2025 |
| 63 | MACK | Elk County, PA | Oil & Gas Property | Dec 2018 |
| 64 | MACK | Erie County, PA | Gas Property | Dec 1994 |
| 65 | MACK | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 66 | MACKEY, R | Susquehanna County, PA | Gas Property | Dec 2025 |
| 67 | MACKRELL UNIT | Butler County, PA | Gas Property | Dec 2025 |
| 68 | MACLEAN (M-618) | Clearfield County, PA | Gas Property | Dec 2025 |
| 69 | MACLEOD/NORRIS | Armstrong County, PA | Gas Property | Dec 2025 |
| 70 | MAD DOG 2020 | Washington County, PA | Gas Property | Dec 2025 |
| 71 | MAD DOG BRA | Bradford County, PA | Gas Property | Dec 2025 |
| 72 | MADALYN C. HEILMAN | Armstrong County, PA | Gas Property | Dec 2025 |
| 73 | MADDEN | Bradford County, PA | Gas Property | Oct 2024 |
| 74 | MADIGAN FARMS UNIT A 1H | Bradford County, PA | Gas Property | Dec 2025 |
| 75 | MADISON | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 76 | MAGA BEA | Beaver County, PA | Gas Property | Dec 2025 |
| 77 | MAGAGNOTTI | Armstrong County, PA | Gas Property | Dec 2025 |
| 78 | MAGGIE | Bradford County, PA | Gas Property | Dec 2025 |
| 79 | MAGGIE SHROKMAN | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 80 | MAGILL UNIT | Butler County, PA | Oil & Gas Property | Dec 2025 |
| 81 | MAGNUM | Greene County, PA | Gas Property | Dec 2025 |
| 82 | MAHAFFEY | Clearfield County, PA | Oil & Gas Property | Dec 2025 |
| 83 | MAHAN | Warren County, PA | Oil Property | Dec 2016 |
| 84 | MAHLE | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 85 | MAHLE | Venango County, PA | Gas Property | Dec 2024 |
| 86 | MAHLON J BYLER | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 87 | MAHONING | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 88 | MAHONING | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 89 | MAHONING AMBROSIA | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 90 | MAHONING VALLEY MILLING CO | Jefferson County, PA | Gas Property | Dec 2025 |
| 91 | MAHONING YEO | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 92 | MAIOLINI | Susquehanna County, PA | Gas Property | Dec 2025 |
| 93 | MAKAYLA | Bradford County, PA | Gas Property | Dec 2025 |
| 94 | MAKOSKY T | Susquehanna County, PA | Gas Property | Dec 2025 |
| 95 | MAKUCH | Venango County, PA | Oil Property | Dec 2021 |
| 96 | MALACHOSKY | Washington County, PA | Gas Property | Nov 2025 |
| 97 | MALEK | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 98 | MALEK | Warren County, PA | Gas Property | Dec 2025 |
| 99 | MALINKY | Fayette County, PA | Gas Property | Dec 2025 |
| 100 | MALINKY UNIT | Washington County, PA | Gas Property | Nov 2025 |