| 901 | C MAYS | Clearfield County, PA | Gas Property | Dec 2023 |
| 902 | C MILLER | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 903 | C MOGRIDGE | Susquehanna County, PA | Gas Property | Jan 2024 |
| 904 | C MOORE | Armstrong County, PA | Gas Property | Dec 2023 |
| 905 | C MORRISON UNIT | Mercer County, PA | Gas Property | Dec 2023 |
| 906 | C O P 1 | Clearfield County, PA | Gas Property | Jan 2024 |
| 907 | C O P 3 | Elk County, PA | Gas Property | Jan 2024 |
| 908 | C O P 5 | Clearfield County, PA | Gas Property | Jan 2024 |
| 909 | C O P TR | Centre County, PA | Oil & Gas Property | Dec 2023 |
| 910 | C O P TRACT 293 PAD A 240 | Lycoming County, PA | Gas Property | Jan 2024 |
| 911 | C O P TRACT 729 PAD | Lycoming County, PA | Gas Property | Jan 2024 |
| 912 | C QUALK 00 | Washington County, PA | Gas Property | Dec 2023 |
| 913 | C RAYMOND GLASSER | Indiana County, PA | Gas Property | Dec 2023 |
| 914 | C RICHARD CAYLOR ET UX | Jefferson County, PA | Gas Property | Dec 2023 |
| 915 | C ROSENSTEEL | Indiana County, PA | Gas Property | Dec 2023 |
| 916 | C S & AUDREY M DAUGHERTY | Armstrong County, PA | Gas Property | Dec 2023 |
| 917 | C S DAY | Greene County, PA | Gas Property | Dec 2023 |
| 918 | C SCHWERIN | Indiana County, PA | Gas Property | Dec 2023 |
| 919 | C SHE | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 920 | C STEWART | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 921 | C STROHMAIER | Indiana County, PA | Gas Property | Dec 2023 |
| 922 | C T BELL | Indiana County, PA | Gas Property | Dec 2023 |
| 923 | C V WHITE | Warren County, PA | Gas Property | Dec 2021 |
| 924 | C W LYDIC | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 925 | C WEIGAND | Armstrong County, PA | Gas Property | Dec 2023 |
| 926 | C&I RESOURCES | Cambria County, PA | Gas Property | Dec 2019 |
| 927 | C&K 58 | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 928 | C&K COAL | Centre County, PA | Oil & Gas Property | Dec 2023 |
| 929 | C&K COAL | Centre County, PA | Gas Property | Dec 2023 |
| 930 | C&K COAL | Centre County, PA | Oil & Gas Property | Dec 2023 |
| 931 | C&K/MCCULLOUGH | Clarion County, PA | Gas Property | Jan 2024 |
| 932 | C&Z UNIT | Warren County, PA | Oil & Gas Property | Dec 2021 |
| 933 | C. PEPPER UNIT | Bradford County, PA | Gas Property | Jan 2024 |
| 934 | C.A. WEST ESTATE | Westmoreland County, PA | Gas Property | Dec 2023 |
| 935 | C.O.P. TRACT 25 | Centre County, PA | Oil & Gas Property | Dec 2023 |
| 936 | C.W. MCCONAUGHEY JR & HEIRS | Indiana County, PA | Gas Property | Dec 2023 |
| 937 | CABIN GREEN GOLF COURSE INC | Armstrong County, PA | Gas Property | Dec 2023 |
| 938 | CABLE & SNYDER LOGGING CO | Clearfield County, PA | Gas Property | Dec 2023 |
| 939 | CADER 00 | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 940 | CADWALADER UNIT | Lycoming County, PA | Gas Property | Jan 2024 |
| 941 | CAHILL REALTY BUSINESS UNIT | Bradford County, PA | Gas Property | Jan 2024 |
| 942 | CALDWELL C | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 943 | CALDWELL F | Washington County, PA | Oil & Gas Property | Dec 2023 |
| 944 | CALIARI BEL | Clearfield County, PA | Gas Property | Dec 2023 |
| 945 | CALLEN | Armstrong County, PA | Gas Property | Jan 2024 |
| 946 | CALLIOPE | Westmoreland County, PA | Gas Property | Jan 2024 |
| 947 | CALMITCH BRA | Bradford County, PA | Gas Property | Jul 2023 |
| 948 | CALVIN I NIEMEYER | Erie County, PA | Gas Property | Dec 2019 |
| 949 | CALVIN RO | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 950 | CALVIN SHAFFER | Jefferson County, PA | Gas Property | Dec 2023 |
| 951 | CALVIN SMITH HEIRS | Westmoreland County, PA | Gas Property | Dec 2023 |
| 952 | CAMERON | Indiana County, PA | Gas Property | Dec 2023 |
| 953 | CAMERON JOHNSTON | Clearfield County, PA | Gas Property | Dec 2023 |
| 954 | CAMP COMFORT 07 185 | Susquehanna County, PA | Gas Property | Jan 2024 |
| 955 | CAMPBELL | Indiana County, PA | Gas Property | Dec 2023 |
| 956 | CAMPBELL | Clarion County, PA | Gas Property | Dec 2020 |
| 957 | CAMPBELL | Indiana County, PA | Gas Property | Dec 2023 |
| 958 | CAMPBELL | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 959 | CAMPBELL | Jefferson County, PA | Gas Property | Dec 2023 |
| 960 | CAMPBELL | Fayette County, PA | Oil & Gas Property | Jan 2024 |
| 961 | CAMPBELL ERCOLE | Bradford County, PA | Gas Property | Jan 2024 |
| 962 | CAMPBELL FARMS | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 963 | CAMPBELL JACOB UNIT | Washington County, PA | Gas Property | Jan 2024 |
| 964 | CAMPBELL UNIT | Washington County, PA | Gas Property | Jan 2024 |
| 965 | CAMPISE | Washington County, PA | Oil & Gas Property | Dec 2023 |
| 966 | CANESTRALE | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 967 | CANESTRALE | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 968 | CANIS MAJOR | Butler County, PA | Gas Property | Jan 2024 |
| 969 | CANNELLA | Susquehanna County, PA | Gas Property | Jan 2024 |
| 970 | CANNIZZARO | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 971 | CANNON | Mercer County, PA | Oil & Gas Property | Dec 2023 |
| 972 | CANO | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 973 | CANTERBURY | Armstrong County, PA | Gas Property | Dec 2023 |
| 974 | CANTONI 00 | Allegheny County, PA | Oil & Gas Property | Dec 2023 |
| 975 | CAPIZZI | Indiana County, PA | Gas Property | Dec 2020 |
| 976 | CAPPUCCI | Wyoming County, PA | Gas Property | Jan 2024 |
| 977 | CAPRIO 07 077 | Susquehanna County, PA | Gas Property | Jan 2024 |
| 978 | CAPTAIN | Fayette County, PA | Gas Property | Dec 2023 |
| 979 | CAPTAIN JACK SPARROW | Washington County, PA | Gas Property | Jan 2024 |
| 980 | CAPTAIN USA | Washington County, PA | Gas Property | Jan 2024 |
| 981 | CARBONARA | Fayette County, PA | Gas Property | Dec 2023 |
| 982 | CARDINE | Fayette County, PA | Gas Property | Jan 2024 |
| 983 | CARDON M-621 | Clearfield County, PA | Gas Property | Dec 2023 |
| 984 | CAREY R 00 | Susquehanna County, PA | Gas Property | Jan 2024 |
| 985 | CARJA INC | Armstrong County, PA | Gas Property | Dec 2023 |
| 986 | CARKIN R | Mercer County, PA | Gas Property | Dec 2022 |
| 987 | CARL A SPEVETZ ET UX | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 988 | CARL BAILEY | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 989 | CARL BE | Erie County, PA | Gas Property | Dec 2023 |
| 990 | CARL DECKER | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 991 | CARL E HARKLEROAD | Clearfield County, PA | Gas Property | Dec 2023 |
| 992 | CARL E MCCALL | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 993 | CARL ECKLUND | Clearfield County, PA | Gas Property | Dec 2023 |
| 994 | CARL FREDERICK | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 995 | CARL H & ELEANOR FITZSIMMONS | Westmoreland County, PA | Gas Property | Dec 2023 |
| 996 | CARL L C | Armstrong County, PA | Gas Property | Dec 2023 |
| 997 | CARL M HAGGERTY | Indiana County, PA | Gas Property | Dec 2023 |
| 998 | CARL PATCHIN | Cambria County, PA | Gas Property | Dec 2023 |
| 999 | CARL R EARHART | Westmoreland County, PA | Gas Property | Dec 2016 |
| 1000 | CARL R PROPER | Venango County, PA | Oil & Gas Property | Dec 2023 |