| 1001 | CALMITCH BRA | Bradford County, PA | Gas Property | Dec 2025 |
| 1002 | CALVIN I NIEMEYER | Erie County, PA | Gas Property | Dec 2019 |
| 1003 | CALVIN RO | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 1004 | CALVIN SHAFFER | Jefferson County, PA | Gas Property | Dec 2025 |
| 1005 | CALVIN SMITH HEIRS | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1006 | CAMERON | Indiana County, PA | Gas Property | Dec 2025 |
| 1007 | CAMERON JOHNSTON | Clearfield County, PA | Gas Property | Dec 2025 |
| 1008 | CAMP COMFORT 07 185 | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1009 | CAMP LEASE | McKean County, PA | Oil & Gas Property | Dec 2003 |
| 1010 | CAMPBELL | Indiana County, PA | Gas Property | Dec 2025 |
| 1011 | CAMPBELL | Clarion County, PA | Gas Property | Dec 2020 |
| 1012 | CAMPBELL | Indiana County, PA | Gas Property | Dec 2025 |
| 1013 | CAMPBELL | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1014 | CAMPBELL | Jefferson County, PA | Gas Property | Dec 2025 |
| 1015 | CAMPBELL | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 1016 | CAMPBELL ERCOLE | Bradford County, PA | Gas Property | Dec 2025 |
| 1017 | CAMPBELL FARMS | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 1018 | CAMPBELL JACOB UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 1019 | CAMPBELL UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 1020 | CAMPISE | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 1021 | CANESTRALE | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 1022 | CANESTRALE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 1023 | CANIS MAJOR | Butler County, PA | Gas Property | Dec 2025 |
| 1024 | CANNELLA | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1025 | CANNIZZARO | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 1026 | CANNON | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 1027 | CANO | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 1028 | CANTERBURY | Armstrong County, PA | Gas Property | Dec 2025 |
| 1029 | CANTONI 00 | Allegheny County, PA | Oil & Gas Property | Dec 2025 |
| 1030 | CAPIZZI | Indiana County, PA | Gas Property | Dec 2025 |
| 1031 | CAPPUCCI | Wyoming County, PA | Gas Property | Dec 2025 |
| 1032 | CAPRIO 07 077 | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1033 | CAPTAIN | Fayette County, PA | Gas Property | Dec 2025 |
| 1034 | CAPTAIN JACK SPARROW | Washington County, PA | Gas Property | Dec 2025 |
| 1035 | CAPTAIN USA | Washington County, PA | Gas Property | Dec 2025 |
| 1036 | CARBONARA | Fayette County, PA | Gas Property | Dec 2024 |
| 1037 | CARDINE | Fayette County, PA | Gas Property | Dec 2025 |
| 1038 | CARDON M-621 | Clearfield County, PA | Gas Property | Dec 2025 |
| 1039 | CAREY R 00 | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1040 | CARJA INC | Armstrong County, PA | Gas Property | Dec 2025 |
| 1041 | CARKIN R | Mercer County, PA | Gas Property | Dec 2025 |
| 1042 | CARL A SPEVETZ ET UX | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 1043 | CARL BAILEY | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 1044 | CARL BE | Erie County, PA | Gas Property | Dec 2025 |
| 1045 | CARL DECKER | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1046 | CARL E HARKLEROAD | Clearfield County, PA | Gas Property | Dec 2025 |
| 1047 | CARL E MCCALL | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1048 | CARL ECKLUND | Clearfield County, PA | Gas Property | Dec 2025 |
| 1049 | CARL FREDERICK | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1050 | CARL H & ELEANOR FITZSIMMONS | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1051 | CARL L C | Armstrong County, PA | Gas Property | Dec 2025 |
| 1052 | CARL M HAGGERTY | Indiana County, PA | Gas Property | Dec 2024 |
| 1053 | CARL PATCHIN | Cambria County, PA | Gas Property | Dec 2025 |
| 1054 | CARL R EARHART | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1055 | CARL R PROPER | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 1056 | CARL W ELLINGER ETUX | Clearfield County, PA | Gas Property | Dec 2025 |
| 1057 | CARL W SNYDER | Armstrong County, PA | Gas Property | Dec 2025 |
| 1058 | CARL WALKER WAYNE D BRAUGHLER ET UX | Indiana County, PA | Gas Property | Dec 2025 |
| 1059 | CARLIN | Venango County, PA | Oil Property | Dec 1999 |
| 1060 | CARLIN | Centre County, PA | Gas Property | Dec 2025 |
| 1061 | CARLISLE RUTH UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 1062 | CARLSON | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1063 | CARLSON | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1064 | CARLSON | Warren County, PA | Oil & Gas Property | Dec 2011 |
| 1065 | CARMALT BURNS | Jefferson County, PA | Gas Property | Dec 2025 |
| 1066 | CARNEGIE NATURAL GAS CO | Fayette County, PA | Gas Property | Dec 2024 |
| 1067 | CARNS DONALD | Washington County, PA | Gas Property | Dec 2025 |
| 1068 | CARNS DONALD UNIT | Washington County, PA | Gas Property | Dec 2025 |
| 1069 | CARNS UNIT | Washington County, PA | Oil & Gas Property | Dec 2013 |
| 1070 | CAROFF | Indiana County, PA | Gas Property | Dec 2025 |
| 1071 | CAROLYN & GEORGE MORRIS | Greene County, PA | Gas Property | Dec 2020 |
| 1072 | CAROLYN KLINGENSMITH | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1073 | CAROLYN PARK | Indiana County, PA | Gas Property | Dec 2025 |
| 1074 | CARPENETTI R | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1075 | CARPENTER | Fayette County, PA | Gas Property | Dec 2025 |
| 1076 | CARPENTER | Greene County, PA | Gas Property | Dec 2025 |
| 1077 | CARPENTER | Crawford County, PA | Gas Property | Dec 2025 |
| 1078 | CARPENTER 03 023 0 | Bradford County, PA | Gas Property | Dec 2025 |
| 1079 | CARPENTERTOWN COAL & CO | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 1080 | CARR | Bradford County, PA | Gas Property | Dec 2025 |
| 1081 | CARR | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1082 | CARR S BRA 2H | Bradford County, PA | Gas Property | Dec 2025 |
| 1083 | CARRAR | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1084 | CARRINGTON | Warren County, PA | Oil & Gas Property | Dec 2014 |
| 1085 | CARROLL | Clarion County, PA | Oil Property | Dec 1992 |
| 1086 | CARROLL | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1087 | CARROLLS NURSERY | Crawford County, PA | Gas Property | Dec 2024 |
| 1088 | CARSON | Fayette County, PA | Gas Property | Dec 2025 |
| 1089 | CARSON | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1090 | CARSON | Washington County, PA | Oil Property | Dec 2001 |
| 1091 | CARSON UNIT | Butler County, PA | Oil & Gas Property | Dec 2025 |
| 1092 | CARTER | Venango County, PA | Gas Property | Dec 2025 |
| 1093 | CARTER | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 1094 | CARTER | Washington County, PA | Oil & Gas Property | Jun 2012 |
| 1095 | CARTY | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1096 | CARTY WISEMAN 1 | Susquehanna County, PA | Gas Property | Dec 2025 |
| 1097 | CASHUP | Venango County, PA | Oil Property | Dec 2025 |
| 1098 | CASTLE | Bradford County, PA | Gas Property | Dec 2025 |
| 1099 | CASTLE 01 047 0 | Bradford County, PA | Gas Property | Dec 2025 |
| 1100 | CASTLE BROOK | McKean County, PA | Oil & Gas Property | Dec 2024 |