| 1201 | CLARK | Clarion County, PA | Gas Property | Dec 2023 |
| 1202 | CLARK | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 1203 | CLARK | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1204 | CLARK | Indiana County, PA | Gas Property | Dec 2023 |
| 1205 | CLARK & ARMOUR | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1206 | CLARK & ARMOUR US DEPT | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1207 | CLARK 486 | Tioga County, PA | Gas Property | Sep 2024 |
| 1208 | CLARK 65 | Greene County, PA | Oil & Gas Property | Dec 2023 |
| 1209 | CLARK B MCLAUGHLIN | Indiana County, PA | Gas Property | Dec 2023 |
| 1210 | CLARK E RICH DC ETAL | Clearfield County, PA | Gas Property | Dec 2023 |
| 1211 | CLARK KLECKNER | Bradford County, PA | Gas Property | Sep 2024 |
| 1212 | CLARK UNIT | Susquehanna County, PA | Gas Property | Aug 2024 |
| 1213 | CLARK WHITACRE | Armstrong County, PA | Gas Property | Dec 2023 |
| 1214 | CLARKE | Bradford County, PA | Gas Property | Sep 2024 |
| 1215 | CLARKE | Fayette County, PA | Oil & Gas Property | Sep 2024 |
| 1216 | CLAUDE | Susquehanna County, PA | Gas Property | Sep 2024 |
| 1217 | CLAUDE F HORNE | Clinton County, PA | Gas Property | Dec 2023 |
| 1218 | CLAUDIA | Bradford County, PA | Gas Property | Sep 2024 |
| 1219 | CLAWSON | Westmoreland County, PA | Gas Property | Dec 2023 |
| 1220 | CLAWSON | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 1221 | CLAY PIT | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1222 | CLAYPOOLE | Armstrong County, PA | Gas Property | Sep 2024 |
| 1223 | CLAYSVILLE SPORTSMANS UNIT | Washington County, PA | Gas Property | Sep 2024 |
| 1224 | CLAYTON E ELKIN ET AL | Indiana County, PA | Gas Property | Dec 2023 |
| 1225 | CLAYTON ELKIN | Indiana County, PA | Gas Property | Dec 2023 |
| 1226 | CLAYTON MILLER | Indiana County, PA | Gas Property | Dec 2022 |
| 1227 | CLAYTON SUNDERLAND | Indiana County, PA | Gas Property | Dec 2023 |
| 1228 | CLDC (02-17 | Tioga County, PA | Gas Property | Sep 2024 |
| 1229 | CLEAR CREEK STATE FOREST | Jefferson County, PA | Gas Property | Sep 2024 |
| 1230 | CLEAR RUN STATE FOREST | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 1231 | CLEAR SPRING DAIRY | Bradford County, PA | Gas Property | Sep 2024 |
| 1232 | CLEARFIELD & JEFFERSON | Clearfield County, PA | Gas Property | Dec 2023 |
| 1233 | CLEARFIELD BITUMINOUS COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 1234 | CLEARFIELD BITUMINOUS COAL CO | Indiana County, PA | Gas Property | Dec 2023 |
| 1235 | CLEARFIELD/BITUM | Cambria County, PA | Oil & Gas Property | Dec 2023 |
| 1236 | CLEARVIEW HUNTING CLUB A | Lycoming County, PA | Gas Property | Sep 2024 |
| 1237 | CLEGG 722 | Lycoming County, PA | Gas Property | Sep 2024 |
| 1238 | CLEMMER | Fayette County, PA | Gas Property | Dec 2023 |
| 1239 | CLEPPER | Armstrong County, PA | Gas Property | Sep 2024 |
| 1240 | CLIFFORD GLAS | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 1241 | CLIFFORD H HUFFMAN | Armstrong County, PA | Gas Property | Dec 2023 |
| 1242 | CLIFFORD MAZE | Warren County, PA | Oil & Gas Property | Dec 2020 |
| 1243 | CLIFFORD P. FLEMING | Indiana County, PA | Gas Property | Dec 2023 |
| 1244 | CLINE | Monongalia County, WV | Gas Property | Sep 2024 |
| 1245 | CLINGER | Forest County, PA | Oil & Gas Property | Dec 2023 |
| 1246 | CLINGERMAN-THOMAS UNIT | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 1247 | CLINTON | Elk County, PA | Oil & Gas Property | Dec 2017 |
| 1248 | CLINTON VANHORN | Armstrong County, PA | Gas Property | Dec 2023 |
| 1249 | CLOPP | Elk County, PA | Oil & Gas Property | Dec 2023 |
| 1250 | CLOSSER SULLIVAN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1251 | CLOUGH LANDS TRUST WARRANT 5 | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 1252 | CLOUGH LEASE | Warren County, PA | Oil & Gas Property | Dec 2022 |
| 1253 | CLOUSE UNIT | Butler County, PA | Oil & Gas Property | Sep 2024 |
| 1254 | CLUTTER WFN3 | Washington County, PA | Oil & Gas Property | Sep 2024 |
| 1255 | CLYDE BROWN | Armstrong County, PA | Gas Property | Dec 2023 |
| 1256 | CLYDE BURNHAM | Erie County, PA | Gas Property | Dec 2023 |
| 1257 | CLYDE MCCONNAUGHEY JR | Indiana County, PA | Gas Property | Dec 2023 |
| 1258 | CLYDE MOHNEY | Jefferson County, PA | Gas Property | Dec 2023 |
| 1259 | CLYDE MUTH (M-631) 8 | Clearfield County, PA | Gas Property | Dec 2023 |
| 1260 | CM STORMER | Jefferson County, PA | Gas Property | Dec 2023 |
| 1261 | CNR EAST W | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1262 | CNX GAS COMPANY | Marshall County, WV | Oil & Gas Property | Sep 2024 |
| 1263 | CNX GH35 | Greene County, PA | Gas Property | Sep 2024 |
| 1264 | CNX LAND LLC RHL31 | Greene County, PA | Gas Property | Sep 2024 |
| 1265 | CNX MAJ12 | Greene County, PA | Gas Property | Sep 2024 |
| 1266 | CNX MOR31 | Washington County, PA | Gas Property | Sep 2024 |
| 1267 | CNX NV110 | Washington County, PA | Gas Property | Sep 2024 |
| 1268 | CNX RHL | Greene County, PA | Gas Property | Sep 2024 |
| 1269 | CNX RHL | Greene County, PA | Gas Property | Sep 2024 |
| 1270 | CNX RHL4 | Greene County, PA | Gas Property | Jul 2024 |
| 1271 | CNX WFN1 | Washington County, PA | Gas Property | Sep 2024 |
| 1272 | COASTAL | Fayette County, PA | Gas Property | Sep 2024 |
| 1273 | COASTAL/SMITH UNIT | Fayette County, PA | Gas Property | Sep 2024 |
| 1274 | COATES | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1275 | COATES | Bradford County, PA | Gas Property | Sep 2024 |
| 1276 | COATES SC | Warren County, PA | Oil Property | Dec 2016 |
| 1277 | COBB | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 1278 | COBB | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1279 | COBB-TULLAR | Potter County, PA | Oil & Gas Property | Dec 2023 |
| 1280 | COBURN | Venango County, PA | Oil Property | Dec 2020 |
| 1281 | COCHRAN | Jefferson County, PA | Gas Property | Dec 2023 |
| 1282 | COCHRAN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1283 | COCHRAN | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1284 | COCHRAN | Fayette County, PA | Gas Property | Sep 2024 |
| 1285 | COCHRAN | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 1286 | COCHRAN | Tioga County, PA | Gas Property | Sep 2024 |
| 1287 | COCHRAN CH | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1288 | COCHRAN CH4 | Warren County, PA | Oil & Gas Property | Dec 2023 |
| 1289 | COCHRAN EST (ENTERPRISE | Warren County, PA | Oil & Gas Property | Dec 2009 |
| 1290 | COCHRAN ET AL | Fayette County, PA | Gas Property | Dec 2023 |
| 1291 | COCHRAN UNIT 1H | Bradford County, PA | Gas Property | Sep 2024 |
| 1292 | COCHRANE/MESHANKO | Fayette County, PA | Oil & Gas Property | Dec 2023 |
| 1293 | COFFIELD/GOTTSCHALK NV34 | Washington County, PA | Gas Property | Sep 2024 |
| 1294 | COGAR | Washington County, PA | Gas Property | Sep 2024 |
| 1295 | COGLEY | Armstrong County, PA | Gas Property | Dec 2023 |
| 1296 | COL PINE WARRANT | Forest County, PA | Oil & Gas Property | Dec 2012 |
| 1297 | COLCAM WYO | Wyoming County, PA | Gas Property | Sep 2024 |
| 1298 | COLD STREAM AFFILIATES | Clearfield County, PA | Gas Property | Sep 2024 |
| 1299 | COLE | Washington County, PA | Gas Property | Dec 2023 |
| 1300 | COLE | Butler County, PA | Gas Property | Dec 2023 |