| 1201 | CLAIR B | Indiana County, PA | Gas Property | Dec 2024 |
| 1202 | CLAIR CRATTY | Butler County, PA | Gas Property | Mar 2025 |
| 1203 | CLAIR E. WALTERMIRE | Indiana County, PA | Gas Property | Dec 2024 |
| 1204 | CLAIR FULMER | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 1205 | CLAIR L. FRYE | Westmoreland County, PA | Gas Property | Dec 2024 |
| 1206 | CLAIR SWEITZER | Clarion County, PA | Gas Property | Dec 2024 |
| 1207 | CLAPP TRACT | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1208 | CLAPPER | Susquehanna County, PA | Gas Property | Mar 2025 |
| 1209 | CLARA | Potter County, PA | Oil & Gas Property | Dec 2024 |
| 1210 | CLARA D SEANOR | Westmoreland County, PA | Gas Property | Dec 2024 |
| 1211 | CLARA E RUGH (FMLY J | Indiana County, PA | Gas Property | Dec 2024 |
| 1212 | CLARA JACQUES | Fayette County, PA | Gas Property | Dec 2016 |
| 1213 | CLARE MARSHALL | Indiana County, PA | Gas Property | Dec 2024 |
| 1214 | CLARENCE | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 1215 | CLARENCE A KEISER | Clearfield County, PA | Gas Property | Dec 2024 |
| 1216 | CLARENCE HOOD A10 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1217 | CLARENCE V & HELEN M BOYD | Erie County, PA | Gas Property | Dec 2024 |
| 1218 | CLARK | Armstrong County, PA | Gas Property | Dec 2024 |
| 1219 | CLARK | Mercer County, PA | Gas Property | Dec 2024 |
| 1220 | CLARK | Clarion County, PA | Gas Property | Dec 2024 |
| 1221 | CLARK | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 1222 | CLARK | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1223 | CLARK | Indiana County, PA | Gas Property | Dec 2024 |
| 1224 | CLARK & ARMOUR | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1225 | CLARK & ARMOUR US DEPT | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1226 | CLARK 486 | Tioga County, PA | Gas Property | Mar 2025 |
| 1227 | CLARK 65 | Greene County, PA | Oil & Gas Property | Dec 2024 |
| 1228 | CLARK B MCLAUGHLIN | Indiana County, PA | Gas Property | Dec 2024 |
| 1229 | CLARK E RICH DC ETAL | Clearfield County, PA | Gas Property | Dec 2024 |
| 1230 | CLARK KLECKNER | Bradford County, PA | Gas Property | Mar 2025 |
| 1231 | CLARK UNIT | Susquehanna County, PA | Gas Property | Mar 2025 |
| 1232 | CLARK WHITACRE | Armstrong County, PA | Gas Property | Dec 2024 |
| 1233 | CLARKE | Bradford County, PA | Gas Property | Mar 2025 |
| 1234 | CLARKE | Fayette County, PA | Oil & Gas Property | Mar 2025 |
| 1235 | CLAUDE | Susquehanna County, PA | Gas Property | Mar 2025 |
| 1236 | CLAUDE F HORNE | Clinton County, PA | Gas Property | Dec 2024 |
| 1237 | CLAUDIA | Bradford County, PA | Gas Property | Mar 2025 |
| 1238 | CLAWSON | Westmoreland County, PA | Gas Property | Dec 2024 |
| 1239 | CLAWSON | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 1240 | CLAY PIT | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1241 | CLAYPOOLE | Armstrong County, PA | Gas Property | Mar 2025 |
| 1242 | CLAYSVILLE SPORTSMANS UNIT | Washington County, PA | Gas Property | Mar 2025 |
| 1243 | CLAYTON E ELKIN ET AL | Indiana County, PA | Gas Property | Dec 2024 |
| 1244 | CLAYTON ELKIN | Indiana County, PA | Gas Property | Dec 2024 |
| 1245 | CLAYTON MILLER | Indiana County, PA | Gas Property | Dec 2022 |
| 1246 | CLAYTON SUNDERLAND | Indiana County, PA | Gas Property | Dec 2024 |
| 1247 | CLDC (02-17 | Tioga County, PA | Gas Property | Mar 2025 |
| 1248 | CLEAR CREEK STATE FOREST | Jefferson County, PA | Gas Property | Mar 2025 |
| 1249 | CLEAR RUN STATE FOREST | Jefferson County, PA | Oil & Gas Property | Dec 2024 |
| 1250 | CLEAR SPRING DAIRY | Bradford County, PA | Gas Property | Mar 2025 |
| 1251 | CLEARFIELD & JEFFERSON | Clearfield County, PA | Gas Property | Dec 2024 |
| 1252 | CLEARFIELD BITUMINOUS COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 1253 | CLEARFIELD BITUMINOUS COAL CO | Indiana County, PA | Gas Property | Dec 2024 |
| 1254 | CLEARFIELD/BITUM | Cambria County, PA | Oil & Gas Property | Dec 2024 |
| 1255 | CLEARVIEW HUNTING CLUB A | Lycoming County, PA | Gas Property | Mar 2025 |
| 1256 | CLEGG 722 | Lycoming County, PA | Gas Property | Mar 2025 |
| 1257 | CLEMENTE | Greene County, PA | Gas Property | Mar 2025 |
| 1258 | CLEMMER | Fayette County, PA | Gas Property | Dec 2024 |
| 1259 | CLEPPER | Armstrong County, PA | Gas Property | Mar 2025 |
| 1260 | CLIFFORD & CLETUS TROYER | Erie County, PA | Gas Property | Dec 2019 |
| 1261 | CLIFFORD GLAS | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1262 | CLIFFORD H HUFFMAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 1263 | CLIFFORD MAZE | Warren County, PA | Oil & Gas Property | Dec 2020 |
| 1264 | CLIFFORD P. FLEMING | Indiana County, PA | Gas Property | Dec 2024 |
| 1265 | CLINE | Monongalia County, WV | Gas Property | Mar 2025 |
| 1266 | CLINGER | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1267 | CLINGERMAN-THOMAS UNIT | Washington County, PA | Oil & Gas Property | Mar 2025 |
| 1268 | CLINTON | Elk County, PA | Oil & Gas Property | Dec 2017 |
| 1269 | CLINTON VANHORN | Armstrong County, PA | Gas Property | Dec 2024 |
| 1270 | CLOPP | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 1271 | CLOSSER SULLIVAN | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1272 | CLOUGH LANDS TRUST WARRANT 5 | Forest County, PA | Oil & Gas Property | Dec 2014 |
| 1273 | CLOUGH LEASE | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1274 | CLOUSE UNIT | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 1275 | CLUTTER WFN3 | Washington County, PA | Oil & Gas Property | Mar 2025 |
| 1276 | CLYDE BROWN | Armstrong County, PA | Gas Property | Dec 2024 |
| 1277 | CLYDE BURNHAM | Erie County, PA | Gas Property | Dec 2024 |
| 1278 | CLYDE MCCONNAUGHEY JR | Indiana County, PA | Gas Property | Dec 2024 |
| 1279 | CLYDE MOHNEY | Jefferson County, PA | Gas Property | Dec 2024 |
| 1280 | CLYDE MUTH (M-631) 8 | Clearfield County, PA | Gas Property | Dec 2024 |
| 1281 | CM STORMER | Jefferson County, PA | Gas Property | Dec 2024 |
| 1282 | CNR EAST W | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1283 | CNX GAS COMPANY | Marshall County, WV | Oil & Gas Property | Mar 2025 |
| 1284 | CNX GH35 | Greene County, PA | Gas Property | Mar 2025 |
| 1285 | CNX LAND LLC RHL31 | Greene County, PA | Gas Property | Mar 2025 |
| 1286 | CNX MAJ12 | Greene County, PA | Gas Property | Mar 2025 |
| 1287 | CNX MAM1 | Westmoreland County, PA | Gas Property | Mar 2025 |
| 1288 | CNX MOR31 | Washington County, PA | Gas Property | Mar 2025 |
| 1289 | CNX NV110 | Washington County, PA | Gas Property | Mar 2025 |
| 1290 | CNX RHL | Greene County, PA | Gas Property | Mar 2025 |
| 1291 | CNX RHL | Greene County, PA | Gas Property | Mar 2025 |
| 1292 | CNX RHL4 | Greene County, PA | Gas Property | Mar 2025 |
| 1293 | CNX WFN1 | Washington County, PA | Gas Property | Mar 2025 |
| 1294 | COASTAL | Fayette County, PA | Gas Property | Mar 2025 |
| 1295 | COATES | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1296 | COATES | Bradford County, PA | Gas Property | Mar 2025 |
| 1297 | COATES SC | Warren County, PA | Oil Property | Dec 2016 |
| 1298 | COBB | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1299 | COBB | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1300 | COBB-TULLAR | Potter County, PA | Oil & Gas Property | Dec 2024 |