| 1501 | COVINGTON | Bradford County, PA | Gas Property | May 2026 |
| 1502 | COVINGTON PROSPECT PAD R (WATKINS) 1 | Tioga County, PA | Gas Property | Jun 2026 |
| 1503 | COWDEN | Washington County, PA | Oil & Gas Property | May 2026 |
| 1504 | COWDEN | Washington County, PA | Oil & Gas Property | Jun 2026 |
| 1505 | COWDEN | Washington County, PA | Oil & Gas Property | May 2026 |
| 1506 | COWDEN WILLIAM UNIT | Washington County, PA | Gas Property | Jun 2026 |
| 1507 | COX COX 1 | McKean County, PA | Gas Property | Dec 2025 |
| 1508 | COYLE BRA | Bradford County, PA | Gas Property | Jun 2026 |
| 1509 | COYLE SOUTH | Susquehanna County, PA | Gas Property | Jun 2026 |
| 1510 | COYNE-SLAGLE UNIT | Venango County, PA | Gas Property | Dec 2025 |
| 1511 | COYOTE RUN | Bradford County, PA | Gas Property | Jun 2026 |
| 1512 | COZY | Crawford County, PA | Gas Property | Dec 2025 |
| 1513 | CP 3H | Washington County, PA | Gas Property | Jun 2026 |
| 1514 | CP 4H | Washington County, PA | Gas Property | Jun 2026 |
| 1515 | CP FOGLE F | Forest County, PA | Oil Property | Dec 2025 |
| 1516 | CP UNIT | Venango County, PA | Gas Property | Dec 2025 |
| 1517 | CP UNIT | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 1518 | CRAFT C | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1519 | CRAIG | Erie County, PA | Oil & Gas Property | Dec 2025 |
| 1520 | CRAIG LASH UNIT | Westmoreland County, PA | Gas Property | Jun 2026 |
| 1521 | CRAIG NT | Indiana County, PA | Gas Property | Dec 2025 |
| 1522 | CRAIGE | Susquehanna County, PA | Gas Property | Jun 2026 |
| 1523 | CRAIN | Bradford County, PA | Gas Property | Jun 2026 |
| 1524 | CRAMER | Susquehanna County, PA | Gas Property | Jun 2026 |
| 1525 | CRANE | Bradford County, PA | Gas Property | Jun 2026 |
| 1526 | CRANE J 0 | Susquehanna County, PA | Gas Property | Jun 2026 |
| 1527 | CRANK 03 067 | Bradford County, PA | Gas Property | Jun 2026 |
| 1528 | CRANRUN | Bradford County, PA | Gas Property | Jun 2026 |
| 1529 | CRATTY | Butler County, PA | Gas Property | Jun 2026 |
| 1530 | CRATTY B UNIT 1H | Butler County, PA | Gas Property | Jun 2026 |
| 1531 | CRAVAT COAL B UNIT | Washington County, PA | Gas Property | Jun 2026 |
| 1532 | CRAWFORD | Elk County, PA | Oil & Gas Property | Dec 2018 |
| 1533 | CRAWFORD | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1534 | CRAWFORD | Bradford County, PA | Gas Property | Jun 2026 |
| 1535 | CRAWFORD | Mercer County, PA | Gas Property | Dec 2025 |
| 1536 | CRAWFORD | Armstrong County, PA | Gas Property | Dec 2025 |
| 1537 | CREE | Greene County, PA | Oil & Gas Property | Jun 2026 |
| 1538 | CREIGHTON | Washington County, PA | Gas Property | Dec 2025 |
| 1539 | CREW-LEVICK (MCCOOL) | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1540 | CREWE | Armstrong County, PA | Gas Property | Dec 2025 |
| 1541 | CRICK | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1542 | CRIMALDI | Cambria County, PA | Gas Property | Dec 2025 |
| 1543 | CRISPEN H | Mercer County, PA | Gas Property | Dec 2025 |
| 1544 | CRITZER | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1545 | CROASMUN | Cambria County, PA | Gas Property | Dec 2025 |
| 1546 | CROCKER | Warren County, PA | Gas Property | Dec 2025 |
| 1547 | CROFTCHECK | Fayette County, PA | Gas Property | Dec 2025 |
| 1548 | CROFTCHECK 1 | Fayette County, PA | Gas Property | Dec 2025 |
| 1549 | CROSBY | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 1550 | CROSBY 00 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 1551 | CROSLEY | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1552 | CROSS CREEK C | Washington County, PA | Oil & Gas Property | Jun 2026 |
| 1553 | CROSSETT | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1554 | CROSSGATES INC (FMLY J C RINN) | Indiana County, PA | Gas Property | Dec 2025 |
| 1555 | CROTALLO | Armstrong County, PA | Gas Property | Dec 2025 |
| 1556 | CROTHERS | Washington County, PA | Oil Property | Dec 2000 |
| 1557 | CROUSE MOR14 | Greene County, PA | Gas Property | Jun 2026 |
| 1558 | CROUSHORE | Fayette County, PA | Oil & Gas Property | Jun 2026 |
| 1559 | CROWL C | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 1560 | CROWNOVER | Armstrong County, PA | Gas Property | Dec 2025 |
| 1561 | CROYLE 00 | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 1562 | CRUM NV55 | Washington County, PA | Gas Property | Jun 2026 |
| 1563 | CRUTTENDEN | Tioga County, PA | Gas Property | Jun 2026 |
| 1564 | CRYSTAL | Bradford County, PA | Gas Property | Jun 2026 |
| 1565 | CRYTZER | Armstrong County, PA | Gas Property | Jun 2026 |
| 1566 | CSI 2H | Bradford County, PA | Gas Property | Jun 2026 |
| 1567 | CSI 5H | Bradford County, PA | Gas Property | Jun 2026 |
| 1568 | CUBBON | Venango County, PA | Oil Property | Dec 1997 |
| 1569 | CUBBON | Venango County, PA | Gas Property | Dec 2025 |
| 1570 | CUBBON | Venango County, PA | Oil & Gas Property | Dec 2025 |
| 1571 | CUBBON LUMBER CO | Warren County, PA | Gas Property | Dec 2025 |
| 1572 | CULBERTSON | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1573 | CULBERTSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 1574 | CUMBERLAND | Greene County, PA | Gas Property | Dec 2025 |
| 1575 | CUMMINGS 823 | Tioga County, PA | Gas Property | Jun 2026 |
| 1576 | CUMMINGS LUMBER 01 081 | Bradford County, PA | Gas Property | Jun 2026 |
| 1577 | CUNDARI | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1578 | CUNNINGHAM | Venango County, PA | Oil Property | Dec 2014 |
| 1579 | CUPPER | Tioga County, PA | Gas Property | Jun 2026 |
| 1580 | CURRY | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 1581 | CURTIN | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1582 | CURTIN | Wyoming County, PA | Gas Property | Jun 2026 |
| 1583 | CURTIN UNIT | Bradford County, PA | Gas Property | Jun 2026 |
| 1584 | CURTIS | Erie County, PA | Gas Property | Dec 2025 |
| 1585 | CURTIS | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 1586 | CURTIS | Bradford County, PA | Gas Property | Jun 2026 |
| 1587 | CURTIS F POOLE | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 1588 | CURTIS LOT | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 1589 | CUSICK H | Mercer County, PA | Gas Property | Dec 2025 |
| 1590 | CUTHBERTSON | Bradford County, PA | Gas Property | Nov 2025 |
| 1591 | CW MORRIS | Crawford County, PA | Gas Property | Dec 2025 |
| 1592 | CYNTHIA BOND | Indiana County, PA | Gas Property | Dec 2025 |
| 1593 | CYNTHIA M KNISPEL A | Lycoming County, PA | Gas Property | Jun 2026 |
| 1594 | CYPHER | Butler County, PA | Gas Property | Jun 2026 |
| 1595 | CYPHER | Clarion County, PA | Gas Property | Dec 2025 |
| 1596 | CYPHERT | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 1597 | CZECH UNIT | Warren County, PA | Gas Property | Dec 2006 |
| 1598 | CZESNOWSKI | Erie County, PA | Gas Property | Dec 2025 |
| 1599 | D & J FARMS UNIT | Bradford County, PA | Gas Property | Jun 2026 |
| 1600 | D A WILCOX | Warren County, PA | Gas Property | Dec 2025 |