| 401 | WILLIAM | Westmoreland County, PA | Gas Property | Dec 2024 |
| 402 | WILLIAM | Westmoreland County, PA | Gas Property | Dec 2024 |
| 403 | WILLIAM A GEORGE ET | Indiana County, PA | Gas Property | Dec 2024 |
| 404 | WILLIAM A GIBSON JR | Indiana County, PA | Gas Property | Dec 2024 |
| 405 | WILLIAM A PEOPLES | Armstrong County, PA | Gas Property | Dec 2024 |
| 406 | WILLIAM B | Greene County, PA | Gas Property | Dec 2024 |
| 407 | WILLIAM B | Jefferson County, PA | Oil & Gas Property | Dec 2024 |
| 408 | WILLIAM B DRUMMOND | Jefferson County, PA | Gas Property | Dec 2024 |
| 409 | WILLIAM BARTHOLOMEW | Greene County, PA | Oil & Gas Property | Dec 2024 |
| 410 | WILLIAM BAUGHMAN | Jefferson County, PA | Gas Property | Dec 2024 |
| 411 | WILLIAM BORBONUS | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 412 | WILLIAM BUTERBAUGH | Cambria County, PA | Oil & Gas Property | Dec 2024 |
| 413 | WILLIAM C | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 414 | WILLIAM C HOUSER JR (159 AC) | Indiana County, PA | Gas Property | Dec 2024 |
| 415 | WILLIAM C WIDDOWSON | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 416 | WILLIAM D MILLS | Fayette County, PA | Gas Property | Dec 2024 |
| 417 | WILLIAM E | Clearfield County, PA | Gas Property | Dec 2024 |
| 418 | WILLIAM E HOLLOBAUGH | Clarion County, PA | Gas Property | Dec 2024 |
| 419 | WILLIAM E MCCHESNEY | Warren County, PA | Gas Property | Dec 2024 |
| 420 | WILLIAM F CLEPPER ETUX | Armstrong County, PA | Oil & Gas Property | Oct 2025 |
| 421 | WILLIAM FLEMING 1 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 422 | WILLIAM G EICHMAN | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 423 | WILLIAM G SHE | Clearfield County, PA | Gas Property | Dec 2024 |
| 424 | WILLIAM GRAHAM | Westmoreland County, PA | Gas Property | Dec 2024 |
| 425 | WILLIAM H BUTERBAUGH FAMILY TRUST | Clearfield County, PA | Gas Property | Dec 2024 |
| 426 | WILLIAM H CONN | Venango County, PA | Gas Property | Dec 2024 |
| 427 | WILLIAM H RENSHAW ETUX | Armstrong County, PA | Gas Property | Dec 2024 |
| 428 | WILLIAM H SANGER | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 429 | WILLIAM HEN | Crawford County, PA | Gas Property | Dec 2024 |
| 430 | WILLIAM J | Clearfield County, PA | Gas Property | Dec 2024 |
| 431 | WILLIAM J | Armstrong County, PA | Gas Property | Dec 2024 |
| 432 | WILLIAM J | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 433 | WILLIAM J & FAYE C TODD | Mercer County, PA | Gas Property | Dec 2006 |
| 434 | WILLIAM LANE GRE | Greene County, PA | Gas Property | Oct 2025 |
| 435 | WILLIAM MCINTIRE | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 436 | WILLIAM OLSON | Jefferson County, PA | Gas Property | Dec 2024 |
| 437 | WILLIAM POLITO ( | Indiana County, PA | Gas Property | Dec 2024 |
| 438 | WILLIAM R & LINDA M DOVERSPIKE | Armstrong County, PA | Gas Property | Dec 2024 |
| 439 | WILLIAM S | Westmoreland County, PA | Gas Property | Dec 2024 |
| 440 | WILLIAM T EUWER ET AL | Indiana County, PA | Gas Property | Dec 2024 |
| 441 | WILLIAM V SPURLIN | Indiana County, PA | Gas Property | Dec 2024 |
| 442 | WILLIAM W LITKE ET | Clinton County, PA | Gas Property | Dec 2022 |
| 443 | WILLIAM WILLIAMS | Indiana County, PA | Gas Property | Dec 2024 |
| 444 | WILLIAMS | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 445 | WILLIAMS | Fayette County, PA | Gas Property | Dec 2024 |
| 446 | WILLIAMS | Venango County, PA | Oil & Gas Property | Dec 2004 |
| 447 | WILLIAMS | Butler County, PA | Gas Property | Aug 2024 |
| 448 | WILLIAMS | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 449 | WILLIAMS | Bradford County, PA | Gas Property | Oct 2025 |
| 450 | WILLIAMS | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 451 | WILLIAMS | Clearfield County, PA | Gas Property | Dec 2024 |
| 452 | WILLIAMS | Bradford County, PA | Gas Property | Oct 2025 |
| 453 | WILLIAMS D 0 | Susquehanna County, PA | Gas Property | Oct 2025 |
| 454 | WILLIAMSON | Armstrong County, PA | Gas Property | Dec 2024 |
| 455 | WILLIAMSON | Armstrong County, PA | Gas Property | Dec 2024 |
| 456 | WILLIAMSON BRA | Bradford County, PA | Gas Property | Oct 2025 |
| 457 | WILLIAMSON TRACT | Warren County, PA | Oil & Gas Property | Dec 2007 |
| 458 | WILLIS | Greene County, PA | Oil & Gas Property | Oct 2025 |
| 459 | WILLIS ELLIOTT | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 460 | WILLIS TRACY | Crawford County, PA | Gas Property | Dec 2024 |
| 461 | WILLISON | Washington County, PA | Gas Property | Oct 2025 |
| 462 | WILLOW GLENN 81 | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 463 | WILMA K LEIGHTY | Fayette County, PA | Gas Property | Dec 2024 |
| 464 | WILMOTH | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 465 | WILSON | Indiana County, PA | Gas Property | Dec 2024 |
| 466 | WILSON | Venango County, PA | Oil Property | Dec 2024 |
| 467 | WILSON | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 468 | WILSON | Westmoreland County, PA | Gas Property | Oct 2025 |
| 469 | WILSON 00 | Clearfield County, PA | Gas Property | Dec 2024 |
| 470 | WILSON 283 | Tioga County, PA | Gas Property | Oct 2025 |
| 471 | WILSON HINDMAN | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 472 | WILSON MILLER | Greene County, PA | Gas Property | Dec 2016 |
| 473 | WILSON UNIT | Butler County, PA | Gas Property | Oct 2025 |
| 474 | WIMMER | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 475 | WINDY HILL | Venango County, PA | Gas Property | Dec 2024 |
| 476 | WINDY HOLLOW LLC 00 | Indiana County, PA | Gas Property | Dec 2024 |
| 477 | WINDY OAKLAND | Clarion County, PA | Gas Property | Oct 2025 |
| 478 | WINFIELD MINERAL CO 1066 | Butler County, PA | Gas Property | Dec 2024 |
| 479 | WINGARD | Clarion County, PA | Gas Property | Dec 2024 |
| 480 | WINGER W | Warren County, PA | Oil & Gas Property | Dec 2015 |
| 481 | WINIFRED | Indiana County, PA | Gas Property | Dec 2024 |
| 482 | WINNER | Clinton County, PA | Gas Property | Oct 2025 |
| 483 | WINNER | Clinton County, PA | Gas Property | Jun 2025 |
| 484 | WINOGRODZKI | Indiana County, PA | Gas Property | Dec 2024 |
| 485 | WINSLOW | Jefferson County, PA | Gas Property | Dec 2024 |
| 486 | WINTER | Lycoming County, PA | Gas Property | Oct 2025 |
| 487 | WINTERS | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 488 | WISE | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 489 | WISE | Jefferson County, PA | Gas Property | Dec 2024 |
| 490 | WISE BRATTON | Clearfield County, PA | Gas Property | Dec 2024 |
| 491 | WISE BRATTON WILLIAMS KITCHEN | Clearfield County, PA | Oil & Gas Property | Dec 2024 |
| 492 | WISSINGER | Armstrong County, PA | Gas Property | Dec 2024 |
| 493 | WISSLER | Lycoming County, PA | Gas Property | Oct 2025 |
| 494 | WISSLER SOUTH UNIT | Lycoming County, PA | Gas Property | Oct 2025 |
| 495 | WISTAR SHAFFER | Sullivan County, PA | Gas Property | Oct 2025 |
| 496 | WITCO CORP B | Venango County, PA | Oil Property | Dec 2001 |
| 497 | WIVELL | Fayette County, PA | Gas Property | Dec 2024 |
| 498 | WIVELL | Tioga County, PA | Gas Property | Oct 2025 |
| 499 | WJ HYDE S | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 500 | WL DUNN CONST | Crawford County, PA | Oil & Gas Property | Dec 2024 |