| 4301 | KUNKLE | Indiana County, PA | Gas Property | Dec 2024 |
| 4302 | KUNSELMAN | Clarion County, PA | Gas Property | Dec 2024 |
| 4303 | KUNSMAN 2 | Clearfield County, PA | Gas Property | Dec 2024 |
| 4304 | KUNTZ | Jefferson County, PA | Gas Property | Dec 2024 |
| 4305 | KUNTZ | Jefferson County, PA | Gas Property | Dec 2024 |
| 4306 | KUPSCZNK UNIT | Susquehanna County, PA | Gas Property | Mar 2025 |
| 4307 | KURT H HAUFLER A | Lycoming County, PA | Gas Property | Mar 2025 |
| 4308 | KURTZ | Lawrence County, PA | Gas Property | Dec 2024 |
| 4309 | KURTZ | Lawrence County, PA | Oil & Gas Property | Dec 2024 |
| 4310 | KURUTZ UNIT 1 | Fayette County, PA | Gas Property | Mar 2025 |
| 4311 | KUSHEQUA | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 4312 | KUTEK | Fayette County, PA | Gas Property | Dec 2024 |
| 4313 | KUZIAK UNIT | Sullivan County, PA | Gas Property | Mar 2025 |
| 4314 | KYLANDER | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 4315 | KYLE | McKean County, PA | Oil & Gas Property | Dec 2020 |
| 4316 | KYNE UNIT | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 4317 | KYSER | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 4318 | L A MEYRAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 4319 | L BEAMER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 4320 | L BHUFF | Westmoreland County, PA | Gas Property | Dec 2024 |
| 4321 | L BURTS | Susquehanna County, PA | Gas Property | Nov 2023 |
| 4322 | L C GIBSON | Armstrong County, PA | Gas Property | Dec 2024 |
| 4323 | L CZIRJAK | Armstrong County, PA | Gas Property | Dec 2024 |
| 4324 | L E STARTZELL | Indiana County, PA | Gas Property | Dec 2024 |
| 4325 | L G DIXON | Indiana County, PA | Gas Property | Dec 2024 |
| 4326 | L H & MARGARET RHEA | Indiana County, PA | Gas Property | Dec 2024 |
| 4327 | L HITE | Cambria County, PA | Gas Property | Dec 2024 |
| 4328 | L J FEASEL | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4329 | L K FULTON1714 | Venango County, PA | Oil Property | Dec 2021 |
| 4330 | L LEGNOSKY | Crawford County, PA | Gas Property | Dec 2015 |
| 4331 | L M HILL | Armstrong County, PA | Gas Property | Dec 2024 |
| 4332 | L M SPENCER | Clearfield County, PA | Gas Property | Dec 2024 |
| 4333 | L MASENGALE 00 | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4334 | L PHILLIPS | Washington County, PA | Gas Property | Dec 2024 |
| 4335 | L RAMSEY | Clarion County, PA | Gas Property | Dec 2024 |
| 4336 | L ROSS 00 | Westmoreland County, PA | Gas Property | Dec 2024 |
| 4337 | L S WALKER & J K NEVLING | Clearfield County, PA | Gas Property | Dec 2023 |
| 4338 | L SNYDER | Butler County, PA | Oil & Gas Property | Dec 2024 |
| 4339 | L THOMPSON | Erie County, PA | Gas Property | Dec 2024 |
| 4340 | L W HICKS | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4341 | L WADDLE | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4342 | L&J EQUIPMENT | Fayette County, PA | Gas Property | Dec 2024 |
| 4343 | L&L CONSTRUCTION UNIT A | Bradford County, PA | Gas Property | Mar 2025 |
| 4344 | L&L PROPERTIES UNIT | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 4345 | L. KINGSLEY | Bradford County, PA | Gas Property | Mar 2025 |
| 4346 | L103 7H | Butler County, PA | Gas Property | Mar 2025 |
| 4347 | LA CARTE ENTERPRISES | Indiana County, PA | Gas Property | Dec 2024 |
| 4348 | LABUDA | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4349 | LACARTE ENTERPRISES | Indiana County, PA | Gas Property | Dec 2024 |
| 4350 | LACERTA | Butler County, PA | Gas Property | Mar 2025 |
| 4351 | LACKAWANNOCK JAMES | Mercer County, PA | Oil & Gas Property | Mar 2025 |
| 4352 | LACKAWANNOCK WENGERD | Mercer County, PA | Oil & Gas Property | Mar 2025 |
| 4353 | LACKO | Greene County, PA | Gas Property | Mar 2025 |
| 4354 | LADDIE NOEL | Venango County, PA | Oil & Gas Property | Dec 2024 |
| 4355 | LAKE CITY IND INC | Erie County, PA | Gas Property | Dec 2023 |
| 4356 | LALLEY | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 4357 | LAMAR TRUST | Greene County, PA | Gas Property | Mar 2025 |
| 4358 | LAMB FARM | Venango County, PA | Oil Property | Dec 2020 |
| 4359 | LAMB FARM (WITCO CORP) BL | Venango County, PA | Oil Property | Dec 2000 |
| 4360 | LAMBERT | Venango County, PA | Oil & Gas Property | Dec 2023 |
| 4361 | LAMBERT FARMS | Sullivan County, PA | Gas Property | Mar 2025 |
| 4362 | LAMBERT R | Susquehanna County, PA | Gas Property | Mar 2025 |
| 4363 | LAMONT | Elk County, PA | Oil & Gas Property | Dec 2019 |
| 4364 | LAMOREE | Warren County, PA | Gas Property | Dec 2024 |
| 4365 | LAMPERSKI NV58 | Washington County, PA | Gas Property | Mar 2025 |
| 4366 | LAMPERSKI UNIT | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 4367 | LAMPMAN | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 4368 | LANAGER | Clearfield County, PA | Gas Property | Dec 2024 |
| 4369 | LANCO | Greene County, PA | Gas Property | Mar 2025 |
| 4370 | LAND MGMT ET AL | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 4371 | LANDFRIED | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 4372 | LANDGRAF | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 4373 | LANDMAN | Fayette County, PA | Gas Property | Dec 2024 |
| 4374 | LANDMESSER BRA | Bradford County, PA | Gas Property | Apr 2024 |
| 4375 | LANE | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4376 | LANFRANKIE | Indiana County, PA | Gas Property | Dec 2024 |
| 4377 | LANGLEY | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 4378 | LANGLEY | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 4379 | LANGMAN | Venango County, PA | Gas Property | Dec 2024 |
| 4380 | LANSING D WETMORE | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 4381 | LANTZ | Erie County, PA | Oil & Gas Property | Dec 2024 |
| 4382 | LAPINSKI | Mercer County, PA | Gas Property | Dec 2024 |
| 4383 | LAPPE | Indiana County, PA | Gas Property | Dec 2024 |
| 4384 | LAROSA | Washington County, PA | Gas Property | Dec 2024 |
| 4385 | LARRY KALIKA | Erie County, PA | Gas Property | Dec 2024 |
| 4386 | LARRY S CREEK F & G | Lycoming County, PA | Gas Property | Mar 2025 |
| 4387 | LARRYS CREEK | Lycoming County, PA | Gas Property | Mar 2025 |
| 4388 | LARSON | McKean County, PA | Gas Property | Dec 2009 |
| 4389 | LARSON | Centre County, PA | Gas Property | Dec 2024 |
| 4390 | LARUE C 0 | Susquehanna County, PA | Gas Property | Mar 2025 |
| 4391 | LASCO UNIT MIRABELLI 1 LASCO 1H | Wyoming County, PA | Gas Property | Mar 2025 |
| 4392 | LASH | Westmoreland County, PA | Oil & Gas Property | Mar 2025 |
| 4393 | LASH | Armstrong County, PA | Gas Property | Mar 2025 |
| 4394 | LASH | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4395 | LASHER | Wyoming County, PA | Gas Property | Mar 2025 |
| 4396 | LASSINGER UNIT | Butler County, PA | Oil & Gas Property | Mar 2025 |
| 4397 | LATHROP FARM TRUST UNIT | Susquehanna County, PA | Gas Property | Mar 2025 |
| 4398 | LATROBE BREWING | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 4399 | LATROBE-WIMMER | Westmoreland County, PA | Gas Property | Dec 2024 |
| 4400 | LATSHAW | Venango County, PA | Oil Property | Dec 2015 |