Expand Energy Corporation functions as an independent entity primarily focused on the discovery and extraction of energy resources throughout the United States. Its core operations involve the acquisition, exploration, and subsequent development of properties to produce crude oil, natural gas, and associated liquid hydrocarbons from subterranean geological formations. The company maintains significant interests in key natural gas production areas, specifically within Pennsylvania's northern Appalachian Basin (Marcellus Shale) and northwestern Louisiana (Haynesville/Bossier Shales).