Expand Energy Corporation, headquartered in Oklahoma City, is the largest independent natural gas producer in the U.S. based on net daily production. The company operates in the Appalachian Basin of the Marcellus Formation in Pennsylvania and West Virginia, as well as the Haynesville Shale in Northwestern Louisiana. In 2024, the company produced 3,758 MMcfe of natural gas per day. In 2024, 41% of production was from the Haynesville Shale, 48% of production was from Northeast Appalachia, and 11% of production was from Southwest Appalachia. As of December 31, 2024, the company had 20,800 Bcf of proved reserves. It also had interests in 8,000 gross productive wells. Wikipedia