The Williams Cos., Inc. operates as an energy infrastructure company, which explores, produces, transports, sells and processes natural gas and petroleum products. It operates through the following segments: Transmission and Gulf of Mexico; Northeast G&P; and West. Read More The Transmission and Gulf of Mexico segment comprises of interstate natural gas pipelines, Transco and Northwest Pipeline, as well as natural gas gathering and processing and crude oil production handling and transportation assets in the Gulf Coast region. The Northeast G&P segment includes midstream gathering, processing, and fractionation businesses in the Marcellus Shale region primarily in Pennsylvania and New York, and the Utica Shale region of eastern Ohio. The West segment consists of gas gathering, processing, and treating operations in the Rocky Mountain region of Colorado and Wyoming, the Barnett Shale region of north-central Texas, the Eagle Ford Shale region of south Texas, the Haynesville Shale region of northwest Louisiana, and the Mid-Continent region which includes the Anadarko, Arkoma, and Permian basins. The company was founded by David Williams and Miller Williams in 1908 and is headquartered in Tulsa, OK. The listed name for WMB is Williams Companies Inc.