SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, natural gas, and natural gas liquids in the state of Texas. As of February 24, 2022, it had 492.0 million barrels of oil equivalent of estimated proved reserves. It also has working interests in 825 gross productive oil wells and 483 gross productive gas wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.