SM Energy Company is a company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in Denver, Colorado. The company was known as St. Mary Land & Exploration Company until 2010. The company's assets are in the Eagle Ford Group and the Permian Basin. As of December 31, 2021, the company had 492.0 million barrels of oil equivalent of estimated proved reserves, of which 41% was petroleum, 17% was natural gas liquids, and 42% was natural gas. The company is on the Forbes Global 2000 list, ranked 1973 in 2023. Wikipedia