Sean Douglas was born in Salt Lake City, Utah, on May 1, 1964. He married Patricia Ann Dickson in 1985. They are the parents of four children.
He received a bachelor of science degree in accounting from the University of Utah in 1988.
He has served in a number of Church callings, including full-time missionary in the Chile Concepción Mission, elders quorum president, area executive secretary, counselor in a bishopric, bishop, ward Young Men president, president of the Perú Lima South Mission from 2012 to 2015, and stake missionary preparation teacher. At the time of his call, Elder Douglas had been serving as a member of the Eleventh Quorum of the Seventy in the North America Southwest Area.
He is currently serving at Church headquarters as an area assistant to the North America Northeast Area and as an assistant executive director in the Family History Department.
After graduation, he worked as a certified public accountant for Price Waterhouse. Since 1990 he worked for Huntsman Corporation in various capacities, including division controller, treasurer, vice president of administration, vice president of corporate development, and, most recently, executive vice president and chief financial officer.