Business 100 - 2013

Michael Sheehan/Hill Holliday

Mike Sheehan is chairman of Hill Holliday, the 12th largest advertising agency in America. He served as CEO from 2003-2013.

Hill Holliday has an impressive catalogue of clients including Dunkin’ Donuts, Bank of America, Cadillac and Major League Baseball. Mike began his career as a copywriter, winning the One Show Gold award and a Cannes Lion at just 25, and in 1996 was named Adweek’s National Creative Director of the Year.

He attended the United States Naval Academy and graduated from Saint Anselm College in 1982 with a BA in English. In 2011, Saint Anselm awarded him an Honorary Doctor of Laws degree. Currently, he serves on the boards of ChoiceStream, Catholic Charities of the Archdiocese of Boston, Thayer Academy, and One Fund Boston, Inc. A second-generation Irish-American, Mike traces his ancestral roots to Castleisland, County Kerry on his father’s side and Glenfarne, County Leitrim on his mother’s. He is also a member of The American Ireland Fund. He lives in Norwell, Massachusetts with his wife, Maureen, and two children.