Biosketch
Tim Sweeney is chairman, president and CEO of Liberty Mutual Insurance, the ninth-largest global property and casualty insurer. He became president and CEO in 2023, and was elected chairman of Liberty Mutual Holding Company Inc., the company’s parent, in 2025.
Previously, he was president of Liberty Mutual, overseeing the company’s three global business units spanning personal and small commercial insurance, reinsurance and commercial and specialty insurance, as well as management of its global investable assets. Since joining Liberty Mutual in 1993 as a director in the corporate strategy group, Sweeney has held leadership roles of increasing responsibility that have helped shape the company’s growth.
He serves on the board of directors of the Massachusetts Competitive Partnership and the Statue of Liberty-Ellis Island Foundation, and on the executive committee of the Massachusetts Business Roundtable. He is also a member of the Massachusetts Institute of Technology (MIT) president’s CEO advisory board, the Business Council and the Geneva Association. In addition, Sweeney chairs the annual Aspire fundraiser at Massachusetts General Hospital, which supports social services and development opportunities for children and young adults on the autism spectrum.
Sweeney, who grew up in Lowell and graduated from Lowell High School, holds a bachelor’s degree in economics from Harvard University and an MBA from Harvard Business School.