Thomas J. Tierney is a recognized leader in serving the nonprofit sector. In 1999 he co-founded the Bridgespan Group, an independent,
nonprofit organization designed to provide general management consulting services to foundations and other nonprofits.

He previously was CEO of Bain & Company until stepping down in 2000. A native of California, he received his B.A. in Economics from the University of California at Davis, and later attended Harvard Business School where he received his M.B.A. In 2002 he co-authored Aligning the Stars, which was published by Harvard Business School Press.

Thomas is a director of e-Bay as well as many nonprofit organizations including the United Way Massachusetts Bay, and the California Nature Conservancy. He is also a supporter of The American Ireland Fund.

Thomas, a fifth-generation Irish-American, credits his philanthropy to his Irish heritage, which he says “influences my outlook on life, my commitment to people and place, my family orientation and even the twinkle in my eye.” He is married with two children.