William F Sinnott

William Sinnott is a partner in Barrett & Singal’s Litigation practice. He has almost thirty years of legal experience as a line and supervisory municipal, state, and federal government attorney, as a successful private practitioner, and as a teacher and leader in the legal community. He advises and advocates for a diverse range of individuals and organizations including healthcare and pharmaceutical institutions and employees, contractors, universities, and government officers. Bill most recently served eight years as the Corporation Counsel of the City of Boston where he was head of the Law Department. In that capacity, he and his staff represented the City, the Mayor, the City Council, and all City Departments in all litigation and other legal matters. His law experience before that was principally as a prosecutor, including eleven years as an Assistant U.S. Attorney in Boston, during a period of which he served as Chief of the New England Organized Crime Drug Enforcement Task Force. As an Assistant U.S. Attorney, Bill tried dozens of cases in federal court involving narcotics, gang, organized crime, weapons, and financial crime violations. While serving as a state prosecutor, Bill represented the Commonwealth in hundreds of matters before appellate and trial courts. As a private practitioner, Bill secured judgments totaling millions of dollars in several Superior Court trials. Bill has also had a distinguished military career spanning 32 years with the United States Marine Corps, from which he retired as a Colonel. This included active duty tours in Bosnia and Iraq, among other assignments. Suffolk University Law School, Boston, Massachusetts, J.D., 1985 College of the Holy Cross, Worcester, Massachusetts, B.A. in Classics, 1979 Boston Latin School, Boston, Massachusetts, High School Degree, 1975