Thomas G. Shack III Esq.

Comptroller of the Commonwealth

On May 15, 2015, Tom Shack was appointed the 18th Comptroller of the Commonwealth of Massachusetts. Created in 1922, the Comptroller’s office is a uniquely independent and apolitical overseer of more than $60 billion in governmental and other funding sources and twelve million business transactions annually. In addition, the Comptroller oversees the Commonwealth’s major audit functions ensuring security, transparency, accountability, and service delivery across all branches of state government. 

Comptroller Shack joined the office in 2012 as Assistant General Counsel and served in several senior leadership roles, most recently as Deputy Comptroller of the Commonwealth and Chief Operating Officer. 

Prior to joining the Comptroller’s staff, Tom spent eight years as Chief of Operations, Chief Financial Officer, and a Senior Assistant District Attorney in the Cape and Islands District Attorney’s Office where, in addition to his leadership role, he carried a full trial caseload focusing on major felonies and high-profile prosecutions before the Supreme Judicial Court. 

Tom received his Juris Doctorate from New England Law│Boston where he was Editor-in-Chief of the New England Journal on Criminal and Civil Confinement and received the Dean’s Award for meritorious achievement and service to the school. He also holds a B.A. in Political Science and an M.B.A. in Entrepreneurship and Management from The American University in Washington, D.C. 

In the community Tom lectures extensively on legal, business, and ethics related issues and is a former editor of the Massachusetts Law Review. He has taught at Boston University School of Law and is currently a Lecturer-in-Law at New England Law│Boston. 

Tom lives in Brookline, MA with his wife Monica Sullivan Shack and they have one daughter, Madeline, who is an aspiring architect.