Following graduation, Mike served as a Catholic Lay Volunteer for the Diocese of St. Thomas, providing emergency relief assistance to the victims of Hurricane Hugo. Later, he worked as the Program Director for the Alcoholism and Drug Abuse Association of Boston. Mike then entered Suffolk University Law School. While attending Suffolk, Mike clerked for Chief Justice Christopher Armstrong of the Massachusetts Appeals Court and worked for the Office of New Hampshire’s Public Defender.
After earning his Juris Doctor degree in 1996, Mike worked for Essex County District Attorney Kevin Burke. As an Assistant D.A., Mike prosecuted hundreds of cases involving the possession and distribution of drugs, domestic violence, assault and battery and robbery.
Mike serves on the Board of Directors for the Essex County Bar Association. He is the former national Co-Chair of the American Bar Association’s Committee on Re-entry and Collateral Consequences and is the current Chair of the ABA’s Legislative Committee. In 2007, the Massachusetts Bar Association named Representative Costello its Legislator of the Year.
Mike practices as a trial attorney in and around Boston, Massachusetts.
Mike was elected to the Newburyport City Council as a councilor-at-large in 1997 and, a year later, became Field Director for Congressman John Tierney’s (D-Salem) Campaign. Following Congressman Tierney’s successful election, Mike worked as the Chief of Staff for State Senator Joan Menard (D-Somerset), who was also Chair of the Massachusetts Democratic Party.
Mike was elected to the House of Representatives in November 2002. He serves the First Essex District, which includes the Cities of Newburyport and Amesbury and The Town of Salisbury.
Representative Costello is currently serving his first term as the Chairman of the Joint Committee on Financial Services. He served on Governor Deval Patrick’s CORI Reform Commission and was a member of the Governor’s Anti-Crime Council. Representative Costello is also the House delegate to the New England Board of Higher Education.
As Chairman of the Joint Committee on Public Safety & Homeland Security, Representative Costello led the effort to modernize the state’s 911 system. The legislation that he sponsored captured millions of dollars in additional revenue from mobile devices, provided incentives for the regionalization of emergency response centers and created new grant programs for E911 equipment and first responder training.
As Chairman of the Joint Committee on Financial Services, Representative Costello has oversight of state banks and credit unions with more than $350 billion in assets, major health insurance plans and three of the largest property insurers in the country. Recently, he authored anti-foreclosure legislation that provides first-of-its-kind protection to homeowners facing foreclosure. The bill requires lenders who originated risky mortgages to evaluate the net present value of a loan modification and to offer borrowers that option if it is worth more than the bank’s anticipated recovery from foreclosing.
At the national level, Representative Costello has assumed leadership roles in developing policy on criminal justice issues. He is the Vice-Chair of the National Conference of State Legislature’s Law and Criminal Justice Committee, and he serves on the Council of State Government’s Criminal Justice Board of Advisors.
Mike is the son of former State Senator Nicholas Costello and Cynthia Costello. He is married to Kerrin D’Archangelo of Haverhill, and they live in Newburyport with their daughter Kate and son Harry.