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 David M. Losier

David M. Losier


Office Phone: 617.345.3644
Location: Boston, MA
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Mr. Losier has been with Burns & Levinson since 1999, and has nearly 20 years’ experience litigating in federal and state courts. His practice includes both complex civil litigation and felony criminal matters, as well as representing individuals and companies in state and federal investigations.

As a former Middlesex County assistant district attorney, Mr. Losier has a wealth of criminal law and jury trial experience. He prosecuted a wide variety of matters, including homicide, fraud, and civil rights cases in Superior Court. Additionally, he successfully briefed and argued cases in the Massachusetts Appeals Court and the Supreme Judicial Court of Massachusetts. As Deputy Director of district courts in Middlesex County, he supervised a staff of more than fifty attorneys. This experience is critical to his successful defense of clients in state and federal criminal matters.

In private practice, Mr. Losier represents officers of both public and private companies responding to allegations of breaches of fiduciary duty, misrepresentation or fraud. His criminal experience includes economic espionage, tax fraud, health care fraud cases including medical device cases, RICO matters, as well as parallel civil/administrative and criminal proceedings. Additionally, Mr. Losier regularly coordinates and leads internal corporate investigations at the request of officers or directors. He also represents a variety of individuals and companies in employment litigation involving non-competition, non-disclosure and wage payment issues.

Mr. Losier has successfully represented several secondary school, college and graduate school students in disciplinary actions brought by school judiciary panels, and has successfully resolved related criminal cases facilitating the students’ continued enrollment in school.

Significant Cases:

Additional Information:




  • 3/30/2010, WTKK - Jay Severin show
    David Losier was interviewed by Jay Severin regarding the pending anti-bullying law.
  • 7/30/2007, WTKK - Jay Severin show
    David Losier discussed with Jay the elements of crime and prosecution in the context of the hearings involving US Attorney General Alberto Gonzales. David Losier Interview
  • 11/20/2004, The Boston Globe - "Slaying Victim had Fled a Troubled Past"
    David Losier was quoted in this article by Kathleen Burge and Michael Levenson.

Recent Articles and Publications:

USA Patriot Act
White Paper, Spring 2002

Speaking Engagements:

Boston Bar Association Panel Discussion, 11.16.2011
Location: Boston, MA
Role: Moderator
Topic: Subpoenas and Search Warrants

More info

Boston Bar Assocation - Criminal Law Section Event, 4.27.2011
Location: Boston Bar Association 16 Beacon Street, Boston
Role: Moderator
Topic: The CSI Effect: Fact or Fiction?

Dental Seminar, 3.18.2011
Location: Burns & Levinson LLP, 125 Summer Street, Boston MA
Role: Moderator
Topic: Avoiding the Pitfalls of Dental Practice Transitions

Criminal Justice Program, 12.14.2009
Location: Boston Bar Association
Role: Moderator
Topic: Legislation filed by the Governor relating to mandatory minimum sentences and post-release supervision issues