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David J. Grimaldi

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Phone: (617) 661-1529
Fax: (857) 362-7889

929 Massachusetts Ave #200
Cambridge, Massachusetts 02139

Attorney Grimaldi’s practice is exclusively focused on criminal defense in state and federal court, and related misconduct proceedings in educational and professional settings. He has vast experience representing clients accused of crimes ranging from murder to tax fraud, rape to money laundering, motor vehicle homicide to larceny, and drug trafficking to racketeering. No matter the charge or how challenging the situation may feel to his clients, Attorney Grimaldi has the experience, ability, and desire to obtain the absolute best possible result for his clients.

One measure of Attorney Grimaldi’s success is the number and variety of his victories in court. He has won “not guilty” verdicts in federal, superior, district, and municipal court. He has won acquittals in felony cases punishable by mandatory prison sentences — including life in prison —and he has won acquittals in misdemeanor cases with a likely sentence of probation. He has won dismissals of numerous cases before they even went to trial. He has successfully moved to suppress or “throw out” evidence in many cases, including drugs, firearms, computer evidence, cell phone evidence, witness identifications, and his clients’ own statements to police. He has also helped clients avoid suspensions and expulsions during school and university disciplinary hearings.

Successful criminal defense lawyers must be able to use everything available to them to articulate a better, more compelling, more plausible account of what transpired than the prosecution. They must know the evidence better than the other side. They must know how to read, write, think, and argue better than the other side. Attorney Grimaldi thrives on the challenge of turning the government’s case into his client’s victory.

Attorney Grimaldi knew from an early point that he wanted to be a criminal defense attorney. The profession stands at a cross-section of so many things that are interesting or appealing to him. Advocating for individual clients versus a powerful government. Combining reasoned argument and persuasive oratory. Respecting legal traditions while utilizing scientific breakthroughs. Transforming serious criminal allegations into winning jury verdicts.

As a Massachusetts native, Attorney Grimaldi is dedicated to the people and communities he serves. At his graduation from Boston College Law School, Attorney Grimaldi received the award for Outstanding Promise of Professional Achievement. He was also the recipient of several competitive scholarships. For his first seven years as a lawyer, Attorney Grimaldi practiced at the Committee for Public Counsel Services (CPCS), the state public defender office, where he defended numerous cases in the Brockton, Salem, and Boston offices. In 2014, Attorney Grimaldi opened his own private office where he practices in federal and state courts across Massachusetts.

Attorney Grimaldi is a graduate of the National Criminal Defense College (NCDC) Trial Practice Institute in Macon, Georgia. The institute is taught by some of the most highly regarded criminal defense practitioners in the country.

Super Lawyers Magazine has distinguished Attorney Grimaldi for his achievements in criminal defense. Massachusetts Lawyers Weekly recognized Attorney Grimaldi as the first known lawyer in the history of Massachusetts to win judicial immunity for defense witnesses in a criminal case. View article.

Attorney Grimaldi is a member of the Board of Directors of the Massachusetts Association for Criminal Defense Attorneys (MACDL). At MACDL, Attorney Grimaldi works to advance criminal justice reform and to achieve broader objectives of the criminal defense bar.

Attorney Grimaldi has taught at numerous legal education seminars and conferences. He has chaired the Warrant and Warrantless Search and Seizure Seminar for Massachusetts Continuing Legal Education (MCLE). He has presented as a panel member at other MCLE and legal education seminars.

If you are accused of a crime, you need someone with real experience, ability, and passion representing you. Contact Attorney Grimaldi at (617) 661-1529 or online today.


J.D., Boston College Law School

  • Outstanding Promise of Professional Achievement (awarded at graduation)
  • National Mock Trial Team Member
  • Mock Trial Competition Finalist
  • James and Lois Champy Scholarship
  • Robert S. Pitcoff Memorial Scholarship

National Criminal Defense College (NCDC)
Trial Practice Institute

B.A., Clark University
Magna Cum Laude

London School of Economics and Political Science
Full academic year program

Jurisdictions Admitted to Practice Commonwealth of Massachusetts
United States District Court, District of Massachusetts
First Circuit Court of Appeals
Professional & Bar Association Memberships

National Association of Criminal Defense Lawyers (NACDL)
Member of Board of Directors

Massachusetts Association of Criminal Defense Lawyers (MACDL)

Massachusetts Bar Association (MBA)

Boston Bar Association (BBA)

Client Reviews
Attorney David Grimaldi is a truly exceptional criminal defense lawyer. He represented me in a case in Suffolk Superior Court, and I know that I received the absolute best possible representation. Mr. Grimaldi met with me often, always kept me informed, answered my questions, and fought hard for me in court. Mr. Grimaldi always believed in me. I knew I could always count on him. When we went to trial and I was found not guilty, I knew it was because of Mr. Grimaldi's hard work and dedication. If you need a great criminal defense attorney, I highly recommend you call Attorney David Grimaldi. H.E.
I highly recommend David Grimaldi. He was always responsive and sympathetic to my situation, from the very first call at the height of my crisis until the case was eventually dismissed. In court he was articulate and clever without ever appearing to upset the other attorney or judge presiding. I hope I never need him again, but if I did I wouldn't hesitate. P.R.
At some point in our lives we all run into a situation we can not control and need help. I was lost and after 2 lawyers and no help in sight I got lucky and someone referred David Grimaldi to me for my federal case . After 19 days without even a chance for Bail/Bond, David stood up and fought for me and I was released. My case made national news and was highly publicized. Not only was I released, but the prosecuting AUSA was clearly outmatched in arguments as David is the best at making adjustments and knowing what to say and do for his clients. In the end I could not have in my wildest dreams expected such a great result in a case that appeared to have no light at the end of the tunnel. I would recommend David 100 times out of 100. Honest and professional. You won't find a better man to fight for you than David. Adam P.