Michael McMahon


I take a results-oriented approach to helping clients win commercial disputes and resolve compliance concerns.

+1 617 937 2359

Michael McMahon has extensive experience, both at Cooley and as a former Department of Justice (DOJ) trial attorney, leading complex commercial matters and internal investigations. Michael regularly represents companies and individuals facing investigations from federal and state government entities, such as the DOJ, SEC and state AG Offices. Michael also has acted as lead trial counsel on behalf of both plaintiffs and defendants in complex commercial matters involving claims of fraud, trade secret misappropriation, misuse of confidential information, breach of contract, and in numerous post-acquisition disputes in M&A matters.

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  • Boston College Law School
    JD, magna cum laude, 2010

  • Boston College
    BA, International Studies
    cum laude, 2004

Admissions & Credentials



+1 617 937 2359 office

500 Boylston Street
14th Floor
Boston, MA 02116-3736