Professionals
William “Mo” Cowan

P: 617.348.1600
Email   |   Download vCard

William “Mo” Cowan

P: 617.348.1600
E: mcowan@mlstrategies.com

One Financial Center
Boston, MA 02111

William “Mo” Cowan


President & Chief Executive Officer

Senator William “Mo” Cowan is President and Chief Executive Officer of ML Strategies and Of Counsel to Mintz Levin.

Prior to rejoining Mintz Levin, where he practiced from 1997-2009, Senator Cowan represented the Commonwealth of Massachusetts as interim United States Senator, filling the vacancy created when John F. Kerry was appointed United States Secretary of State. Immediately prior to his Senate service, Senator Cowan served in the following leadership positions for Massachusetts Governor Deval L. Patrick: Chief Legal Counsel (2009-2011), Chief of Staff (2011-2013) and Senior Advisor (2013). Senator Cowan also served as a Fellow at the Harvard University Institute of Politics (Fall 2013).

During his term as Senator, Mo served as a member of the Senate Agriculture, Commerce, and Small Business Committees. He also chaired the Subcommittee on Nutrition, Specialty Crops, Food and Agricultural Research, and was appointed by Governor Patrick to co-chair the Commonwealth of Massachusetts Military Asset and Security Strategy Task Force.

As Chief of Staff to Governor Patrick, Mo directed strategic planning, investment and operations, including oversight of the Commonwealth's multi-billion dollar, annual budgeting process. As chief strategist and crisis manager to the Governor, Mo advised on all domestic and international affairs, intergovernmental relations and gubernatorial appointments and administered all management and personnel functions within the Governor's office.

As Chief Legal Counsel to the Governor, Senator Cowan served as the General Counsel for the Executive Office, advising Governor Deval L. Patrick on all legal and policy matters. He managed legislative, regulatory policy setting for the Office of the Governor. Senator Cowan oversaw all legal operations for the Patrick-Murray Administration including management of five deputy counsel, eight Cabinet-level general counsel, and several hundred in-house and outside counsel, the largest legal practice in the Commonwealth. Senator Cowan also administered the selection and nomination of Chief Justice of Supreme Judicial Court and nearly two dozen additional judicial appointees to state administrative law panels, trial courts and appellate courts.

Prior to his public service, Mo was a Member in the firm's Litigation Section where he represented a diverse array of commercial clients in matters involving corporate governance, financial mismanagement and malfeasance and money laundering investigations. He led many internal investigations, providing litigation counseling and crisis management services to corporate clients, representing individuals and institutions in SEC and SRO enforcement actions, and class action proceedings. Mo also served for six months in 2000 as a Special Assistant District Attorney in the Office of the Middlesex County District Attorney.

During his earlier term with the firm, Mo chaired the Hiring Committee and served on the Diversity Committee, Member Compensation Committee, and Management Recommendations Committee. Mo currently serves on the firm's Policy Committee.

Recognitions & Awards

    Good Guy Award, Massachusetts Women's Political Caucus

    Building A Better Boston, UMass-Boston Center for Collaborative Leadership (2013)

    Paul Robeson National Leadership Award, Concerned Black Men of Massachusetts (2013)

    Massachusetts Super Lawyers (2004 - 2010)

    Boston Business Journal: 40 Under 40 (2003)

Professional & Community Involvement

    Director, Eastern Bank Corporation

    Director, Massachusetts High Technology Council

    Director, National Association of Corporate Directors, New England Chapter

    Member, Boston Club Corporate Advisory Board

    Member, United States Association of Former Members of Congress

    Co-Chair, Greater Boston YMCA Board of Overseers

    Trustee, Northeastern University

    Trustee, Massachusetts General Hospital

    Trustee, The Chestnut Hill School

    Fellow, Harvard University Institute of Politics (2013)