Cynthia Mazareas has more than 30 years of experience in serving as a trusted adviser to companies in the life sciences industry. She applies her deep knowledge to provide strategic business counsel to boards, management teams and in-house counsel, representing high-growth private and public companies in day-to-day corporate matters and helping companies navigate through complex business transactions. Ms. Mazareas is Chambers recognized, named in Best Lawyers in America for biotechnology and life sciences, has been named a Life Sciences Star by LMG Life Sciences and was recommended for The Legal 500 United States for capital markets: equity offerings – advice to issuers.

Ms. Mazareas has counseled numerous public life sciences companies throughout their lifecycle, including Agios Pharmaceuticals, AVEO Pharmaceuticals, Beam Therapeutics, Cue Biopharma, Curis, IMARA, Nuvalent, Schrödinger, Syros Pharmaceuticals, Translate Bio and Xilio Therapeutics. Her emerging growth private company clients include Auron Therapeutics, Mediar Therapeutics and Volastra Therapeutics.

Clients rely on her combination of industry knowledge, legal experience and business acumen. One told Best Lawyers that she gives “great practical advice.” Another told Chambers and Partners, “I think very highly of Cynthia Mazareas, in life sciences in particular. She’s someone who truly does live the life of her clients. She’s been doing this for a long time and she understands a great deal of the challenges that smaller companies face and is very adept at trying to help folks work through the types of challenges encountered by those companies.”

Ms. Mazareas is also dedicated to using her skills to provide legal advice to organizations that are doing impactful work in the community.  She represents MENTOR: The National Mentoring Partnership, an organization that aims to fuel the quality and quantity of mentoring relationships for young people and to close the mentoring gap for the one in three young people growing up without this critical support. She also provides advice to Bridge Over Troubled Waters, Boston’s foremost agency providing life-changing services for homeless, runaway and in-risk youth. 

Community Involvement

Ms. Mazareas serves on the Board of Directors for Life Science Cares, a national nonprofit organization that brings together companies in the life sciences industry to eliminate the impact of poverty, and chairs the organization’s Nominating and Governance Committee. She previously held board positions for Prize4Life and Shore Country Day School.

Professional Activities

Ms. Mazareas is an author and frequent speaker on corporate transactions, governance and other matters relating to life sciences and biotechnology companies. Her speaking engagements have included the BIO General Counsels Committee Conference, the Black In-House Counsel Network’s Elevating Black Excellence Regional Summit Series, the Women in the Enterprise of Science and Technology’s Women in Venture panel, and the Corporate Counsel Women of Color Conference.

Ms. Mazareas is a member of the Society of Corporate Secretaries & Governance Professionals and serves on the advisory committee of the Eastern New England Chapter. She is also a member of the Board of Directors of the Greater Boston Chamber of Commerce.

She is a member of the Massachusetts Biotechnology Council, the Massachusetts Bar Association, the Boston Bar Association, and the Massachusetts Black Women Attorneys Bar Association. She also plays an active role at WilmerHale as a member of the firm's Compensation Committee, Hiring Committee and Women's Leadership Initiative.