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, and has been named a Life Sciences Star by LMG Life Sciences.

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

Clients rely on her combination of industry knowledge, legal experience and business acumen. One interviewed by Chambers described her as “substantive, diligent, bright and technically strong”, and another told Chambers, “Ms. Mazareas is a very real gold-standard attorney for companies in life sciences.”  

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 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 Management Committee, Compensation Committee, Hiring Committee and Women's Leadership Initiative.