Mersana Therapeutics, Inc. announced the appointment of Andrew A. F. Hack, M.D., Ph. D, to its board of directors. Dr. Hack currently serves as Chief Financial Officer at Editas Medicine; a position he has held since 2015. Previously, he served as a portfolio manager at Millennium Management, managing a healthcare investment fund focused on biotechnology, pharmaceutical, and medical device companies. Prior to Millennium, Dr. Hack was a securities analyst at HealthCor Management, Carlyle-Blue Wave Partners, and the MPM BioEquities Fund.