Sesen Bio, Inc. announced that Jane Pritchett Henderson, previously a member of the company's board of directors and the chair of the board's audit committee, has transitioned off the board of directors to a CEO Advisor role, effective November 22, 2021. Ms. Henderson departed the Board in order to concentrate on other responsibilities outside of the company, including as Chief Financial Officer of Adagio Therapeutics and as a director of two other companies.