Summit Therapeutics Inc. announced that Ujwala Mahatme, who has served as a member of its Board since July 2020 and was nominated for election as a director at the Annual Meeting, has informed the company that she wishes to resign to focus on her increasing professional commitments outside the Company. Ms. Mahatme resigned effective as of June 12, 2024 and informed the Company that she will not stand for election at the Annual Meeting. Her resignation was not due to any disagreement with the Company regarding the Company's operations, policies or practices.