CFO Resignation at Lyell Immunopharma

On September 15, 2025, Charles Newton, the Chief Financial Officer (CFO) and principal financial and accounting officer of Lyell Immunopharma, Inc., notified the company of his decision to resign, effective October 31, 2025. The resignation was not due to any disagreements with the company. Lyell Immunopharma plans to conduct a search for Newton's replacement. Additionally, the company and Newton have entered into a consulting agreement, under which Newton may provide consulting services to the company from the Resignation Date until April 30, 2026, or any earlier termination of the consultancy by either party.