Sesoda Corporation Board of Directors resolved Appointment of the Sustainable Development Committee members. Name and resume of the previous position holder: Hwang Chih-Cheng: General Manager of the Company. Name and resume of the new position holder: Shih Yueh-Hui: Chief Director of Suao Main Plant of the Company; Other members name and resume: Chen Rong-Yuan: Chairman of the Company; Chen Cheng-Te: Vice Chairman of the Company; Liu Chih-Yung: General Manager of the Company; Tsao Ming: Formosa Petrochemical Corporation Director/Chairman; Chu Jih-Chuan: Partner Lawyer of Liu, Chang & Partners.

Reason for the change: The term has expired and a new appointment has been made by the Board of Directors. Effective date of the new member is July 01, 2024.