Mitsubishi Chemical Group Corporation announced that, at the meeting of its Board of Directors held it resolved change of representative corporate executive officers as outlined below. Name and position of Appointed Representative Corporate Executive Officer Name: Yasuo Shimodaira Position: Representative Corporate Executive Officer, Executive Vice President, Head of Basic Materials & Polymers. Yasuo Shimodaira (Date of birth: September 1, 1966, Number of shares held: 4,400).

1990: Joined Mitsubishi Kasei Corporation (currently, Mitsubishi Chemical Corporation). 2017: General Manager, Petrochemical Planning Department, Petrochemical Planning Division, Mitsubishi Chemical Corporation, 2020: Director, Semiconductor Headquarters, Information & Display Division, 2023: Director, China Div., Specialty Materials Business Group, the Mitsubishi Chemical Group (current position). Date of change: April 1, 2024.

Due to change in management structure.