Sumco Corporation announced the retirement of Michiharu Takii as Director, Vice Chairman (Representative Director). Michiharu Takii will be appointed as a new Chief Executive Michihar Adviser. The board of directors transited Shinichi Kubozoe as Executive Vice President (Representative Director)from Senior Managing Director.

Shinichi Kubozoe: Date of Birth: August 12, 1962. Educational Background: March 1985-Bachelor of Laws, Osaka City University, Faculty of Law, Graduate School of Law. Career: April 1985: Joined Sumitomo Metal Industries Ltd. (the currentNippon Steel Corporation); April 2012: General Manager of Corporate Controller & Group Companies Management Dept., the Company; October 2012: General Manager of Accounting & Budget Control Department; March 2018: Executive Officer; July 2018: Executive Officer, General Manager of Finance Department; March 2020: Managing Executive Officer, Assistant of Corporate Strategy Division; March 2021:Managing Executive Officer, Head of Corporate Strategy Division; March 2023: Senior Managing Executive Officer, Head of Corporate Strategy Division (current).

Date of Change:- March 28, 2024.