Sumitomo Bakelite Co. Ltd. announced that the Company has decided to change its officers at the meeting of the Board of Directors held on February 29, 2024, as follows. The changes in the directors are subject to approval at the 133rd Ordinary General Meeting of Shareholders to be held in late June 2024.

Promoted executive officer (As of April 1, 2024); Senior Managing Executive Officer - Shinichi Kajiya (Current: Managing Executive Officer). Retired executive officers (As of March 31, 2024): Managing Executive Officer - Goichiro Kuwaki (Scheduled as of April 1, 2024: President of Akita Sumitomo Bakelite Co. Ltd.); Managing Executive Officer - Masaya Fumita (Scheduled as of April 1, 2024: President of SB Pax Co.

Ltd.); planned to be established as of April 1, 2024 Executive Officer - Alex Geskens. Directors to be retired (As of date of the Ordinary General Meeting of Shareholders to be held in June 2024): Director and Executive Vice President - Sumitoshi Asakuma (Position of the Executive Vice President will continue after retirement of Director); Responsibility: Overseeing:: Industrial Functional Materials Research Laboratory, Industrial Functional Materials Sales Div., Kanuma Plant, and Sheet Waterproof Business In charge of: Global Marketing Div. Outside Director - Hiroyuki Abe.

Name: Shinichi Kajiya Date of Birth: April 9, 1965. Brief History: April 1989 - Entered the Company, April 2017 - General Manager of Information & Telecommunication Materials Div. of the Company, April 2019 - Executive Officer of the Company, April 2022 - Executive Officer of the Company (Current), April 2024 - Senior Executive Officer of the Company (Planned).

Responsibility: General Manager of Material Solutions Sales Div. Overseeing: High Performance Plastic Business in North America, Asia and China area, High Performance Plastic Technology Development Laboratory, and Shizuoka Plant In charge of: High Performance Plastic Business in Europe, Global Business Planning Dept., and Heat Dissipation Materials Business Development Dept.