Apr 1967 Joined the Company Dec 1974 Director; General Manager, Shiga Plant Construction Department Nov 1977 Managing Director Jul 1981 Representative Director, Senior Executive Vice President Jul 1987 Representative Director, President, Gunei Borden Co., Ltd. Jul 1988 Representative Director, President of the Company Oct 1997 Representative Director, Big Trading Co., Ltd. Jun 1998 Representative Director, Nippon Kainol Co., Ltd. Jun 1998 Representative Director, Chairman, Gunei Shoji Co., Ltd. Jul 2000 Representative Director, Chairman, Gunei Borden Co., Ltd. Jul 2012 Representative Director, President; in charge of Development Division Jun 2013 Representative Director, President; in charge of Development and Administration Divisions Jul 2015 Representative Director, President; in charge of GCI Plaza Jun 2016 Representative Director, Chairman; overall management (current)

Apr 1998 Joined the Company Jul 2002 Deputy General Manager, Sales Division Jun 2004 Director; General Manager, Administration Division May 2006 Representative Director, President, Nippon Kainol Co., Ltd. Jun 2008 Managing Director; Deputy in charge of Sales Division and General Manager, Overseas Sales Division Apr 2009 Managing Director; General Manager, Corporate Planning Division Apr 2011 Managing Director; in charge of Administration Division Jun 2011 Director, Senior Executive Vice President; overall supervision of Business Development, Manufacturing and Administration Divisions; in charge of Administration Division Jul 2012 Director, Senior Executive Vice President; assistant to the President; in charge of Corporate Planning and Internal Audit Offices Oct 2013 Representative Director, Senior Executive Vice President; assistant to the President; in charge of Corporate Planning and Internal Audit Offices Jun 2016 Representative Director, President; in charge of Administration, Corporate Planning, Internal Audit and Quality Assurance Team Apr 2018 Representative Director, President; in charge of Administration, Internal Audit and Quality Assurance Team Jun 2018 Representative Director, President and Executive Officer; overall management, Internal Audit and Quality Assurance Team (current)

Apr 1992 Joined the Company Apr 2009 General Manager, Electronic Materials Unit Feb 2015 Seconded to Thai GCI Resitop Company Limited as Director and President Jun 2018 Executive Officer; seconded to Thai GCI Resitop Company Limited as Director and President Jun 2021 Executive Officer; in charge of Administration Division Jun 2021 Director, Executive Officer, General Manager, Administration Division of the Company Jul 2021 Director, Executive Officer, General Manager, Corporate Division (current)

Apr 1994 Joined the Company Apr 2013 General Manager, Tokyo Branch Jun 2018 General Manager, Corporate Planning Office Apr 2019 Executive Officer; General Manager, Sales & Marketing Division Jun 2025 Director, Executive Officer, General Manager, Sales & Marketing Division of the Company (current)

Apr 1995 Joined the Company Apr 2009 General Manager, Fine Materials Unit Apr 2016 General Manager, Shiga Plant Jul 2021 Executive Officer; General Manager, Manufacturing Division Jul 2025 Senior Executive Officer; General Manager, Manufacturing Division Jun 2026 Director, Executive Officer, General Manager, Manufacturing Division of the Company (current)

Apr 1979 Joined Mitsui Petrochemical Industries, Ltd. (now Mitsui Chemicals, Inc.) Jun 2005 Executive Officer; General Manager, Basic Chemicals Planning and Administration Division; General Manager, Raw Materials Purchasing Division, Mitsui Petrochemical Industries, Ltd. Jun 2009 Managing Director; General Manager, Corporate Planning Division; Chief Representative for China, Mitsui Petrochemical Industries, Ltd. Jun 2011 Managing Director; in charge of Corporate Planning, New Business Promotion and Responsible Care; General Manager, Internal Control Office, Mitsui Petrochemical Industries, Ltd. Apr 2013 Representative Director, Deputy Plant Manager, Executive Officer; General Manager, Production & Technology Division; in charge of SCM, Purchasing, Logistics and Internal Control, Mitsui Petrochemical Industries, Ltd. Jun 2016 Vice President, Executive Officer; General Manager, Basic Materials Business Division, Mitsui Chemicals, Inc. Apr 2018 Special Assistant to the President; in charge of Basic Materials Business Division and Vietnam Project, Mitsui Chemicals, Inc. Apr 2019 Special Advisor, Mitsui Chemicals, Inc. Jun 2020 Outside Director, Oiles Corporation (current) Jun 2021 Director of the Company (current)

Mar 1992 Joined the Company Apr 2016 General Manager, Corporate Planning Office Jun 2018 General Manager, Internal Audit Office Apr 2023 Full-time Contract Advisor, Internal Audit Office Jun 2023 Audit & Supervisory Board Member of the Company Jun 2024 Director, Full-time Audit and Supervisory Committee Member of the Company (current)

Sep 1982 Joined Ernst & Whinney, Los Angeles Office, U.S. audit firm Apr 1985 Joined Kyowa Sangyo Co., Ltd. Feb 1987 General Manager, Finance Department, Kyowa Sangyo Co., Ltd. Dec 1994 Director, General Manager, Finance Department, Kyowa Sangyo Co., Ltd. Dec 1995 Director, Executive Vice President, Kyowa Sangyo Co., Ltd. Sep 2001 Representative Director, President, Kyowa Sangyo Co., Ltd. (current) Jun 2016 Director, Kyowa Industrial U.S.A. Inc. (current) Jul 2021 Director, Kyowa Eidemiller Precision Machining, Inc. (current) Mar 2022 Director, Kyowa-Ishikawa Casting Co., Ltd. Jun 2024 Outside Director, Sawafuji Electric Co., Ltd. Jun 2024 Director, Audit and Supervisory Committee Member of the Company (current) Feb 2025 Representative Director, President, Kyowa-Ishikawa Casting Co., Ltd. (current)

Apr 1991 Joined Daiwa Securities Co., Ltd. Jul 1994 Joined Daiwa Institute of Research Ltd. Sep 1996 Joined Morgan Stanley Securities Co., Ltd. Feb 2009 Joined Frontier Management Inc.; Managing Director Jun 2015 Outside Director, Yamaichi Electronics Co., Ltd. Jun 2018 Executive Officer, Frontier Management Inc. Jun 2021 Outside Director, Hakuto Co., Ltd. (current) Sep 2025 Advisor, Frontier Management Inc. (current) Sep 2025 Representative Director, President, Buhin Daisuki Co., Ltd. (current) Jun 2026 Outside Director, SMC Corporation (current) Jun 2026 Director, Audit and Supervisory Committee Member of the Company (current)