Apr 1994 Joined the Company Jan 1999 General Manager, Design Department, the Company Jan 2001 General Manager, Design Division, the Company Mar 2003 Director, the Company Mar 2007 President, the Company Mar 2008 Representative Director, President, the Company (current)

Apr 2003 Joined the Company Jan 2012 General Manager, No. 4 Design Department, the Company Sep 2013 General Manager, Isolator Department, the Company Jan 2014 General Manager, East Japan Sales Division, the Company Jan 2021 Deputy General Manager, Sales Division; General Manager, East Japan Sales Division; General Manager, Sales Planning Department, the Company Mar 2021 Director, the Company (current); General Manager, Sales Division; General Manager, East Japan Sales Division; General Manager, Sales Planning Department Nov 2021 General Manager, Sales Division, the Company Apr 2023 General Manager, Business Planning Division, the Company (current)

Apr 1996 Joined the Company Jul 2011 General Manager, No. 1 Design Department, the Company Jan 2020 Deputy General Manager, No. 1 Design Division, the Company Jan 2021 General Manager, No. 1 Design Division, the Company Jan 2022 Deputy General Manager, Production Division, the Company Mar 2022 Director, the Company (current); General Manager, Production Division (current); Plant Manager, Kusaka Plant (current) Jan 2025 Plant Manager, Koshigaya Plant, the Company (current)

Apr 1996 Joined the Company Jan 2009 General Manager, No. 2 Design Department, the Company Jan 2020 General Manager, No. 2 Design Division; General Manager, R&D Department, the Company Apr 2023 General Manager, Design Division, the Company Jan 2024 General Manager, Design Division, the Company (current) Mar 2025 Director, the Company (current) Jan 2026 General Manager, Design Division, the Company (current)

Apr 1981 Joined Kokusai Kogyo Co., Ltd. Oct 2007 President and Representative Director, Kokusai Kogyo Co., Ltd. Mar 2008 President and Representative Director, Kokusai Kankyo Solutions Co., Ltd. Jun 2009 President and Representative Director, Miyazaki Solar Way Co., Ltd. Jul 2009 Director, GEOSOL Beteiligungsgesellschaft mbH Apr 2015 Advisor, Kokusai Kogyo Co., Ltd. (current) May 2017 Director, Nonprofit Organization Society of Environmental Management Studies (current) Mar 2022 Audit and Supervisory Committee Member, Outside Director, the Company Mar 2023 Outside Director, the Company (current)

Apr 1983 Joined the Company Jan 1998 General Manager, Gunma Plant, the Company Jan 1999 Deputy Plant Manager, Gunma Plant, the Company Jan 2001 Plant Manager, Gunma Plant, the Company Jan 2015 Deputy General Manager, Production Division; Plant Manager, Gunma Plant, the Company Mar 2017 Director, the Company Jun 2018 General Manager, Production Division; Plant Manager, Kusaka Plant; Plant Manager, Gunma Plant, the Company Jan 2019 General Manager, Production Division, the Company Mar 2022 Deputy General Manager, Production Division, the Company Mar 2023 Audit and Supervisory Committee Member, Director, the Company (current)

Apr 1987 Assistant, Department of Resources Engineering, School of Science and Engineering, Waseda University Apr 1991 Lecturer, Department of Resources Engineering, School of Science and Engineering, Waseda University Apr 1993 Associate Professor, Department of Resources Engineering, School of Science and Engineering, Waseda University Apr 1998 Professor, Department of Environment and Resources Engineering, School of Creative Science and Engineering, Waseda University (current) Mar 2015 Outside Audit & Supervisory Board Member, the Company Mar 2020 Outside Director, Audit and Supervisory Committee Member, the Company (current)

Oct 1989 Joined Sanwa Tohmatsu Aoki Audit Corporation (currently Deloitte Touche Tohmatsu LLC) Mar 1998 Opened Mitsuko Takahashi Certified Public Accountant Office Nov 2001 Opened Mitsuko Takahashi Certified Public Accountant and Tax Accountant Office (current) Mar 2023 Audit and Supervisory Committee Member, Outside Director, the Company (current) Jun 2024 Outside Audit & Supervisory Board Member, Creo Co., Ltd. (current) Jun 2025 Outside Audit & Supervisory Board Member, Aflac Life Insurance Japan Ltd. (current)