Apr 1981 Joined Asahi Kasei Kogyo Corporation Apr 2009 Joined the Company Apr 2011 Executive Officer Apr 2013 General Manager, Functional Resins Business Division Apr 2014 General Manager, Piping Systems Business Division Jun 2015 Director Apr 2016 Managing Executive Officer Apr 2018 Representative Director, President and Executive Officer; in charge of Compliance (current) Apr 2019 General Manager, Administration Division; in charge of Environment and Safety Nov 2019 General Manager, Internal Control Office Apr 2020 In charge of Facilities Department Apr 2022 In charge of Environment and Safety (current) Sep 2023 In charge of Health Management Promotion Project (current) Apr 2024 Representative Director and Chairman, Landwick Co., Ltd. Apr 2025 CEO (current)

Jul 1992 Joined the Company Apr 2012 General Manager, Nobeoka Manufacturing Department, Piping Materials Manufacturing Division, Piping Systems Business Division Jul 2014 General Manager, Management Planning Office, Administration Division Apr 2016 Executive Officer Jun 2017 Director (current) Apr 2018 General Manager, Piping Systems Business Division; Chairman, Asahi Yukizai Trading (Shanghai) Co., Ltd.; Chairman, Asahi Yukizai Valves & Equipment (Shanghai) Co., Ltd. Apr 2020 General Manager, Piping Manufacturing Plant, Piping Systems Business Division Apr 2022 Managing Executive Officer Apr 2024 Senior Managing Executive Officer; General Manager, Resins Business Division (current); Chairman, Asahi Yukizai Resin (Nantong) Co., Ltd. (current) Apr 2025 Executive Vice President and Executive Officer, COO; in charge of overall business (current) Jun 2025 General Manager, Piping Systems Business Division (current)

Apr 1986 Joined Asahi Kasei Kogyo Corporation May 2004 General Manager, Planning and Administration Department, Asahi Kasei Electronics Co., Ltd. Apr 2011 Group Leader, Business Development Group, Management Strategy Office, Asahi Kasei Corporation Jul 2012 Vice President, Business Development, ZOLL Medical Apr 2016 Deputy Project Leader, UVC Project, Asahi Kasei Corporation Apr 2019 Deputy General Manager, Corporate Planning Department, Asahi Kasei Corporation Oct 2020 Principal Expert (M&A), Asahi Kasei Corporation Apr 2023 Joined the Company; Executive Officer, Deputy General Manager, Administration Division Jun 2023 Director (current); General Manager, Administration Division Apr 2024 Managing Executive Officer; in charge of New Business Development Project (current) Apr 2025 Senior Managing Executive Officer, CFO; General Manager, Corporate Division (current)

Apr 1995 Joined Nippon Telegraph and Telephone Corporation (now NTT, Inc.) Jun 2004 Joined J.P. Morgan Securities Co., Ltd. Mar 2007 Joined UBS Securities Japan Co., Ltd. Mar 2015 Joined Goldman Sachs Securities Co., Ltd. Sep 2020 Managing Director and Head of Asia Strategy, Rocket Japan K.K. Dec 2021 Representative Director, President and Managing Director and Head of Asia Strategy, Rocket Japan K.K. Jun 2022 Outside Director, Fujimi Incorporated (current) Mar 2023 Representative Director, VG-C Co., Ltd. (current) Dec 2023 Representative Director and CEO, Co-founder, PhytoMol-Tech Co., Ltd. (current) Jan 2024 Director, DAIZ Engineering Co., Ltd. (now SprouTx Co., Ltd.) (current) Jun 2025 Director (current)

Apr 1987 Joined Asahi Kasei Kogyo Corporation Jun 2010 General Manager, Accounting Department, Asahi Kasei Pharma Corporation Jan 2016 General Manager, Management Planning Department, Asahi Kasei Pharma Corporation Apr 2018 General Manager, Overseas Business Promotion Department, Asahi Kasei Pharma Corporation Apr 2019 General Manager, Management Control Division, Asahi Kasei Pharma Corporation Apr 2023 Executive Officer, Asahi Kasei Pharma Corporation Apr 2025 Advisor to the President, Asahi Kasei Pharma Corporation Jun 2025 Director, Audit and Supervisory Committee Member of the Company (current)

Apr 1987 Registered as attorney (Daiichi Tokyo Bar Association); joined Yamasaki Law and Patent Office Apr 1993 Established Ohno & Kuboki Law Office Apr 2003 Established Kuboki Law Office; Managing Attorney (current) Apr 2012 Visiting Professor, Chuo University Law School (current) Jun 2015 Outside Director, Quol Co., Ltd. (now Quol Holdings Co., Ltd.) (current) Jun 2016 Outside Audit and Supervisory Board Member, Citizen Holdings Co., Ltd. (now Citizen Watch Co., Ltd.) Jun 2019 Director, Citizen Watch Co., Ltd. (current) Apr 2023 Vice President, Tokyo Medical and Dental University (now Institute of Science Tokyo) Jun 2023 Director, Audit and Supervisory Committee Member of the Company (current) Oct 2024 Vice Director, Institute of Science Tokyo Apr 2026 Special Assistant to the President and Chancellor, Institute of Science Tokyo (current)

Apr 1981 Joined Asahi Kasei Kogyo Corporation Apr 2006 Chairman and General Manager, Hangzhou Asahi Kasei Spinning Co., Ltd. Feb 2010 General Manager, Product Science Laboratory, Asahi Kasei Fibers Corporation May 2013 Center Director, R&D Center, Asahi Kasei Fibers Corporation Apr 2015 General Manager, Fiber Technology Development Division, Research and Development Division, Asahi Kasei Corporation; Center Director, Fiber R&D Center Jul 2016 Senior Innovation Coordinator, National Institute of Advanced Industrial Science and Technology (AIST) Apr 2023 Research Fellow, AIST Jun 2024 Director, Audit and Supervisory Committee Member of the Company (current)