Apr 1983 Joined Nippon Steel Corporation Apr 2007 General Manager, Bangkok Office, Nippon Steel Corporation Jun 2009 Seconded to Nippon Steel Thailand Apr 2011 General Manager, Raw Materials Division No.1, Nippon Steel Corporation Apr 2015 Executive Officer; concurrently General Manager, Raw Materials Division No.2, Nippon Steel & Sumitomo Metal Corporation Apr 2018 Managing Executive Officer, in charge of raw materials, Nippon Steel & Sumitomo Metal Corporation Mar 2020 Director, Executive Vice President of the Company Jan 2021 Representative Director, President of the Company (current)

Apr 1988 Joined Nippon Steel Corporation Apr 2013 General Manager, European Office, Nippon Steel & Sumitomo Metal Corporation May 2017 General Manager, Corporate Planning Department, Nippon Steel & Sumitomo Metal Corporation Apr 2019 Advisor, Nippon Steel Corporation; concurrently General Manager, Raw Materials Division No.2 Apr 2023 Executive Officer, in charge of raw materials and equipment, Nippon Steel Corporation; concurrently General Manager, Raw Materials Division No.2 Mar 2024 Director, Senior Managing Executive Officer of the Company, in charge of corporate planning and overseas business management Jan 2025 Director, Senior Managing Executive Officer of the Company, in charge of corporate planning, overseas business management, and special assignments from the President (current)

Apr 1986 Joined the Company Mar 2010 General Manager, Secretarial and Human Resources Department, the Company Mar 2015 Advisor, the Company; concurrently General Manager, Human Resources Department Jan 2018 Executive Officer, the Company; concurrently General Manager, Environmental Systems Business Division Jan 2020 Executive Officer, the Company; concurrently Director, Human Resource Development Center Jan 2024 Managing Executive Officer, the Company, in charge of human resources, general affairs, and internal control; concurrently Director, Human Resource Development Center Mar 2024 Director, Managing Executive Officer of the Company, in charge of human resources, general affairs, and internal control; concurrently Director, Human Resource Development Center Jan 2026 Director, Managing Executive Officer of the Company, in charge of human resources, human resource development, general affairs, and internal control (current)

Apr 1985 Joined Nippon Juko Kogyo Co., Ltd. Jan 1998 Seconded to Hunan Shin-Nichi Juka Co., Ltd.; General Manager, Technology and Quality Assurance Department Jul 2003 General Manager, Takaoka Plant, Battery Materials Business Division, the Company Jan 2019 Advisor, the Company; General Manager, Toyama Plant Jan 2021 Advisor, the Company; concurrently General Manager, Production Technology Department Jan 2022 Executive Officer, the Company; concurrently General Manager, Production Technology Department Jan 2024 Managing Executive Officer, the Company, in charge of power business; concurrently General Manager, Production Technology Department Jan 2025 Managing Executive Officer, the Company, in charge of production technology, equipment planning, safety and environment, R&D, information systems, and power business Mar 2025 Director, Managing Executive Officer of the Company, in charge of production technology, equipment planning, safety and environment, R&D, information systems, and power business (current)

Apr 1991 Joined Nisshin Steel Co., Ltd. Apr 2016 General Manager, Finance Department, Nisshin Steel Co., Ltd. Apr 2020 General Manager, Finance Department, Nippon Steel Corporation Apr 2022 General Manager, Finance Department, Nippon Steel Corporation; concurrently Deputy General Manager, General Affairs Department and Deputy General Manager, Human Resources and Labor Relations Department Apr 2023 Executive Officer, the Company Jan 2024 Executive Officer, the Company, in charge of accounting and overseas business management; concurrently General Manager, Corporate Planning Department Mar 2024 Director, Executive Officer of the Company, in charge of accounting; concurrently General Manager, Corporate Planning Department (current)

Apr 1983 Joined The Nippon Kogyo Bank, Ltd. (now Mizuho Bank, Ltd.) Jun 1998 Deputy Manager, London Office, International Funds Division, The Nippon Kogyo Bank Apr 2002 Senior Manager, European Funds Office, Market Planning Department, Mizuho Corporate Bank, Ltd. Apr 2010 Executive Officer; General Manager, International Foreign Exchange Department, Mizuho Corporate Bank, Ltd. Jul 2013 Executive Officer; General Manager, International Foreign Exchange Department, Mizuho Bank, Ltd. Oct 2015 Managing Executive Officer; Head of East Asia Regional Unit, Mizuho Financial Group, Inc. Apr 2016 Managing Executive Officer; Deputy Head of Global Markets Division, Mizuho Securities Co., Ltd. Jan 2018 Advisor, ASICS Corporation Mar 2018 Director, ASICS Corporation Mar 2020 Managing Executive Officer, ASICS Corporation Mar 2021 Director of the Company Jun 2021 Outside Director, Penta-Ocean Construction Co., Ltd. (current) Mar 2024 Director (Audit and Supervisory Committee Member) of the Company Mar 2026 Director of the Company (current)

Apr 1984 Joined Mitsui & Co., Ltd. Jul 2007 Deputy General Manager, Inner Mongolia Ordos Electric Power Metallurgy Co., Ltd. Oct 2011 General Manager, Ferroalloys Department, Mitsui & Co., Ltd. Apr 2012 General Manager, China Business Division, Mitsui & Co., Ltd. Mar 2014 Director and General Manager, Mitsui & Co. (Guangdong) Trading Co., Ltd. Apr 2017 President and Representative Director, Mitsui Metals Co., Ltd. Apr 2019 Managing Officer, Mitsui & Co., Ltd. Jun 2021 Outside Director, Shikoku Chemicals Corporation (current) Apr 2024 Outside Director, Asahi Seiren Co., Ltd. (current) Mar 2026 Director of the Company (current)

Apr 1988 Joined Nippon Steel Corporation Oct 2012 Senior Chief Manager, Affiliated Companies Department, Nippon Steel & Sumitomo Metal Corporation Apr 2016 General Manager, General Affairs Department, Muroran Works, Nippon Steel & Sumitomo Metal Corporation Apr 2019 Executive Officer, Osaka Steel Co., Ltd. Jun 2019 Director, Osaka Steel Co., Ltd., in charge of corporate planning, finance, general affairs, and affiliated companies Jun 2021 Director, Executive Officer, Nippon Steel Logistics Co., Ltd., in charge of corporate planning, finance, general affairs, and human resources and labor relations Apr 2022 Director, Managing Executive Officer, Nippon Steel Logistics Co., Ltd., in charge of corporate planning, finance, general affairs, and human resources and labor relations Mar 2025 Director (Full-time Audit and Supervisory Committee Member) of the Company (current)

Apr 1985 Joined Ajinomoto Co., Inc. Jul 2006 Plant Manager, Mojokerto Plant, PT Ajinomoto Indonesia Jul 2008 Deputy President, PT Ajinomoto Indonesia Jul 2012 General Manager, Kyushu Plant, Ajinomoto Co., Inc. Jun 2013 Executive Officer; General Manager, Kyushu Plant, Ajinomoto Co., Inc. Jun 2015 Executive Officer; General Manager, Food Production Center, Ajinomoto Co., Inc. Jun 2017 Executive Officer; General Manager, Group Procurement Center, Ajinomoto Co., Inc. Jul 2020 Executive Officer; General Manager, DX Promotion Department, Ajinomoto Co., Inc. Jun 2021 Advisor, Ajinomoto Co., Inc. Mar 2022 Director of the Company Mar 2024 Director (Audit and Supervisory Committee Member) of the Company (current)

Oct 1992 Joined Asahi Shinwa Accounting Firm (now Ernst & Young ShinNihon LLC) Apr 1996 Registered as Certified Public Accountant Aug 1999 Joined Gold Crest Co., Ltd. Jan 2002 Joined Sumitomo Corporation Financial Management, Ltd. Nov 2004 Joined Tohmatsu & Co. (now Deloitte Tohmatsu LLC) Jun 2008 Member (now Partner), Tohmatsu & Co. Jan 2022 Established Aogi Suemura Certified Public Accountant Office (current) Jun 2022 Outside Director (Audit and Supervisory Committee Member), Rikentechnos Co., Ltd. (current) Mar 2023 Corporate Auditor of the Company Mar 2024 Director (Audit and Supervisory Committee Member) of the Company (current) Jun 2024 Outside Director (Audit and Supervisory Committee Member), Nomura Real Estate Holdings, Inc.