May 1973 Joined the Company Jan 1976 General Manager, Sales Department Feb 1981 Director, General Manager, Sales Department Feb 1985 Managing Director, General Manager, Sales Division Jun 1988 Representative Director, Executive Vice President Jun 1992 Representative Director, President Jun 2024 Representative Director, Chairman and CEO (current) Concurrent positions: Chairman, Yoshihara Ikuei-kai Foundation (Public Interest Incorporated Foundation)

Apr 2006 Joined the Company Jul 2012 Manager, Global Projects Section Jul 2014 Global Projects Leader Jul 2015 General Manager, Overseas Development Department Jul 2017 General Manager, Sales Planning Department, Screw Processed Products Division Jul 2020 Deputy General Manager, Screw Processed Products Division; General Manager, Sales Planning Department Jul 2021 Executive Officer; Deputy General Manager, Screw Processed Products Division; General Manager, Sales Planning Department Jun 2022 Director, Senior Executive Officer; General Manager, Corporate Planning Department Jun 2023 Director in charge of Corporate Planning and Information Systems, Senior Executive Officer; General Manager, Corporate Planning Department Jun 2024 Representative Director, President and COO (current)

Apr 1988 Joined the Company Jun 2007 Plant Manager, Head Office Plant, Head Office Steel Bar Division Apr 2010 General Manager, General Planning Department Jul 2014 Executive Officer in charge of Quality Assurance; General Manager, General Planning Department Jul 2016 Senior Executive Officer in charge of Quality Assurance and Affiliated Companies; General Manager, General Planning Department Jun 2017 Director, Chief Risk Officer (CRO); Senior Executive Officer in charge of Production, Quality Assurance, General Planning and Affiliated Companies Jun 2018 Director, CRO; Managing Executive Officer in charge of Business Divisions and Quality Assurance Jun 2020 Managing Director, CRO; in charge of Business Divisions and Quality Assurance Jun 2021 Managing Director, Assistant to the President in charge of Production, CRO Jun 2022 Managing Director, Assistant to the President in charge of Production Jun 2023 Managing Director, Assistant to the President Jun 2024 Director, Managing Executive Officer; General Manager of Logistics Management Jun 2025 Director, General Manager of Logistics, CRO (current) Concurrent positions: Representative Director, Totetsu Kouun Co., Ltd.; Representative Director, Totetsu Maintenance Co., Ltd.

Apr 1987 Joined the Company Jul 2007 General Manager, Sales Department, Screw Processed Products Division Feb 2012 General Manager, Engineering Department, Screw Processed Products Division Jul 2014 Executive Officer; Assistant to Director in charge of Overseas; Deputy General Manager, Screw Processed Products Division; General Manager, Engineering Department Jul 2015 Executive Officer; General Manager, Screw Processed Products Division Jun 2018 Director, Deputy in charge of Business Divisions, Senior Executive Officer; General Manager, General Planning Department Jun 2021 Director in charge of Development and Quality Assurance, Senior Executive Officer Jun 2022 Director, Senior Executive Officer; General Manager, Environment and Recycling Business Division Jun 2023 Director in charge of Production and Hachinohe, Senior Executive Officer; General Manager, Production Division Jun 2025 Director in charge of Production and Environment and Recycling, Senior Executive Officer (current)

Apr 1991 Joined the Company Apr 2008 Manager, Business Administration Section, Sales Department, Screw Processed Products Division Jul 2012 Plant Manager, Hachinohe Plant, Tohoku Steel Bar Division Jul 2015 Deputy General Manager, Environment and Recycling Business Division; Plant Manager, Hachinohe Plant Jul 2017 Executive Officer; General Manager, Human Resources Department Jul 2018 Executive Officer; General Manager, General Affairs and Human Resources Department Jun 2020 Director, Deputy in charge of Administration, Executive Officer; General Manager, General Affairs and Human Resources Department Jun 2021 Director, Senior Executive Officer; General Manager, General Planning Department and General Affairs and Human Resources Department Jun 2022 Director, Senior Executive Officer; General Manager, General Affairs and Human Resources Department Jun 2023 Director in charge of General Affairs and Human Resources, Senior Executive Officer; General Manager, General Affairs and Human Resources Department Jun 2024 Director in charge of General Affairs, Human Resources and IT, Senior Executive Officer; General Manager, General Affairs and Human Resources Department Apr 2025 Director in charge of General Affairs, Human Resources and IT, Senior Executive Officer Jun 2025 Director, CRO, in charge of General Affairs, Human Resources and IT, Managing Executive Officer (current)

Apr 2020 Executive Assistant to Chief Executive Officer, Retail Division, Sumitomo Mitsui Banking Corporation May 2022 Joined the Company; Officer, General Manager of Accounting and Finance Jul 2023 Executive Officer in charge of Accounting and IR; General Manager, IR Office Jul 2024 Senior Executive Officer in charge of Accounting and IR; General Manager, IR Office Jun 2025 Director in charge of Accounting and IR, Senior Executive Officer; General Manager, IR Office Jun 2026 Director, CFO, in charge of Accounting and IR, Senior Executive Officer; General Manager, IR Office (current)

Apr 2014 Deputy General Manager, Global Advisory Department, Sumitomo Mitsui Banking Corporation Sep 2016 Joined the Company; Officer, Assistant to Executive in charge of Sales and Procurement; General Manager, Sales Planning Department, Screw Processed Products Division Jul 2017 Executive Officer, Assistant to Executive in charge of Overseas; General Manager, General Planning Department Jun 2018 Director (Full-time Audit and Supervisory Committee Member) (current)

Apr 1992 Registered as Attorney-at-Law Apr 1996 Joined Baba & Sawada Law Office (current) Apr 2005 Professor, Keio University Law School (Graduate School of Law) Sep 2011 Outside Audit & Supervisory Board Member, Alflex Japan Co., Ltd. (current) Jun 2012 Chief Audit & Supervisory Board Member of the Company Jun 2014 Director of the Company Apr 2016 Professor, Keio University Law School (Graduate School of Law) Jun 2016 Director (Audit and Supervisory Committee Member) of the Company Jun 2022 Director (Audit and Supervisory Committee Member) of the Company, retired Jun 2026 Director (Audit and Supervisory Committee Member) of the Company (current) Concurrent positions: Outside Audit & Supervisory Board Member, Alflex Japan Co., Ltd.

Oct 2000 Joined Chuo Aoyama Audit Corporation (now PwC Arata LLC) Apr 2004 Registered as Certified Public Accountant Jan 2007 Joined Milestone Turnaround Management Co., Ltd. Nov 2008 Joined PwC Advisory Co., Ltd. (now PwC Advisory LLC) Jul 2018 Opened Kataoka Certified Public Accountant Office (current) Jul 2018 Partner, CPA Partners Co., Ltd. Jun 2019 Outside Director, Wattman Co., Ltd. (current) Mar 2020 Audit & Supervisory Board Member, Fun Group Co., Ltd. Jun 2020 Director (Audit and Supervisory Committee Member) of the Company (current) Jun 2024 Director, CPA Partners Co., Ltd. (current) Jun 2025 Audit & Supervisory Board Member, Fuji Television Network, Inc. Concurrent positions: Partner, CPA Partners Co., Ltd.; Outside Director, Wattman Co., Ltd.; Outside Director, Ryochi Keiei Co., Ltd.; Audit & Supervisory Board Member, Fuji Television Network, Inc.

Oct 2002 Registered as Attorney-at-Law May 2008 Joined Okuno Sogo Law Office (now Okuno Sogo Law Office Corporation) (current) Jun 2015 Outside Director, Toho Bank, Ltd. Jun 2018 Outside Director (Audit and Supervisory Committee Member), Toho Bank, Ltd. Sep 2018 Auditor, Muroran Institute of Technology (National University Corporation) Nov 2021 Director, Japan Joint Securities Foundation (Public Interest Incorporated Foundation) (current) Nov 2021 Outside Audit & Supervisory Board Member, Suzuki Shokai Co., Ltd. (current) Jun 2022 Director (Audit and Supervisory Committee Member) of the Company (current) Outside Director, Nippon Hume Co., Ltd. (current) Concurrent positions: Director, Japan Joint Securities Foundation; Outside Audit & Supervisory Board Member, Suzuki Shokai Co., Ltd.; Outside Director, Nippon Hume Co., Ltd.

Dec 2007 Joined PwC Arata Audit Corporation (now PwC Japan LLC) Jul 2010 Registered as Certified Public Accountant Sep 2011 Seconded to PwC Australia (Sydney Office) Sep 2014 Joined Nomura Securities Co., Ltd. Aug 2019 Seconded to Corporate Design Partners Co., Ltd. Nov 2023 Opened Yuko Shimoda Accounting Office (current) Nov 2024 Established accsv LLC (current) Jun 2022 Audit & Supervisory Board Member, Quants Inc. (current) Concurrent positions: Audit & Supervisory Board Member, Quants Inc.