Nov 1982 Joined the Company Apr 2002 General Manager, Katano Plant, Building Materials Division Apr 2005 General Manager, Operations Department, Building Materials Division Apr 2009 General Manager, Technology Headquarters, Building Materials Division Apr 2011 Executive Officer, General Manager, Chemical Products Division, Industrial and Construction Materials Business Headquarters Jun 2017 Director, in charge of Industrial and Construction Materials and Technology Development Office Apr 2018 Director, in charge of Industrial and Construction Materials, Technology Development Office and Logistics Jun 2018 Director, Senior Executive Officer, in charge of Industrial and Construction Materials, Technology Development Office and Logistics Apr 2021 Representative Director, President (current)

Apr 1984 Joined the Company Apr 2005 General Manager, Business Planning Department, Corporate Planning Headquarters Jul 2014 General Manager, Human Resources Office Jun 2017 Executive Officer, General Manager, General Planning Office Apr 2019 Senior Executive Officer, in charge of Finance and General Planning, General Manager, General Planning Office Jun 2020 Director, Senior Executive Officer, in charge of Finance, Internal Control, General Planning Office, Affiliated Companies and Audit Apr 2021 Director, Senior Executive Officer, in charge of Finance and Internal Control Apr 2022 Director, Senior Executive Officer, in charge of Finance and Human Resources Apr 2023 Director, Senior Executive Officer, in charge of Human Resources, General Affairs and Legal Apr 2025 Director, Managing Executive Officer, in charge of Finance, Human Resources, General Affairs and DX Promotion Jun 2025 Director, Managing Executive Officer, in charge of Finance and DX Promotion (current)

Jan 1989 Joined the Company Oct 2004 General Manager, Production Department, Steel Pipe Division, Sakai Plant Mar 2009 General Manager, Production Headquarters, Pipe Systems Business Headquarters Jul 2016 Executive Officer, Deputy General Manager, Steel Pipe Division Apr 2019 Executive Officer, General Manager, Steel Pipe Division Apr 2021 Senior Executive Officer, in charge of Lifeline Segment, General Manager, Pipe Systems Division Apr 2022 Senior Executive Officer, in charge of Facilities and Logistics Jun 2022 Director, Senior Executive Officer, in charge of Facilities and Production Apr 2023 Director, Senior Executive Officer, in charge of Facilities, Production, Logistics and CSR (Safety, Quality, Environment) Apr 2025 Director, Managing Executive Officer, in charge of Facilities, Production, Logistics and CSR (Safety, Quality, Environment) (current)

Apr 1986 Joined the Company Oct 2009 General Manager, Sales Headquarters, Forging and Engineering Division, Machinery Systems Business Headquarters Apr 2019 Executive Officer, General Manager, Forging and Engineering Division Apr 2021 Senior Executive Officer, in charge of Machinery Systems Segment Apr 2022 Senior Executive Officer, in charge of Overseas and Composite Project Jun 2022 Director, Senior Executive Officer, in charge of Overseas and Composite Project Apr 2023 Director, Senior Executive Officer, in charge of Overseas, Procurement and Composite Project Apr 2025 Director, Senior Executive Officer, in charge of Group Governance, Legal, Audit and Overseas (current)

Apr 1985 Joined the Company Jan 2005 Deputy General Manager, GST Office, Valve Division Feb 2007 Executive Officer, General Manager, Production Headquarters, Motoyama Seisakusho Co., Ltd. Oct 2009 Deputy Head, Production Headquarters, Pipe Systems Business Headquarters, the Company Apr 2015 Director, Motoyama Seisakusho Co., Ltd. Apr 2019 Representative Director, President, Motoyama Seisakusho Co., Ltd. Apr 2020 Executive Officer, the Company; Representative Director, President, Motoyama Seisakusho Co., Ltd. Apr 2023 Executive Officer, in charge of Technology Development Office and Intellectual Property Jun 2023 Director, Senior Executive Officer, in charge of Technology Development Office and Intellectual Property Apr 2025 Director, Senior Executive Officer, in charge of Technology Development Office, Intellectual Property and Composite Project (current)

Apr 1989 Joined the Company Jun 2007 General Manager, Human Resources Department Jul 2014 General Manager, Operations Department, Forging and Engineering Division Apr 2021 Executive Officer, General Manager, Forging and Engineering Division Apr 2025 Senior Executive Officer, in charge of Human Resources and General Affairs Jun 2025 Director, Senior Executive Officer, in charge of Human Resources and General Affairs (current)

Apr 1978 Joined Inabata & Co., Ltd. Jun 2012 Executive Officer, General Manager, Housing Environment Division, Inabata & Co., Ltd. Jun 2013 Director, Executive Officer, in charge of Housing Environment Division, Inabata & Co., Ltd. Jun 2015 Managing Director, Executive Officer, in charge of Synthetic Resins Division No. 2 and Housing Environment Division, Inabata & Co., Ltd. Jun 2019 Managing Director, Executive Officer, in charge of Chemicals Segment and Human Resources, Inabata & Co., Ltd. Jun 2021 Non-Executive Advisor, Inabata & Co., Ltd. Jun 2021 Outside Director, the Company (current) Jun 2022 Retired as Non-Executive Advisor, Inabata & Co., Ltd.

Apr 1978 Joined Konoike Construction Co., Ltd. Nov 2008 Executive Officer, Deputy General Manager, Tokyo Head Office (in charge of Civil Engineering), Konoike Construction Co., Ltd. Nov 2010 Managing Executive Officer, General Manager for East Japan, Konoike Construction Co., Ltd. Nov 2011 Director, Managing Executive Officer, General Manager for East Japan, Konoike Construction Co., Ltd. Nov 2014 Director, Managing Executive Officer, General Manager, Head Office Civil Engineering Division, Konoike Construction Co., Ltd. Nov 2016 Director, Senior Managing Executive Officer, General Manager, Head Office Civil Engineering Division, Konoike Construction Co., Ltd. Nov 2017 Executive Officer, Vice President, Konoike Construction Co., Ltd. Dec 2018 Senior Advisor, Konoike Construction Co., Ltd. Dec 2019 Retired as Senior Advisor, Konoike Construction Co., Ltd. Jun 2022 Outside Director, the Company (current)

Apr 1985 Joined Nihon Unisys, Ltd. (now BIPROGY Inc.) Apr 2004 Representative Director, President, Nihon Unisys Learning, Ltd. Apr 2006 General Manager, Human Resource Development Department, Nihon Unisys, Ltd. (now BIPROGY Inc.) Apr 2017 Executive Officer, Officer in charge of Business Operations, General Manager, Business Operations Department, CRMO, CISO, CPO, BIPROGY Inc. Apr 2019 Executive Officer, Officer in charge of Human Resources, General Manager, Human Resources Department, BIPROGY Inc. Apr 2022 Executive Officer, Officer in charge of Global Business, General Manager, Global Business Department, BIPROGY Inc. Apr 2023 Managing Executive Officer, CISO, CPO, Uniadex, Ltd. Jun 2024 Outside Director, Meidensha Corporation (current) Mar 2025 Retired as Managing Executive Officer, Uniadex, Ltd. Jun 2025 Outside Director, the Company (current)

Apr 1983 Joined the Company Oct 2006 General Manager, Planning Department, Steel Structure Division, Machinery Systems Business Headquarters Nov 2007 General Manager, Administration Department, Kurimoto Bridge Engineering Co., Ltd. Nov 2009 General Manager, General Affairs and Administration Department, Chemical Products Division, Industrial and Construction Materials Business Headquarters, the Company Apr 2012 General Manager, Operations Department, Steel Pipe Division Jun 2014 Executive Officer, General Manager, Steel Pipe Division Jul 2021 General Manager, CSR Promotion Office Jun 2023 Audit & Supervisory Board Member (current)

Jun 1996 Joined Century Audit Corporation (now EY Shinnihon LLC), Osaka Office Jul 2003 Opened Arita Certified Public Accountant Office (current) Nov 2014 Outside Director, Nihon PC Service Co., Ltd. (current) May 2015 Outside Director, Daiken Corporation (current) Jun 2017 Outside Audit & Supervisory Board Member, the Company (current)

Apr 1986 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) Apr 2014 Executive Officer, General Manager, International Business Division, Mizuho Financial Group, Inc. Apr 2016 Managing Executive Officer, Head of East Asia Regional Headquarters, Mizuho Financial Group, Inc. Apr 2019 Deputy President, Director, Head of Sales, Mizuho Bank, Ltd. Apr 2020 Deputy President, Director, Assistant to Head of Operations, Mizuho Bank, Ltd. Apr 2021 Representative Director, President, Mizuho Daiichi Financial Technology Co., Ltd. Mar 2025 Outside Director, Nihon Emergency Assistance Inc. (current) Apr 2025 Advisor, Mizuho Daiichi Financial Technology Co., Ltd. May 2025 Outside Director, Trinity Technology Co., Ltd. (now Kokoro no Company Co., Ltd.) (current) Jun 2025 Director, Audit and Supervisory Committee Member, Maruun Co., Ltd. (current) Jun 2025 Outside Audit & Supervisory Board Member, UI Bank Co., Ltd. Jun 2025 Outside Audit & Supervisory Board Member, the Company (current) Jun 2025 Retired as Advisor, Mizuho Daiichi Financial Technology Co., Ltd. Jan 2026 Part-time Director, Japan Pension Service (current) Jun 2026 Retired as Outside Audit & Supervisory Board Member, UI Bank Co., Ltd. Jun 2026 Outside Audit & Supervisory Board Member, Kiraboshi Bank, Ltd. (current)