Aug 1976 Joined the Company Dec 1978 Director, General Manager of Imported Raw Materials Division Dec 1979 Managing Director May 1987 Senior Managing Director Jun 1989 Representative Director, Executive Vice President Jun 1994 Representative Director, President Jun 2019 Representative Director, President and Executive Officer Jun 2023 Representative Director, Chairman (current)

Apr 1978 Joined the Company Sep 2001 Executive Officer Jun 2002 Executive Officer, General Manager of Materials Management Department Jun 2007 Director, General Manager of Materials Management Department Jun 2017 Managing Director, General Manager of Materials Management Department Jun 2019 Managing Executive Officer, General Manager of Materials Management Department Mar 2020 Managing Executive Officer, General Manager of Materials Management Department and General Manager of TQM Promotion Office Jun 2020 Senior Managing Executive Officer, General Manager of Materials Management Department and General Manager of TQM Promotion Office Jul 2020 Senior Managing Executive Officer, in charge of Materials Management Department and General Manager of TQM Promotion Office Jun 2021 Director, Senior Managing Executive Officer, in charge of Materials Management Department and General Manager of TQM Promotion Office Jun 2022 Representative Director, Executive Vice President and Executive Officer, in charge of Materials Management Department and General Manager of TQM Promotion Office Jul 2022 Representative Director, Executive Vice President and Executive Officer, in charge of Materials Management Department and in charge of TQM Promotion Office Jun 2023 Representative Director, President and Executive Officer (current)

Apr 1975 Joined the Company Jun 2003 Executive Officer Apr 2005 Executive Officer, General Manager of Production Control Office Jun 2006 Director, General Manager of Production Control Office Aug 2006 Director, General Manager of Production Control Office and General Manager of Overseas Business Office Jan 2007 Director, General Manager of Shiga Plant and General Manager of Overseas Business Office Apr 2008 Director, General Manager of Overseas Business Office Jun 2011 Managing Director, General Manager of Overseas Business Office Jun 2015 Senior Managing Director, General Manager of Overseas Business Office Jun 2019 Director, Senior Managing Executive Officer, General Manager of Overseas Business Office Jun 2024 Director, Senior Managing Executive Officer, in charge of Overseas Business Office (current)

Apr 1987 Joined the Company Sep 2008 President, Daiki Aluminium Industry (Thailand) Co., Ltd. Jun 2013 Director, President, Daiki Aluminium Industry (Thailand) Co., Ltd. Jun 2016 Director, President, Daiki Aluminium Industry Indonesia, and President, Daiki Aluminium Industry (Thailand) Co., Ltd. Jun 2019 Executive Officer, President, Daiki Aluminium Industry Indonesia Jun 2020 Managing Executive Officer, President, Daiki Aluminium Industry Indonesia Jun 2024 Director, Managing Executive Officer, General Manager of Overseas Business Office Jun 2025 Director, Senior Managing Executive Officer, General Manager of Overseas Business Office (current)

Apr 2001 Joined The Ikeda Senshu Bank, Ltd. (formerly The Ikeda Bank, Ltd.) Apr 2017 Joined the Company May 2021 General Manager of Planning Office Mar 2022 General Manager of Planning Office and Deputy General Manager of Administration Department (Finance) Jun 2022 Executive Officer, General Manager of Planning Office and Deputy General Manager of Administration Department (Finance) Jun 2025 Director, Managing Executive Officer, General Manager of Planning Office and in charge of Finance, Administration Department Aug 2025 Director, Managing Executive Officer, General Manager of Planning Office and in charge of Administration Department Oct 2025 Director, Managing Executive Officer, in charge of Administration Department, General Manager of Planning Office and General Manager of Diversity Promotion Office (current)

Apr 1978 Registered as attorney-at-law; joined Matsuo Law Office Aug 1981 Joined Hill, Betts & Nash LLP Feb 1988 Established Shiba Sogo Law Office (formerly Tatsuno & Hagiwara Law Office) (current) Jun 2003 Outside Director of the Company (current)

Apr 1978 Joined Mitsubishi Corporation Apr 2009 Executive Officer, General Manager of Non-ferrous Metals Division, Mitsubishi Corporation Apr 2011 President, Mitsubishi Corporation Unimetals Ltd. Apr 2013 President, Mitsubishi Corporation RtM Japan Ltd. Jun 2019 Outside Statutory Auditor, Nippon Yakin Kogyo Co., Ltd. Jun 2021 Outside Director, Nippon Yakin Kogyo Co., Ltd. (current); Outside Director of the Company (current)

Apr 2005 Joined Sumitomo Chemical Co., Ltd. Sep 2011 Director, World in You (formerly WiA) Apr 2013 Director, Asuik NPO Aug 2013 Representative Director, World in You (formerly WIT) (current) Jun 2025 Outside Director of the Company (current)

Apr 1987 Joined the Company May 2008 Manager, Materials Control Section, Materials Management Department Mar 2017 Manager, Materials Control Section, and Internal Audit Office Dec 2018 General Manager of Internal Audit Office Jun 2024 Full-time Statutory Auditor of the Company (current)

Nov 1995 Entered priesthood at Shigisan Gyokuzoin Jun 1997 Head Priest, Shigisan Gyokuzoin (current); Director of General Affairs Department, Shigisan Shingon Sect Apr 2001 Chief Administrator, Chohoonsonji Temple Jun 2017 Outside Statutory Auditor of the Company (current) Apr 2018 Chief Abbot, Shigisan Shingon Sect; Hoshu (Head Priest), Chohoonsonji Temple Apr 2024 Hoshu (Head Priest), Chohoonsonji Temple (current)

Mar 1980 Joined Chuo Accounting Office Audit Corporation (later Misuzu Audit Corporation) Feb 1983 Registered as Certified Public Accountant Jul 2006 Head of Osaka Office, Chuo Accounting Office Audit Corporation (later Misuzu Audit Corporation) Aug 2007 Joined Deloitte Tohmatsu Audit Corporation (currently Deloitte Touche Tohmatsu LLC) Oct 2016 Head of Osaka Office, Deloitte Touche Tohmatsu LLC Jan 2020 Opened Ishiguro CPA Office (current) Jun 2020 Outside Statutory Auditor, Sagawa Express Co., Ltd. (current); Outside Director (Audit and Supervisory Committee Member), Morishita Jintan Co., Ltd. (current) Jun 2021 Outside Statutory Auditor of the Company (current) Jan 2022 Outside Director, Software Service, Inc. (current)

Apr 1994 Joined Taiyo Pearl Co., Ltd. Jul 2000 Joined Konan Accounting Office May 2006 Joined the Company Jul 2011 Seconded to Daiki Aluminium Industry (Thailand) Co., Ltd. Jan 2017 President, Daiki Aluminium Industry (Thailand) Co., Ltd. Dec 2021 President, Daiki Aluminium Industry India Pvt. Ltd. Oct 2025 Advisor, Daiki Aluminium Industry India Pvt. Ltd. Jun 2026 Full-time Statutory Auditor of the Company