Apr 1986 Joined Mitsui Mining & Smelting Co., Ltd. (now Mitsui Kinzoku Co., Ltd.) Jun 2011 General Manager, Battery Materials Business Division, Functional Materials Business Unit, Mitsui Mining & Smelting Apr 2014 Executive Officer, General Manager, Battery Materials Business Department, Functional Materials Business Division, Mitsui Mining & Smelting Apr 2015 Executive Officer, General Manager, Catalyst Business Department, Functional Materials Business Division, Mitsui Mining & Smelting Oct 2015 Executive Officer, Deputy Division Head, Functional Materials Business Division, and General Manager, Catalyst Business Department, Mitsui Mining & Smelting Apr 2016 Executive Officer, Deputy Division Head, Functional Materials Business Division, and General Manager, Functional Powder Business Department, Mitsui Mining & Smelting Apr 2018 Executive Officer, General Manager, Human Resources Department, Corporate Planning Division, Mitsui Mining & Smelting Apr 2021 Executive Officer, Secretariat Manager, Corporate Planning Department, Corporate Planning Division, Mitsui Mining & Smelting Jun 2021 Director and Executive Officer, Mitsui Mining & Smelting Apr 2023 Director and Managing Executive Officer, General Manager, Technology Division, Mitsui Mining & Smelting Apr 2024 Director, Mitsui Mining & Smelting Jun 2024 Director, Managing Executive Officer and Assistant to the President, the Company Jun 2025 Representative Director, President and Executive Officer, the Company (current)

Apr 1987 Joined the Company Apr 2011 General Manager, Technology Department, Business Division, the Company Jun 2013 Executive Officer, General Manager, Technology Department, Business Division, the Company Apr 2014 Executive Officer, General Manager, Technology Department, Business Division, the Company Apr 2016 Executive Officer, General Manager, Business Development Department; Manager, Corporate Planning Office; Manager, Information Systems Office, the Company Jun 2017 Executive Officer, Nagoya Branch Manager, Business Division, the Company Jun 2019 Director and Executive Officer, Nagoya Branch Manager, Business Division, and Nagoya Branch Manager, the Company Apr 2021 Director and Executive Officer, Deputy Division Head, Business Division, and Manager, Business Planning Office, the Company Jan 2022 Director and Executive Officer, Manager, Corporate Planning Department, and General Manager, Corporate Planning Department, the Company Apr 2023 Director and Managing Executive Officer, General Manager, Corporate Planning Department, the Company Jun 2023 Director and Managing Executive Officer, General Manager, Corporate Planning Department, and General Manager, Technology Division, the Company Jun 2025 Director and Managing Executive Officer, General Manager, Administration Division, and General Manager, Technology Division, the Company Jun 2025 Representative Director, Senior Managing Director and Senior Managing Executive Officer, General Manager, Administration Division, and General Manager, Technology Division, the Company (current)

Apr 1988 Joined the Company Apr 2012 Manager, Tohoku Branch, the Company Jun 2018 Executive Officer, Manager, Tohoku Branch, the Company Apr 2021 Executive Officer, Manager, Nagoya Branch, the Company Apr 2023 Managing Executive Officer, Deputy Division Head, Business Division, the Company Jun 2023 Director and Managing Executive Officer, General Manager, Business Division, and General Manager, Manufacturing and Procurement Control Department, the Company Apr 2026 Director and Managing Executive Officer, General Manager, Business Division, the Company Jun 2026 Director and Managing Executive Officer, General Manager, Business Division, and Manager, Tohoku Branch, the Company (current)

Apr 1993 Registered as attorney-at-law (Daini Tokyo Bar Association) Aug 2009 Corporate Attorney, the Company Jun 2011 Audit & Supervisory Board Member, the Company (current)

Apr 1989 Joined Mitsui Mining & Smelting Co., Ltd. (now Mitsui Kinzoku Co., Ltd.) Apr 2015 General Manager, Sales Department 3, Sales Division, Mitsui Kinzoku Act Corporation Oct 2015 Deputy Division Head, Sales Division, Mitsui Kinzoku Act Corporation Apr 2022 Executive Officer, Mitsui Mining & Smelting Co., Ltd.; Representative Director and President, Mitsui Kinzoku Act Corporation Apr 2025 Executive Officer, Deputy General Manager, Corporate Planning Department, and Manager, Business Office, Corporate Planning Division, Mitsui Mining & Smelting Co., Ltd. Jun 2025 Director, the Company (current) Apr 2026 Executive Officer, General Manager, Corporate Planning Department, and Manager, Business Office, Corporate Planning Division, Mitsui Kinzoku Co., Ltd. (current)

Apr 1993 Registered as attorney-at-law (Daini Tokyo Bar Association) Feb 1998 Opened Shibata Koichiro Law Office Oct 2017 Outside Director, Moriroku Holdings Co., Ltd. (now Moriroku Co., Ltd.) Jun 2022 Director, the Company (current)

Apr 2007 Associate Professor, Institute of Industrial Science, The University of Tokyo Aug 2009 Professor, Institute of Industrial Science, The University of Tokyo (current) Jun 2022 Director, the Company (current)

Dec 2013 Registered as attorney-at-law (Daiichi Tokyo Bar Association) Dec 2013 Joined Omori Law Office Oct 2014 Housing Production Division, Housing Bureau, Ministry of Land, Infrastructure, Transport and Tourism (MLIT) (fixed-term staff) Apr 2018 Member, Construction Performance Evaluation Review Committee, Kanto Regional Development Bureau, MLIT (current) Jun 2019 Lecturer, National Institute for Land and Infrastructure Management (current) Jun 2019 Lecturer, Japan Construction Training Center (current) Apr 2022 Part-time Lecturer, Kyoritsu Women's University (current) Feb 2023 Partner, Omori Law Office (current) Sep 2024 Part-time Lecturer, College of Science and Technology, Nihon University (current) Jan 2025 Legal Adviser, Joint Contract Conditions Committee for Private Sector Construction Contracts (Nanakai) (current) Jan 2026 Member, Infrastructure Management Strategy Subcommittee, Policy Bureau, MLIT (current) Jun 2026 Director, the Company (current)

Apr 1988 Joined Mitsui Mining & Smelting Co., Ltd. (now Mitsui Kinzoku Co., Ltd.) Apr 2009 President, Mitsui Components Europe, Ltd. (UK) Apr 2011 General Manager, Development Department, Technology Division, Mitsui Kinzoku Act Corporation Apr 2013 President, GECOM Corp. (USA) Apr 2015 Managing Executive Officer, Head of Europe and Americas Business Unit, Mitsui Kinzoku Act Corporation Jun 2018 Director and Managing Executive Officer, General Manager, Technology Development Division, Mitsui Kinzoku Act Corporation Jun 2021 Deputy General Manager, Related Business Division, Mitsui Mining & Smelting Co., Ltd. Jun 2021 Director, the Company (resigned Jun 2022) Apr 2022 General Manager, Technology Department, Mobility Business Division, Mitsui Mining & Smelting Co., Ltd. Apr 2023 Advisor to General Manager, Corporate Planning Department, Corporate Planning Division, Mitsui Mining & Smelting Co., Ltd. Jun 2023 Full-time Audit & Supervisory Board Member, the Company (current)

Apr 1988 Joined Mitsui Mining & Smelting Co., Ltd. (now Mitsui Kinzoku Co., Ltd.) Oct 2005 Assistant Manager, Finance Department, Mitsui Mining & Smelting Jul 2010 Executive Vice President, GECOM Corp. Jul 2019 President, Mitsui Siam Components Co., Ltd., and General Manager, East Asia Business Unit, Mitsui Kinzoku Act Corporation Apr 2021 Executive Officer, Mitsui Kinzoku Act Corporation Apr 2024 Executive Officer (Managing Director), Audit Department, Mitsui Mining & Smelting Co., Ltd. Jun 2024 Audit & Supervisory Board Member, the Company (current) Apr 2025 Executive Officer (Managing Director), General Manager, Audit Department, and Manager, Internal Control Office, Audit Department, Mitsui Kinzoku Co., Ltd. (current)