Jan 1997 Vice President and Director, Takahagi Coal Mining Co., Ltd. Jun 1998 Audit & Supervisory Board Member, the Company Jun 1999 Director, the Company Jan 2003 Executive Vice President and Representative Director, Nan-yu Shosha Co., Ltd. Mar 2003 Director, Keiyo Gas Co., Ltd. Jun 2014 Representative Director, Vice Chairman, the Company Jun 2016 Representative Director, Chairman, the Company (current) Aug 2016 Representative Director, Executive Vice President, Keiyo Gas Co., Ltd. Sep 2016 Representative Director, President, Nan-yu Shosha Co., Ltd. (current) Oct 2016 Representative Director, Chairman, Keiyo Gas Co., Ltd. (current)

Apr 1986 Joined Mitsui Mining & Smelting Co., Ltd. Oct 2007 General Manager, Sales Department, Functional Powder Business Division, Functional Materials Business Unit, Mitsui Mining & Smelting Jun 2011 General Manager, Sales Department, Battery Materials Business Division, Mitsui Mining & Smelting Jun 2013 Manager, Corporate Planning Office, Corporate Planning Department, Mitsui Mining & Smelting Jun 2013 Chairman, Mitsui Kinzoku Trading (Shanghai) Co., Ltd. Jan 2016 General Manager, Human Resources Department, Corporate Planning HQ, Mitsui Mining & Smelting Apr 2016 Executive Officer, General Manager, Human Resources Department, Corporate Planning HQ, Mitsui Mining & Smelting Apr 2018 Executive Officer, General Manager, Functional Powder Business Division, Functional Materials Business Unit, Mitsui Mining & Smelting Jun 2018 Audit & Supervisory Board Member, the Company Apr 2019 Executive Officer, General Manager, Functional Powder Business Division, Functional Materials Business Unit, Mitsui Mining & Smelting Oct 2019 Executive Officer, Deputy Head, Functional Materials Business Unit, concurrently General Manager, Functional Powder Business Division, Mitsui Mining & Smelting Apr 2020 Executive Officer, Deputy Head, Functional Materials Business Unit, Mitsui Mining & Smelting Apr 2021 Executive Officer, in charge of special assignments for the President, Mitsui Mining & Smelting Jun 2021 Director and Executive Officer, General Manager, Corporate Planning Office, the Company Apr 2022 Director and Executive Officer, General Manager, Sales HQ, the Company Jun 2023 Representative Director, President and Executive Officer, General Manager, Sales HQ, the Company; Director and President, Powdertech International Corp. (current) Apr 2024 Representative Director, President and Executive Officer, the Company (current)

Apr 1989 Joined Keiyo Gas Co., Ltd. Apr 2001 Assistant Manager, Accounting Section, Accounting Department, Keiyo Gas Co., Ltd. Apr 2006 Deputy Manager, IT Systems Operation and Management Group, Keiyo Gas Co., Ltd. Mar 2007 Assigned to General Affairs and Human Resources Department, Keiyo Gas Co., Ltd.; on loan to Nan-yu Shosha Co., Ltd. as Deputy General Manager, General Affairs and Accounting Department Feb 2012 General Manager, General Affairs Department, Nan-yu Shosha Co., Ltd. Jun 2012 Audit & Supervisory Board Member, the Company Jun 2018 Director, the Company (current) Apr 2024 General Manager, Administration Division, Nan-yu Shosha Co., Ltd. Jun 2024 Director, General Manager, Administration Division, Nan-yu Shosha Co., Ltd. (current)

Apr 1989 Joined Nihon Tippun Co., Ltd. (now Powdertech) Oct 2010 General Manager, R&D Department, Career Business Division, the Company Apr 2012 General Manager, Development Department, Career Business Division, the Company Apr 2016 General Manager, Manufacturing Department, Career Business Division, the Company Apr 2018 Deputy General Manager, Career Business Division, concurrently General Manager, Manufacturing Department, the Company Apr 2019 General Manager, Career Business Division, the Company Jun 2019 Director, General Manager, Career Business Division, the Company Jun 2021 Director and Executive Officer, General Manager, Career Business Division, the Company Apr 2022 Director and Executive Officer, General Manager, Production HQ, the Company Jun 2023 Director and Managing Executive Officer, General Manager, Production HQ, the Company Apr 2024 Director and Managing Executive Officer, the Company Apr 2025 Director, Wonder Keep Takahagi Co., Ltd. (current) Apr 2026 Director and Senior Managing Executive Officer, the Company (current)

Mar 1991 Registered as Certified Public Accountant Jul 2001 Opened Takao Mori CPA Office; Head (current) May 2003 Registered as Certified Tax Accountant Sep 2013 Partner, Seinan Audit Corporation Jun 2015 Outside Director, Aisei Yakkyoku Co., Ltd. Mar 2016 Outside Director, Keiyo Gas Co., Ltd. (current) Jan 2018 Representative Partner, Seinan (now Fujimi) Audit Corporation (current) Jun 2021 Director, the Company (current)

Apr 1993 Joined the Company Apr 2012 Deputy General Manager, Development Department, Career Business Division, the Company Apr 2016 General Manager, Market Development Department, concurrently General Manager, Development Department, Career Business Division, the Company Apr 2019 General Manager, Market Development Department, the Company Jun 2021 Executive Officer, General Manager, Market Development Department, the Company; Director, Powdertech International Corp. (current) Apr 2022 Executive Officer, General Manager, Development HQ, concurrently General Manager, Market Development Department, the Company Jun 2023 Director and Executive Officer, General Manager, Development HQ, concurrently General Manager, Market Development Department, the Company Apr 2024 Director and Executive Officer, the Company Apr 2026 Director and Managing Executive Officer, General Manager, Business Planning Department, the Company (current)

Apr 1999 Entered Legal Training and Research Institute (53rd class) Oct 2000 Joined Okazaki, Ohashi & Maeda Law Offices Sep 2007 Washington D.C. Office, Foley & Lardner LLP Jul 2008 Returned to Okazaki, Ohashi & Maeda Law Offices Apr 2010 Partner, Okazaki, Ohashi & Maeda Law Offices (now Tokei Sogo Law Office) (current) Jun 2015 Outside Director, GMO Media, Inc. (current) Oct 2019 Legal Counsel, the Company Jun 2024 Director, the Company (current)

Apr 1992 Joined Mitsui Mining & Smelting Co., Ltd. Apr 2020 General Manager, Catalyst Business Division, Mitsui Mining & Smelting Apr 2021 Executive Officer, General Manager, Catalyst Business Division, Functional Materials Business Unit, Mitsui Mining & Smelting Apr 2022 Executive Officer, General Manager, Planning Department, Mobility Business Unit, Mitsui Mining & Smelting Apr 2024 Executive Officer, General Manager, Corporate Planning Department, Corporate Planning HQ, Mitsui Mining & Smelting Apr 2025 Executive Officer, Deputy Head, Corporate Planning HQ, Mitsui Mining & Smelting (current) Jun 2025 Director, the Company (current)

Apr 1985 Joined the Company Oct 2006 General Manager in charge of Accounting, Management Department, the Company Oct 2012 Deputy General Manager, Management Department, the Company Apr 2016 General Manager, Management Department, the Company Jun 2018 Director, General Manager, Management Department, the Company Jun 2021 Director and Managing Executive Officer, General Manager, Management Department, the Company Apr 2022 Director and Managing Executive Officer, General Manager, Administration HQ, the Company Apr 2024 Director, the Company May 2026 Audit & Supervisory Board Member, the Company (current)

May 1988 Joined Keiyo Liquefied Gas Co., Ltd. (now Keiyo Gas Liquid Co., Ltd.) Oct 2010 Manager, Sales Department, Nan-yu Shosha Co., Ltd. Sep 2012 General Manager, Sales Department, Nan-yu Shosha Co., Ltd. Jun 2020 Audit & Supervisory Board Member, the Company (current) Apr 2024 General Manager, Sales HQ, Nan-yu Shosha Co., Ltd. Jun 2024 Director, General Manager, Sales HQ, Nan-yu Shosha Co., Ltd. Jun 2025 Managing Director, General Manager, Sales HQ, Nan-yu Shosha Co., Ltd. (current)

Apr 1992 Joined Mitsui Mining & Smelting Co., Ltd. Oct 2007 Director, Compania Minera Santa Luisa S.A. Sep 2011 Assistant General Manager, Finance Department, Mitsui Mining & Smelting Aug 2018 Deputy General Manager, Accounting Department, Corporate Planning HQ, Mitsui Mining & Smelting Apr 2020 Manager in charge, ICT Management Division, Mitsui Mining & Smelting Jun 2020 General Manager, Accounting Department, Mitsui Mining & Smelting Apr 2023 Executive Officer, General Manager, Accounting Department, Corporate Planning HQ, Mitsui Mining & Smelting Jun 2025 Audit & Supervisory Board Member, the Company (current) Apr 2026 Managing Executive Officer, General Manager, Corporate Planning HQ, Mitsui Kinzoku Co., Ltd. (current)