Apr 1989 Joined FANUC Corporation Jan 1996 Joined Nippon Tungsten Co., Ltd. Apr 2012 General Manager, Carbide Parts Department, Nippon Tungsten Jul 2015 Head, Die Cutter Business Promotion Office, Carbide Parts Department, Nippon Tungsten Apr 2016 Head, Die Cutter Business Promotion Office, Carbide Parts Department, Machinery Parts Business Division, Nippon Tungsten Aug 2016 President, NIPPON TUNGSTEN USA, INC. Apr 2017 General Manager, Carbide Parts Department, Machinery Parts Business Division, Nippon Tungsten Apr 2018 Deputy General Manager, Machinery Parts Business Division, Nippon Tungsten Jun 2018 Executive Officer, Deputy General Manager, Machinery Parts Business Division, Nippon Tungsten Jun 2019 Director, Executive Officer, General Manager, Machinery Parts Business Division, Nippon Tungsten Jan 2021 Chairman, Shanghai Entei Sangi Industrial Co., Ltd. Apr 2021 Director, Executive Officer, General Manager, Electrical Parts Business Division, Nippon Tungsten Apr 2022 Director, Executive Officer, General Manager, Electrical Parts Business Division, in charge of Corporate Planning, and General Manager, Kiyama Plant, Nippon Tungsten Apr 2023 Director, Executive Officer, in charge of Corporate Planning and Development Technology Center, and General Manager, Kiyama Plant, Nippon Tungsten Apr 2025 Director, Vice President, Executive Officer, in charge of Corporate Planning Department, Nippon Tungsten Apr 2026 Representative Director, President and Executive Officer, Nippon Tungsten (current)

Apr 1986 Joined Royal Co., Ltd. (now Royal Holdings Co., Ltd.) Apr 2006 Joined Nippon Tungsten Co., Ltd. Apr 2014 General Manager, Administration Department, Nippon Tungsten Apr 2016 General Manager, Administration Department, Administration Division, Nippon Tungsten Apr 2018 General Manager, Business Support Department, Business Strategy Division, Nippon Tungsten Apr 2019 Deputy General Manager, Business Strategy Division, and General Manager, Business Support Department, Nippon Tungsten Jun 2019 Executive Officer, Deputy General Manager, Business Strategy Division, and General Manager, Business Support Department, Nippon Tungsten Apr 2020 Executive Officer, Deputy General Manager, Administration Division, and General Manager, Administration Department, Nippon Tungsten Jun 2022 Director, Executive Officer, General Manager, Administration Division, in charge of Compliance, Nippon Tungsten Apr 2025 Director, Executive Officer, General Manager, Administration Division, in charge of Procurement Department and Compliance, Nippon Tungsten Apr 2026 Director, Managing Executive Officer, General Manager, Administration Division, in charge of Procurement Department and Compliance, Nippon Tungsten (current)

Apr 1995 Joined Nippon Tungsten Co., Ltd. Apr 2014 General Manager, Basic Technology Center, Nippon Tungsten Apr 2016 General Manager, Development Technology Center, Nippon Tungsten Apr 2019 Deputy General Manager, Machinery Parts Business Division, Nippon Tungsten Apr 2021 General Manager, Machinery Parts Business Division, Nippon Tungsten Jun 2021 Executive Officer, General Manager, Machinery Parts Business Division, Nippon Tungsten Apr 2025 Executive Officer, General Manager, Technology Development Division, in charge of Quality Assurance Center, and Chairman, Shanghai Entei Sangi Industrial Co., Ltd. Apr 2026 Executive Officer, in charge of Manufacturing Division, Technology Development Division, Quality Assurance Center and Factory Support Department, and General Manager, Kiyama Plant; Chairman, Shanghai Entei Sangi Industrial Co., Ltd. Jun 2026 Director, Executive Officer, in charge of Manufacturing Division, Technology Development Division, Quality Assurance Center and Factory Support Department, and General Manager, Kiyama Plant; Chairman, Shanghai Entei Sangi Industrial Co., Ltd. (current)

Apr 1981 Joined Nippon Tungsten Co., Ltd. Oct 2006 Vice President, SV NITTAN CO., LTD. Apr 2011 General Manager, Sales Department, Nippon Tungsten Apr 2013 General Manager, Ceramics Department, and General Manager, Umi Plant, Nippon Tungsten Apr 2016 General Manager, Ceramics Department, Machinery Parts Business Division, and General Manager, Umi Plant, Nippon Tungsten Apr 2018 General Manager, Internal Audit Department, Nippon Tungsten Jun 2018 Director, Audit and Supervisory Committee Member, Nippon Tungsten (current)

Apr 1990 Joined Kyushu Electric Power Co., Inc. Jul 2015 General Manager, Public Relations Group, Regional Coexistence Headquarters, Kyushu Electric Power Jul 2016 General Manager, Cost Planning Group, Management Planning Headquarters, Kyushu Electric Power Apr 2017 General Manager, Cost Planning Group, Corporate Strategy Division, Kyushu Electric Power Jul 2018 General Manager, Management Planning Group, Corporate Strategy Division, Kyushu Electric Power Jun 2020 Seconded to Kyushu Electric Power Transmission and Distribution Co., Inc. (General Manager, Corporate Planning and General Affairs Headquarters, Corporate Planning Department) Jun 2024 Executive Officer, Deputy Division Head, Corporate Strategy Division, and in charge of matters concerning the Management Audit Office, Kyushu Electric Power Jun 2024 Representative Director, President, Kyuden Records & Information Management Co., Ltd. Jun 2024 Representative Director, President, Kyushu Kogen Kaihatsu Co., Ltd. (current) Jun 2025 Director, Nippon Tungsten (current)

Apr 1980 Joined TOTO Ltd. Jun 2006 Executive Officer, General Manager, Equipment Business Division, TOTO Apr 2007 Executive Officer, General Manager, Tile and Building Materials Business Division, and Representative Director, President, TOTO Materia Co., Ltd. Apr 2010 Executive Officer, General Manager, Purchasing Department, TOTO Apr 2012 Senior Executive Officer, General Manager, Purchasing Division, TOTO Apr 2015 Senior Executive Officer, General Manager, Logistics Division, and Representative Director, President, TOTO Logicom Co., Ltd. Jun 2017 Audit & Supervisory Board Member (Full-time), TOTO Jun 2020 Retired from TOTO Jun 2025 Director, Nippon Tungsten (current)

Apr 1977 Joined Yaskawa Electric Corporation Mar 1999 Vice President, Yaskawa Electric America, Inc. Mar 2006 General Manager, Technology Planning Group, Technology Development Division, Yaskawa Electric Corporation Mar 2010 General Manager, Global Management Control Group, Management Planning Office, Yaskawa Electric Corporation Mar 2014 Responsible for Corporate Planning, Management Planning Office, Yaskawa Electric Corporation Jun 2014 Audit & Supervisory Board Member (Full-time), Yaskawa Electric Corporation Jun 2015 Director, Audit and Supervisory Committee Member (Chairman of the Audit and Supervisory Committee), Yaskawa Electric Corporation May 2018 Retired from Yaskawa Electric Corporation Jun 2019 Director, Audit and Supervisory Committee Member, Nippon Tungsten (current)

Mar 1999 Completed the 51st Legal Training and Research Institute course Apr 1999 Registered with the Fukuoka Bar Association; joined Miura, Okuda & Iwamoto Law Office Apr 2007 Co-managing Partner, Miura, Okuda & Iwamoto Law Office Aug 2012 Co-managing Partner, Miura, Okuda & Sugihara Law Office (current) Jun 2019 Outside Director, City Ascom Co., Ltd. Jun 2020 Director, Audit and Supervisory Committee Member, Nippon Tungsten (current) Jun 2022 Outside Director, Audit and Supervisory Committee Member, Kyushu Electric Power Co., Inc. (current)

Oct 1997 Joined Tohmatsu & Co. (now Deloitte Touche Tohmatsu LLC) Jul 2017 Partner, Tohmatsu Jun 2022 Outside Audit & Supervisory Board Member, Hirata Corporation Jul 2022 Representative, Asako Okabe Certified Public Accountant Office (current) Jun 2023 Outside Director, Audit and Supervisory Committee Member, Hirata Corporation (current) May 2024 Outside Director, Audit and Supervisory Committee Member, Mr. Max Holdings, Inc. (current) Jun 2024 Outside Director, Zenrin Co., Ltd. Jun 2025 Vice Chairman, Northern Kyushu Chapter of the Japanese Institute of Certified Public Accountants (current) Jul 2025 Director, Japanese Institute of Certified Public Accountants (current) Jun 2026 Audit and Supervisory Committee Member, Zenrin Co., Ltd. (current) Jun 2026 Director, Audit and Supervisory Committee Member, Nippon Tungsten (current)