Mar 1969 Joined the Company Dec 1973 Director, General Manager of Planning Office, the Company Jun 1974 Managing Director, the Company Jan 1978 Representative Director, Senior Managing Director, the Company Dec 1981 Representative Director, President, the Company Jun 2017 Director, Chairman of the Board, the Company (current)

Apr 2008 Divisional Operating Officer, Steel Products, Americas Division, Mitsui & Co., Ltd. Oct 2009 General Manager, Steel Overseas Business Division, Mitsui & Co., Ltd. Apr 2012 General Manager, Business Development Department, the Company Jun 2012 Managing Director in charge of Business Development, the Company Jun 2017 Representative Director, President, the Company (current)

Apr 2013 Chief Administrative Officer, Europe, Middle East and Africa Division, Mitsui & Co., Ltd.; Director, Mitsui & Co. Europe Ltd. Jul 2015 Managing Executive Officer, General Manager, Heavy Plate and Steel Pipe Division, Mitsui & Co. Steel Ltd. Jun 2017 Managing Director in charge of Business Development Department, the Company Jun 2020 Managing Director in charge of Overseas Business Division, the Company Jun 2021 Director, Managing Executive Officer in charge of Overseas Business Division, the Company Jul 2022 Director, Managing Executive Officer in charge of Overseas Business Division and Sustainability Management Promotion Office (now Sustainability Management Division), the Company Sep 2024 Representative Director, Managing Executive Officer in charge of General Affairs Department, Human Resources Department, System Management Department and Sustainability Management Promotion Office, the Company (current)

Apr 1998 Joined the Company Jul 2020 General Manager, Steelmaking Department, Yamato Steel Co., Ltd. Jul 2021 Executive Officer, General Manager, Steelmaking Department, Yamato Steel Co., Ltd. Jan 2023 Plant Manager, POSCO-Yamato Vina Steel Joint Stock Company Jun 2024 Director, Plant Manager, POSCO-Yamato Vina Steel Joint Stock Company, the Company Apr 2025 Director, Executive Officer in charge of Technology Division (formerly Technology Division and Technology Development Department), the Company (current)

Jan 1999 Managing Director, Siam Yamato Steel Company Limited Jul 2004 Executive Vice President, Cementhai Holding Co., Ltd. Feb 2005 Director, Siam Yamato Steel Company Limited (current) Jul 2005 President, Cementhai Holding Co., Ltd. Jan 2011 Advisor, The Siam Cement Public Company Limited Jun 2011 Director, the Company (current) Jul 2020 Director, SCG Ceramics Public Company Limited

Jun 2007 Vice President and Director, Kobe Shushinkan Co., Ltd. Aug 2011 President and Representative Director, Kobe Shushinkan Co., Ltd. (current) Jun 2015 Director, the Company (current)

Jun 2004 Director and Vice President, Asahi Kogyo Co., Ltd. Apr 2005 Representative Director and Vice President, Asahi Kogyo Co., Ltd. Jan 2006 Representative Director and President, Asahi Kogyo Co., Ltd. Jun 2015 Senior Advisor, Asahi Kogyo Co., Ltd. Jun 2016 Director, the Company (current)

Jul 2007 General Manager, Overseas Regional Business Division, Bridgestone Corporation Jun 2008 Chairman and General Manager, Bridgestone (China) Investment Co., Ltd. Mar 2010 Executive Officer, Bridgestone Corporation; Chairman and General Manager, Bridgestone (China) Investment Co., Ltd. Jul 2011 Executive Officer in charge of Specialty Tire Business, Bridgestone Corporation Sep 2012 Executive Officer in charge of Overseas Regional Tire Business; General Manager, Overseas Regional Tire Business Division, Bridgestone Corporation Jul 2014 Executive Officer, Bridgestone Corporation; Director and COO, Bridgestone Asia Pacific Pte. Ltd. Mar 2015 Executive Officer, Bridgestone Corporation; Director and COO, Bridgestone South Africa (Pty) Ltd. Jun 2019 Director, the Company (current)

Apr 2009 Executive Officer; Vice President and President, Mitsui & Co. (U.S.A.), Inc. Apr 2010 Executive Officer, General Manager, Steel Products Division, Mitsui & Co., Ltd. Apr 2011 Managing Executive Officer, General Manager, Steel Products Division, Mitsui & Co., Ltd. Apr 2014 Senior Managing Executive Officer; President, Mitsui & Co. (U.S.A.), Inc. Apr 2015 Vice President Executive Officer; President, Mitsui & Co. (U.S.A.), Inc. Jun 2016 Representative Director and Executive Vice President, Mitsui & Co., Ltd. Apr 2017 Japanese Member, APEC Business Advisory Council Jun 2017 Advisor, Mitsui & Co., Ltd. Jun 2021 Director, the Company (current)

Jan 2005 Deputy Corporate Director in charge of Corporate Planning, The Siam Cement Public Company Limited Jun 2007 Corporate Director in charge of Corporate Organization Development, The Siam Cement Public Company Limited Jan 2019 Corporate Director and Advisor, The Siam Cement Public Company Limited Jun 2022 Director, the Company (current)

Apr 1991 Joined the Company Jul 2010 General Manager, General Affairs Department, the Company Jun 2015 Director, General Manager, General Affairs Department, the Company Dec 2015 Director, General Manager, General Affairs Department; in charge of Internal Control and Internal Audit, the Company Jul 2016 Director, General Manager, General Affairs Department; in charge of Internal Audit, the Company May 2019 Director, General Manager, General Affairs Department, the Company Jun 2020 Full-time Audit & Supervisory Board Member, the Company (current)

Feb 2003 General Manager, Milan Branch, Mizuho Corporate Bank, Ltd. (now Mizuho Bank, Ltd.) Mar 2004 General Manager, Market Operations Department, Mizuho Corporate Bank, Ltd. Jan 2005 General Manager, Operations Division, Mizuho Corporate Bank, Ltd. Apr 2007 General Manager, IT and Systems Division, Mizuho Corporate Bank, Ltd. Apr 2008 Executive Officer, General Manager, IT and Systems Division, Mizuho Corporate Bank, Ltd. Apr 2011 Managing Executive Officer, General Manager, IT Division, Mizuho Securities Co., Ltd. Jun 2014 Senior Managing Director, Nihon Securities Technology Co., Ltd. Jun 2015 Outside Audit & Supervisory Board Member, Kogin Lease Co., Ltd. Jun 2019 Full-time Audit & Supervisory Board Member, the Company (current)

Apr 1998 Registered as attorney-at-law; joined Sawada Kikui Law Office (now Sawada, Nakagami & Mori Law Office) Apr 2005 Partner Attorney, Sawada Nakagami Law Office (now Sawada, Nakagami & Mori Law Office) May 2019 Representative Attorney, Sawada, Nakagami & Mori Law Office (current) Jun 2019 Audit & Supervisory Board Member, the Company (current) May 2020 Outside Director (Audit and Supervisory Committee Member), MORESCO Corporation (current) Apr 2022 President, Hyogo Bar Association