Apr 1983: Joined the Company Mar 2009: General Manager, Fukuoka Branch Apr 2013: General Manager, Kyushu Branch Jun 2013: Executive Officer, General Manager, Kyushu Branch Jun 2015: Managing Executive Officer, General Manager, Head Office and Kyushu Branch Jun 2016: Director, Managing Executive Officer, General Manager, Head Office and Kyushu Branch Apr 2017: Director, Managing Executive Officer, Executive in charge of Construction Business Division Jun 2019: Director, Senior Managing Executive Officer, Executive in charge of Construction Business Division; General Manager of Sales and International Operations Apr 2020: Director, Senior Managing Executive Officer, Head of Construction Business Division; Deputy Head of Safety and Environment Headquarters Jun 2020: Representative Director, Senior Managing Executive Officer, Head of Construction Business Division; Deputy Head of Safety and Environment Headquarters Apr 2021: Representative Director, President and Executive Officer; Head of Safety and Environment Headquarters Apr 2026: Chairman of the Board, Director (current)

Apr 1987: Joined the Company Apr 2012: Deputy General Manager, Tokyo Branch; General Manager, Comprehensive Evaluation Measures Office Apr 2017: Deputy Branch Manager, Tokyo Branch Apr 2018: General Manager, Business Planning Department Apr 2020: General Manager, Business Planning Department, Corporate Management Division Apr 2022: Executive Officer, in charge of Business Planning Department, Corporate Management Division; General Manager, Business Planning Department Apr 2024: Managing Executive Officer, in charge of Business Planning Department, Corporate Management Division; General Manager, Business Planning Department; in charge of Information Systems Department Jun 2025: Director, Managing Executive Officer, in charge of Business Planning Department, Corporate Management Division; General Manager, Business Planning Department; in charge of Information Systems Department Apr 2026: Representative Director, President and Executive Officer; Head of Safety and Environment Headquarters (current)

Apr 1986: Joined the Company Apr 2014: Deputy General Manager, Nagoya Branch; General Manager, Nagoya Sales Office Apr 2016: Deputy Branch Manager, Nagoya Branch Apr 2017: General Manager, Civil Engineering Department, Construction Business Division Jun 2018: Executive Officer, Executive in charge of Construction Business Division; General Manager, Civil Engineering Department Apr 2020: Managing Executive Officer, Executive in charge of Construction Business Division; General Manager, Civil Engineering Department Jun 2020: Director, Managing Executive Officer, Executive in charge of Construction Business Division; General Manager, Civil Engineering Department Apr 2024: Director, Senior Managing Executive Officer, Executive in charge of Construction Business Division; General Manager, Civil Engineering Department Apr 2026: Representative Director, Senior Managing Executive Officer, Head of Construction Business Division; Deputy Head of Safety and Environment Headquarters (current)

Apr 1985: Joined the Company May 2008: General Manager, Development and Real Estate Department, Kyushu Branch Apr 2014: Deputy General Manager, Sales Department, Construction Business Division Apr 2016: General Manager, Sales Department, Construction Business Division Jun 2016: General Manager, Sales Planning Department, Construction Business Division Apr 2019: General Manager, Sales Planning Department, Construction Business Division Jun 2019: Executive Officer, Executive in charge of Construction Business Division; General Manager, Sales Planning Department Apr 2022: Managing Executive Officer, Executive in charge of Construction Business Division; General Manager, Business Planning Department Apr 2025: Managing Executive Officer, Executive in charge of Construction Business Division; General Manager of Private Sector Sales Jun 2025: Director, Managing Executive Officer, Executive in charge of Construction Business Division; General Manager of Private Sector Sales Apr 2026: Director, Senior Managing Executive Officer, Executive in charge of Construction Business Division; General Manager of Sales (current)

Apr 1983: Joined the Company Apr 2012: General Manager, General Affairs and Personnel Department, Administration Division Jul 2012: General Manager, General Affairs and Personnel Department, Administration Division; General Manager, Business Planning Department Apr 2014: General Manager, Business Planning Department Jun 2015: Director, Executive Officer, in charge of Business Planning Department; General Manager, Business Planning Department Jun 2016: Director, Executive Officer, Head of Administration Division; in charge of Business Planning Department; General Manager, Business Planning Department Jun 2017: Director, OBEX Co., Ltd. (current) Jun 2018: Director, Managing Executive Officer, Head of Administration Division; in charge of Business Planning Department; General Manager, Business Planning Department Apr 2020: Director, Managing Executive Officer, Head of Corporate Management Division; in charge of Business Planning Department Apr 2021: Director, Managing Executive Officer, Head of Corporate Management Division; in charge of General Affairs Department, Personnel Department and Business Planning Department Apr 2022: Director, Managing Executive Officer, Head of Corporate Management Division (current)

Apr 1981: Research Assistant, Faculty of Engineering, Kyoto University Apr 1988: Lecturer, Faculty of Engineering, Ehime University Mar 1991: Visiting Researcher, University of London, United Kingdom Apr 1991: Associate Professor, Faculty of Engineering, Ehime University Apr 1998: Professor, Faculty of Engineering, Ehime University Apr 2002: Professor, Graduate School, Kobe University Jan 2011: Professor, Graduate School, Tokyo Institute of Technology Apr 2016: Professor, Tokyo Institute of Technology Jun 2016: Director of the Company (current) Apr 2022: Professor Emeritus, Tokyo Institute of Technology (current) Jun 2022: President, Japan Road Research Institute, General Incorporated Foundation (current) Jun 2022: Chairman, Institute of Systems Science, General Incorporated Association (current)

Mar 1987: Registered as Judicial Scrivener Apr 1988: Joined Harada Judicial Scrivener Office (current) Apr 2003: Civil Mediation Commissioner, Kokura Summary Court (current) Oct 2014: Family Mediation Commissioner, Kokura Branch, Fukuoka Family Court (current) Apr 2017: Member, Wakamatsu Police Station Advisory Council Jun 2020: Director of the Company (current) Apr 2023: Chairperson, Wakamatsu Police Station Advisory Council

Apr 2000: Joined Shabon Soap Co., Ltd. Apr 2001: Director, Shabon Soap Co., Ltd. Jan 2002: Senior Managing Director, Shabon Soap Co., Ltd. Mar 2007: President and Representative Director, Shabon Soap Co., Ltd. (current) Jun 2016: Director, Kitakyushu Baseball Co., Ltd. (current) Jun 2021: Outside Director (Audit and Supervisory Committee Member), Kitakyushu Bank, Ltd. (current) Jun 2022: Director of the Company (current)

Nov 1987: Joined the Company Apr 2003: Section Manager, Business Planning Section, Business Planning Department May 2011: Section Manager, Internal Control Section, General Systems Department Apr 2014: Deputy General Manager and Section Manager, Internal Control Section, General Systems Department Apr 2018: General Manager and Section Manager, Internal Control Section, General Systems Department Apr 2021: General Manager, General Systems Department Apr 2024: General Manager, Risk Management Department; Section Manager, Internal Control Section; Section Manager, Management Systems Section Jun 2024: General Manager, Risk Management Department Jun 2024: Full-time Statutory Auditor of the Company (current)

Apr 1997: Joined The Nippon Credit Bank, Ltd. (now SBI Shinsei Bank, Limited) Jun 2000: Statutory Auditor, Aso Cement Co., Ltd. (now Aso Co., Ltd.) Jun 2001: Director, Aso Co., Ltd. Aug 2001: Director, Aso Cement Co., Ltd. Dec 2005: Outside Director, Dwango Co., Ltd. Jun 2006: Representative Director and Senior Managing Director, Aso Co., Ltd. Oct 2008: Representative Director and Executive Vice President, Aso Co., Ltd. Jun 2010: President and Representative Director, Aso Co., Ltd. (current) Jun 2014: Outside Director, Nittoku Engineering Co., Ltd. Oct 2014: Outside Director, KADOKAWA DWANGO Corporation (now KADOKAWA Corporation) Dec 2015: Outside Director, iREP Co., Ltd. (now Hakuhodo DY ONE Co., Ltd.) Jan 2016: President and Representative Director, Aso Cement Co., Ltd. Oct 2016: Outside Director, D.A. Consortium Holdings Inc. (now Hakuhodo DY ONE Co., Ltd.) Jun 2017: Outside Director, Tsuzuki Denki Co., Ltd. Oct 2018: Director, Nittoku Engineering Co., Ltd. (current) Jun 2021: Outside Director, Tohto Suisan Co., Ltd. Jun 2022: Director, Ohmine Construction Co., Ltd. (current) Jan 2024: Director, Aso Cement Co., Ltd. (current) Jun 2024: Director, Sumiishi Holdings Co., Ltd. (current) Jun 2025: Non-Executive Director, Tohto Suisan Co., Ltd. (current) Jun 2026: Director of the Company

Apr 1988: Joined Sumitomo Trust & Banking Co., Ltd. (now Sumitomo Mitsui Trust Bank, Limited) Jun 2012: General Manager, Wakayama Branch, Sumitomo Trust & Banking Feb 2015: General Manager, Retail Administration Planning Department, Sumitomo Trust & Banking Apr 2017: General Manager, Personal Administration Planning Department, Sumitomo Trust & Banking Apr 2018: General Manager, Umeda Branch and Hankyu Umeda Branch, Sumitomo Trust & Banking Apr 2020: General Manager, Internal Audit Department, Sumitomo Trust & Banking Apr 2021: President and Director, Sumitomo Mitsui Trust Wealth Partners Co., Ltd. Apr 2025: Advisor, Sumitomo Mitsui Trust Wealth Partners Co., Ltd. Jun 2025: Full-time Statutory Auditor of the Company (current)

Apr 1991: Joined The Chiba Bank, Ltd. Jun 2009: Manager, Tenno-dai Branch, The Chiba Bank Jun 2011: Manager, Kinshicho Branch, The Chiba Bank Feb 2014: Deputy General Manager, Branch Support Department, The Chiba Bank Oct 2014: Deputy General Manager, Regional Information Department, The Chiba Bank Feb 2015: Chair, Preparatory Committee, Shinagawa Branch Opening Preparation Office, The Chiba Bank Jul 2015: Manager, Shinagawa Branch, The Chiba Bank Jun 2016: Manager, Motoyawata Branch, The Chiba Bank Jun 2018: Manager, Urayasu Branch, The Chiba Bank Jun 2019: General Manager, Card Business Division, The Chiba Bank Jun 2020: Executive Officer, General Manager, Card Business Division, The Chiba Bank Apr 2022: Managing Executive Officer, General Manager, Head Office Sales Department; Head, Saiwaicho Special Branch Office, The Chiba Bank Apr 2024: Managing Executive Officer, in charge of Prefectural Sales, The Chiba Bank Apr 2026: Senior Staff Member, Group Strategy Department, The Chiba Bank (current) Jun 2026: Statutory Auditor of the Company