Apr 1981 Joined the Company Apr 1998 Head of Technology Department, Heavy Equipment Business Division Oct 2000 Executive Officer Apr 2002 Manager, Tokyo Branch Oct 2002 Deputy Head of Technology Division Apr 2004 Managing Executive Officer, Head of Technology Division Jun 2004 Managing Director Apr 2005 Manager, Tokyo Branch Office; Manager, Metropolitan Area Branch Nov 2006 Senior Managing Director Jun 2007 Representative Director, President (current) May 2010 Representative Director, Chairman, O.K. Soil Co., Ltd. (current) Apr 2011 In charge of Technology Division Feb 2012 In charge of General Affairs and Administration Division Apr 2016 In charge of General Affairs and Administration Division Jul 2025 Head of Technology Division; Director in charge of Sales Division (current) Oct 2025 Director in charge of Machinery Construction Promotion Division (current) Apr 2026 Director in charge of Technology Division (current)

Apr 1983 Joined the Company Aug 2002 Manager, General Affairs Department, Administration Division Apr 2005 Manager, Administration Department, Tokyo Branch Office Nov 2008 Manager, Quality Assurance Department, Technology Division Jan 2010 Deputy Head of Administration Division May 2010 Director, O.K. Soil Co., Ltd. Apr 2011 Head of Administration Division; Outside Director, Orion Keisoku Co., Ltd. Jul 2011 Executive Officer Jan 2012 Director, JAFEC USA, Inc. Jun 2013 Director, Executive Officer Apr 2016 Manager, Metropolitan Area Branch Oct 2016 Manager, Tokyo Branch Office Apr 2021 Manager, President's Office; Representative Director, President, JAFEC USA, Inc. (current) Jun 2021 Managing Director, Executive Officer, Head of Technology Division; Director in charge of Administration Division Jun 2023 Head of Administration Division (current); Director in charge of Technology Division Dec 2023 Director, O.K. Soil Co., Ltd. (current) Jul 2024 Senior Managing Director, Executive Officer (current)

Apr 1984 Joined the Company Apr 2008 Manager, Construction Department, Tohoku Branch Jan 2010 Manager, General Construction Department, Technology Division Apr 2012 Manager, Metropolitan Area Branch Oct 2014 Manager, Tokyo Branch Office Apr 2015 Executive Officer, Head of Technology Division Jun 2015 Director, Executive Officer (current) Director, JAFEC USA, Inc. Apr 2017 Representative Director, President, O.K. Soil Co., Ltd. (current)

Apr 1966 Joined National Institute for Resources and Environment, Ministry of International Trade and Industry (MITI) Mar 1991 Director, Planning Office, Research Institute for Pollution and Resources, MITI Mar 1998 Director General, National Institute for Resources and Environment, MITI May 2005 Research Advisor, Geological Environment Research Division, National Institute of Advanced Industrial Science and Technology Jun 2005 Managing Director, Tsukuba Research Support Center Co., Ltd. Jun 2009 Audit & Supervisory Board Member, the Company Jun 2019 Director, the Company (current)

Apr 1976 Joined Daiwa Bank, Ltd. (now Resona Bank, Limited) Mar 2002 Manager, Umeda Branch, Daiwa Bank Jun 2005 Managing Executive Officer, Daiwa Bank Jun 2006 Representative Director, Deputy President and Executive Officer, Daiwa Bank Jun 2008 Representative Director, President, Resona Research Institute Co., Ltd. Jun 2009 Director, Kinki Osaka Bank, Ltd. (now Kansai Mirai Bank, Limited) Jun 2011 Audit & Supervisory Board Member, the Company Jun 2012 Representative Director, President, Shikishima Printing Co., Ltd. Jun 2022 Representative Director, Chairman, Shikishima Printing Co., Ltd. Jun 2023 Chairman, Shikishima Printing Co., Ltd. (current) Jun 2023 Director, the Company (current)

Apr 1981 Joined the Company Apr 1997 Manager, Management Information Office Apr 1999 Manager, Quality Assurance Promotion Office, Technology Division Apr 2014 Manager, Technical Management Department, Technology Division Apr 2017 Manager, Internal Audit Office Apr 2018 Deputy Head of Administration Division Feb 2019 Senior Advisor, Internal Audit Office Jun 2019 Full-time Audit & Supervisory Board Member (current)

Apr 1979 Registered with Osaka Bar Association; affiliated with Shin'ichi Kawai Law Office Dec 1980 Affiliated with Tsuyoshi Funakoshi Law Office Apr 1989 Opened Isogawa & Aiuchi Law Office Apr 1996 Renamed Global Law Office (current) Jun 2011 Audit & Supervisory Board Member, the Company (current)

Apr 1976 Joined Research Institute for Pollution and Resources, Agency of Industrial Science and Technology, MITI Nov 1999 Head of Geoengineering Department, National Institute for Resources and Environment May 2004 Director, Geological Environment Research Division, National Institute of Advanced Industrial Science and Technology Apr 2012 Chief Reviewer, Review Group, International Science and Technology Foundation Jul 2019 Manager in charge of URA, General Affairs Department, Hoshi University Jun 2020 Audit & Supervisory Board Member, the Company (current)

Apr 1985 Joined Daiwa Bank, Ltd. (now Resona Bank, Limited) Nov 2002 Manager, Kumatori Branch, Daiwa Bank Apr 2016 Managing Executive Officer, Daiwa Bank Apr 2018 Senior Managing Executive Officer, Daiwa Bank; Representative Director, President, Resona Research Institute Co., Ltd. Jun 2022 Representative Director, President, DACS Inc. (current) Jun 2023 Audit & Supervisory Board Member, the Company (current)