Birth Date: October 11, 1957

1982 Joined Sumitomo Chemical Co., Ltd.
2010 Executive Officer
2013 Managing Executive Officer
2018 Senior Managing Executive Officer
2018 Representative Director & Senior Managing Executive Officer
2019 Representative Director & President
2025 Chairman of the Board  (current)

Birth Date: August 4, 1960

1985 Joined Sumitomo Chemical Co., Ltd.
2015 Executive Officer
2018 Managing Executive Officer
2020 Representative Director & Managing Executive Officer
2021 Representative Director & Senior Managing Executive Officer
2024 Senior Managing Executive Officer
2025 President
2025 Representative Director & President (current)

Birth Date: February 11, 1963

1986 Joined Sumitomo Chemical Co., Ltd.
2016 Executive Officer
2020 Managing Executive Officer
2025 Senior Managing Executive Officer
2025 Representative Director & Senior Managing Executive Officer (current)

Important Concurrent Post
2019 President, Sumika Finance Co., Ltd. 

Birth Date: March 5, 1958

1981 Joined Sumitomo Chemical Co., Ltd.
2010 Executive Officer
2013 Managing Executive Officer
2018 Senior Managing Executive Officer
2018 Director & Senior Managing Executive Officer 
2022 Director & Executive Vice President (current)

Important Concurrent Post
2024 Director, Sumitomo Pharma Co., Ltd. 

Birth Date: June 1, 1962

1991 Joined Sumitomo Chemical Co., Ltd.
2018 Executive Officer
2021 Managing Executive Officer
2025 Senior Managing Executive Officer
2025 Representative Director & Senior Managing Executive Officer  (current)

Important Concurrent Post
2024 Director, Tanaka Chemical Corporation

Birth Date: December 19, 1951

1993 Professor, Faculty of Economics, The University of Tokyo
1996 Professor, Graduate School of Economics, The University of Tokyo
2007 Dean, Graduate School of Economics, Faculty of Economics, The University of Tokyo
2016 Professor, Faculty of International Social Sciences, Gakushuin University 
2018 Outside Director, Sumitomo Chemical Co., Ltd. (current)
2022 Outside Director, JX Nippon Mining & Metals Corporation (current)
2022 Outside Director, Hagoromo Foods Corporation (current)
2022 Outside Director, Shizuoka Financial Group, Inc. (current)

Birth Date: December 28, 1955

1978 Joined Ministry of Labour (Currently Ministry of Health Labour and Welfare)
2005 Counsellor for Policy Evaluation, Minister’s Secretariat, Ministry of Health Labour and Welfare
2006 Deputy Director-General, Equal Employment, Children and Families Bureau, Ministry of Health Labour and Welfare
2008 Director-General, Equal Employment, Children and Families Bureau, Ministry of Health Labour and Welfare
2010 Director-General for Policies on Cohesive Society, Cabinet Office
2012 Director-General, Social Welfare and War Victims’ Relief Bureau, Ministry of Health Labour and Welfare
2013 Vice Minister of Health Labour and Welfare, Ministry of Health Labour and Welfare
2015 Retired from Ministry of Health Labour and Welfare
2018 Outside Director, Sumitomo Chemical Co., Ltd. (current)

Birth Date: November 12, 1954

1978 Joined Sumitomo Forestry Co., Ltd.
2007 Executive Officer & General Manager, Corporate Planning Department, Sumitomo Forestry Co., Ltd.
2008 Director & Managing Executive Officer, Sumitomo Forestry Co., Ltd.
2010 Representative Director & President, Sumitomo Forestry Co., Ltd.
2020 Representative Director, Chairman of the Board, Sumitomo Forestry Co., Ltd. (current)
2022 Outside Director, Sumitomo Chemical Co., Ltd. (current)
2025 Outside Director, Daiwa Securities Group Inc.  (current)

Birth Date: January 26, 1960

1982 Joined Bank of America Corporation Tokyo Branch
1996 Deputy General Manager (Head of Structured Finance Department), London Branch, The Long-Term Credit Bank of Japan, Limited
2000 Partner (Head of PPP (Public Private Partnership) and Privatization), PwC Financial Advisory Services Co., Ltd. (Currently PwC Advisory LLC)
2007 Deputy Mayor, Yokohama City
2011 Partner (Head of PPP and Infrastructure Asia-Pacific), PwC Advisory Co., Ltd. (Currently PwC Advisory LLC)
2017 President and Representative Director, Veolia Japan K.K. (Currently Veolia Japan GK)
2020 Chairman and Representative Director, Veolia Japan K.K.
2023 Outside Director, Mizuho Financial Group, Inc. (current)
2024 Outside Director, East Japan Railway Company (current)
2024 Outside Director, Sumitomo Chemical Co., Ltd. (current)
2025 Chairman and Director of Veolia Japan GK (current)

Birth Date: October 29, 1956

1979 Joined Sumitomo Chemical Co., Ltd.
2007 Executive Officer
2009 Managing Executive Officer
2014 Senior Managing Executive Officer
2014 Representative Director & Senior Managing Executive Officer
2018 Director & Senior Managing Executive Officer
2019 Director
2019 Standing Audit & Supervisory Board Member 
2025 Director, Standing Audit & Supervisory Committee Member (current)

Birth Date: December 10, 1963

1987 Joined Sumitomo Chemical Co., Ltd.
2016 Executive Officer 
2020 Managing Executive Officer
2025 Director, Standing Audit & Supervisory Committee Member (current)

Birth Date: September 17, 1951

1974 Joined Tetsuzo Ota & Co. (Currently Ernst & Young ShinNihon LLC)
1978 Registered as a certified public accountant (current)
1998 Representative Patner, Showa Ota & Co. (Currently Ernst & Young ShinNihon LLC)
2006 Managing Executive Partner, Ernst & Young ShinNihon (Currently Ernst & Young ShinNihon LLC)
2008 CEO, Ernst & Young ShinNihon LLC (Currently Ernst & Young ShinNihon LLC)
2014 Retired from Ernst & Young ShinNihon LLC
2015 Audit & Supervisory Board Member, Sumitomo Chemical Co., Ltd. (current)
2024 Outside Audit & Supervisory Board Member, Japan Petroleum Exploration Co., Ltd. (current)
2025 Outside Director, Audit & Supervisory Committee Member, Sumitomo Chemical Co., Ltd.  (current)

Birth Date: June 14, 1949

1973 Joined Bank of Japan
1998 General Manager, Sapporo Branch of Bank of Japan
2000 Retired from Bank of Japan
2000 Executive Director, Osaka Securities Exchange (Currently Japan Exchange Group, Inc.)
2001 Executive Director, Osaka Securities Exchange Co., Ltd.
2002 Senior Executive Director, Osaka Securities Exchange Co., Ltd.
2003 President & CEO, Osaka Securities Exchange Co., Ltd.
2013 Director & Representative Executive Officer, Group COO, Japan Exchange Group, Inc. Director, Tokyo Stock Exchange, Inc.
2015 Resigned as Director & Representative Executive Officer, Group COO, Japan Exchange Group, Inc. Resigned as Director, Tokyo Stock Exchange, Inc.
2018 Audit & Supervisory Board Member, Sumitomo Chemical Co., Ltd. 
2020 Outside Director, Toyo Tire Corporation (current)
2025 Outside Director, Audit & Supervisory Committee Member, Sumitomo Chemical Co., Ltd.  (current)

Birth Date: March 8, 1961

1989 Prosecutor
2023 Superintending Prosecutor, the Sapporo High Public Prosecutors Office
2024 Retirement as Prosecutor
2024 Registered as Attorneys (current)
2025 Outside Director, Audit & Supervisory Committee Member, Sumitomo Chemical Co., Ltd.  (current)