OfficersOfficers
(As of June 26, 2026)
Director
Masayuki Yamada
Tenure as Director: 7 years
Brief career historyPresident
Representative Director
President and Executive Officer
Nobuyoshi Suda
Tenure as Director: 7 years
Brief career historyDirector
Managing Executive Officer
President of R & D and Engineering
Tetsushi Honda
Tenure as Director: 5 years
Brief career historyDirector
Managing Executive Officer
President of Corporate Management and Planning
Shojiro Koike
Assumed office on June 26, 2026
Brief career historyDirector
Managing Executive Officer
President of Industrial Plant BusinessSignificant concurrent positions:
Representative Director of Organo Technology Co., Ltd.
Daisaku Abe
Tenure as Director: 3 years
Brief career historyOutside Director
Significant concurrent positions:
Outside Director, Nissui Corporation
Nobuko Hanano
Tenure as Director: 3 years
Brief career historyOutside Director
Significant concurrent positions:
Lawyer
Partner,KOHWA SOHGOH LAW OFFICES
Outside Audit and Supervisory Board Member, Kanro Inc.
Naomi Kodama
Tenure as Director: 2 year
Brief career historyOutside Director
Significant concurrent positions:
Professor, Faculty of Economics, Meiji Gakuin University
Outside Director, SHOEI CO., LTD.
Masaya Chisaki
Tenure as Director: 1 year
Brief career historyOutside Director
Hirohito Kodama
Assumed office on June 26, 2026
Brief career historyOutside Director
Significant concurrent positions:
Outside Director of Dynapac Co., Ltd. (Audit and Supervisory Committee Member)
Masayuki Yamada
President
Representative Director
President and Executive Officer
- April 1985
- Joined Toyo Soda Manufacturing Co., Ltd. (currently Tosoh Corporation)
- June 2007
- President of Tosoh Bioscience, Inc.
President of Tosoh Bioscience LLC - June 2011
- Associate Director, Deputy Senior General Manager of Bioscience Division and Manager of Planning & Business Development of Tosoh Corporation
- June 2012
- Associate Director, Senior General Manager of Bioscience Division and Manager of Planning & Business Development
Chairman of the Board of Tosoh Europe, N.V. (retired in June 2019) - June 2013
- Director, Senior General Manager of Bioscience Division and Manager of Planning & Business Development of Tosoh Corporation
- June 2015
- President (Representative Director) of Tosoh Techno-System, Inc. (retired in June 2019)
Director of Tosoh Bioscience, Inc. (retired in June 2019)
Director of Tosoh Bioscience LLC (retired in June 2019) - June 2016
- Senior Vice President, Senior General Manager of Bioscience Division of Tosoh Corporation
- June 2017
- Director, Executive Vice President, President of Specialty Group
and Senior General Manager of Bioscience Division
Chairman of the Board of Tosoh America, Inc. (retired in June 2021) - June 2019
- Director, Executive Vice President, General Manager of Research and Development Planning, President of Specialty Group,
and President of Engineering Group of Tosoh Corporation (retired in June 2021)
Director of the Company - June 2021
- Senior Managing Director and Executive Officer
- June 2022
- Director and President (Representative Director), President and Executive Officer (current position)
Nobuyoshi Suda
Director
Managing Executive Officer
President of R & D and Engineering
- April 1984
- Joined the Company
- June 2010
- Deputy General Manager of Planning and Design Dept., Technology & Production Center
- April 2012
- General Manager of Electronics Industry Sales Dept., Plant Division, Industrial Plant Business
and Project Management Office and Engineering Dept., Engineering - January 2013
- Representative Director and General Manager of Organo (Suzhou) Water Treatment Co., Ltd. (retired in April 2016)
- April 2016
- General Manager of Corporate Strategy and Planning Dept., Corporate Management and Planning of the Company
- June 2017
- Executive Officer, General Manager of Corporate Strategy and Planning Dept., Corporate Management and Planning
Chairman of Organo (Vietnam) Co., Ltd. (retired in June 2018) - June 2019
- Director and Executive Officer, President of Corporate Management and Planning and General Manager of Corporate Strategy and Planning Dept. of the Company
- June 2020
- Managing Director and Executive Officer, President of Corporate Management and Planning and General Manager of Corporate Strategy and Planning Dept.
- June 2021
- Managing Director and Executive Officer, President of R & D and Engineering and Senior General Manager of R & D Center
- June 2023
- Managing Director and Executive Officer, President of R & D and Engineering (current position)
Tetsushi Honda
Director
Managing Executive Officer
President of Corporate Management and Planning
- April 1986
- Joined the Company
- April 2012
- Managing Director of Organo (Asia) Sdn. Bhd. (retired in January 2013)
- January 2013
- Director and Deputy President of PT Lautan Organo Water
- April 2015
- President (retired in July 2017)
- June 2017
- Senior General Manager of Power Plant Division, Water Infrastructure and Energy of the Company
- June 2018
- Executive Officer, Senior General Manager of Power Plant Division, Industrial Plant Business
- June 2019
- Executive Officer, Deputy President of Industrial Plant Business, and Senior General Manager of Power Plant Division
- June 2020
- Executive Officer, Senior General Manager of R & D Center, R & D and Engineering
- June 2021
- Director and Executive Officer, President of Corporate Management and Planning and General Manager of Corporate Strategy and Planning Dept.
- June 2023
- Managing Director and Executive Officer, President of Corporate Management and Planning (current position)
- June 2025
- Chairman of Organo (Vietnam) Co., Ltd. (current position)
- March 2026
- Chairman of ORGANO INDIA PRIVATE LIMITED (current position)
Daisaku Abe
Outside Director
- April 1980
- Joined The Industrial Bank of Japan, Limited
- April 2007
- Executive Officer of Mizuho Corporate Bank, Ltd. (currently Mizuho Bank, Ltd.) (retired in April 2009)
- April 2009
- Managing Executive Officer, Mizuho Financial Group, Inc.
- June 2012
- Managing Director, Managing Executive Officer
- April 2013
- Deputy President and Deputy President-Executive Officer
Deputy President-Executive Officer, Mizuho Bank, Ltd. (retired in July 2013 due to merger)
Deputy President-Executive Officer, Mizuho Corporate Bank, Ltd. (retired in April 2019)
Managing Executive Officer, Mizuho Securities Co., Ltd. (retired in April 2014) - June 2014
- Deputy President and Executive Officer, Mizuho Financial Group, Inc. (retired in April 2019)
- June 2019
- Director (Audit and Supervisory Committee Member), Mizuho Trust & Banking Co., Ltd. (retired in April 2020)
Director (Audit and Supervisory Committee Member), Mizuho Securities Co., Ltd. (retired in April 2020)
Outside Director, Mizuho Leasing Company, Limited - April 2020
- Administrative Officer, Mizuho Financial Group, Inc. (retired in June 2020)
- June 2020
- Director and Chairman (Outside Director), Mizuho Leasing Company, Limited
- June 2021
- Director and Chairman
- June 2022
- Executive Adviser (retired in June 2024)
Outside Director, NIPPON STEEL KOWA REAL ESTATE CO., LTD. (current position) - June 2023
- Outside Director of the Company (current)
- June 2024
- Outside Director, Nissui Corporation (current position)
Nobuko Hanano
Outside Director
- April 1991
- Joined Nomura Research Institute, Ltd. (left in April 1995)
- October 2000
- Registered as Lawyer (Dai-Ichi Tokyo Bar Association) (current position)
Joined KOHWA SOHGOH LAW OFFICES - October 2004
- Partner (current position)
- March 2019
- Outside Audit and Supervisory Board Member, Kanro Inc. (current position)
- June 2021
- Outside Audit and Supervisory Board Member of the Company
- June 2023
- Outside Director of the Company (current position)
Naomi Kodama
Outside Director
- April 1993
- Joined Ministry of International Trade and Industry (currently Ministry of Economy, Trade and Industry) (left in March 2018)
- April 2013
- Assistant Professor, Institute of Economic Research, Hitotsubashi University (retired in March 2016)
- April 2016
- Associate Professor, School of International and Public Policy, Hitotsubashi University (retired in March 2018)
- April 2018
- Professor, Nihon University College of Economics (retired in March 2021)
- April 2021
- Professor, Faculty of Economics, Meiji Gakuin University (current position)
- June 2024
- Outside Director of the Company (current position)
- December 2025
- Outside Director, SHOEI CO., LTD. (current position)
Masaya Chisaki
Outside Director
- April 1983
- Joined Tokyo Broadcasting System, Inc. (currently TBS HOLDINGS, INC.)
- June 2018
- Director, TBS HOLDINGS, INC. (retired in June 2024)
Director, Tokyo Broadcasting System Television, Inc. - June 2020
- Managing Director, Tokyo Broadcasting System Television, Inc.
- July 2024
- Executive Advisor
- June 2025
- Outside Director of the Company (current position)
- July 2025
- Advisor, Tokyo Broadcasting System Television, Inc. (current position)
Shojiro Koike
Director
Managing Executive Officer
President of Industrial Plant Business
- April 1988
- Joined the Company
- January 2010
- Deputy Senior General Manager of IEC, Technology & Production Center at the Company
- June 2010
- General Manager of Iwaki Factory Group, Planning and Design Dept., Technology & Production Center at the Company
- April 2016
- General Manager of Pharmaceutical Industry and High Separation Technology Sales Dept., Plant Division, Industrial Plant Business at the Company
- June 2018
- Director of ORGANO PLANT SERVICE CORPORATION
- June 2020
- Executive Officer of the Company
Director and President (Representative Director) of ORGANO PLANT SERVICE CORPORATION (retired in June 2023) - June 2023
- Executive Officer, Deputy President of Corporate Management and Planning, and General Manager of Corporate Strategy and Planning Dept. at the Company
- June 2024
- Managing Executive Officer, Deputy President of Corporate Management and Planning, and General Manager of Corporate Strategy and Planning Dept. at the Company
- June 2025
- Representative Director of Organo Technology Co., Ltd. (current position)
- June 2026
- Director, Managing Executive Officer and President of Industrial Plant Business at the Company (current position)
Hirohito Kodama
Outside Director
- April 1981
- Joined Kagome Co., Ltd.
- June 2006
- Executive Officer, General Manager, Corporate Planning Department
- June 2008
- Director & Executive Officer, General Manager, Research & Development Division
- June 2011
- Director & Managing Executive Officer, General Manager, Research & Development Division
- April 2013
- Director & Managing Executive Officer, CEO, Asia Business Company
- October 2015
- Director & Managing Executive Officer, General Manager, Shared Service Preparation Office
- April 2016
- Director & Managing Executive Office
President & Representative Director (Representative Director) of Kagome Axis Co., Ltd. (retired in October 2017) - March 2018
- Outside Audit & Supervisory Board Member of Dynapac Co., Ltd.
Director (Full-time Audit and Supervisory Committee Member) of Kagome Co., Ltd. (retired in March 2024) - March 2020
- Outside Director of Dynapac Co., Ltd. (Audit and Supervisory Committee Member) (current position)
- June 2023
- Outside Audit and Supervisory Board Member of the Company (current position)
Audit and Supervisory Board Member
Yoshihiro Tajitsu
Tenure as Audit and Supervisory Board Member: 3 years
Brief career historyAudit and Supervisory Board Member (full-time)
Wataru Higuchi
Tenure as Audit and Supervisory Board Member: 7 years
Brief career historyOutside Audit and Supervisory Board Member
Significant concurrent positions:
Lawyer
Certified Public Accountant
Representative Partner, Ootemon Law and Accounting
Executive Officer, Advance Residence Investment Corporation
Outside Director (Audit and Supervisory Committee Member), Marubeni Construction Material Lease Co., Ltd
Atsushi Iwamoto
Assumed office on June 26, 2026
Brief career historyOutside Audit and Supervisory Board Member
Significant concurrent positions:
Lawyer
Anzai Law Offices
Yoshihiro Tajitsu
Audit and Supervisory Board Member (full-time)
- April 1985
- Joined Toyo Soda Manufacturing Co., Ltd. (currently Tosoh Corporation)
- April 1995
- Corporate Management Office of Tosoh Corporation
- December 2005
- Corporate Management Office and New System Project Team of Tosoh Corporation
- January 2008
- Corporate Management Office of Tosoh Corporation
- June 2010
- Outside Audit and Supervisory Board Member, Plas-Tech Corporation
Outside Audit and Supervisory Board Member, Toho Acetylene Co., Ltd.
Corporate Strategy and Consolidated Management Dept., Tosoh Corporation - February 2013
- General Manager of Secretariat for the Audit and Supervisory Board of Tosoh Corporation
- June 2019
- General Manager of Internal Auditing Office of Tosoh Corporation
- May 2022
- Executive Officer and General Manager of Internal Auditing Office of Tosoh Corporation
- June 2022
- Executive Officer and Deputy President of Corporate Management and Planning of the Company
- June 2023
- Audit and Supervisory Board Member (full-time) of the Company (current)
- June 2024
- Outside Audit and Supervisory Board Member, Taihei Chemicals Limited (current)
Wataru Higuchi
Outside Audit and Supervisory Board Member
- October 1993
- Joined Tohmatsu & Co. (currently Deloitte Touche Tohmatsu LLC)
- April 1997
- Registered as a Certified Public Accountant (excluding legal apprenticeship period) (current)
- October 2002
- Registered as a lawyer at Dai-ichi Tokyo Bar Association (current)
Joined Seiwa Kyodo Law Office (Seiwa Meitetsu Law Office) - October 2007
- Partner of Seiwa Kyodo Law Office
- June 2016
- Outside Director (Audit and Supervisory Committee Member), Marubeni Construction Material Lease Co., Ltd. (currently Maruken Lease Co., Ltd.) (current)
- October 2018
- Representative Partner, Ootemon Law and Accounting (current)
- June 2019
- Outside Audit and Supervisory Board Member of the Company (current)
- October 2019
- Executive Officer, Advance Residence Investment Corporation (current)
- March 2022
- Auditor, The Professional Golfers' Association of Japan
Atsushi Iwamoto
Outside Audit and Supervisory Board Member
- April 1993
- Joined Legislative Bureau House of Councillors (retired in March 1997)
- April 1999
- Registered as a lawyer at Dai-ichi Tokyo Bar Association (current)
Joined Anzai Inoue & Toi Law Offices (currently, Anzai Law Offices) (current position) - April 2011
- Civil Conciliation Commissioner, Tokyo Summary Court (current position)
- September 2017
- Special Research Officer, Cabinet Bureau of Personnel Affairs, Cabinet Secretariat (current position)
Executive Officer
"*" indicates those who concurrently serve as Directors.
President and Executive Officer
Masayuki Yamada*
Managing Executive Officer
Nobuyoshi Suda*
Tetsushi Honda*
Shojiro Koike*
Toru Amemiya
Masahisa Sotokawa
Executive Officer
Masahiro Eguchi
Satoshi Kasahara
Taro Oe
Yasuharu Arisawa
Hiromori Mochizuki
Daisaku Yano
Eiji Okanari
Related Links
Management Philosophy & Long-term Management VisionManagement Philosophy & Long-term Management VisionOrgano Group Code of Corporate ConductOrgano Group Code of Corporate ConductCorporate PolicyCorporate PolicyOfficersOfficersLocations (Offices and Affiliates)Locations (Offices and Affiliates)Organo Group Report (Integrated Report)Organo Group Report (Integrated Report)HistoryHistory