Executives

(As of January 1, 2026)

Director

Chairman, CEO and Representative Director

Mikishi Takamura

Chairman, CEO and Representative Director

Details

April 1980	Joined the Company
April 2002	General Manager, Finance Group, Administrative Department
April 2005	General Manager, Human Resources & General Affairs Group, Administrative Department
April 2006	General Manager, Human Resources & General Affairs Group and General Manager, Investor Relations & Public Relations Section, Administrative Department
April 2008	Deputy Plant Manager, Nagoya Plant
March 2010	Director, General Manager, Administrative Department
April 2012	DDirector, General Manager, Administrative Division
March 2013	Director, General Manager, Corporate Strategy Department
March 2015	Vice President and Representative Director and General Manager, Corporate Strategy Division
November 2015	President and Representative Director
January 2025	Chairman, CEO and Representative Director (to present)

President, COO and Representative Director

Hidenori Kobuchi

President, COO and Representative Director

Details

April 1988	Joined the Company
April 2010	General Manager, Adhesive Material Group, Performance Chemicals Department
April 2013	General Manager, Polymer & UV-Curable Group, Acrylic Products Department
January 2016	General Manager, Polymer & UV-Curable Group, Acrylic Products Department, General Manager, New Product Exploration Group, Acrylic Products Department
January 2017	General Manager, Polymer Department, Polymer & Oligomer Division
March 2018	Executive Officer, General Manager, Polymer & Oligomer Division , General Manager, Polymer Department, Polymer & Oligomer Division
January 2019	Executive Officer, General Manager, Polymer & Oligomer Division
January 2021	Executive Officer of the Company President and Representative Director, MT AquaPolymer, Inc.
March 2023	Director, General Manager, Supply Chain Management Division and General Manager, Tokyo Sales Department
January 2024	Vice President and Representative Director and General Manager, Corporate Strategy Division
January 2025	President, COO and Representative Director (to present)

Director

Etsuzo Marumoto

Director

Details

April 1987	Joined the Company
January 2017	General Manager, Quality Assurance Department, Technology & Production Administrative Division
January 2018	General Manager, Manufacturing Department, Tokushima Plant
April 2018	Deputy Plant Manager and General Manager, Manufacturing Department, Tokushima Plant
March 2021	Executive Officer, Plant Manager and General Manager, Administrative Department, Yokohama Plant
January 2023	Executive Officer, Plant Manager, Nagoya Plant
March 2024	Director, General Manager of Technology and Production Administrative Division and General Manager of Research and Development Administrative Division
January 2026	Director (to present)

Director

Shoji Takayama

Director

President, MT AquaPolymer,Inc.

Details

April 1985	Joined the Company
March 2013	Director, TG Corporation
January 2018	President and Representative Director, TG Corporation
March 2019	Executive Officer of the Company President and Representative Director, TG Corporation
January 2020	Executive Officer, General Manager, Commodity Chemicals Division, General Manager, Acrylic Monomer Products Department, Commodity Chemicals Division President and Representative Director, MT Ethylene Carbonate Co., Ltd.
March 2024	Director, General Manager, Group Supply Chain Management Division and General Manager, Tokyo Sales Department
January　2025	Director, General Manager, Group Supply Chain Management Division and General Manager, Business Planning Department, Group Supply Chain Management Division and General Manager, Logistics Department, Group Supply Chain Management Division and General Manager, Tokyo Sales Department
January　2026	Director, President, MT AquaPolymer,Inc. (to present)

Director

Akihiko Matsuda

Director

President, Aron Kasei Co., Ltd.

Details

April 1986	Joined the Company
April 2009	Chairman, Toagosei (Zhuhai) Limited Chairman, Toagosei Hong Kong Limited
January 2016	General Manager, Adhesive Group, Functional Chemicals Department
January 2017	General Manager, Adhesives Department, Adhesive Material Division
January 2020	General Manager, Consumer Product Marketing Department, Adhesive Material Division
April 2021	General Manager, Corporate Communication Department, Group Administrative Division
January 2025	CFO and General Manager, Group Corporate Strategy and Administration Division
March 2025	Director, CFO and General Manager, Group Corporate Strategy and Administration Division
January 2026	Director, President, Aron Kasei Co., Ltd. (to present)

Outside Director

Takashi Kato

Outside Director

Details

April 1989	Assistant, Department of Chemical Synthesis, Faculty of Engineering, The University of Tokyo
April 1991	Lecturer, Institute of Industrial Science, The University of Tokyo
July 1993	Associate Professor, Institute of Industrial Science, The University of Tokyo
July 1996	Associate Professor, Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo
April 1999	Associate Professor, Graduate School of Frontier Sciences, The University of Tokyo
May 2000	Professor, Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo
September 2016	President, The Japanese Liquid Crystal Society
May 2018	President, The Society of Polymer Science, Japan
October 2019	Deputy Director, Research Center for Water Environmental Technology, School of Engineering, The University of Tokyo
April 2022	Member of the Board, The Asahi Glass Foundation
March 2023	Director of the Company (to present)
April 2025	Specially Appointed Professor at the Research Institute for Aqua Regeneration, Shinshu University (to present) Specially Appointed Professor at the Research Institute for Interdisciplinary Science, Okayama University (to present)
June 2025	Professor Emeritus, The University of Tokyo (to present)

Outside Director

Masahiko Ito

Outside Director

Details

April 1982	Joined Fujikura Electric Wire Corporation (currently Fujikura Ltd.)
April 2013	Corporate Officer, General Manager, Superconductor Business Development Division, New Business Development Center, Fujikura Ltd
April 2014	Managing Corporate Officer, Deputy Chief, Power & Telecommunication Systems Company and General Manager, Superconductor Business Development Division, New Business Development Center, Fujikura Ltd.
June 2015	Managing Corporate Officer, Director and Deputy Chief, Power & Telecommunication Systems Company, Fujikura Ltd.
April 2016	Representative Director, President, Fujikura Ltd.
April 2021	Representative Director, President & CEO, Fujikura Ltd.
April 2022	Chairman of the Board of Directors, Fujikura Ltd.
June 2022	Chairman of the Japanese Electric Wire & Cable Makers’ Association
March 2024	Director of the Company (to present)
September 2024	Outside Director of TechnoPro Holdings, Inc. (to present)

Outside Director

Reiko Ishiyama

Outside Director

Details

January 2005	Joined Tokio Marine Nichido Better Life Service Co., Ltd.
June 2015	Executive Director, Japan Care Manager Association
April 2016	Specialist Officer for Care Management, Promotion Division, Health and Welfare Bureau for the Elderly, Ministry of Health, Labour and Welfare
April 2018	Professor, Department of Health Services Management, International University of Health and Welfare Graduate School (to present)
April 2019	Board Member, Japan Society of Care Management (to present)
June 2022	Board Member, France Bed Home Care Foundation (to present)
June 2023	Board Member, the Japanese Association of Business Management for Long Term Care (to present)
June 2024	Board Member, Kanagawa Welfare Service Promotion Association (to present)
March 2025	Director of the Company (to present)
April 2025	Outside Director of Tokio Marine Nichido Better Life Service Co.,Ltd. (to present)

Director(Audit and Supervisory Committee Member)

Director, Audit and Supervisory Committee Member

Yoshihito Takahashi

Director, Audit and Supervisory Committee Member

Details

April 1986	Joined the Company
April 2011	Manager, Finance Dept.
April 2012	General Manager, Finance Dept.
April 2015	General Manager, Purchasing Dept.
January 2017	General Manager, Human Resources Dept.
January 2019	General Manager of Nagoya Plant Administration Dept. and General Manager of Nagoya Plant Administration Dept.
January 2020	Deputy General Manager of Nagoya Plant and General Manager of Plant Administration Dept.
March 2022	Executive Officer, General Manager, Information System Dept. President and Representative Director of Toa Business Associe Co., Ltd.
March 2024	Outside Director (Audit and Supervisory Committee Member)(to present)

Outside Director (Audit and Supervisory Committee Member)

Nobuhiko Takano

Outside Director (Audit and Supervisory Committee Member)

Details

July 2006	Commissioner Moji Tax Office, Fukuoka Regional Taxation Bureau
July 2007	Superintending National Tax Inspector, Inspection Department, Tokyo Regional Taxation Bureau
July 2009	Senior Regional Tax Inspector, First Division of Taxation, Tokyo Regional Taxation Bureau
July 2010	Director, Personnel Section 2, General Affairs Department, Tokyo Regional Taxation Bureau
July 2012	Director, Personnel Section 1, General Affairs Department, Tokyo Regional Taxation Bureau
July 2014	Commissioner's Secretariat, Commissioner's Secretariat, National Tax Agency
July 2015	Chief Inspector for National Tax Agency, Commissioner's Secretariat, National Tax Agency
July 2016	Director, Kumamoto Regional Taxation Bureau
August 2017	Registered Certified Public Tax Accountant Director, Nobuhiko Takano Certified Public Tax Accountant Office
March 2018	Outside Director (Audit and Supervisory Committee Member)(to present)
June 2020	Outside Corporate Auditor, NICHIAS Corporation (to present)

Outside Director(Audit and Supervisory Committee Member)

Toshiyuki Teramoto

Outside Director(Audit and Supervisory Committee Member)

Details

April 1981	Joined Mitsui Bank, Ltd.
April 2008	Executive Officer of Sumitomo Mitsui Banking Corporation
April 2011	Managing Executive Officer of Sumitomo Mitsui Banking Corporation
April 2014	Director and Senior Managing Executive Officer of Sumitomo Mitsui Banking Corporation
June 2015	Director of Sumitomo Mitsui Financial Group, Inc.
June 2016	Standing Corporate Auditor of Sumitomo Mitsui Financial Group, Inc. Corporate Auditor of Sumitomo Mitsui Banking Corporation
June 2017	Director of Sumitomo Mitsui Financial Group, Inc.
June 2019	Executive Vice President of Hourai Corporation
December 2019	Representative Director, President and Chief Executive Officer of Hourai Corporation
March 2024	Outside Director (Audit and Supervisory Committee Member)(to present)
October 2024	CEO Representative Director, Chairman and Chief Executive Officer of Hourai Corporation
June 2025	Outside Director (Audit and Supervisory Committee Member), ASAX CO.，LTD. (to present)
October 2025	Representative Director, Chairman and Chief Executive Officer of Hourai Corporation
December 2025	Representative Director and Chairman of Hourai Corporation (to present)

Outside Director(Audit and Supervisory Committee Member)

Ikuko Komachiya

Outside Director(Audit and Supervisory Committee Member)

Details

April 1996	Registered as a lawyer
April 1996	Joined Harago & Partners Law Offices
May 2002	Admitted to the New York State Bar as an attorney
April 2006	Civil Conciliation Commissioner, Tokyo Summary Court
April 2011	Civil Defense Instructor, Legal Training and Research Institute, The Supreme Court
August 2017	Deputy Secretary General, Japan Federation of Bar Associations
April 2021	Chairperson, Committee for the Investigation of Broadcasting Ethics, Broadcasting Ethics & Program Improvement Organization (to present)
July 2021	Founded Legal i Plus Law Office (to present)
June 2024	Outside Director, SEIKITOKYU KOGYO CO., LTD. (to present)
March 2025	Outside Director (Audit and Supervisory Committee Member) (to present)

Executive Officer

Susumu Miho	Director, Aron Kasei Co., Ltd.
Kazutaka Yamada	President, TG Corporation
Fumito Furukawa	Branch Manager, Nagoya Branch President, Toa Techno-Gas Co., Ltd.
Naomitsu Terao
Ichiro Igarashi	Chairman, Toagosei (Shanghai) Management Co., Ltd. Chairman, TOAGOSEI (Zhangjiagang) New Technology Co., Ltd.
Koji Nomura	General Manager, Technology and Production Administrative Div. General Manager, Research and Development Administrative Div.
Yutaka Sasaki	President, Toagosei America Inc.
Atsushi Tamura	Branch Manager, Osaka Branch
Junichi Kato
Eichi Okazaki	General Manager, Corporate Planning Dept., Group Corporate Strategy and Administration Div.
Koji Kimura	General Manager, Technology Administrative Dept., Technology and Production Administrative Div.
Hideo Matsuzaki	Reseach Manager, Nagoya Criatio R＆D Center
Tatsuyuki Nonoyama	General Manager, Group Supply Chain Management Div. General Manager, Business Planning Dept., Group Supply Chain Management Div. General Manager, Logistics Dept., Group Supply Chain Management Div. General Manager, Tokyo Sales Dept.
Kenji Namiki	General Manager, Commodity Chemicals Div.
Ken Nomoto	General Manager, Corporate Planning Dept., Group Corporate Strategy and Administration Div.
Hiroaki Ishii	General Manager, Polymer and Oligomer Div. General Manager, Oligomer Dept., Polymer and Oligomer Div.
Toyokazu Shiroya	President, Toa Business Associe Co., Ltd. General Manager, Information System Dept., Group Corporate Strategy & Administration Div.
Toshiaki Takei	General Manager, New Products Development Div.
Ryuji Takano	General Manager, Performance Chemicals Div. General Manager, Performance Electronics Material Dept. General Manager, Amenity Care＆Electronics Material Dept. President, Toagosei KOREA Co., Ltd.