Directors
(As of April 9, 2025)
Director

Chairman, CEO and Representative Director
Mikishi Takamura

Mikishi Takamura
Chairman, CEO and Representative Director
Details
April 1980 | Joined the Company |
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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

Hidenori Kobuchi
President, COO and Representative Director
Details
April 1988 | Joined the Company |
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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

Etsuzo Marumoto
Director
General Manager, Technology & Production Administrative Div. and Research & Development Administrative Div.
Details
April 1987 | Joined the Company |
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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 Division and General Manager of Research and Development Division (to present)
|

Director
Shoji Takayama

Shoji Takayama
Director
General Manager, Group Supply Chain Management Div. and General Manager, Business Planning Dept., Group Supply Chain Management Div. and General Manager, Logistics Dept., Group Supply Chain Management Div. and General Manager, Tokyo Sales Dept.
Details
April 1985 | Joined the Company |
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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 (to present) |

Director
Akihiko Matsuda

Akihiko Matsuda
Director
CFO and General Manager, Group Corporate Strategy and Administration Division
Details
April 1986 | Joined the Company |
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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 (to present) |

Outside Director
Takashi Kato

Takashi Kato
Outside Director
Details
April 1989 | Assistant, Department of Chemical Synthesis, Faculty of Engineering, The University of Tokyo |
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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) |

Outside Director
Masahiko Ito

Masahiko Ito
Outside Director
Details
April 1982 | Joined Fujikura Electric Wire Corporation (currently Fujikura Ltd.) |
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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

Reiko Ishiyama
Outside Director
Details
January 2005 | Joined Tokio Marine Nichido Better Life Service Co., Ltd. |
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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

Yoshihito Takahashi
Director, Audit and Supervisory Committee Member
Details
April 1986 | Joined the Company |
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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

Nobuhiko Takano
Outside Director (Audit and Supervisory Committee Member)
Details
July 2006 | Commissioner Moji Tax Office, Fukuoka Regional Taxation Bureau |
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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

Toshiyuki Teramoto
Outside Director(Audit and Supervisory Committee Member)
Details
April 1981 | Joined Mitsui Bank, Ltd. |
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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 (to present) |

Outside Director(Audit and Supervisory Committee Member)
Ikuko Komachiya

Ikuko Komachiya
Outside Director(Audit and Supervisory Committee Member)
Details
April 1996 | Registered as a lawyer |
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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 | President , Aron Kasei Co., Ltd. |
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Kazutaka Yamada | President, TG Corporation |
Fumito Furukawa | Branch Manager, Nagoya Branch President, Toa Techno-Gas Co., Ltd. |
Naomitsu Terao | Branch Manager, Osaka Branch |
Ichiro Igarashi | Chairman, Toagosei (Shanghai) Management Co., Ltd. Chairman, TOAGOSEI (Zhangjiagang) New Technology Co., Ltd. |
Koji Nomura | Plant Manager, Nagoya Plant General Manager, Business Support Dept, Nagoya Plant |
Yutaka Sasaki | General Manager, Aron Alpha Division General Manager, Consumer Product Marketing Department, Aron Alpha Division |
Atsushi Tamura | General Manager, Performance Chemicals Div. General Manager, Performance Electronics Material Dept. General Manager, Amenity Care&Electronics Material Dept. President, Toagosei KOREA Co., Ltd. |
Junichi Kato | Plant Manager, Yokohama Plant General Manager, Business Support Department, Yokohama Plant |
Eichi Okazaki | President, Toagosei America Inc. |
Koji Kimura | President, MT AquaPolymer,Inc. |
Hideo Matsuzaki | Research Manager of the Kawasaki Frontience R&D Center General Manager, R&D Planning Department, Research & Development Administrative Division |
Tatsuyuki Nonoyama | Plant Manager, Takaoka Plant General Manager, Business Support Department, Takaoka Plant |
Kenji Namiki | General Manager, Commodity Chemicals Div. General Manager, Acrylic Monomer Products Dept. |
Ken Nomoto | General Manager, Corporate Planning Department, Group Corporate Strategy and Administration Division |
Hiroaki Ishii | General Manager, Polymer and Oligomer Division General Manager, Oligomer Department, Polymer and Oligomer Division |
Toyokazu Shiroya | President, Toa Business Associe Co., Ltd. General Manager, Information System Department, Group Corporate Strategy & Administration Division |
Toshiaki Takei | General Manager, New Products Development Division General Manager, Mobility Department, New Products Development Division |
Ryuuji Takano | General Manager, Sustainability Division |
Fellow
Tetsuhiko Yoshida | Reseach Manager, Institute for Advanced Sciences |
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Michihiro Kaai | Reseach Manager, Nagoya Criatio R&D Center |