Directors

Director

Chairman and Representative Director and CEO

Mikishi Takamura

Chairman and Representative Director and CEO

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 and Representative Director and CEO (to present)

President and Representative Director and COO

Hidenori Kobuchi

President and Representative Director and COO

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 and Representative Director and COO (to present)

Director

Taizo Serita

Director

Details

April 1985	Joined to Aron Kasei Co., Ltd.
June 2007	General Manager, General Affairs and Human Resources Department, Aron Kasei Co., Ltd.
September 2011	General Manager, General Affairs & Legal Group, Administrative Department of the Company
April 2012	General Manager, General Affairs & Legal Department, Administrative Division and General Manager, Investor Relations & Public Relations Section, Administrative Division
March 2014	Director, In charge of Supply Chain Management, Aron Kasei Co., Ltd.
March 2015	Director, In charge of Finance & Supply Chain Management, Aron Kasei Co., Ltd.
January 2016	Director, General Manager, Administrative Division, Aron Kasei Co., Ltd.
March 2019	Executive Officer, General Manager, Information System Department, Group Management Division of the Company President and Representative Director, Toa Business Associe Co., Ltd.
January 2020	Executive Officer, General Manager, Information System Department, Corporate Strategy Division of the Company President and Representative Director, Toa Business Associe Co., Ltd.
March 2022	Director, General Manager, Group Administrative Division and General Manager, Human Resources Development Department, Group Administrative Division of the Company
January 2025	Director (to present)

Director

Etsuzo Marumoto

Director

General Manager, Technology ＆ Production Administrative Div. and Research ＆ Development Administrative Div.

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 Division and General Manager of Research and Development Division (to present)

Director

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
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)

Outside Director

Yuichiro Mori

Outside Director

Details

April 1993	Registered as a lawyer
April 1993	Joined Nagashima & Ohno (currently Nagashima Ohno & Tsunematsu)
June 2002	Joined Jones Day Showa (currently Jones Day) (to present)
July 2012	Supervisory Director, DREAM Private REIT Inc. (to present)
June 2018	Outside Audit & Supervisory Board Member, Keihin Corporation (currently Hitachi Astemo, Ltd.)
March 2021	Director of the Company (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 (to present)
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 (to present)
April 2022	Member of the Board, The Asahi Glass Foundation (to present)
March 2023	Director of the Company (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)

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)

Kiyoko Ishiguro

Outside Director(Audit and Supervisory Committee Member)

Details

April 1991	Registered as a lawyer
April 1995	Partner, Noda, Aihara & Ishiguro Law Office (currently Noda Memorial Law Office)
April 2000	Head of Research Office, Tokyo Bar Association
April 2006	Chairman of Public Relations Committee, Tokyo Bar Association
April 2010	Civil Defense Instructor, Legal Training and Research Institute of the Supreme Court
June 2010	Outside Director of Sato Holdings Co.
September 2017	Outside Auditor of TRAJI Corporation (to present)
March 2019	Outside Director (Audit and Supervisory Committee Member)(to present)
March 2022	Outside Director of Nippon Seiro Co.

Outside Director(Audit and Supervisory Committee Member)

Masahiko Yasuda

Outside Director(Audit and Supervisory Committee Member)

Details

November 1988	Joined Aoyama Audit Corporation (currently PwC Japan LLC)
May 1993	Registered as a Certified Public Accountant
October 2006	Managing Director of PwC Advisory Co.
July 2008	Partner of PwC Advisory Co. Representative Partner of PricewaterhouseCoopers Aarata Audit Corporation (now PwC Japan LLC)
March 2012	President and Representative Director of Benedi Consulting Co., Ltd.(to present)
August 2012	Certified Public Accountant (Masahiko Yasuda Certified Public Accountant Office)(incumbent)
March 2019	Outside Director (Audit and Supervisory Committee Member)(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 (to present)

Executive Officer

Susumu Miho	President , Aron Kasei Co., Ltd.
Kazutaka Yamada	President, TG Corporation
Fumito Furukawa	Branch Manager, Nagoya Branch President, Toa Techno-Gas Co., Ltd.
Katsuhiko Sumita	Executive Officer
Naomitsu Terao	Branch Manager, Osaka Branch
Masaharu Niwa	Executive Officer
Ichiro Igarashi	Chairman, Toagosei (Shanghai) Management Co., Ltd. Chairman, TOAGOSEI (Zhangjiagang) New Technology Co., Ltd.
Futoshi Nishitani	General Manager, Polymer ＆ Oligomer Div. General Manager, Oligomer Dept.
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