DENKA

Executives

As of April 1st, 2025

Board of Directors

Chairman and Representative Director

Toshio Imai
Date of Birth
January 25 1959
April
1982
Joined the Company
October
2006
General Manager, Styrene Div. of the Company
June
2011
General Manager, Corporate Planning Dept. of the Company
April
2013
Executive Officer, Assistant to General Manager, Elastomers & Performance Plastics of the Company
April
2015
General Manager, Elastomers & Performance Plastics of the Company
April
2017
Managing Executive Officer of the Company
April
2019
General Manager, Denka Value-Up Promotion Dept. of the Company
June
2019
Director and Managing Executive Officer of the Company
April
2020
Director and Senior Managing Executive Officer of the Company
April
2021
Representative Director, President and Chief Executive Officer of the Company
April
2025
Chairman and Representative Director of the Company (present)

Representative Director, President & CEO

Ikuo Ishida
Date of Bitrh
March 7, 1962
April
1985
Joined the Company
April
2009
General Manager, Functional Films Dept., Electronics Materials Div. of Electronics Materials Business Group of the Company
October
2011
General Manager, Advanced Fillers Dept., Electronics Materials Business Group of the Company
October
2013
General Manager, Advanced Specialty Materials Dept., Electronics & Innovative Products of the Company
April
2017
Assistant General Manager, Electronics & Innovative Products of the Company
April
2019
Executive Officer and General Manager, Electronics & Innovative Products of the Company
April
2023
Managing Executive Officer of the Company
June
Director and Managing Executive Officer of the Company
April
2025
Representative Director, President and Chief Executive Officer of the Company (present)

Senior Advisor to Directors

Manabu Yamamoto
Date of Birth
March 31, 1956
April
1981
Joined the Company
June
2004
General Manager of Functional Ceramics Div. of Electronics Materials Business Group of the Company
April
2009
Executive Officer, General Manager of Electronics Materials Div. of Electronics Materials Business Group of the Company
April
2011
Senior Executive Officer of the Company
April
2013
Managing Executive Officer, Head of Electronics & Innovative Products of the Company
June
2013
Director and Managing Executive Officer of the Company
April
2015
General Manager of Corporate Planning Dept. of the Company
April
2016
Director and Senior Managing Executive Officer of the Company
June
2016
Outside Audit & Supervisory Board Member of Koatsu Gas Kogyo Co., Ltd. (until June 2019)
April
2017
Representative Director, President and Chief Executive Officer of the Company
April
2021
Chairman and Representative Director of the Company
April
2023
Chairman and Director of the Company
April
2025
Senior Advisor to Directors of the Company (present)

Director and Executive Fellow

Kazuo Takahashi
Date of Birth
March 30, 1960
April
1983
Joined the Company
October
2013
Deputy General Manager, Chiba Plant of the Company
April
2015
General Manager, Ofuna Plant of the Company
April
2017
Executive Officer, General Manager, Omuta Plant of the Company
April
2019
President of Denka Performance Elastomer LLC
April
2021
Managing Executive Officer of the Company
June
2021
Director and Managing Executive Officer of the Company
April
2023
Representative Director and Senior Managing Executive Officer of the Company
April
2025
Director and Executive Fellow of the Company (present)

Directors

Rumiko Nakata
(Outside)
April
1979
Joined Esso Sekiyu K.K.
April
1996
Center for Socio-Economic Research K.K.
June
2000
Joined Pfizer K.K.
February
2007
Manager, Pharmaceutical Development and Human Resources (Public Relations) Dept., Pfizer K.K.
May
2010
General Manager, Human Resources Group, Business Partners, Pfizer K.K.
December
2011
Head of HR and Global Operations, Pfizer K.K.
January
2014
Corporate Officer, Pfizer K.K.
March
2018
Executive Officer, in charge of Diversity & Inclusion, Mitsubishi Chemical Corporation
April
2019
Managing Executive Officer, Supervising – Human Resources, Mitsubishi Chemical Corporation
April
2020
Director of the Board, Managing Executive Officer, Supervising – Administration, Public Relations, Human Resources, Mitsubishi Chemical Corporation
April
2021
Director of the Board, Managing Executive Officer Supervising – Resources, Mitsubishi Chemical Corporation
April
2022
Director of the Board, Mitsubishi Chemical Corporation
March
2023
Outside Director of the Board, Kyowa Kirin Co., Ltd.
June
2024
Outside Director of the Company (present)
Mizuhiro Uchida
Audit Committee Member
Date of Birth
September 24, 1961
April
1984
Joined the Company
April
2008
General Manager, Business Planning Dept., Resin Process Div., Resin Process Business Group of the Company
April
2010
General Manager, Purchasing Dept. of the Company
April
2014
Deputy General Manager, Chiba Plant of the Company
July
2017
General Manager, Internal Auditing Dept. of the Company
April
2021
General Manager, Internal Control Dept. of the Company
April
2023
Assigned to the Audit Committee of the Company
June
2023
Director (Full-time Audit Committee Member) (present)
Toshio Kinoshita
Audit Committee Member (Outside)
Date of Birth
April 12, 1949
July
1983
Registered as Certified Public Accountant
July
1989
Partner, U.S. Coopers & Lybrand L.L.P (current PricewaterhouseCoopers) (until June 1998)
June
1994
Representative employee of Chuo Audit Corporation (until July 2005)
July
1998
Senior Managing Partner for North America, New York Head Office, U.S. PricewaterhouseCoopers L.L.P. (until June 2005)
July
2005
Management Board Member for International Business of Tokyo Office of ChuoAoyama PricewaterhouseCoopers (until June 2007)
July
2007
Chief Executive of The Japanese Institute of Certified Public Accountants (JICPA) (until July 2013)
July
2013
Council Member of JICPA (until July 2016)
June
2014
Outside Audit & Supervisory Board Member of Panasonic Corporation (current Panasonic Holdings Corporation) (until June 2022)
July
2014
Representative Director of Global Professional Partners (present)
August
2014
Outside Corporate Auditor of Weathernews Inc. (until August 2018)
March
2015
Outside Director of Asatsu-DK Inc. (until December 2018)
June
2015
Outside Audit & Supervisory Board Member of the Company
June
2015
Outside Director of TACHI-S CO., LTD. (present)
July
2015
Outside Director of Mizuho Bank, Ltd. (until September 2019)
January
2018
Outside Director of ThreePro Group Inc. (current GiG Works Inc.) (until January 2022)
June
2019
Outside Director (Audit Committee Member) of the Company (present)
Akio Yamamoto
Audit Committee Member (Outside)
Date of Birth
December 2, 1951
April
1974
Joined Mitsui & Co., Ltd.
April
1999
President of Mitsui & Co., Benelux S.A./N.V.
April
2004
Vice President of Synthetic Resin & Inorganic Chemical Products Business Unit of Mitsui & Co., Ltd.
April
2007
Executive Officer of Mitsui & Co., Ltd. (until March 2010), President of Mitsui & Co. (Thailand) Ltd.
April
2009
Representative Director and President of Mitsui Bussan Plastic Trade Co., Ltd. (present Mitsui & Co. Plastics Ltd.) (until June 2014)
June
2014
Counselor of Mitsui & Co. Plastics Ltd. (until June 2015)
June
2015
Outside Director of the Company
June
2021
Outside Director (Audit Committee member) of the Company (present)
Miyuki Matoba
Audit Committee Member (Outside)
Date of Brith
August 15, 1973
April
2000
Registered as a lawyer (Tokyo Bar Association)
April
2013
Executive Governor of the Japan Federation of Bar Associations (until March 2014)
October
2015
Senior Leader, Management Support Division of MOS FOOD SERVICES, INC.
April
2018
Risk Management & Compliance Group Leader of MOS FOOD SERVICES, INC. (until March 2019)
April
2019
General Manager, Risk Management & Compliance Office of MOS FOOD SERVICES, INC. (until September 2020)
September
2020
Intellectual Property and Legal Div., General Affairs H.Q. of NITTO KOHKI CO., LTD.
April
2021
General Manager, Intellectual Property and Legal Div., General Affairs H.Q., and compliance supervisor of NITTO KOHKI CO., LTD. (present)
June
2021
Outside Director (Audit Committee Member) of the Company (to date)

Executive Officers

President and Chief Executive Officer

Ikuo Ishida

Senior Managing Executive Officer

Rimiru Hayashida
Chief Financial Officer (CFO)
Chief Supply Chain Officer (CSCO)
Accounting Dept., Finance Dept.,
Corporate Communications Dept.,
Purchasing Dept., Logistics Dept.

Managing Executive Officers

Yukio Sasagawa
Gosen Site
Masanobu Kosaka
Chief Technical Officer (CTO)
Production & Process Technology Dept.,
Digital Strategy & Innovation Dept.,
Engineering Dept.
Kei Hara
Chief Human Resource Officer (CHRO)
Chief Compliance Officer (CCO)
Corporate Planning Dept.,
Best Practice Promoting Dept.,
HR Dept., DCU, DCG, Chinese Business

Executive Officers

Michio Kawamura
Environment and Safety Dept.,
Quality Assurance Dept.,
Sustainability Promotion Dept.
Masahiro Kawai
Managing Director of DCHA, DSPL, DAPL
Takeshi Hagiwara
Omi Plant
Masahiro Omata
Polymer Solutions
Hiroto Horiuchi
Electronics & Innovative Products
Tetsuo Noguchi
Shibukawa Plant
Koji Nishimura
Omuta Plant
Taro Inada
Life Innovation
Akinori Adachi
Administrative Dept., Legal Dept., Secretary Dept., Internal Control Dept.
Muneatsu Miida
President of Denka Performance Elastomer LLC
Hiromichi Awada
Chiba Plant
Akira Kasahara
General Manager Accounting Dept.
Koya Takahashi
Elastomers & Infrastructure Solutions
Masahide Yamada
Chief Scientific Officer (CSO)
New Business Development
Innovation Center

DCHA: Denka Chemicals Holdings Asia Pacific Pte.Ltd.
DSPL: Denka Singapore Pte. Ltd.
DAPL: Denka Advantech Pte. Ltd.
DCU: Denka Corporation
DCG: Denka Chemicals G.m.b.H