JP EN
Contact Us

Directors and Audit & Supervisory Board Members

As of June 25, 2025

  • President & CEO YAMAJI Naoki

    View Full Profile

    Career Profile

    Apr. 1991
    Joined the Company
    Apr. 2013
    General Manager in charge of Planning Department, Yokkaichi Reorganization Division, Production Control Headquarters
    Apr. 2014
    General Manager of COO Office
    Apr. 2015
    Executive General Manager of Plastic Materials Business Division, Business Headquarters
    Apr. 2016
    Concurrently in charge of Tokyo Headquarters
    Apr. 2017
    Executive General Manager in charge of Corporate Planning Headquarters
    Jun. 2017
    Director and in charge of Personnel & General Affairs Headquarters
    Apr. 2018
    Concurrently in charge of Production Control Headquarters
    Apr. 2020
    Managing Director
    Administrative Supervisor
    Apr. 2021
    R&D Supervisor
    Apr. 2022
    President & CEO (current)

  • Representative Managing Director & CFO SHIMIZU Shinji

    View Full Profile

    Career Profile

    Apr. 1992
    Joined the Company
    Apr. 2014
    General Manager of Personnel & General Affairs Department, Personnel & General Affairs Division
    Apr. 2016
    General Manager of Shuang Yi Li (Tianjin) New Energy Co., Ltd.
    Apr. 2018
    Board Director of Shuang Yi Li (Tianjin) New Energy Co., Ltd.
    Jun. 2019
    General Manager of Financial Division, Financial Headquarters
    Apr. 2020
    Executive Officer
    Executive General Manager in charge of Production Headquarters
    Apr. 2022
    Administrative Supervisor
    Jun. 2022
    Director
    Apr. 2025
    Representative Managing Director & CFO (current)

  • Director SAKAMOTO Mami

    View Full Profile

    Career Profile

    Apr. 1988
    Joined the Company
    Apr. 2018
    General Manager of President’s Special Mission Office
    Dec. 2018
    General Manager of Public & Investor Relations Department
    Apr. 2019
    General Manager of Public & Investor Relations Department, Corporate Planning Headquarters
    Apr. 2020
    Executive General Manager
    Senior Executive General Manager of Administrative Headquarters
    Apr. 2021
    Executive General Manager of Public & Investor Relations Department
    Apr. 2023
    Executive General Manager of Strategy Headquarters
    Concurrently Senior Executive General Manager of Life Sciences Headquarters
    Apr. 2024
    Senior Executive General Manager (current)
    Apr. 2025
    Senior Executive General Manager of Administrative Headquarters (current)
    Jun. 2025
    Director (current)

  • Director KITAO Masahiro

    View Full Profile

    Career Profile

    Apr. 2005
    Joined the Company
    Apr. 2020
    General Manager of Vehicles, Electronics & IT Materials Sales Department
    Oct. 2022
    Concurrently in charge of Nagoya Office
    Apr. 2023
    Executive General Manager
    Senior Executive General Manager of Sales Headquarters
    Apr. 2024
    Senior Executive General Manager (current)
    Apr. 2025
    Senior Executive General Manager of Business Headquarters (current)
    Jun. 2025
    Director (current)

  • Director*1 OKUYAMA Kikuo

    View Full Profile

    Career Profile

    Oct. 1990
    Professor of Department of Chemical Engineering, Cluster 3, Faculty of Engineering of Hiroshima University
    Apr. 2001
    Professor of Department of Chemical Engineering, Graduate School of Engineering of Hiroshima University
    Apr. 2013
    Professor Emeritus of Chemical Engineering of Hiroshima University (current)
    Special Appointment Professor of Hiroshima University
    Jun. 2017
    Managing Director of Hosokawa Powder Technology Foundation
    Jun. 2021
    Outside Director of the Company (current)
    Jun. 2022
    Auditor of Hosokawa Powder Technology Foundation
    Jun. 2022
    Vice President of The Information Center of Particle Technology, Japan (current)

  • Director*1 HASHIMOTO Katsumi

    View Full Profile

    Career Profile

    Apr. 1981
    Joined the Osaka Regional Taxation Bureau
    Oct. 1984
    Joined Asahi & Co. (currently KPMG AZSA LLC)
    Mar. 1987
    Registered as a Certified Public Accountant
    May 2007
    Representative Partner of Asahi & Co. (currently KPMG AZSA LLC)
    Jul. 2010
    Director of Kyoto Office, KPMG AZSA LLC
    Jun. 2019
    Left position at KPMG AZSA LLC
    Jul. 2019
    Established Hashimoto Accounting Office as a Representative (current)
    Jun. 2020
    Outside Audit & Supervisory Board Member of the Company
    Jun. 2022
    Outside Director of the Company (current)

  • Director*1 NAKANO Hideyo

    View Full Profile

    Career Profile

    Nov. 1991
    Vice President of Cititrust and Banking Corporation
    Oct. 1993
    Senior Portfolio Manager and Head of Private Investment of Cititrust and Banking Corporation
    Jan. 2000
    Director and Head of Investment Division of FuNNeX Asset Management Inc.
    Mar. 2004
    Established Trias Corporation; took up position as CEO (current)
    Mar. 2020
    External Director of OUTSOURCING Inc.
    Jun. 2021
    External Director of HOCHIKI CORPORATION (current)
    Jun. 2022
    Outside Director of the Company (current)
    Jun. 2023
    External Director (Audit & Supervisory Committee Member) of NS TOOL CO., LTD. (current)

  • Audit & Supervisory Board Member (full-time) FURUSAWA Yoshiyuki

    View Full Profile

    Career Profile

    Apr. 1993
    Joined the Company
    Apr. 2010
    General Manager of Internal Audit Department
    Apr. 2013
    General Manager of Financial Division, Financial Headquarters
    Apr. 2015
    General Manager of Secretarial Department
    Apr. 2020
    General Manager of Financial Administration Department, Administrative Headquarters
    Apr. 2021
    General Manager of Life Sciences Business Headquarters
    Apr. 2022
    General Manager of Internal Audit Department
    Apr. 2024
    Senior Specialist of Internal Audit Department
    Jun. 2024
    Full-time Audit & Supervisory Board Member (current)

  • Audit & Supervisory Board Member (full-time) HASHIMOTO Masayuki

    View Full Profile

    Career Profile

    Apr. 1993
    Joined the Company
    Oct. 2010
    General Manager of Functional Chemicals R&D Department, Functional Chemicals Business Division
    Apr. 2013
    General Manager of Management Planning Office, Corporate Planning Headquarters
    Apr. 2014
    Executive General Manager Deputy Executive General Manager of R&D Headquarters
    Apr. 2017
    Associate Director
    Apr. 2019
    Executive General Manager of Functional Chemicals Business Division, Business Headquarters
    Apr. 2020
    Executive General Manager President CEO of Yokkaichi Chemical Company Limited
    Apr. 2021
    Senior Executive General Manager of R&D Headquarters
    Apr. 2024
    Senior Executive General Manager
    Apr. 2025
    Senior Specialist of President’s Office
    Jun. 2025
    Full-time Audit & Supervisory Board Member (current)

  • Audit & Supervisory Board Member*2 TAKAHASHI Toshitada

    View Full Profile

    Career Profile

    Apr. 1982
    Joined The Fuji Bank, Limited (currently Mizuho Bank, Ltd.)
    May 2004
    Manager of Urawa Branch of Mizuho Bank, Ltd.
    Nov. 2005
    Manager of Maebashi Branch of Mizuho Bank, Ltd.
    Apr. 2008
    Manager of Shinagawa Branch of Mizuho Bank, Ltd.
    Apr. 2010
    Chief Auditor, Business Audit Department of Mizuho Bank, Ltd.
    Jan. 2011
    Joined UC CARD Co., Ltd.
    Feb. 2011
    Managing Executive Officer of UC CARD Co. Ltd.
    Apr. 2020
    Director, Managing Executive Officer of UC CARD Co. Ltd.
    Jun. 2020
    Independent Outside Director Standing Audit and Supervisory Committee Member of ITmedia Inc. (current)
    Jun. 2020
    Outside Audit & Supervisory Board Member of the Company (current)

  • Audit & Supervisory Board Member*2 MIYANAGA Masayoshi

    View Full Profile

    Career Profile

    Apr. 1981
    Joined The Nippon Credit Bank, Ltd. (currently Aozora Bank, Ltd.)
    Feb. 1990
    Temporarily served as an Investment Advisor of The Nippon Credit Bank, Ltd.
    Oct. 1991
    Dispatched to Nippon Credit Gartmore Ltd. (UK)
    Apr. 1995
    Joined Schroder Investment Management (Japan) Limited
    Apr. 2000
    Director of Schroder Investment Management (Japan) Limited
    Jan. 2001
    Joined Prudential Asset Management Japan Co., Ltd. (currently PGIM Japan Co., Ltd.)
    Chief Investment Officer in charge of Stock Investment
    Nov. 2003
    Joined IRB, Inc. (currently FALCON Research & Consulting Ltd.)
    Co-Representative Partner
    Nov. 2011
    Representative Director of IRB Inc.
    Apr. 2017
    Director of FALCON Research & Consulting Ltd. (current)
    Apr. 2017
    Professor of Graduate School of Innovation Studies (currently Graduate School of Management) of Tokyo University of Science
    Jun. 2017
    Outside Director of Universal Entertainment Corporation 
    Apr. 2023
    Specially Appointed Professor of Chuo Business School (current)
    Jun. 2023
    Outside Director of S.T. CORPORATION (current)
    Jun. 2024
    Outside Audit & Supervisory Board Member of the Company (current)
    Nov. 2025
    Cypress Holdings Co., Ltd. Outside Director (current)
  • Outside / Independent Director
  • Outside / Independent Audit & Supervisory Board Member

Click here to view the skills matrix for each Director and Auditor

Skills matrix

Related Links