About Us

Directors & Officers

Directors

Representative Director
Chairman & CEO
Hiroshi Shimizu
Representative Director
President & COO
Kazuaki Tokiwa
Representative Director
Senior Managing Executive Officer
Masamitsu Sumiyoshi General Manager of Sales & Marketing Division
Director
Managing Executive Officer
Junji Irie General Manager of Administrative Division
Director
Senior Executive Officer
Gakuyuki Kajiyama General Manager of Corporate Planning Division
Director
Full-time Audit & Supervisory Committee Member
Masato Koizumi
Director
Audit & Supervisory Committee Member
Takayuki Hayakawa *1
Director
Audit & Supervisory Committee Member
Shigeharu Nakamura *1
Director
Audit & Supervisory Committee Member
Kazuma Shibata *1

Executive Officers

Senior Executive Officer Hirofumi Otani General Manager of Technical Division
& IT&Electronics Business Unit
Senior Executive Officer Michihisa Tasaka General Manager of Quality Assurance Division
Senior Executive Officer Takashi Shimada President, RIKEN AMERICAS CORPORATION
& RIKEN ELASTOMERS CORPORATION
Executive Officer Shunichi Ueyama Managing Director, RIKEN (THAILAND) CO., LTD.
Executive Officer Hitoshi Sugino Deputy General Manager of Technical Division
& General Manager R&D Center
Executive Officer Takeshi Sugie General Manager of Procurement Division
Executive Officer Masashi Tosaka General Manager of Film Planning & Coordination Department
& Construction Products Materials Business Unit
Executive Officer Toshiyuki Sato President Director, PT.RIKEN INDONESIA
Executive Officer Hirohito Koshimizu General Manager of Manufacturing Division

*1 Indicates an outside director as provided for in Article 2-15 of the Companies Act.
Designated for Independent Director as specified by the Tokyo Stock Exchange in Japan.