(As of April 1, 2024)

YAMADA Masao

Career

Chairman and 
representative director    

President and 
representative director

TOBITA Minoru

Career

Director

Responsible for Quality assurance and Environment & safety

SUGAWARA Akira

Career

Director

Responsible for Technologies, Business innovation research and Intellectual property sec.

KATAGIRI Atsushi

Career

Director

General manager of Human resources dept.
Responsible for General affairs and legal

HOSONO Hiroyuki

Career

Director

General manager of Corporate strategy dept. and Public relations & investor relations sec.
Responsible for Accounting and Finance

KOIZUMI Yoshiko*

Career

Outside director

Attorney
Partner of City-Yuwa Partners

SATO Kimio*

Career

Outside director

Honorary Senior Corporate Adviser of
Nittetsu Mining Co., Ltd.

SHIBAYAMA Atsushi*

Career

Outside director

Professor, Akita University Faculty of
International Resource Sciences
Professor, Akita University Graduate School of International Resource Sciences

* Independent Officer

Title

Name

Commissioned as

Corporate auditor (full-time)

KINOSHITA Hiroshi

Corporate auditor (full-time)

FUKUZAWA Hajime

Corporate auditor (part-time)

OBA Koichiro

Corporate auditor (part-time)

KOMURO Shingo

Executive officer

YANAI Yasuharu

President and representative director,

DOWA ECO-SYSTEM CO., LTD.

Executive officer

FUKUDA Kensaku

President and representative director,

DOWA METALS & MINING CO., LTD.

Executive officer

SUZUKI Takehiko

President and representative director,

DOWA ELECTRONICS MATERIALS CO., LTD.

Executive officer

ONIOH Takashi

President and representative director,

DOWA METALTECH CO., LTD.

Executive officer

KAGAWA Koki

President and representative director,

DOWA THERMOTECH CO., LTD.

Executive officer

INOMATA Hirotoshi

President and representative director,

DOWA TECHNOLOGY CO., LTD.

Executive officer

WAKABAYASHI Eiichi

President and representative director,

DOWA MANAGEMENT SERVICES CO., LTD.