Director

Executive officer CRO

YOSHIDA Hiroshi

Feb.

2002

Joined the Company

Jul.

2009

General Manager of West Manufacturing Technologies Center, Dowa Technology Co., Ltd.

Feb.

2010

General Manager of Strategic Planning Dept., Dowa Technology Co., Ltd.

Apr.

2016

Director of Kosaka Smelting & Refining Co., Ltd.

Apr.

2016

General Manager of North Manufacturing Technologies Center, Dowa Technology Co., Ltd.

Apr.

2018

Director and General Manager of Manufacturing Technologies Dept., Kosaka Smelting & Refining Co., Ltd.

Apr.

2018

President and Representative Director of Akita Engineering Co., Ltd.

Apr.

2021

Director and General Manager of Manufacturing Technologies Dept., Kosaka Smelting & Refining Co., Ltd.

Apr.

2026

Executive Officer, Deputy responsible officer for Quality Assurance Dept. and Environment & Safety Dept.

Jun.

2026

Director, Executive officer CRO, responsible for Quality Assurance Dept. and

Environment & Safety Dept. (current position),

Director of Dowa Eco-System Co., Ltd. (current position),

Director of Dowa Thermotech Co., Ltd. (current position)

Date of Birth

February 13, 1967

Number of years in
office as a director

1 year

Number of Company’s
Shares Held

2,054 shares