Representative director

Chairman and CEO

SEKIGUCHI Akira

Apr.

1983

Joined the Company

Oct.

2006

Director of Dowa Metals & Mining Co., Ltd.

Apr.

2011

President and Representative Director of Kosaka Smelting & Refining Co., Ltd.

Apr.

2013

Executive Officer

President and Representative Director of Dowa Metals & Mining Co., Ltd.

Apr.

2018

Chairman of Japan Mining Industry Association (until Mar. 2019)

Jun.

2018

President and Representative Director

Apr.

2024

Chairman of Japan Mining Industry Association (until Mar. 2025)

Jun.

2025

Representative Director, President and Executive Officer, CEO

Jun.

2026

Representative Director, Chariman and CEO (current position)

Date of Birth

October 18, 1960

Number of years in
office as a director

9 years

Number of Company’s
Shares Held

10,444 shares