Directors

HOSONO Hiroyuki

Jul.

1991

Joined the Company

Jun.

2008

Director of DOWA-Olin Metal Corporation

Apr.

2012

President and Representative Director of DOWA-Olin Metal Corporation

Apr.

2016

Director and General Manager of Management & Strategic Planning Dept., Dowa Metaltech Co., Ltd.

Apr.

2018

General Manager of Strategic Planning Dept. and Public Relations Dept.,

Director of DOWA Electronics Materials Co., Ltd. (current position)

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

Apr.

2021

Executive Officer and General Manager of Corporate Strategy Dept., Sustainability Sec. and Public Relations & Investor Relations Sec.

Jun.

2022

Director,

General Manager of Corporate Strategy Dept., Sustainability Section, and Public Relations & Investor Relations Section,

responsible for Accounting and Finance

Apr.

2023

Director,

General Manager of Corporate Strategy Dept. and Public Relations & Investor Relations Section,

responsible for Accounting and Finance (current position)

Date of Birth

December 21, 1962

Number of years in
office as a director

3 years

Number of Company’s
Shares Held

3,464 shares