News Release
September 2, 2024
Proterial, Ltd.

Notification of Personnel Changes in Executive Officers
Proterial, Ltd. (hereinafter, “Proterial”) announces the following decisions concerning executive
personnel to be effective as of October 1, 2024.
1. Executive Personnel(1) Newly Appointed Executive Officer (As of October 1, 2024)
Title and ResponsibilityName(As of October 1, 2024)
Yuko NakahiraManaging Executive Officer,
General Manager, Specialty Steel Business Unit

*Brief background descriptions:・Careers:
September 2024
April 2022
December 2019
November 2016
May 2015
November 2009
April 2008
September 1998
April 1988
・Educations:
1998
1988

Special Adviser, Proterial, Ltd. (incumbent)
Executive Vice President, CFO, Mitsubishi Chemical Group Corp.
Vice President, Asia Consumer Business, 3M Company
Managing Director, 3M Singapore
Managing Executive Officer, 3M Japan, Ltd.
Managing Director, Medical Devices Dept., Sumitomo 3M, Ltd.
General Manager, Business Planning Dept., Sumitomo 3M, Ltd.
McKinsey & Company
Joined Sumitomo 3M, Ltd.
Johnson Graduate School of Management, M.B.A., Cornell University
Faculty of Engineering, B.S., Chemistry, University of Tokyo(2) Change of Responsibility (As of October 1, 2024)
Title and ResponsibilityName(As of October 1, 2024)
Motohide Mohri

Title and Responsibility(As of September 2, 2024)

Executive Officer, CCO, SS
Executive Officer, General Manager,(Chief Commercial Officer for Specialty Steel) Specialty Steel Business Unit

2. Purpose of the Personnel Changes
Accelerating the global growth of the specialty steel business, Proterial will appoint an external person with a wealth ofmanagement experience in a global environment as the General Manager of this business and establish a CCO (ChiefCommercial Officer) under the General Manager of the Specialty Steel Business Unit to strengthen marketing, sales,
product development, and customer service.

Proterial, Ltd.
Toyosu Prime Square, 5-6-36 Toyosu, Koto-ku, Tokyo 135-0061, Japanwww.proterial.com/e/1/3

3. Executive Officers (As of October 1, 2024)* Listed in Japanese phonetic order by last name for each position.
NameTitle and Responsibility
Sean M. Stack
Kazuya Murakami

Representative Director, Chairman, President, & CEO
Representative Director, Executive Vice President

Tony I. Cha

Managing Executive Officer, CFO
General Manager, Finance Division

Yutaka Nakashima

Managing Executive Officer, CHRO

Yuko Nakahira
Hisaki Masuda
Ryoichi Aita
Randy Ahuja
Yoshihiro Ammo
Katsura Ishikawa
Hiroaki Inuyama
Toru Taniguchi
Natsuki Tokubuchi
Kenji Minegishi
Hajime Murakami

Managing Executive Officer,
General Manager, Specialty Steel Business UnitManaging Executive Officer, CSPO
General Manager, Strategy Planning Division
Executive Officer, CQO
General Manager, Corporate Quality Assurance Division
Executive Officer, Proterial, Ltd.;
Director & Co-President, Proterial America, Ltd.; Chairperson, Proterial Europe GmbH
Executive Officer, CIO, & CDO
Executive Officer,
General Manager, Marketing & Sales Division
Executive Officer, GC, CLO, & CRCO
General Manager, Legal Division
Executive Officer,
General Manager, Manufacturing & Engineering Division
Executive Officer, CTrO
Executive Officer,
General Manager, Magnetic Materials Business Unit
Executive Officer, CTO
General Manager, R&D Division;
General Manager, Global Research & Innovative Technology Center

Motohide Mohri

Executive Officer, CCO, SSToru Yamamoto

Executive Officer,
Chairperson & President, Proterial (China), Ltd.

CEO: Chief Executive Officer
CFO: Chief Financial Officer
CHRO: Chief Human Resources Officer
CSPO: Chief Strategy & Planning Officer
CQO: Chief Quality Officer
CIO: Chief Information Officer
CDO: Chief Digital Officer
Proterial, Ltd.
Toyosu Prime Square, 5-6-36 Toyosu, Koto-ku, Tokyo 135-0061, Japanwww.proterial.com/e/2/3

GC: General Counsel
CLO: Chief Legal Officer
CRCO: Chief Risk Control Officer
CTrO: Chief Transformation Officer
CTO: Chief Technology Officer
CCO: Chief Commercial Officer

■ About PROTERIAL“Proterial” reflects the essence of our corporate philosophy, which consists of three elements: Mission: “Makethe best quality available to everyone;” Vision: “Leading sustainability by high performance;” and Values:“Unfaltering integrity” and “United by respect.” It combines “pro-” with the word “material.”“Pro-” represents our “three pros”:
・ Professional — work that exceeds expectations
・ Progressive — a spirit that keeps challenging
・ Proactive — an enterprising attitude“Material” refers to the high-performance materials that our original technologies produce and underpinned by
the three pros. With our focus on solving customer issues and bringing new levels of value, we promise tocontribute to the realization of a sustainable society through the products and services that embody ourphilosophy.
■ Proterial, Ltd. — Company Overview
Established: April 1956
Head office: Toyosu Prime Square, 5-6-36 Toyosu, Koto-ku, Tokyo 135-0061, Japan
Capital: 310 million yen (as of March 31, 2024)
Representative: Sean M. Stack
Representative Director, Chairman, President, and Chief Executive Officer (CEO)Sales revenue: 1,033.2 billion yen (Term ended March 2024)
History:
1910: Founded as Tobata Foundry Co.
1937: Merged with Hitachi, Ltd.
1956: Established separately as Hitachi Metals Industries, Ltd.
2023: Company separated from the Hitachi Group, and renamed
from Hitachi Metals, Ltd. to Proterial, Ltd.

Proterial, Ltd.
Toyosu Prime Square, 5-6-36 Toyosu, Koto-ku, Tokyo 135-0061, Japanwww.proterial.com/e/3/3