Audit & Supervisory Board Members

As of June 17, 2026

Kazuhiko Masuda

Kazuhiko Masuda
Full-time Audit & Supervisory Board Member
[Date of Birth]
November 25, 1963
Jun. 2026

Full-time Audit & Supervisory Board Member (Current position)

Apr. 2026

Full-time Adviser

Jan. 2026

Corporate Management Division, Corporate Sector

Apr. 2025

Deputy Executive Director, Personal Business Sector

Apr. 2024

Managing Executive Officer

Apr. 2022

Executive Officer, seconded to KDDI Summit Global Myanmar Co., Ltd. (CEO)

Apr. 2019

General Manager, Global Consumer Business Division

Apr. 2017

Managing Executive Officer, General Manager of Engineering Division of Jupiter Telecommunications Co., Ltd. (Currently JCOM Co., Ltd.)

Apr. 2015

Administrative Officer

Apr. 1987

Joined DDI CORPORATION (Currently KDDI CORPORATION)

Kazuyasu Yamashita

Kazuyasu Yamashita
Full-time Audit & Supervisory Board Member
[Date of Birth]
February 12, 1965
Jun. 2024

Full-time Audit & Supervisory Board Member (Current position)

Jan. 2024

With headquarters, Corporate Management Division, Corporate Sector

Apr. 2023

General Manager, Sustainability Management Division, Corporate Sector

Apr. 2022

Deputy General Manager, Sustainability Management Division, Corporate Sector

Apr. 2018

General Manager, Global Corporate Management Department, Global Business Planning Division

Apr. 2010

General Manager, Intellectual Property Office, Network Technology Division

Kenichi Ogasawara

Kenichi Ogasawara
Full-time Audit & Supervisory Board Member, Independent Director
[Date of Birth]
May 8, 1966
Jun. 2026

Full-time Audit & Supervisory Board Member (Current position)

Jul. 2024

Deputy Director-General of Overseas Projects, Minister's Secretariat of Ministry of Land, Infrastructure, Transport and Tourism (MLIT)

Jul. 2023

Deputy Director-General, Water Management and Land Conservation Bureau of MLIT

Apr. 2021

Director of Japan Housing Finance Agency

Jun. 2020

Director of Overseas Project Promotion, Policy Bureau of MLIT

Jul. 2018

Director of Construction Market Division, Land and Construction Industry Bureau of MLIT

Apr. 2017

Minister's Secretariat and Counsellor for Accounting of MLIT

Apr. 2014

Deputy Mayor of Kyoto City

Apr. 2012

Chief of City Planning Bureau of Kyoto City

Jul. 2007

Director for Water Administration Policy Planning of River Bureau of MLIT

Jul. 2005

Senior Deputy Director of Minister's Secretariat Budget and Accounts Division of MLIT

Apr. 1991

Joined Ministry of Construction (Currently MLIT)

Kazutoshi Kogure

Kazutoshi Kogure
Outside Audit & Supervisory Board Member, Independent Director
[Date of Birth]
January 17, 1959
Jun. 2024

Outside Audit & Supervisory Board Member (Current position)

Dec. 2023

Audit Committee Member, Sumida Ward, Tokyo (Current position)

Oct. 2022

Established Kazutoshi Kogure CPA Office (Representative) (Current position)

Jul. 2022

Senior Advisor of The Japanese Institute of Certified Public Accountants

Jul. 2019

Deputy President of The Japanese Institute of Certified Public Accountants

Jul. 2013

Executive Board Member of The Japanese Institute of Certified Public Accountants

Jun. 1996

Partner of Tohmatsu & Co. (Currently Deloitte Touche Tohmatsu LLC)

Apr. 1985

Registered as a Certified Public Accountant

Mar. 1982

Joined Tohmatsu Aoki & Co. (Currently Deloitte Touche Tohmatsu LLC)

Koji Arima

Koji Arima
Outside Audit & Supervisory Board Member, Independent Director
[Date of Birth]
February 23, 1958
Jun. 2025

Chairman, Director of DENSO CORPORATION (Current position)

Mar. 2025

Outside Director of AGC Inc. (Current position)

Jun. 2024

Outside Audit & Supervisory Board Member (Current position)

Jun. 2023

Representative Member of the board, Chairman of DENSO CORPORATION

May. 2022

Chairman of Japan Auto Parts Industries Association

Jun. 2015

Representative Member of the board, President of DENSO CORPORATION

Jun. 2014

Senior Executive Director of DENSO CORPORATION

Jun. 2008

Executive Director of DENSO CORPORATION