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Management Policy

Kensuke Koshiyama

Last updated : June 18, 2026

Kensuke Koshiyama Member of the Board
Full-time Audit and Supervisory Committee Member Kensuke Koshiyama (Date of Birth : June 17, 1960)

  • Outside
  • 　
  • Independent
April 1984 Joined Board of Audit of Japan
December 2016 Senior ASG of Secretariat of Board of Audit of Japan
April 2017 Director-General of 2nd Bureau of Board of Audit of Japan
April 2018 Deputy Secretary-General of Board of Audit of Japan
December 2018 Secretary-General of Board of Audit of Japan
June 2022 Full-Time Audit & Supervisory Board Member of Nippon Telegraph and Telephone Corporation
(currently NTT, Inc.)
June 2025 Member of the Board, Full-time Audit and Supervisory Committee Member of the Company
(current position)

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