Notice Regarding Changes in Representative Directors and Directors

[Translation]

To whom it may concern

February 26, 2026 Company name: Sankyu INC.

Representative: Kimihiro Nakamura, President and CEO (Representative Director)

Securities code: 9065; TSE Prime and FSE Contact: Masahiro Ogawa, General Manager, Secretariat Department

Phone: +81-3-3536-3900

Sankyu Inc. (the "Company") hereby announces that it has decided or unofficially decided, at a meeting of the Board of Directors held today, about the changes in Representative Directors and Directors as follows.

1. Reason for Changes

   To implement changes in representative authority and Directors accompanying the management personnel changes effective April 1, 2026 and thereafter.

2. Details of Changes

   1. Decisions

      Name	Current title	New title
      Katsuaki Morofuji	Senior Executive Director (Representative Director), CFO, in charge of Administration and ESG	Representative Director, Special assignments, Director to CEO
      Nobuyuki Aoki	Senior Executive Director (Representative Director), COO, in charge of Areas, Supervisor of Areas, and Supervisor of Safety	Representative Director, Special assignments, Director to CEO
      Tsuyoshi Kukihara	Senior Executive Director (Director), CSO, in charge of Business	Senior Managing Executive Officer (Director), CSO, in charge of Business, and CTO, Head of Technical Development & Administration Division

      Scheduled effective date: April 1, 2026

      (Note) Katsuaki Morofuji and Nobuyuki Aoki are scheduled to retire as Representative Directors upon the expiration of their terms at the conclusion of the 117th Annual General Meeting of Shareholders (scheduled for late June 2026).

   2. Unofficial decisions

      Name	Current title	New title
      Kenji Ohnaka	Managing Executive Officer, Head of Engineering Business Division	Senior Managing Executive Officer (Representative Director), COO, in charge of Areas, Supervisor of Areas, and Supervisor of Safety
      Tomomi Iguchi	Executive Officer, Head of Kyushu Area	Senior Managing Executive Officer (Representative Director), CHRO, in charge of Administration and ESG

      Scheduled effective date: late June 2026

      (Note) These changes are scheduled to be formally decided at a meeting of the Board of Directors following the conclusion of the 117th Annual General Meeting of Shareholders (scheduled for late June 2026).

3. Past Experience of Newly Appointed Representative Director Candidates

(Note) The number of shares of the Company held is as of February 26, 2026.