Notice of change in Audit & Supervisory Board Member

To Whom It May Concern,

Name of company: Nippon Kayaku Co., Ltd.

April 22, 2026

Name of representative: Shigeyuki Kawamura, President Code No.: 4272

Tokyo Stock Exchange, Prime Market

Contact: Masako Aono

Senior Director, General Manager of Corporate Communications Division (Tel: +81-3-6731-5237)

At the Board of Directors meeting held on April 21, 2026, the Company resolved to change Audit & Supervisory Board Member as follows. This matter is scheduled to be officially decided by the Board of Directors following the approval of the 169th Ordinary General Meeting of Shareholders to be held on June 25, 2026.

1. Change in Audit & Supervisory Board Member

   1. Candidates of New Audit & Supervisory Board Member

      Name	New Position	Current Position
      Yoko Shimizu	Outside Audit & Supervisory Board Member	Head of Compliance, BNP PARIBAS ASSET MANAGEMENT Japan Ltd.

   2. Retiring Audit & Supervisory Board Member Ichiro Wakasa

   3. Schedule for Changes: June 25, 2026