Notice Regarding Results and Completion of Repurchase of Own Shares

‌To whom it may concern

February 4, 2026 Company name: Nissan Chemical Corporation Representative: YAGI Shinsuke, President (Code number: 4021, TSE Prime Market)

This is to notify that Nissan Chemical Corporation purchased its shares in the market under Article 156 of the Companies Act, as applied pursuant to Article 165, Paragraph 3 of the same Act. And the Company has completed the acquisition resolved at the Board of Directors' meeting held on May 15, 2025.

1. Class of shares purchased: Common shares

2. Total number of shares purchased: 26,400 shares

3. Total purchase cost: 144,162,500 yen

4. Purchase period (Contract basis): From Feb 1, 2026 to Feb 3, 2026

5. Method of purchase: Purchased on the Tokyo Stock Exchange

Reference

1. Details of the resolution at the Board of Directors' meeting on May 15, 2025

   1. Class of shares: Common shares of the company

   2. Total number of shares: Up to 2,500,000 shares

      (1.84% of total shares outstanding, excluding treasury shares)

   3. Total amount: Up to 9,000,000,000 yen

   4. Period of repurchase: From May 16, 2025 to March 31, 2026

2. Total number of shares purchased and total purchase amount (as of Feb 3, 2026)

   1. Total number of shares purchased: 1,815,100 shares

   2. Total purchase amount: 8,999,863,200 yen