Resolution Regarding Share Repurchase

Date: March 30, 2026

Listed company name: Nitto Denko Corporation Stock exchange listing: Tokyo, Prime Market Code number: 6988

Company representative: Hideo Takasaki, President Contact person: Yasuhiro Iseyama

Senior Executive Vice President

Director of Corporate Accounting & Finance Division Phone: +81-6-7632-2101

(Share repurchase under the provisions of the Articles of Incorporation pursuant to Article 165, Paragraph 2 of the Companies Act of Japan)

Nitto Denko Corporation ("the Company") resolved at a meeting of its Board of Directors on March 30, 2026 the repurchase of its own shares pursuant to Article 156 of the Companies Act of Japan as applied pursuant to Article 165, Paragraph 3.

1. Purpose of the Share Repurchase

   To enable an execution of agile capital management policy following changes in the business environment as a part of the return to shareholders.

2. Details of the Share Repurchase

   1. Class of shares to be repurchased: Common stock

   2. Total number of repurchasable shares: 20,000,000 shares (maximum) (2.97% of the total number of issued shares [excluding treasury shares])

   3. Total repurchase amount: JPY 50,000,000,000 (maximum)

   4. Repurchase period: From April 8, 2026 to August 31, 2026

【Reference】

Treasury shares as of February 28, 2026

Total number of issued shares (excluding treasury shares) 673,659,750 shares Number of treasury shares 4,999,950 shares