Notice of Status of Buyback of Treasury Shares

For Immediate Release

Company name Okabe Co., Ltd.

June 1, 2026

Representative Hirohide Kawase, Representative Director,

President and Chief Executive Officer (Securities Code: 5959, TSE Prime Market)

Contact Hisanori Ekawa, Director, Managing Executive Officer and Head of Administrative Division (TEL. +81-3-3624-5119)

Okabe Co., Ltd. (the "Company") announces that it implemented the buyback of treasury shares based on the provisions of the Articles of Incorporation in accordance with Article 459, Paragraph 1 of the Companies Act. Details are as follows.

1. Type of shares bought back : Common shares of the Company

2. Total number of shares bought back : 381,500 shares

3. Total value of shares bought back : 346,099,500 yen

4. Period of buyback : From May 1, 2026 to May 31, 2026 (on a contract execution date basis)

5. Method of buyback : Purchase at the Tokyo Stock Exchange

(Discretionary investment through a securities company)

(Ref.)

1. Details of the Board of Directors' meeting held on February 13, 2026.

   1. Class of stock to be purchased : Common stock of the Company

   2. Total number of stock to be acquired : 1,700,000 shares (maximum) (3.71% of the total number of outstanding shares (excluding treasury stock))

   3. Total acquisition amount : 1,500 million yen (maximum)

   4. Acquisition period : From February 16, 2026 to July 24, 2026

   5. Acquisition method : Purchase at the Tokyo Stock Exchange

      (Discretionary investment through a securities company)

2. Cumulative total of treasury shares bought back according to the abovementioned resolution at the meeting of the Board of Directors (as of May 31, 2026)

   1. Total number of shares bought back : 1,386,500 shares

   2. Total value of shares bought back : 1,344,839,300 yen