Sakai Chemical Industry Co., Ltd.TSE: 4078

Notice Concerning Repurchase of Own Shares Through Off-Auction Own Share Repurchase Trading System (ToSTNeT-3)

· Issued by Sakai Chemical Industry Co., Ltd.


June 19,2025

For Immediate Release

Company name:

Sakai Chemical Industry Co., Ltd.

Representative:

President and Representative Director,

Toshiyuki Yagura

(TSE Prime Market, Stock code:4078)

Inquiries:

Director, General Manager of Accounting & Finance Department

Hiroyuki Hattori

Telephone:

+81-72-223-4111

Notice Concerning Repurchase of Own Shares Through Off-Auction Own Share Repurchase Trading System (ToSTNeT-3)

The Board of Directors of Sakai Chemical Industry Co., Ltd. (the "Company") , at its meeting held on May 14, 2025, resolved that the Company will acquire its own shares pursuant to the provisions of Article 459, paragraph (1) of the Companies Act and the provisions of Article 42 of the

Company's Articles of Incorporation.. The Company determined the specific method of the acquisition for a part of it as follows.

  1. Method of acquisition

    At 8:45 a.m. on June 20, 2025, a consigned purchase order will be placed with the Tokyo Stock Exchange off-auction own share repurchase trading system (ToSTNeT-3) at the closing price of

    ¥2,644 (including final special quote) for today, June 19, 2025 (no changes to other transaction systems or transaction times will be made).The purchase order will apply only to the specified transaction time.

  2. Details of matters related to acquisition

    (1)

    Class of shares to be acquired

    Common shares

    (2)

    Total number of shares to be acquired

    Up to 500,000 shares

    (3)

    Announcement of results of acquisition

    The results of the acquisition will be announced

    after completion of the transaction at 8:45 a.m. on June 20, 2025

    Note 1: No change will be made to the number of shares specified above. Note, however, that part or all of the acquisition may not be carried out depending on market trends and other factors.

    Note 2: The purchase will be made on the basis of sell orders corresponding to the number of shares scheduled to be acquired.

  3. Other

After the completion of the acquisition of own shares through Off-Auction Own Share Repurchase Trading System (ToSTNeT-3), Market purchases will be made through the auction market on the Tokyo Stock Exchange based on discretionary trading contract regarding acquisition of own shares, up to the total number of shares to be repurchased and the total amount of the repurchase price

resolved at a meeting of the Board of Directors held on May 14, 2025, less the total number of shares purchased through the Off-Auction Own Share Repurchase Trading System (ToSTNeT-3).

(Reference)

  1. Matters resolved at the Board of Directors meeting on May 14,2025.

    (1)

    Class of shares to be acquired

    Common shares

    (2)

    Total number of shares to be acquired

    Up to 1,000,000 shares

    (6.17% of total number of issued shares (excluding treasury shares))

    (3)

    Total amount of share

    acquisition costs

    Up to 2,500,000,000 yen

    (4)

    Acquisition period

    From May 15, 2025 to November 30, 2025 (on a contract basis)

    (5)

    Method of acquisition

    ① Market purchases through the Tokyo Stock Exchange

    ② Market purchases through Off-Auction Own Share Repurchase Trading System

    (ToSTNet-3)

  2. Total own shares acquired in accordance with the resolution at the Board of Directors meeting on May 14, 2025 (as of June 19, 2025)

(1)

Total number of shares

acquired

0 shares

(2)

Total amount of share

acquisition costs

0 yen

※Following the completion of this acquisition, the Company plans to cancel all the treasury shares to be acquired.

Note : This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail.