Gsi Creos CorporationTSE: 8101

Notice Regarding the Status of Acquisition of Treasury Stock

· Issued by GSI Creos Corporation

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.



To whom it may concern:

March 2, 2026

Company Name: GSI Creos Corporation Representative: Tadaaki Yoshinaga Representative Director, President and CEO

(Code: 8101, The Prime Market of Tokyo Stock Exchange)

Inquiries: Toyoshi Adachi

Executive Officer, General Manager, Corporate Planning Dept.

(+81-3-5418-2122)

Notice Regarding the Status of Acquisition of Treasury Stock (Acquisition of the Treasury stock pursuant to the Articles of Incorporation of the Company in accordance with Article 45G, Paragraph (1) of the Companies Act)

GSI Creos Corporation (the "Company") announces the status of acquisition of treasury stock pursuant to the Articles of Incorporation of the Company in accordance with Article 459, Paragraph (1) of the Companies Act as follows.

(Particulars)

1. Class of shares acquired:

Common stock of the Company

2. Total number of shares acquired:

900 shares

3. Total amount of shares acquired:

2,428,600 yen

4. Period of acquisition:

From February 10, 2026 to February 28, 2026 (trade date basis)

5.Method of acquisition:

Purchases through the trading on the auction market of the Tokyo

Stock Exchange, Inc.

(Reference)

  1. Details of the resolution at the meeting of the Board of Directors held on February 9, 2026

    (1) Class of shares to be acquired:

    Common stock of the Company

    (2) Total number of shares to be acquired:

    300,000 shares (maximum)

    (The ratio of the total number of shares to be acquired to the total number of shares issued

    (excluding treasury stock): 2.44%)

    (3) Total amount of shares to be acquired:

    700,000,000 yen (maximum)

    (4) Acquisition period:

    From February 10, 2026, to October 31, 2026

    (5) Method of acquisition:

    Purchases through the trading on the auction market of

    the Tokyo Stock Exchange, Inc. (including through ToSTNeT-3)

  2. Cumulative number of shares acquired based on the above resolution at the Board of Directors Meeting (as of February 28, 2026)

(1) Total number of shares acquired:

900 shares

(2) Total purchase price of shares acquired:

2,428,600 yen

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