Notice Concerning Decision on Matters Relating to Acquisition of Own Shares

May 14, 2026

Company name: Kajima Corporation Representative: Yoshikazu Oshimi

Chairman and President, Representative Director Securities code: 1812

(Tokyo Prime, Nagoya Premier)

Inquiries: Sachihiko Mikami

General Manager of Finance Department, Treasury Division

Tel.+81-(0)3-5544-1111

(Acquisition of Own Shares in accordance with Articles of Incorporation pursuant to Article 165, Paragraph 2 of the Companies Act)

Kajima Corporation, at the Board of Directors' Meeting held today, resolved matters related to acquisition of its own shares in accordance with Article 156 of the Companies Act, applicable pursuant to Article 165, Paragraph 3 of the said Act. We hereby inform you of the following.

1. Reason for acquiring own shares To improve capital efficiency and expand

   shareholder returns

2. Details relating to the acquisition

   1. Type of shares to be acquired: Common Stock of Kajima Corporation

   2. Aggregate number of shares to be acquired: 9,000,000 shares (upper limit)

      (The ratio to the aggregate number of issued shares (excluding own shares): 1.9%)

   3. Aggregate acquisition price of shares: 40,000,000,000 Japanese yen (upper limit)

   4. Acquisition period: May 15, 2026 to September 30, 2026

   5. Acquisition method: Market purchases on the Tokyo Stock Exchange

Following the completion of the above acquisition of own shares, Kajima Corporation plans to cancel a portion of its own shares so that its holdings will be approximately 5% of the total number of issued shares (including own shares).

We will announce the number of shares to be cancelled and the date of the cancellation once they are determined.

• Aggregate number of issued shares excluding own shares: 467,806,574 shares

• Number of own shares: 60,849,437 shares