Notice Regarding the Status of Treasury Stock Acquisition (Acquisition of Treasury Stock Based on the Provisions of Article 165, Paragraph 2 of the Companies Act)

Overview of Capital Policy

Construction Technology Research Institute Co., Ltd. has been conducting treasury stock acquisitions in accordance with the resolution of the Board of Directors dated November 12, 2025, pursuant to the provisions of Article 165, Paragraph 3 of the Companies Act. During the period from January 1 to January 31, 2026, the company acquired 112,500 shares of treasury stock through market purchases on the Tokyo Stock Exchange, with a total acquisition cost of 338,397,992 yen. As a result, the cumulative number of shares acquired stands at 325,800, with a total acquisition cost of 974,392,286 yen. The maximum acquisition limit is 700,000 shares and 1.5 billion yen, with the acquisition period from November 13, 2025, to April 30, 2026.

Impact on Shareholders and Future Outlook

This treasury stock acquisition corresponds to approximately 2.5% of the total issued shares (excluding treasury stock) and is implemented as part of shareholder returns. The acquisition method employed is market purchase, aiming to enhance capital efficiency and increase shareholder value. The company plans to continue treasury stock acquisitions within the scope of the Board of Directors’ resolution and will monitor this as part of its capital policy.