Notice Regarding the Resolution on Matters Concerning the Acquisition of Treasury Stock and the Resolution on Matters Concerning the Cancellation of Treasury Stock (Acquisition of Treasury Stock Based on the Provisions of Article 165, Paragraph 2 of the Companies Act and Cancellation of Treasury Stock Based on the Provisions of Article 178 of the Companies Act)

Overview of Capital Policy

At the Board of Directors meeting held on May 1, 2026, Sumitomo Corporation resolved to acquire and cancel treasury stock aimed at improving capital efficiency and enhancing shareholder returns. The shares to be acquired are common shares of the company, with an acquisition upper limit of 22 million shares (approximately 1.8% of the total issued shares), and the total acquisition price capped at 80 billion yen. The acquisition period is from May 7, 2026, to March 31, 2027, and the acquisition method will be market purchases on the Tokyo Stock Exchange. Additionally, after the stock split on July 1, 2026, the acquisition upper limit will be changed to 88 million shares.

Impact on Shareholders and Future Plans

All acquired treasury shares are planned to be cancelled on April 9, 2027, which will reduce the number of issued shares and is expected to enhance the value per share. As of March 31, 2026, the treasury stock holdings were 18,766,168 shares, and this acquisition and cancellation is aimed at improving capital efficiency and strengthening shareholder returns. The implementation of the stock split will increase the upper limit for acquisition shares, thereby enhancing the flexibility of future capital policies.