Notice Regarding Resolution of Matters Related to Share Buyback (Share Buyback Based on Articles 165-2 of the Companies Act and Articles 156 of the Companies Act as Applied by Clause 3 of Article 165)

Overview of the Share Buyback

ALSOK Corporation, at its Board of Directors meeting held on May 13, 2026, resolved to acquire treasury stock based on the provisions of Article 156 of the Companies Act, which is applied by reading substitutively under Article 165, Paragraph 3 of the Companies Act. The target of acquisition is the company's common stock, with a maximum of 9,000,000 shares (1.85% of total outstanding shares excluding treasury stock), a total acquisition amount limit of 100 billion yen, and a period from May 14, 2026, to September 30, 2026. The acquisition method will be through the Tokyo Stock Exchange’s off-market share buyback trading (ToSTNeT-3) or market purchase.

Impact on Shareholder Return and Capital Policy

This share buyback is conducted as part of flexible capital policy adjustments responding to changing management environments and as a shareholder return measure. Approximately 1.85% of the total outstanding shares (excluding treasury stock) of 486,088,073 shares will be acquired, aiming to optimize capital structure and enhance shareholder value. The number of treasury shares post-acquisition is expected to increase; however, the specific impact amount and stock price influence remain unknown.