Kumagai Gumi Co. Ltd. announced at a meeting of the Board of Directors held on February 13, 2026, that it decided to make changes to its Representative Directors. Koji Okaichi: Executive Vice President, In charge of Technology, In charge of New Business, In charge of International Business.

Current Representative Director, Executive Vice President, In charge of Technology, In charge of Safety, In charge of Quality and Environment, In charge of New Business, In charge of International Business, In charge of Promotion of Collaboration with Sumitomo Forestry Co. Ltd. The above person will retire from the position of Director after the Ordinary General Meeting of Shareholders scheduled for June 26, 2026. Changes in responsibilities will take effect on April 1, 2026.