Matters Concerning Controlling Shareholders, etc.

Kumagai Gumi Co., Ltd. ("the Company") hereby inform matters concerning controlling shareholders, etc. regarding Sumitomo Forestry Co., Ltd., which is the other affiliated company of the Company, as follows. 1．Trade name, etc. of the parent company, controlling shareholder (excluding the parent company), other affiliated company or other affiliated company's parent company (As of March 31, 2026) 2