Directors (And Other Officers)
| Concept | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Directors (and other officers) | ||||||||||
| Information about directors (and corporate auditors) | ||||||||||
| Official title or position | — | 
                                                取締役監査等委員
                                                
                                             | 
                                                代表取締役社長
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役監査等委員
                                                
                                             | 
                                                取締役執行役員副社長(土木事業・地盤事業・ブロック環境事業担当)
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役監査等委員
                                                
                                             | 
                                                取締役監査等委員(常勤)
                                                
                                             | 
                                                取締役常務執行役員(管理本部長、安全品質環境本部担当)
                                                
                                             | 
| Name | — | 
                                                黒 田 清 行
                                                
                                             | 
                                                奥 田 眞 也
                                                
                                             | 
                                                大 沢 真 理
                                                
                                             | 
                                                前 田  清
                                                
                                             | 
                                                大 林   淳
                                                
                                             | 
                                                川 村 倫 大
                                                
                                             | 
                                                鈴 木 昌 治
                                                
                                             | 
                                                三 浦 久美子
                                                
                                             | 
                                                川 地 洋 治
                                                
                                             | 
| Date of birth | — | 
                                                1970-01-12
                                                
                                             | 
                                                1955-01-09
                                                
                                             | 
                                                1953-04-04
                                                
                                             | 
                                                1954-07-09
                                                
                                             | 
                                                1961-03-24
                                                
                                             | 
                                                1966-06-06
                                                
                                             | 
                                                1954-12-06
                                                
                                             | 
                                                1962-01-19
                                                
                                             | 
                                                1960-01-08
                                                
                                             | 
| Career summary | — | |||||||||
| Term of office | — | 
                                                (注)4
                                                
                                             | 
                                                (注)3
                                                
                                             | 
                                                (注)3
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)3
                                                
                                             | 
                                                (注)3
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)3
                                                
                                             | 
| Number of shares held (Ordinary shares) | 
                                                24,890
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                9,526
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                7,989
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,166
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                4,209
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             |