Directors (And Other Officers)
| Concept | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | As at 2025-06-26 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Directors (and other officers) | |||||||||||||
| Information about directors (and corporate auditors) | |||||||||||||
| Official title or position | 
                                                常務取締役
                                                
                                             | 
                                                代表取締役社長
                                                
                                             | 
                                                監査役
                                                
                                             | 
                                                取締役
                                                
                                             | — | 
                                                常勤監査役
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                監査役
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役研究開発本部長
                                                
                                             | 
                                                常勤監査役
                                                
                                             | 
                                                取締役
                                                
                                             | 
| Name | 
                                                鈴 土   雅
                                                
                                             | 
                                                堀 内 裕 之
                                                
                                             | 
                                                小 山 雅 博
                                                
                                             | 
                                                石 川 さ と 子
                                                
                                             | — | 
                                                石 田 直 行
                                                
                                             | 
                                                井 上 康 知
                                                
                                             | 
                                                梅 田 泰 弘
                                                
                                             | 
                                                松 本 洋 明
                                                
                                             | 
                                                髙 木 正 一 郎
                                                
                                             | 
                                                綿 貫   充
                                                
                                             | 
                                                石 黒 一 守
                                                
                                             | 
                                                松 浦 真 洋
                                                
                                             | 
| Date of birth | 
                                                1962-08-12
                                                
                                             | 
                                                1962-03-21
                                                
                                             | 
                                                1961-08-18
                                                
                                             | 
                                                1964-12-24
                                                
                                             | — | 
                                                1964-10-18
                                                
                                             | 
                                                1960-07-14
                                                
                                             | 
                                                1970-12-02
                                                
                                             | 
                                                1958-10-07
                                                
                                             | 
                                                1961-01-13
                                                
                                             | 
                                                1964-09-04
                                                
                                             | 
                                                1963-02-08
                                                
                                             | 
                                                1969-08-19
                                                
                                             | 
| Career summary | — | ||||||||||||
| Term of office | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)6
                                                
                                             | 
                                                (注)4
                                                
                                             | — | 
                                                (注)6
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)7
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)5
                                                
                                             | 
                                                (注)4
                                                
                                             | 
| Number of shares held (Ordinary shares) | 
                                                3,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                8,700
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                32,400
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                6,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                700
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                6,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             |