 
Director, Senior Executive Managing Officer
Corporate Division Head
Ichiro Yamaoka
| April 1991 | Joined Yagi Corporation | |
| April 2012 | Deputy General Manager of Third Business Division, Sales Division II | |
| June 2013 | General Manager of Third Business Division, Sales Division II | |
| April 2014 | General Manager of First Business Division, Sales Division II | |
| June 2014 | Director, General Manager of Third Sales Division and Second Business Division | |
| April 2015 | Director, General Manager of Third Sales Division and Third Business Division | |
| June 2015 | Director, General Manager of Second Sales Division | |
| April 2017 | Director, Deputy Head of Sales Division II, and Third Sales Division Manager | |
| April 2018 | Director, Deputy Head of Sales Division II, and Second Sales Division Manager | |
| June 2018 | Director, Head of Sales Division III and First Division Manager | |
| April 2019 | Director, Head of Sales Division II and Second Division Manager | |
| June 2019 | Managing Director, Head of Sales Division II and Second Division Manager | |
| April 2020 | Managing Director, Head of Sales Division II | |
| April 2021 | Director and Managing Executive Officer overseeing Material and Apparel Segments | |
| October 2021 | Director and Managing Executive Officer overseeing Material and Apparel Segments and Material Business Headquarters | |
| April 2022 | Director and Managing Executive Officer, overseeing Sales Division | |
| October 2022 | Director and Managing Executive Officer, overseeing Sales Division and Corporate Planning Division | |
| April 2023 | Director and Managing Executive Officer, overseeing all Divisions and Administration Division | |
| October 2023 | Director and Managing Executive Officer, Administration Division | |
| April 2024 | Director and Senior Managing Executive Officer, Corporate Headquarters General Manager (current) | 
 
 
 
