| 2024.07 | Submission of Change Report（Helios Techno Holding Co., Ltd.）
Submission of Change Report（Helios Techno Holding Co., Ltd.） |
| 2024.06 | Submission of Report of Possession of Large Volume（Helios Techno Holding Co., Ltd.）
Submission of Change Report（TOMOE CORPORATION） |
| 2024.05 | Submission of Change Report（CHUOKEIZAI-SHA HOLDINGS, INC.） |
| 2024.01 | Submission of Change Report（MANSEI CORPORATION）
Submission of Change Report（TAKADAKIKO (Steel Construction) CO., LTD.）
Submission of Report of Possession of Large Volume（TOMOE CORPORATION）
Submission of Change Report（ARAYA INDUSTRIAL CO.,LTD.） |
| 2023.11 | Submission of Change Report（ARAYA INDUSTRIAL CO.,LTD.）
Notice of changes of its major shareholders（ARAYA INDUSTRIAL CO.,LTD.） |
| 2023.10 | Submission of Change Report（ARAYA INDUSTRIAL CO.,LTD.）
Submission of Change Report（ARAYA INDUSTRIAL CO.,LTD.）
Submission of Report of Possession of Large Volume（ARAYA INDUSTRIAL CO.,LTD.）
Submission of Change Report（The Takigami Steel Construction Co., Ltd.）
Submission of Change Report（OHMOTO GUMI Co., Ltd.）
Submission of Report of Possession of Large Volume（TAKADAKIKO (Steel Construction) CO., LTD.） |
| 2023.04 | Submission of Change Report（MANSEI CORPORATION） |
| 2023.03 | Submission of Change Report（KITA KOUDENSHA Corporation） |
| 2023.02 | Official Partnership with Tampines Rovers
Official Partnership with Albirex Niigata Singapore |
| 2023.01 | Notice Regarding Establishment of Record Date for Convocation of Extraordinary General Meeting of Shareholders（SANKYO KASEI CORPORATION）
Notice Regarding Request for Convocation of Extraordinary General Meeting of Shareholders（SANKYO KASEI CORPORATION）
Request for Convocation of Extraordinary General Meeting of Shareholders（SANKYO KASEI CORPORATION） |
| 2022.11 | Submission of Change Report（The Takigami Steel Construction Co., Ltd.）
Submission of Change Report（MANSEI CORPORATION）
Submission of Change Report（OHMOTO GUMI Co., Ltd.）
Submission of Report of Possession of Large Volume（Kawagishi Bridge Works Co., Ltd.）
Submission of Report of Possession of Large Volume（TAKADAKIKO (Steel Construction) CO., LTD.） |
| 2022.03 | Submission of Change Report（SANKYO KASEI CORPORATION）
Submission of Change Report（The Takigami Steel Construction Co., Ltd.） |
| 2021.12 | Submission of Change Report（SANKYO KASEI CORPORATION）
Submission of Change Report（MANSEI CORPORATION） |
| 2021.10 | Submission of Change Report（Cardinal Co., Ltd.）
Submission of Change Report（Cardinal Co., Ltd.）
Submission of Change Report（MANSEI CORPORATION）
Submission of Report of Possession of Large Volume（OHMOTO GUMI Co., Ltd.） |
| 2021.09 | Submission of Change Report（SANKYO KASEI CORPORATION）
Submission of Change Report（Cardinal Co., Ltd.）
Submission of Change Report（Cardinal Co., Ltd.）
Submission of Change Report（Cardinal Co., Ltd.）
Submission of Report of Possession of Large Volume（Cardinal Co., Ltd.） |
| 2021.06 | Submission of Change Report（The Takigami Steel Construction Co., Ltd.）
Submission of Change Report（SANKYO KASEI CORPORATION） |
| 2021.02 | Submission of Change Report（MANSEI CORPORATION）
Submission of Change Report（The Takigami Steel Construction Co., Ltd.）
Submission of Change Report（SANKYO KASEI CORPORATION）
Submission of Change Report（KITA KOUDENSHA Corporation）
Submission of Change Report（CHUOKEIZAI-SHA HOLDINGS, INC.）
Submission of Change Report（Joban Kaihatsu Co., Ltd.）
（Reference）Amendment of Tender Offer Notification
（Reference）Amendment of Position Statement |
| 2021.01 | Submission of Change Report（Joban Kaihatsu Co., Ltd.） |
| 2020.12 | Submission of Change Report（Joban Kaihatsu Co., Ltd.）
（Reference）Amendment of Tender Offer Notification
（Reference）Amendment of Position Statement
（Reference）Amendment of Tender Offer Notification |
| 2020.12 | Submission of Change Report（Joban Kaihatsu Co., Ltd.） |
| 2020.12 | Submission of Report of Possession of Large Volume（The Takigami Steel Construction Co., Ltd.） |
| 2020.12 | Submission of Change Report（MANSEI CORPORATION） （Reference）Notice of changes of its major shareholders |
| 2020.12 | Submission of Change Report（SANKYO KASEI CORPORATION） （Reference）Notice of changes of its major shareholders |
| 2020.12 | Submission of Change Report（Joban Kaihatsu Co., Ltd.） |
| 2020.12 | Submission of Change Report（Joban Kaihatsu Co., Ltd.） |
| 2020.12 | Submission of Change Report（Joban Kaihatsu Co., Ltd.） |
| 2020.12 | Submission of Report of Possession of Large Volume（Joban Kaihatsu Co., Ltd.）
（Reference）Tender Offer Notification
（Reference）Position Statement |
| 2020.02 | Submission of Change Report（Kaneshita Construction Co., Ltd.）
（Reference）Notice of a share buyback
（Reference）Notice of changes of its major shareholders |
| 2020.01 | Submission of Change Report（Kaneshita Construction Co., Ltd.） |
| 2020.01 | Submission of Report of Possession of Large Volume（MANSEI CORPORATION） |
| 2020.01 | Submission of Report of Possession of Large Volume（SANKYO KASEI CORPORATION） |
| 2020.01 | Submission of Report of Possession of Large Volume（KITA KOUDENSHA Corporation） |
| 2018.12 | Submission of Change Report（Kaneshita Construction Co., Ltd.） |
| 2018.08 | Submission of Change Report（Kaneshita Construction Co., Ltd.） |
| 2017.11 | Submission of Report of Possession of Large Volume（Kaneshita Construction Co., Ltd.） |
| 2016.12 | Submission of Change Report（Danto Holdings Corporation） |
| 2016.03 | Submission of Report of Possession of Large Volume（CHUOKEIZAI-SHA HOLDINGS, INC.） |
| 2016.03 | Submission of Report of Possession of Large Volume（Danto Holdings Corporation） |
| 2016.03 | Submission of Change Report（CHUOKEIZAI-SHA HOLDINGS, INC.） |
| 2016.03 | Submission of Change Report（Danto Holdings Corporation） |
| 2015.07 | Submission of Change Report（Danto Holdings Corporation） |
| 2015.06 | Submission of Report of Possession of Large Volume（Danto Holdings Corporation） |
| 2015.02 | Submission of Change Report（CHUOKEIZAI-SHA HOLDINGS, INC.） |
| 2014.10 | Submission of Report of Possession of Large Volume（CHUOKEIZAI-SHA HOLDINGS, INC.） |
| 2013.06 | Submission of Report of Possession of Large Volume（Aoki Marine Co., Ltd） |
