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Changes in Officers1429Nippon Aqua Co.,Ltd.Construction and Materials

Notice Concerning Organizational Changes and Personnel Changes Involving Executive Officers and General Managers and Above

Effective 1 April 2026, the divisional and matrix organizational structures will be reorganized into a regional structure, with 3 new regional blocks established. In addition, a Safety and Quality Management Department will be established, and 1 executive officer and 12 general managers and above will be transferred.

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Who is moving to which position

Resolved 23 March 2026

Incoming appointee

13 items
Scheduled Appointment Date1 April 2026
Sakamoto Nobuyoshi (坂本 暢良)
Previous positionGeneral Manager, Kanto Building Construction Business Division
New positionExecutive Officer, Eastern Japan Building Construction Business
Saito Yuya (斉藤 悠也)
Previous positionGeneral Manager, Kanto Housing Business Division
New positionGeneral Manager, Kanto Housing Business Division
Hamaguchi Yoshitaka (濱口 善隆)
Previous positionGeneral Manager, Kanto Building Construction Project Management Department
New positionGeneral Manager, Eastern Japan Building Construction Project Management Division
Fujiwara Shingo (藤原 真吾)
Previous positionGeneral Manager, Waterproofing Business Department
New positionGeneral Manager, Waterproofing Business Division
Kiryu Roku (桐生 禄)
Previous positionGeneral Manager, Hokkaido and Tohoku Housing Business Department
New positionHead of Hokkaido and Tohoku Block
Ozawa Yusaku (小澤 雄策)
Previous positionGeneral Manager, Chubu and Hokuriku Building Construction Business Division
New positionHead of Chubu and Hokuriku Block
Mihara Yosuke (三原 陽介)
Previous positionDeputy General Manager, Kyushu Housing Business Division
New positionHead of Kyushu Block
Sugawara Kazuya (菅原 茄寿也)
Previous positionDeputy General Manager, Kanto Housing Business Division
New positionGeneral Manager, Kanto Housing Business Division
Sato Kiminobu (佐藤 公信)
Previous positionDeputy General Manager, Kanto Building Construction Business Division
New positionGeneral Manager, Kanto Building Construction Business Division
Takagi Hideaki (高木 秀彰)
Previous positionGeneral Manager, Kansai Building Construction Project Management Department
New positionGeneral Manager, Western Japan Building Construction Project Management Department
Nishio Satoshi (西尾 聡)
Previous positionGeneral Manager, Housing Quality Management Department
New positionGeneral Manager, Safety and Quality Management Department
Wachi Takashi (和知 貴志)
Previous positionDeputy General Manager, Technical Center
New positionGeneral Manager, Waterproofing Materials Development Department
Okamura Kazuma (岡村 和馬)
Previous positionManager, Technical Center
New positionGeneral Manager, Housing Insulation Materials Development Department
Reason for change

To achieve more agile and specialized organizational management based on market size and regional characteristics, the organizational structure will be reviewed. Because advanced expertise and responsiveness are required in the Tokyo metropolitan and Kansai areas, responsible managers overseeing each area will be appointed. In other regions, 3 regional blocks will be newly established to enable faster decision-making and improve responsiveness in line with regional characteristics. In addition, a Safety and Quality Management Department will be established to further strengthen the safety management structure at construction sites.

Details of organizational changes

The divisional structure comprising the Housing Business Division, Building Construction Business Division and Waterproofing Business Division, together with the matrix organization covering 45 locations nationwide, will be reviewed. Responsible managers overseeing each area will be appointed for the Housing Business Division and Building Construction Business Division in the Tokyo metropolitan and Kansai areas. A 3-block structure comprising the Hokkaido and Tohoku Block, Chubu and Hokuriku Block, and Kyushu Block will be newly established. The Housing Quality Management Department will be reorganized and dissolved, and a Safety and Quality Management Department will be established.

Who is moving to which position
ItemDetails
Resolution date23 March 2026
Scheduled Appointment Date1 April 2026
Name of appointeeSakamoto Nobuyoshi (坂本 暢良), Saito Yuya (斉藤 悠也), Hamaguchi Yoshitaka (濱口 善隆), Fujiwara Shingo (藤原 真吾), Kiryu Roku (桐生 禄), Ozawa Yusaku (小澤 雄策), Mihara Yosuke (三原 陽介), Sugawara Kazuya (菅原 茄寿也), Sato Kiminobu (佐藤 公信), Takagi Hideaki (高木 秀彰), Nishio Satoshi (西尾 聡), Wachi Takashi (和知 貴志), Okamura Kazuma (岡村 和馬)
Appointee's new positionExecutive Officer, Eastern Japan Building Construction Business, General Manager, Kanto Housing Business Division, General Manager, Eastern Japan Building Construction Project Management Division, General Manager, Waterproofing Business Division, Head of Hokkaido and Tohoku Block, Head of Chubu and Hokuriku Block, Head of Kyushu Block, General Manager, Kanto Housing Business Division, General Manager, Kanto Building Construction Business Division, General Manager, Western Japan Building Construction Project Management Department, General Manager, Safety and Quality Management Department, General Manager, Waterproofing Materials Development Department, General Manager, Housing Insulation Materials Development Department
Appointee's previous positionGeneral Manager, Kanto Building Construction Business Division, General Manager, Kanto Housing Business Division, General Manager, Kanto Building Construction Project Management Department, General Manager, Waterproofing Business Department, General Manager, Hokkaido and Tohoku Housing Business Department, General Manager, Chubu and Hokuriku Building Construction Business Division, Deputy General Manager, Kyushu Housing Business Division, Deputy General Manager, Kanto Housing Business Division, Deputy General Manager, Kanto Building Construction Business Division, General Manager, Kansai Building Construction Project Management Department, General Manager, Housing Quality Management Department, Deputy General Manager, Technical Center, Manager, Technical Center
Reason for changeTo achieve more agile and specialized organizational management based on market size and regional characteristics, the organizational structure will be reviewed. Because advanced expertise and responsiveness are required in the Tokyo metropolitan and Kansai areas, responsible managers overseeing each area will be appointed. In other regions, 3 regional blocks will be newly established to enable faster decision-making and improve responsiveness in line with regional characteristics. In addition, a Safety and Quality Management Department will be established to further strengthen the safety management structure at construction sites.
Details of organizational changesThe divisional structure comprising the Housing Business Division, Building Construction Business Division and Waterproofing Business Division, together with the matrix organization covering 45 locations nationwide, will be reviewed. Responsible managers overseeing each area will be appointed for the Housing Business Division and Building Construction Business Division in the Tokyo metropolitan and Kansai areas. A 3-block structure comprising the Hokkaido and Tohoku Block, Chubu and Hokuriku Block, and Kyushu Block will be newly established. The Housing Quality Management Department will be reorganized and dissolved, and a Safety and Quality Management Department will be established.
Items this document does not state (14)
Date of departureAppointee's date of birthYear the appointee joined the CompanyNumber of shares held by the appointeeName of departing officerFormer position of departing officerNew position of departing officerReason for departureWhether the incumbent will remain in officeReasons for appointmentNumber of directors after the changeFiling as an independent officerChange in Corporate Governance StructureSubject to Approval by the General Meeting of Shareholders

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To achieve more agile and specialized organizational management based on market size and regional characteristics. In the Tokyo metropolitan and Kansai areas, to enhance expertise and responsiveness, and in other regions, to improve the speed of decision-making and responsiveness. Also, to further strengthen the safety management structure at construction sites.

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Notice Concerning Organizational Changes and Personnel Changes Involving Executive Officers and General Managers and Above | Nippon Aqua Co.,Ltd. (1429) timely disclosure | Komori