Nippon Aqua Co., Ltd. have decided on organizational changes, executive officer and personnel changes at the department head level and above as follows December 20, 2023: Changes in Executive Officers (Effective January 1, 2024): Chiemi Kawakami is Same position as current and Responsible for Procurement Department, Isao Tonegawa is Same position as current and Responsible for Contractor Development Department, Machinery Maintenance Department, Construction Department, Hiroshi Egawa is Same position as current and Responsible for Technology Department, Toshikuni Yasukawa is Same position as current and Responsible for Waterproofing Business Department, Shoji Sato is Same position as current and Responsible for Finance and Accounting Department, Kazuki Minagawa is Same position as current and Responsible for Administration. . Changes at the Department Head Level and Above (Effective January 1, 2024): The company appointed Shinichi Tamba as Head of Hokkaido & Tohoku Block.

Current Position: Division Director of Housing Business Department, Hokkaido & Tohoku Area. Yoshitaka Hamaguchi as Head of Kanto Block, Current Position: General Manager of Housing Business Department, Kanto Area. Tsuyoshi Nakashima: Head of Hokuriku & Shinetsu Block, Current Position: Division Director of Housing Business Department, Hokuriku & Shinetsu Area.

Shinya Sasagawa as Head of Chubu & Kansai Block, Current Position: General Manager of Construction Business Department, Kansai, Chugoku & Shikoku Area, Hiroyasu Miyazaki as Head of Chugoku & Shikoku Block, Current Position: Manager of Housing Business Department, Kansai, Chugoku & Shikoku Area, Seigou Ezaki as Head of Kyushu Block, Current Position: Area Manager of Housing Business Department, Kyushu Area. Nobuyoshi Sakamoto as Division Director of Construction Business Department. Current Position: General Manager of Construction Business Department, Kanto Area.

Yudai Tanabe as Division Director of Construction Business Department, Current Position: General Manager of Construction Business Department, Kyushu Area, Yuya Saito as General Manager of Housing Special Sales Department whereas his current position is Area Manager of Housing Business Department, Kanto Area.