Notice of Officer Personnel Changes and General Manager (Grade) Appointments within the SUING Group

SUING Co., Ltd. (President: Shinji Yasuda, Headquarters: Minato-ku, Tokyo) announces the following officer personnel changes and new appointments of General Managers (Grade) effective June 24, 2026, and July 1, 2026.

New Appointments for Officers, Auditors, and Executive Officers

・Officers (Effective July 1, 2026)

Name

New Appointment

Atsushi Otsuka

Representative Director and Vice President, SUING Co., Ltd.

Makoto Shimojo

Non-Executive Director, SUING Co., Ltd.

*Makoto Shimojo will continue to serve as an Executive Officer of INFRONIA HOLDINGS Co., Ltd. after July 1.

・Auditors (Effective July 1, 2026)

Name

New Appointment

Takashi Ishimura

Auditor, SUING Co., Ltd.

Auditor, SUING AM Co., Ltd.

Auditor, SUING ENGINEERING Co., Ltd.

・Executive Officers, SUING Co., Ltd. (Effective July 1, 2026)

Name

New Position

Previous Position

Shota Kobe

Executive Officer

Deputy General Manager, Corporate Planning Division

(Concurrent) General Manager, Finance Division

Finance Division

(Concurrent) General Manager, Finance Division

Tomoya Itayama

Executive Officer

General Manager, Development Division

SUING ENGINEERING Co., Ltd.

General Manager, System Design Development Department

(Concurrent) General Manager, S&M Technology Division

Toshihiro Suzuki

Executive Officer

Deputy General Manager, Engineering Business Division

SUING ENGINEERING Co., Ltd.

Deputy General Manager, Engineering Business Division

(Concurrent) General Manager, PE Technology Division 1

・Officer Personnel Changes, SUING AM Co., Ltd. (Effective June 24, 2026)

Name

New Position

Previous Position

Yuji Tsukamoto

Director

General Manager, Operations Business Division

SUING ENGINEERING Co., Ltd.

Director and General Manager, Operations Business Division

(Concurrent) Engineering Business Division

Seiichi Yamauchi

Director

Deputy General Manager, Sales Division

(Concurrent) General Manager, Asset Management Sales Division

Deputy General Manager, Sales Division

(Concurrent) General Manager, Asset Management Sales Division

Kenichi Matsuzuka

Director

Deputy General Manager, Asset Management Business Division

Asset Management Business Division

・Officer Personnel Changes, SUING ENGINEERING Co., Ltd. (Effective June 24, 2026)

Name

New Position

Previous Position

Toshihiro Suzuki

Director

Deputy General Manager, Engineering Business Division

Deputy General Manager, Engineering Business Division (Concurrent) General Manager, PE Technology Division 1

Nobuo Aoki

Director

Deputy General Manager, Sales Division

SUING Co., Ltd.

Deputy General Manager, Sales Division

[General Manager (Grade) Personnel Changes] (Effective July 1, 2026)

・SUING Co., Ltd.

Name

New Position

Previous Position

Shiro Sakamoto

Representative Director and Vice President

(Concurrent) General Manager, Corporate Planning Division

Representative Director and Vice President

Keita Yoshino

General Manager, Digital Service Division

General Manager, Corporate Planning Division

Shunji Fujiwara

Deputy General Manager, Corporate Planning Division

(Concurrent) General Manager, Corporate Planning Division

(Concurrent) General Manager, Public Relations Department

General Manager, Corporate Planning Department

(Concurrent) General Manager, Public Relations Department

Tomofumi Iwaki

Director, General Affairs Office

General Manager, General Affairs Department

Masataka Shimazu

Executive Officer

General Manager, Sales Division

Executive Officer

General Manager, Corporate Planning Division

Takahisa Kawase

General Manager, Sales Management Division

(Concurrent) General Manager, Sales Operations Department

(Concurrent) Construction Management Office

(Concurrent) Disaster Prevention Office

Director, Branch Planning and Management Office

(Concurrent) Construction Management Office

(Concurrent) Disaster Prevention Office

Hirokazu Fujimoto

General Manager, Procurement Division

(Concurrent) Construction Management Office

Manager, Procurement Department 1

(Concurrent) Procurement Division

Koji Nanpo

Deputy General Manager, Asset Management Business Division

(Concurrent) General Manager, Pharmaceutical Products Division

(Concurrent) Disaster Prevention Office

General Manager, Pharmaceutical Products Division

(Concurrent) Disaster Prevention Office

*Underlined sections indicate changes.

・SUING AM Co., Ltd.

Name

New Position

Previous Position

Atsushi Kimura

Director, Safety Management Office

SUING ENGINEERING Co., Ltd.

East Japan Construction Division

*Underlined sections indicate changes.

・SUING ENGINEERING Co., Ltd.

Name

New Position

Previous Position

Ikue Doi

General Manager, Governance Division

(Concurrent) General Manager, Governance Promotion Department

General Manager, Procurement Division

Shuichi Nonaka

Director

Deputy General Manager, Sales Division

(Concurrent) General Manager, Water and Sewerage Sales Division

Director

Deputy General Manager, Sales Division

(Concurrent) General Manager, Engineering Base Sales Division

Masao Yoshimoto

General Manager, Resource Recycling and Water Sales Division

(Concurrent) General Manager, Resource Recycling Sales Department

Deputy General Manager, Engineering Sales Division

Takashi Yamamoto

General Manager, PE Technology Division 1

Deputy General Manager, PE Technology Division 1

Eiji Teraoka

General Manager, Maintenance and Trial Run Support Division

(Concurrent) East Japan Construction Division

East Japan Construction Division

(Concurrent) Civil Engineering and Architecture Design Department

*Underlined sections indicate changes.

◇About SUING Group◇

SUING (reading: su-ing) is guided by the management philosophy of "continuously contributing to society through 'water,' the source of life, with an 'ing' spirit." The company handles everything from the design and construction to the operation and maintenance of water treatment facilities (water purification plants, sewage treatment plants, sludge recycling centers, night soil treatment plants, private facilities, etc.) (with approximately 300 operation and maintenance bases nationwide).

Under the brand message "Create Beyond Water," SUING addresses the challenges of local communities, continuously provides a safe and secure water environment, and supports the future of living and cities through water.

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