Notice regarding the Integration of Group Companies involved in the Bridge, Disaster Prevention, and Water Gate Businesses

-July 18, 2025-

IHI Corporation (hereafter “IHI”) hereby announces that its wholly owned subsidiary, IHI Infrastructure Systems Co., Ltd. (hereafter “IIS”), has entered into an Absorption-Type Merger Agreement with its wholly owned subsidiary, IHI Infrastructure Construction Co., Ltd. (hereafter “IIK”). Through this merger, IIS will succeed to all businesses of IIK related to bridges, disaster prevention, and water gates, thereby integrating the group companies involved in these businesses (hereinafter, the “Integration”).

1. Purpose of the Integration
In recent years, in the domestic market, there has been an increasing demand for the efficient and effective development, maintenance, and management of social infrastructure facilities, including bridges and water gates, as well as for maintaining disaster prevention functions and enabling prompt recovery in the event of disasters. Meanwhile, in overseas markets, strong infrastructure demand continues, and Japan’s advanced technologies in the fields of bridges and water gates are highly sought after.

Under these circumstances, by combining the strengths and human resources of both companies, we will further focus on the bridge maintenance business and accelerate the establishment of a framework to address social challenges. In addition, by integrating the bridge and water gate technologies cultivated domestically with the long-span bridge technologies developed overseas, we aim to establish a leading position in Japan’s bridge and water gate industry and achieve further growth through a global growth cycle.

2. Schedule of the Integration
Date of Absorption-Type Merger Agreement: July 18, 2025
Effective Date: November 1, 2025 (planned)

3. Other
The impact of this integration on IHI’s consolidated business results will be minimal.

　　

[Overview of both companies (As of March 31, 2025)]

Company Name	IHI Infrastructure Systems Co., Ltd. (Surviving Company）	IHI Infrastructure Construction Co., Ltd. (Absorbed Company)
Head office	3 Ohama-Nishi-machi, Sakai-ku, Sakai-shi, Osaka, Japan	Toyosu IHI Building, 1-1, Toyosu 3-chome, Koto-ku, Tokyo, Japan
Representative	Manabu Inoue, President	Akira Moriuchi, President
Business Description	Design, fabrication, construction, inspection, repair, and maintenance of bridges; and fabrication of water gates and other steel structures	Business related to the design, fabrication, installation, repair, refurbishment, modification, and control systems of water gates and steel structures Business related to the repair, refurbishment, and modification of steel bridges and prestressed concrete (PC) bridges Business related to the design, fabrication, and installation of prestressed concrete (PC) bridges
Net Sales (million yen)	54,130	37,601
Shareholder and Shareholding Ratio	IHI 100％	IIS 100%

[Scheme of the Integration]