Webuild — Regulatory Filings 2023

Sep 8, 2023

PRESS RELEASE

WEBUILD GROWS IN AUSTRALIA WITH EXPANSION IN MARITIME SECTOR: CLOUGH JV WINS AU\$420 MLN CONTRACT

PROJECT TO BUILD BIGGEST SHIPFLIT IN NORTHERN TERRITORY

• Project to boost Darwin's role as hub for marine maintenance and servicing
• Facility to serve commercial and private vessels, along with the Department of Defence

MILAN, September 8, 2023 – Webuild grows once more in Australia with its expansion into a new sector following Clough, its Australian subsidiary, and joint-venture partner BMD winning a AU\$420-million construction contract for the Darwin Shiplift Facility. The project will consolidate the coastal city's position as a hub for marine maintenance and servicing in the Northern Territory. The facility, with wet berths and a hard stand area for ship repair and maintenance works, will also serve the Department of Defence, along with commercial and private vessels from the fishing, oil, gas and marine industries. Clough and BMD each own 50 percent of the joint-venture.

Commissioned by the Northern Territory government, the Darwin Shiplift Facility will be the biggest in territory. It will be 26 metres wide and 103 metres long. It will have the capacity to lift vessels weighing up to 5,500 tonnes, including the new fleet of offshore patrol vessels procured by the Australian Defence Force. The project is to be completed in July 2025.

Located in the East Arm precinct, between the Marine Supply Base at the Port of Darwin and the multi-user barge ramp facility at the Marine Industry Park, the facility will reinforce Darwin's marine maintenance and servicing activities and create spin-off benefits for local businesses. Darwin has the only functional deep water harbour in northern Australia. Without the shiplift facility, large vessels would need to travel approximately 10 days or more to be serviced elsewhere.

Australia is Webuild's biggest market after Italy. Projects in the country include the construction of the largest urea plant in the country for the production of fertilisers, the upgrading of the largest wastewater treatment plant in Western Australia, the development of part of the Sydney Metro-Western Sydney Airport rail line, and the tunnelling work for the North East Link, the missing section of Melbourne's beltway.

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Webuild is a global leader in the design and construction of large, complex projects in the sectors of sustainable mobility (rail, metro, bridges, roads, ports), hydropower (dams, power plants), water (treatment and desalination plants, wastewater management, irrigation dams) and green buildings (civil and industrial buildings, airports, stadiums, hospitals). It supports clients in achieving the Sustainable Development Goals (SDGs) established by the United Nations. The recognised leader in infrastructure for the water sector, it operates in 50 countries. It has 85,000 direct and indirect employees from 100 nationalities, and a supply chain of more than 17,500 businesses. In its 117 years of applied engineering on more than 3,200 projects, the Group has built 14,118 kilometres of rail and metro lines, 82,509 kilometres of roads and highways, 1,018 kilometres of bridges and viaducts, 3,396 kilometres of tunnels, and 313 dams and hydropower plants. Projects include the Genoa San Giorgio Bridge, the second Panama Canal, the Lake Mead Third Intake hydraulic project near Las Vegas in the United States, the Airport Line in Perth, Australia and the Stavros Niarchos Foundation Cultural Center in Athens. Projects under construction include the Brenner Base Tunnel, Line 4 of the Milan metro system, the Terzo Valico dei Giovi-Nodo di Genova in Italy, and the North East Link of Melbourne in Australia. As of June 30, 2023, the Group had total orders worth €61 billion, with more than 90% of the Group's construction backlog related to projects linked to the

advancement of the United Nations 2030 Sustainable Development Goals (SDGs). Webuild, subject to the direction and coordination of Salini Costruttori S.p.A., is headquartered in Italy and is listed on the Milan stock exchange (WBD; WBD.MI; WBD:IM). Since 2021, it is member of the MIB ESG, the index of Italian companies with the best ESG practices.

More information at www.webuildgroup.com

Contacts:

Media Relations Investor Relations Francesca Romana Chiarano Amarilda Karaj Tel. +39 338 247 4827 Tel +39 02 444 22476 email: f.chiarano@webuildgroup.com email: a.karaj@webuildgroup.com

International Media Relations Gilles Castonguay Tel. +39 342 682 6321 email: gr.castonguay@webuildgroup.com