Webuild — Regulatory Filings 2023

Sep 14, 2023

PRESS RELEASE

WEBUILD: ORDERS ACQUIRED, BEING FINALISED IN AUSTRALIA AT €7.3 BLN YEAR-TO-DATE WITH ORDER BOOK AT €13.3 BLN

AUSTRALIA BIGGEST MARKET OUTSIDE ITALY

GROUP'S GROWTH ALSO THANKS TO AGREEMENT ON SNOWY 2.0, A STRATEGIC INFRASTRUCTURE PROJECT FOR ENERGY TRANSITION

• Group orders acquired, being finalised at €21 billion since the start of 2023, with total potential global backlog at more than €68 billion, surpassing target
• Snowy 2.0 project reset valued at €7 billion (AU\$12 billion) with delivery date set for 2028
• Contract to follow Incentivised Target Cost collaborative model between client and contractor

MILAN, September 14, 2023 – Webuild grows in Australia, the biggest market for the Group outside Italy, with €7.3 billion in orders acquired or in the process of being finalised during the first eight months of 2023, bringing the backlog in the country to €13.3 billion. The result is supported by the reset of the Snowy 2.0 contract signed by the Group with its subsidiary, Clough, a partner in the Future Generation Joint Venture, and Snowy Hydro Limited to guarantee the sustainable development of Snowy 2.0, one of the largest renewable energy projects in the world. It brings to €21 billion the value of orders acquired or in the process of being finalised in the first eight months of the year at the global level, bringing the total potential backlog to more than €68 billion, including €4.5 billon of best offers and those registered by subsidiaries. The project to build a bridge across the Strait of Messina is not included.

With the total cost to complete the Snowy 2.0 project now AU\$12 billion (€7 billion), the Snowy 2.0 agreement contract reset revises some elements of the contract with Future Generation Joint Venture, including changing to an Incentivised Target Cost model, a form of collaborative contracting in which the client and the contractor operate in a more integrated structure. The project reset marks a turning point towards the completion of the biggest renewable energy project in Australia and affirms Webuild's leadership in supporting energy transition in the countries where it operates. Snowy Hydro Limited will settle all outstanding claims with Future Generation Joint Venture. The target date for commercial operation of all units is December 2028 with

first power to be delivered in the second half of 2027. The reset foresees delivery of an additional 200 MW or 10% capacity, for a total dispatchable generation capacity of 2,200 MW with 350,000 MW/h (or 160 hours) of energy storage.

With Clough, Webuild is involved in the development of a series of infrastructure projects in Australia, while expanding into new sectors. Clough recently won a contract to build a shiplift at the port of Darwin, the biggest infrastructure for the servicing and maintenance of ships in the Northern Territory.

In Western Australia, the Group is part of a joint-venture working on one of the largest urea plants in the world for the production of fertiliser. It is also involved in the expansion of a wastewater treatment plant, the biggest in the state. In Victoria, the Group is responsible for the tunnel work on the North East Link, which will complete a highway network in Melbourne. There are also projects like Tallawarra Stage B, the country's first net zero emissions hydrogen and gas capable power station in New South Wales. There are also Waitsia Gas Project Stage 2 Development, a gas processing plant in Dongara, as well as the the restructuring of the Lombrum naval base on the island of Manus in Papua New Guinea.

Webuild together with Clough have more than a century of experience in the country, with iconic projects such as the Melbourne City Loop, a metro line built in the 1970s. More recently, there was the construction of the skyrain viaduct and curved cable-stayed bridge for the Sydney Metro Northwest line.

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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