Webuild

Pre-Annual General Meeting Information • May 17, 2025

PRESS RELEASE

SAVINGS SHAREHOLDERS SPECIAL MEETING.

NOTICE OF DEPOSIT OF THE NOTICE OF CALL AND OF THE RELATED DOCUMENTATION.

Milan, May 17, 2025 – Please note that the following documents have been made available to the public on the Company's website www.webuildgroup.com, in the "Governance/Shareholders' Meeting" section, at the registered office and authorized storage mechanism ():

• the notice of call of the Savings Shareholders Special Meeting of Webuild S.p.A. ("Meeting"), called for June 18, 2025, at 10 a.m., in single call (please also see the "Governance/Mandatory notices" section);

• the extract of the aforementioned notice of call, published today in the newspaper "Corriere della Sera" in accordance with the applicable legislation (please also see "Governance / Mandatory Notices" section);

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• the Report of the Board of Directors on the items on the agenda of the Meeting;

• the Common Representative's Report on the items of the agenda of the Meeting.

Webuild is a global leader in the design and construction of large, complex infrastructure projects in sustainable mobility, hydropower, water treatment, and green buildings. A recognized leader in the water sector, it works in approximately 50 countries with over 92,000 people of 125 different nationalities. The Group boasts nearly 120 years of applied engineering on more than 3,700 completed projects, with a track record of 13,648 kilometres of railways, 891 kilometres of metro lines, 82,577 kilometres of roads and highways, 1,022 kilometres of bridges and viaducts, 3,462 kilometres of tunnels, and 318 dams and hydropower plants. Among its most famous projects: the expansion of the Panama Canal, the Long Beach International Gateway bridge in California, the Third Bosphorus Bridge in Turkey, the Sydney Metro Northwest skytrain viaduct and bridge, the Kingdom Centre skyscraper in Riyadh, Saudi Arabia, and numerous metro lines in Copenhagen, Paris, Rome, Milan, Naples, Doha, Thessaloniki, and Riyadh. Among the main ongoing projects, the following stand out: the New Genoa Breakwater, the Brenner Base Tunnel, the Pedemontana Lombarda Highway, Line C of Rome's metro network, the high-capacity railways between Genoa and Milan, the high-speed railway between Naples and Bari, the Palermo-Catania-Messina high-capacity railway, the Snowy 2.0 hydropower scheme in Australia, and the Trojena dam network in Saudi Arabia. As of December 31, 2024, the Webuild Group registered total revenues for €12 billion and a total backlog of €63 billion, with more than 90% of its construction backlog related to projects linked to the United Nations Sustainable Development Goals (SDGs). Webuild, subject to the direction and coordination of Salini Costruttori S.p.A., is headquartered in Italy, is listed on the Milan Stock Exchange, Borsa Italiana (WBD; WBD.MI; WBD:IM), and since 2021, it is included in the MIB ESG index of the Italian blue-chip 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 06 6776 26975 email: f.chiarano@webuildgroup.com email: a.karaj@webuildgroup.com