Webuild

Board/Management Information • Oct 6, 2025

PRESS RELEASE

BOARD DIRECTOR FRANCESCO RENATO MELE RESIGNS

Milan, October 6, 2025 - Webuild S.p.A. informs that Francesco Renato Mele, the non-executive Board Director, who was not independent from the Company, has resigned from his role of Board Director, due to imminent professional duties, with effectiveness from when his substitute is appointed.

According to the information known by the Company, the resigning Board Director, who is not a member of any Committee, does not hold any Company shares.

The Board of Directors, during the first useful meeting, will arrange for co-optation, pursuant to and with effects of Article 2386 of the Italian Civil Code, and according to what is provided for by Article 20 of the Bylaws.

The Company wishes to thank Francesco Renato Mele for his professionalism and for his dedication that were both demonstrated during his role, wishing him further personal and professional successes.

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Webuild is a global leader in the construction of large, complex infrastructure projects, with a focus on sustainable mobility, hydropower, water treatment, and green buildings. A recognized leader in the water sector and active in about 50 countries, the Group employs approximately 95,000 people of over 125 nationalities. It boasts nearly 120 years of experience with over 3,700 completed projects. Its track record includes 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 iconic projects are the expansion of the Panama Canal, the Long Beach International Gateway bridge in California (USA), the Second Bosphorus Bridge (Turkey), the Sydney Metro Northwest skytrain viaduct and bridge (Australia), the Kingdom Centre skyscraper in Riyadh (Saudi Arabia), and metro lines in cities such as Copenhagen, Paris, Rome, Milan, Naples, Doha, Thessaloniki, and Riyadh. Ongoing projects include the New Genoa Breakwater, the Brenner Base Tunnel, the Pedemontana Lombarda Highway, Metro di Roma's Line C, the Genoa-Milan and Naples-Bari high-speed/high-capacity railways, the Palermo-Catania-Messina high-capacity railway, the the Snowy 2.0 hydropower scheme in Australian and the the Trojena dams in Saudi Arabia . As of December 31, 2024, the Group registered total revenues for €12 billion. As of June 30, 2025, its total order backlog stands at approximately €59 billion, with over 90% of its construction backlog related to projects linked to the United Nations Sustainable Development Goals (SDGs). Listed on the Borsa Italiana stock exchange in Milan (WBD; WBD.MI; WBD:IM), it is member of the MIB ESG index of Italian companies with best ESG practices. Headquartered in Italy, it is subject to the management and coordination of Salini Costruttori S.p.A.

More information at www.webuildgroup.com

Contacts: Media Relations Investor Relations Francesca Romana Chiarano Amarilda Karaj Tel. +39 338 247 4827 +39 06 6776 26975

mail: f.chiarano@webuildgroup.com email: a.karaj@webuildgroup.com