Webuild S p A : Notice of change in share capital

NOTICE OF CHANGE IN SHARE CAPITAL

(pursuant to Art. 85-bis of the Regulations adopted by Consob Resolution No. 11971 dated 14th May 1999, as amended, and Art.

2.6.2, paragraph 1, letter a), of the Market Regulations both organised and managed by Borsa Italiana S.p.A.)

AND OF THE TOTAL AMOUNT OF VOTING RIGHTS

(pursuant to art. 127-quinquies of Legislative Decree 58/1998 and art. 85-bis, paragraph 4-bis, of the CONSOB Issuers’ Regulation)

Milan, April 21, 2026 – Webuild S.p.A., also in view of the Company’s Ordinary Shareholders’ Meeting convened for 29 April 2026 (record date: 20 April 2026), announces the new composition of the share capital (fully subscribed and paid-in) and the total number of voting rights following the issuance, in connection with the resolutions adopted by the Extraordinary Shareholders’ Meeting of Webuild S.p.A. on 30 April 2021, of no. 1,327 Webuild ordinary shares, as a result of the partial exercise of the Webuild S.p.A. 2021-2030 Warrants, ISIN code IT0005454423 (“Anti-dilution Warrants“).

Indeed, following the issue, the share capital is still equal to 600,000,000 Euros, currently divided into 1,019,303,751 shares without express nominal value, of which 1,017,688,260 are ordinary shares and 1,615,491 are savings shares.

The updated Articles of Association, pursuant to the foregoing, alongside the certificate pursuant to Art. 2444 of the Italian Civil Code were filed today with the Milan – Monza Brianza – Lodi Business and Trade Registry.

The current composition of the share capital and the total amount of voting rights is shown below, highlighting the changes compared to the previous share capital.

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Webuild is a global leader in the construction of large, complex infrastructure, with a focus on sustainable mobility, hydropower, water treatment and supply, and green buildings. It has long been recognised as the world’s top contractor in the water infrastructure sector. Active in approximately 50 countries, the Group employs some 95,000 people directly and indirectly of over 125 nationalities. With 120 years of history and over 3,700 completed projects, Webuild boasts a track record that includes 13,686 kilometres of railways, 895 kilometres of metros, 82,708 kilometres of roads and highways, 1,023 kilometres of bridges and viaducts, 3,466 kilometres of tunnels, and 320 dams and hydropower plants. Among its most iconic delivered projects are the Grand Ethiopian Renaissance Dam, the expansion of the Panama Canal, the Long Beach International Gateway in the United States, the Second Bosphorus Bridge in Turkey, the Riachuelo environmental restoration system in Argentina, and new metro lines in cities such as Copenhagen, Paris, Rome, Milan, Naples, Doha, Thessaloniki, and Riyadh. Among those under construction are strategic public works in Italy, such as the New Genoa Breakwater, the Brenner Base Tunnel, the Pedemontana Lombarda Highway, Rome Metro’s Line C, sections of high-speed and/or high-capacity railways between Genoa and Milan, Verona and Padua, Naples and Bari, and Palermo,

Catania and Messina. Abroad, there is the Snowy 2.0 hydropower scheme in Australia and key sections of the Grand Paris Express in France. As of December 31, 2025, the Group reported total revenues of €13.6 billion and a total order backlog of €58.4 billion, with over 95% of the construction backlog aligned with the United Nations Sustainable Development Goals. Webuild is headquartered in Italy and subject to the direction and coordination of Salini Costruttori S.p.A. Listed on the Milan Stock Exchange (WBD; WBD.MI; WBD:IM), its stock is included in the MIB ESG index of Italy’s leading blue-chip companies for ESG practices.

More information at www.webuildgroup.com

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Webuild S.p.A. published this content on April 21, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on April 21, 2026 at 17:03 UTC.