Webuild SpaMIL: WBD

Notice pursuant to article 143-quater, paragraph 5, of consob regulation no. 11971/99

· Issued by Webuild Spa
NOTICE PURSUANT TO ARTICLE 143-QUATER, PARAGRAPH 5, OF CONSOB REGULATION NO. 11971/99 ‌Milan - April 21, 2026 - Further to the press release issued today regarding the change in the share capital and the total number of voting rights, it is announced that, in view of the very limited number of newly issued shares (no. 1,327 shares), no significant changes are recorded with respect to the voting rights of Webuild S.p.A. shareholders holding a stake exceeding 3% of the total number of voting rights and registered in the List for the attainment of the enhanced voting right. The table below therefore shows no changes compared to the previous press release dated March 6, 2026.

CONTROLLING ENTITY

SHAREHOLDERS

REGISTRATION DATE

REGISTERED SHARES

% OF ORDINARY SHARE CAPITAL

DATE OF ACHIEVEMENT

VOTING RIGHTS

% OF VOTING RIGHTS

Pietro Salini

Salini S.p.A.

22/04/2022

361,685,772

35.54%

21/04/2024

723,371,544

46.67%

05/09/2022

175,877

0.02%

04/09/2024

351,754

0.02%

06/02/2024

665,286

0.06%

06/02/2026

1,330,572

0.09%

28/04/2025

25,000,000

2.46%

-

25,000,000

1.61%

24/06/2025

4,824,652

0.47%

-

4,824,652

0.31%

Totale Salini S.p.A.

392,351,587

38.55%

754,878,522

48.70%

Athena Partecipazioni S.r.l.

19/05/2024

1,069,524

0.11%

18/05/2024

2,139,048

0.14%

05/09/2024

631

0.0001%

04/09/2024

1,262

0.0001%

03/02/2024

6,001

0.0006%

03/02/2026

12,002

0.0008%

Totale Athena

1,076,156

0.11%

2,152,312

0.14%

Pietro Salini

23/05/2022

545,053

0.05%

22/05/2024

1,090,106

0.07%

07/09/2022

238

0.00002%

06/09/2024

476

0.00003%

06/02/2024

2,270

0.0002%

06/02/2026

4,540

0.0003%

25/08/2025

1,007,441

0.10%

-

1,007,441

0.07%

Totale Pietro Salini

1,555,002

0.15%

-

2,102,563

0.14%

TOTAL

394,982,745

38.81%

759,133,397

48.98%

Cassa Depositi e Prestiti S.p.A.

CDP Equity S.p.A.

29/04/2022

166,666,666

16.38%

28/04/2024

333,333,332

21.51%

01/09/2022

193,931

0.02%

31/08/2024

387,862

0.02%

01/02/2024

694,548

0.07%

01/02/2026

1,389,096

0.09%

TOTAL

-

167,555,145

16.47%

-

335,110,290

21.62%

‌***

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

Contacts:

Media Relations

Francesca Romana Chiarano Tel. +39 02 44422147

Email: f.chiarano@webuildgroup.com

Investor Relations

Amarilda Karaj

Tel. +39 06 677626975

Email : a.karaj@webuildgroup.com

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