September 08, 2025

Weekly communication regarding share buy-back programme

Purchased no. 1,105,000 shares (equal to 0.11% of the ordinary share capital)

Overall equivalent: € 3.97 millions

Milan, September 8, 2025 – Webuild informs that it has purchased, in the period September 1-5, 2025 included, no. 1,105,000 ordinary treasury shares (equal to 0.11% of the ordinary share capital and 6.12% of the total volume of the exchanged shares in the aforementioned period) for an overall countervalue of €3,975,927.38

In light of the above, the total amount of ordinary treasury shares held by the company as of September 5, 2025, amounts to 27.523.437 ordinary treasury shares, the equivalent of 2.705% of the ordinary share capital.

Below, attached, the details of the purchases made (through the intermediary Intermonte S.p.A.) and the operations carried out in the aforementioned period, in detail.

Weekly communication regarding share buy-back programme
Information material - Bridge project over the Strait of Messina
(*) Required information