OBRASCÓN HUARTE LAIN, S.A. (“OHLA” or the “Company”), pursuant to article 227 of Law 6/2023, of 17 March, on the Securities Markets and the Investment Services, hereby notifies the Spanish National Securities Market Commission (Comisión Nacional del Mercado de Valores) (“CNMV”) the following

OTHER RELEVANT INFORMATION

In relation to (i) the communication of other relevant information dated 22 October 2024 (with registration number 30,969); (ii) the inside information notice dated 10 January 2025 (with registration number 2,546); (iii) the communication of other relevant information dated 16 January 2025 (with registration number 32,168); and (iv) the communication of other relevant information dated 31 January 2025 (with registration number 32,365), the Company informs that: (i) (ii) (iii) The public deed for the execution of the Capital Increase with Preferential Subscription Rights has been granted on the date hereof. The share capital of OHLA has been set at 297,781,145.75 euros, divided into 1,191,124,583 shares with a nominal value of 0.25 euros each, belonging to a single series and class. On 4 February 2025, the CNMV verified the fulfilment of the legal requirements for the admission to trading of the 320,000,000 New Shares of the Capital Increase with Preferential Subscription Rights on the Madrid and Barcelona Stock Exchanges through the Automated Quotation System (Continuous Market) where the currently issued shares of OHLA are traded. These shares have been admitted to trading by the Madrid and Barcelona Stock Exchanges on 4 February 2025, with trading effective from 5 February 2025.