OBRASCÓN HUARTE LAIN, S.A. (“OHLA” or the “Company”), pursuant to article 226 of Law 6/2023, of 17 March, on the Securities Markets and of the Investment Services, hereby notifies the Spanish National Securities Market Commission (Comisión Nacional del Mercado de Valores) (“CNMV”) of the following

INSIDE INFORMATION

Elías Corp, S.L. (company appointed by Excelsior Times, S.L.U.) (“Excelsior); (ii) Key Wolf, S.L.U. (”Key Wolf“); (iii) Prestige Inversiones SIL, S.A. (company appointed by The Nimo’s Holding, S.L.U.) (”The Nimo”); and (iv) Coenersol, S.L. (“Coenersol”), the “Investors”, who subscribed part of the capital increase without rights executed on December 17, 2024 (notice number 31804), in the document containing their commitment to invest in the capital increases agreed by the Extraordinary General Shareholders’ Meeting held on 22 October, 2024, mandated the syndicate of underwriters of the capital increase, Santander, Bestinver and Alantra, jointly the “Entities”, to locate investors interested in subscribing the rights remaining after the subscription of those necessary to comply with their own investment commitments and those of the significant shareholders Forjar Capital, S. L. and Solid Rock Capital, S. L., S.A. (notice number 31804). L. and Solid Rock Capital, S.L., owned by the Amodio brothers.

Today, the Entities have informed the Company of the agreement signed with new investors (the “New Investors”) who commit to an investment of 6Mn euros to be made by subscribing 63,612,484 rights to be transferred to them by the Investors pursuant to the above mentioned mandate, and the purchase of 1,637,516 additional rights. The New Investors have assumed the commitment not to dispose of the shares received with the capital increase or “lock up” for a minimum period of 6 months. Likewise, the Entities have informed that with this transaction and the contingent tranche destined to the employees, all the pre-emptive subscription rights that will correspond to the Investors will be subscribed.

Thus, with this new investment commitment, which is added to the previous commitment of the Amodio brothers and the Investors and the contingent tranche for the company’s employees for an amount of up to three million euros, the capital increase with rights for an amount of 80 million euros has a committed amount of around 50% of its amount. Thus, to date, including the three million euro contingent tranche for employees, the Company has secured 110 million euros, representing 73% of the total of the two capital increases approved by the Extraordinary Shareholders’ Meeting on 22 October.

In Madrid, 23 December 2024