OBRASCÓN HUARTE LAIN, S.A. (“OHLA” or the “Company”), pursuant to article 227 of the consolidated text of the Spanish Securities Market Act approved by Royal Legislative Decree 4/2015, of 23 October, hereby notifies the Spanish National Securities Market Commission (Comisión Nacional del Mercado de Valores) (“CNMV”) the following

OTHER RELEVANT INFORMATION

Following the communication of inside information (comunicación de información privilegiada) published by the Company on 4 November 2024 (with official registry number 2,448), the Company hereby announces that the calculation agent has received accessions to the Lock-Up Agreement from holders of the Split Coupon Senior Secured Notes due 2026 of OHLA Operaciones, S.A. (ISIN: XS2356570239 / XS2356571120) (the “Notes”) holding more than 93 per cent. in value of the aggregate principal amount of Notes outstanding.

With such level of accessions to the Lock-Up Agreement, the Company has gathered a sufficient majority for the formalisation on a consensual basis of the amendments to the terms and conditions of the Notes that are necessary to implement the recapitalisation transaction (the “Recapitalisation”) initiated by the Company, as described in the aforementioned inside information announcement. Accordingly, the Company informs it will launch a consent solicitation process for the approval of such amendments by holders of the Notes.

The support received from holders of the Notes to the Recapitalisation transaction shows the creditors’ confidence in the Company’s business and the viability of the proposed transaction, and enables its implementation on a consensual basis in accordance with the terms and conditions of the Notes, avoiding the use of other drag-along (including through a scheme of arrangement) or coercive tools.

Madrid 18 November 2024.