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

Following the communication of other relevant information published by the Company on 2 December 2024 (with official registry number 31,590), the Company announces that on the date hereof the Company’s subsidiary OHL Operaciones, S.A.U. (the “Issuer”) has obtained the approval from holders representing more than 90 per cent. in aggregate principal amount outstanding of its Split Coupon Senior Secured Notes due 2026 (ISIN: XS2356570239 / XS2356571120) (the “Notes”) to the proposed resolutions (“Noteholder Resolutions”) set out in the consent solicitation memorandum published by the Issuer on 2 December 2024 (the “Consent Solicitation Memorandum”).

With this level of support, the Company has obtained sufficient votes to approve the Noteholder Resolutions by electronic means by way of Extraordinary Resolution.

However, the Consent Solicitation shall remain open, and holders of the Notes may continue to vote until 11.00 a.m. (CET) on 6 January 2025, following which the Noteholder Resolutions shall become effective and the noteholders’ meeting, of which notice was given pursuant to the Consent Solicitation Memorandum, will not be required to be held.

Capitalised terms used in this announcement have the same meaning ascribed to them in the Consent Solicitation Memorandum.

Madrid 10 December 2024.