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 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 85 per cent. by value of the aggregate principal amount of outstanding Notes. The Company expects to reach accessions equivalent to 90% of the principal amount of the Notes soon.

Madrid 15 November 2024.