Inside Information. Noteholders. Early accession deadline extension

OBRASCÓN HUARTE LAIN, S.A. (“OHL” or the “Company”), pursuant to article 226 of the consolidated text of the 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

INSIDE INFORMATION NOTICE

In the Regulatory Announcement dated 21 January 2021 (official registry number 679) (the “21 January Announcement”) the Company announced the execution of the Lock-up Agreement by certain Key Shareholders and the Ad Hoc Group and the beginning of the accession period in which Noteholders could accede to the Lock-up Agreement. Following a strong response from Noteholders (with over 87% having acceded), and in order to give a further opportunity to those Noteholders still finalising their accessions to do so and be entitled to receive the Lock-Up Fee, the Company has extended the Early Accession Deadline to 5 p.m. (London time) on 8 February 2021.

Noteholders wishing to accede to the Lock-Up Agreement prior to the Early Accession Deadline (and be entitled to receive the Lock-Up Fee) should provide as soon as possible to the Calculation Agent a duly completed and executed accession letter (in the form set out in the Lock-Up Agreement) and evidence of their beneficial holdings.

Capitalised terms used in this announcement have the same meaning ascribed to them in the 21 January Announcement.

Madrid, 5 February 2021