Relevant information. Rescheduling of the Noteholders’ Meetings on 24 July

OBRASCÓN HUARTE LAIN, S.A. (“OHL” 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

RELEVANT INFORMATION

Pursuant to the communication of relevant information published on 3 July 2020 with register number 3180, by virtue of which the Company called the noteholders’ meetings (respectively, the “Noteholders’ Meetings” and the “Noteholders”) of the following issues:

• €400,000,000 4.750% Senior Notes due 2022 (of which €323,000,000 in principal amount remain outstanding) (ISIN: XS1043961439; Common Code:104396143) (“Issue 1”); and

• €325,000,000 5.50% Senior Notes due 2023 (of which €269,900,000 in principal amount remain outstanding) (ISIN: XS1206510569; Common Code: 120651056) (“Issue 2”)

jointly and respectively, the “Issues” and the “Notes”, which were to be held at first call at Torre Espacio, Paseo de la Castellana, 259D – 28046, Madrid on 20 July 2020, at 12.00 p.m. and 12.30 p.m. (CET) for the Issue 1 and the Issue 2, respectively, the Company announces that it has decided to extend the consent period and therefore has agreed to reschedule the Noteholders’ Meetings which will now be held at first call on 24 July 2020 at 12.00 p.m. and 12.30 p.m. (CET) for the Issue 1 and the Issue 2, respectively.

The expiration time to send consent instructions or instruct to attend to the Noteholders’ Meetings is extended to 12.00 p.m. (CET) on 21 July 2020 and the record date for the purposes of being entitled to attend to the Meetings will be on 17 July 2020.

Other than as described herein, the terms of the Consent Solicitation Memorandum made available to holders of the Notes (including the Resolutions and the Proposals) remain as set out in the Consent Solicitation Memorandum prepared by the Company.

ADDITIONAL INFORMATION

The following contact details have been provided for noteholders to request any information or clarifications regarding these Noteholders’ Meetings:

Tabulation Agent:

Lucid Issuer Services Limited

Att: David Shilson

Tankerton Works

12 Argyle Walk London WC1H 8HA

United Kingdom

E-mail: ohl@lucid-is.com

Telephone: +44 (0) 20 7704 0880

Madrid 16 July 2020.