OBRASCÓN HUARTE LAIN, S.A. (“OHLA” 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

The Company informs that today has signed a contract for the sale of shares in relation to the sale of its stake in the concession company CENTRO HOSPITALARIO UNIVERSITARIO DE MONTREAL (CHUM), representing the 25% of the share capital, to a group of subsidiaries of BBGI Group. The transaction also includes the sale of the subordinated loan that the OHLA Group against the concession company. The price of the transaction has been initially agreed at CAD $ 88.15 million (61.71 million euros), which net of interest and other items amounts to CAD $ 81.77 million to date (57.24 million euros). The initially agreed price will accrue additional interest until the closing and settlement of the transaction.

The closing of the transaction is subject to certain customary conditions to this type of deals.