Significant Event. In relation to the termination of contracts announced by Aleatica

OBRASCÓN HUARTE LAIN, S.A. (“OHL” or the “Company”), pursuant to article 228 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 

SIGNIFICANT EVENT

In relation to the news published in the media regarding the termination of the engineering and construction contract for the execution of Autopista Atizapán Atlacomulco, in México, and the engineering and construction contract for the execution of Autopista Río Magdalena, in Colombia, by Aleatica, OHL informs that: 

– It has been surprised in its good faith within the commercial relationship framework that are held with Aleatica, being in a complete disagreement with the termination of both contracts for not having, in its opinion, legal foundation.

– It is understood that the unilateral termination of both contracts by Aleatica is a direct consequence of the arbitration initiated by OHL against both subsidiaries of Aleatica. Specifically lodged against Autopista Rio Magdalena (Colombia) on 30^th November 2018 and against Autopista Atizapán (Mexico) the 4^th April 2019 to appeal of its serious contractual breaches.

– The termination of the contracts adds to the serious contractual breaches of the Aleatica Group Concession subsidiaries and as a consequence OHL will adopt the legal measures deemed necessary in defense of its interests.

Madrid, April 9th, 2019