RNS Number : 6159X

Obrascon Huarte Lain, S.A.

30 April 2019

London Stock Exchange

Madrid, 30^th April 2019

Ref.: Notification of Significant Event: 1Q 2019 Results

Dear Sirs,

The Company, OBRASCON HUARTE LAIN, S.A. (OHL), in compliance with current legislation, hereby reports the following:

Significant Event

OHL will release 1Q2019 Results on Monday May 13^th after market closing.

The management team of OHL will hold a Conference call (conducted in English) for analysts & investors on the same day at 18:30 CET / 17:30 GMT.

The details of the conference will be available at: www.ohl.es

The recording of the call will be available on the web during a week.

Yours faithfully,

José María del Cuvillo Pemán

Secretary of the Board of Directors

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NORLLFFSSDIIVIA