RNS Number : 2508F

Obrascon Huarte Lain, S.A.

25 October 2018

London Stock Exchange

Madrid, 25^th October 2018

Ref.: Notification of Significant Event: 9M 2018 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 9M 2018 Results on Wednesday November 14 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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