RNS Number : 1837M

Obrascon Huarte Lain, S.A.

06 May 2020

London Stock Exchange

Madrid, 6^th May 2020

Ref.: Notification of Significant Event: 1Q 2020 Results

Dear Sirs,

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

Other Relevant Information

OHL will release 1Q 2020 Results on Wednesday May 20^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. 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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