RNS Number : 6652H

Obrascon Huarte Lain, S.A.

16 November 2018

London Stock Exchange

Madrid, November 16^th 2018

Ref.: Notification of Significant Event: Moody's rating action

Dear Sirs,

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

SIGNIFICANT EVENT

Moody´s Investors Services has today downgraded the corporate family rating (CFR) and senior unsecured debt ratings of OHL to Caa1 from B3, with stable outlook.

Yours faithfully,

José María del Cuvillo Pemán

Secretary of the Board of Directors

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