Other relevant information. Share capital reduction

OBRASCÓN HUARTE LAIN, S.A. (OHL or the Company), pursuant to article 227 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 Authority (Comisión Nacional del Mercado de Valores) the following

OTHER RELEVANT INFORMATION NOTICE

On 20 April 2021 the deed of share capital reduction of the Company (and, accordingly, the amendment of the Company’s articles of association) has been registered with the Commercial Registry of Madrid (Registro Mercantil de Madrid). The share capital reduction consisted in the reduction of the nominal value of each and every one of the shares of the Company currently outstanding, by €0.35 per share (from €0.60 to €0.25 per share), consequently reducing the Company’s share capital by €100,291,901.15, from €171,928,973.40 to €71,637,072.25 (the Share Capital Reduction). The Share Capital Reduction has been carried out without return of contributions, in order to create a non-distributable voluntary reserve equal to the amount of the Share Capital Reduction (i.e., €100,291,901.15) pursuant to Section 335.c) of the Royal Legislative Decree 1/2010, of 2 July, approving the revised text of the Spanish Companies Act (the Spanish Companies Act).

The Share Capital Reduction was duly approved by the Extraordinary General Shareholders’ Meeting of OHL, on 26 March 2021, under its First item of the agenda

As a result of the Share Capital Reduction, Article 5 of the Company’s articles of association has been amended and will read as follows:

“Article 5.-

The Share capital amounts to SEVENTY ONE MILLION SIX HUNDRED AND SIXTY ONE THIRTY SEVEN THOUSAND SEVENTY TWO EUROS AND TWENTY FIVE CENTS (€71,637,072.25), represented by TWO HUNDRED AND EIGHTY SIX MILLION, FIVE HUNDRED AND FORTY EIGHT THOUSAND, TWO HUNDRED AND EIGHTY NINE (€286,548,289) shares of TWENTY FIVE CENTS OF EURO (€0.25) nominal value of one sole series and class.

All shares have been fully paid up”.

Madrid, 22 April 2021