OBRASCON HUARTE LAIN, S.A. (“OHLA” or the “Company”) in fulfilment of the provisions of article 227 of the Refunded Text of the Securities Market Law approved by Royal Decree Law 4/2015 of 23^rd October informs the Spanish National Stock Market Commission (“CNMV” for its Spanish initials) of the following.

RELEVANT INFORMATION

The Board of Directors of OHLA held after the General Ordinary Shareholders Meeting and following the favourable report of the Appointments and Remunerations Commission has agreed:

• To accept the resignation tendered by Mr. José Antonio Fernández Gallar as Director of the Company.
• To remodel the Board’s Commissions which composition from this date is as follows:

Audit and Compliance Commission

President

Mr. Francisco García Martín (Independent)

Vocals

Mr. César Cañedo-Argüelles Torrejón (Independent)

Mr. Luis Fernando Amodio Giombini (Dominical)

Mrs. Reyes Calderón Cuadrado (Independent)

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Appointments and Remunerations Commission

President

Mrs. Reyes Calderón Cuadrado (Independent)

Vocals

Mr. Francisco García Martín (Independent)

Mr. Juan Antonio Santamera Sánchez (Independent)

Mrs. Ximena Caraza Campos (Independent)

Madrid, the 30^th June 2023.