Comisión Nacional del Mercado de Valores (CNMV)

28th of June 2017

In compliance with the provisions of art. 228 of the Consolidated Text of the Securities Market Act, ELECNOR,

S.A. notifies the following

SIGNIFICANT EVENT

Amendment of the date of entry into force of the new Liquidity Contract with Mercados y Gestión de Valores AV, S.A.

Regarding the cancellation of the Liquidity Contract entered into with Mercados y Gestión de Valores AV, S.A. in 2010, and the signing a new Liquidity Contract with Mercados y Gestión de Valores AV, S.A., you are hereby informed that the date the new contract will come into force is on 11 July 2017, instead of on 28 June 2017.

ELECNOR, S.A. Mercantile Registry of Madrid, sheet M-5418, folio 22, volume 269 general, 8th section Registered address: C/ Marqués de Mondéjar, 33 28028 Madrid Fiscal Id. Code A-48027056

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