Unofficial Translation

This is an unofficial translation of the press release made below and it has been prepared for information purposes only. In the case of any discrepancy between this translation and the Portuguese version, the Portuguese version will prevail

COMMUNICATION OF MANAGER'S TRANSACTION

Pursuant to and for the purposes of number 3 of article 19 of Regulation (EU) number 596/2014 of the European Parliament and of the Council of 16 April 2014, of article 248-B of the Portuguese Securities Code and of article 14 of CMVM's Regulation no. 5/2008, as amended, REN - Redes Energéticas Nacionais, SGPS, S.A. ("REN") hereby informs and announces that Mr. Manuel

Ramos de Sousa Sebastião, member of the Board of Directors of REN and Chairman of the Audit Committee of REN, communicated to REN, on 13

December 2017, a manager's transaction, as detailed information attached herein pursuant to the Commission Implementing Regulation (EU) 2016/523, of 10 March 2016.

Lisbon, 13 December 2017

REN - REDES ENERGÉTICAS NACIONAIS, SGPS, S.A.

End of communication

REN - REDES ENERGÉTICAS NACIONAIS, S.G.P.S., S.A.

Publicly Listed Company

Share capital: € 534,000,000

CRC of Lisbon: number of registry and company 503 264 032

Address: Avenida Estados Unidos da América, n.º 55

1749-061 Lisboa

Communication on Transactions over shares of

REN - Redes Energéticas Nacionais, SGPS, S.A.

1

Details of the person discharging managerial responsibilities/person closely associated

a)

Name

Manuel Ramos de Sousa Sebastião

2

Reason for the notification

a)

Position/status

Non-Executive Director and President of the Audit Committee

b)

Initial notification/ Amendment

Initial notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

REN - Redes Energéticas Nacionais, SGPS, S.A.

b)

LEI

549300FR1FN48IGHR915

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Share of REN - Redes Energéticas Nacionais, SGPS, S.A

ISIN PTREL0AM0008

b)

Nature of the transaction

Acquisition under the share capital increase

c)

Price(s) and volume(s)

- Rights issue

- Assessment and distribution of rights

Price(s)

Volume

1.877 EUR

1,758

1.877 EUR

283

d)

Aggregated information - Aggregated volume - Price

Weighted average priceVolume

1.877 EUR

2,041

e)

Date of the transaction - Rights issue

- Assessment and distribution of rights

2017-12-07; 08:30h 2017-12-12; 08:30h

f)

Place of the transaction

Euronext - Euronext Lisbon

As a consequence of such transaction:

  • a) The initial number of REN's shares held before the abovementioned transaction was of 7,000; and

  • b) The final number of REN's shares held after abovementioned transactions is of 9,041.

REN - Redes Energéticas Nacionais SGPS SA published this content on 13 December 2017 and is solely responsible for the information contained herein.
Distributed by Public, unedited and unaltered, on 13 December 2017 18:21:05 UTC.

Original documenthttp://www.ren.pt/en-GB/investidores/comunicados_a_cmvm/ficheiros_en/managers_transaction_over_ren_shares__manuel_sebastiao_

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