REN Redes Energeticas Nacionais : Participação qualificada (Oman Oil)

COMUNICADO SOBRE PARTICIPAÇÃO QUALIFICADA

Nos termos e para os efeitos do disposto no artigo 17.º do Código dos Valores

Mobiliários e no Regulamento da CMVM n.º 5/2008, a REN - Redes Energéticas

Nacionais, SGPS, S.A. (REN) informa ter recebido, no dia 13 de dezembro de 2017, a

comunicação abaixo por parte da Oman Oil Company S.A.O.C. (Oman Oil), informando

que reduziu a sua participação qualificada indireta de 15% para 12% do capital social

e dos direitos de voto na REN.

De acordo com a informação prestada pela Oman Oil, para os efeitos da alínea b), do

n.º 1 do artigo 20.º do Código dos Valores Mobiliários, a participação é imputável (i) à

sociedade Mazoon B.V., como titular direta, (ii) à sociedade Oman Oil Holding Europe,

B.V., (iii) à Oman Oil e (iv) ao Sultanato de Omã. A Mazoon B.V. é uma subsidiária

integralmente detida pela Oman Oil Holding Europe B.V., que, por sua vez, é

integralmente detida pela Oman Oil, sendo esta última integralmente detida pelo

Governo do Sultanato de Omã.

Lisboa, 14 de dezembro de 2017

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

Sociedade Aberta

Capital Social: € 667.191.262

CRC de Lisboa: n.º único de registo e pessoa colectiva n.º 503 264 032

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

1749-061 Lisboa

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ESMA/2015/1 597

Standard form for notification of major holdings

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the competent authority)

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are at tached:

REN- Redes Energeticas Nacionais, S.G.P.S., S.A.

2. Reason for the notification (please tick the appropriate box or boxes):

[JAn acquisition or disposal of voting rights

[1 An acquisition or disposal of financial instruments [X] An event changing the breakdown of voting rights [j Other (please specify)

3. Details of person subject to the notification obIigation:

Name: Mazoon, B.V.

Strawinskylaan 3127, 8° Amsterdam, Netherlands

4. Full name of shareholder(s) (if different from 3.)

5. Date on which the threshold was crossed or reached:

12-12-20 17

6. Total positions of person(s) subject to the notification obligation:

% of voting rights attached to shares

(total of 7.A)

% of voting rights through financial in- struments

Total of both in %

(7.A + 7.B)

(total of 7.B.1 + 7.B.2)

Resulting situation on the date on which threshold was crossed or reached Position of previous notification (if appli- cable)

80,100,000 12%

80,100,000 15%

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7. Notified details of the resulting situation on the date on which the threshold was crossed or reached':

A: Voting rights attached to shares

Classltype of shares

SIN code (if ci- ble)

Number of voting rights'

Direct

(Art 9 of Directive 2004/1 09/EC)

PTRELOAM0008 80,100,000

Indirect

(Art 10 of Directive 2004/1 09/EC)

% of voting rights

0 12%

SUBTOTALA 80,100,000 12%

Direct

(Art 9 of Directive 2004/1 09/EC)

B 1: Financial Instruments according to Art. 13(1)(a) of Directive 200411091EC

Type of financial instrument

Expiration date'

Exercise!

Conversion Period'

na.

n.a. n.a.

Number of voting rights that may be acquired j the instrument is exer cised! converted.

Indirect

(Art 10 of Directive 2004/1 09/EC)

0%

% of voting rights

SUBTOTAL B.1

B 2: Financial Instruments with similar economic effect according to Art. 13(1)(b) of Directive 2004/1 O9IEC

Type of financial instrument

Expiration date'

Exercise!

Conversion Period IPhysical or cash settlement'

n.a

n.a. n.a.

SUBTOTAL B.2

Number of voting rights

% of voting rights

2

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8. Information in relation to the person subject to the notification obligation (please tick the applica ble box):

[]Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer.

[x] Full chain of controlled undertakings through which the voting rights andlor the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity:

Name

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial in struments if it equals or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

Sultanate of Oman

Oman Oil Company S.A.O.C.

12% 12%

0% 12%

0% 12%

Oman Oil Holding Eu- rope B.V.

12%

0% 12%

Mazoon By.

12%

0% 12%

9. In case of proxy voting: [name of the proxy holderl vi1l cease to hold [% and nun,berl voting rights as of [date I n.a.

10. Additional information:

Although Mazoon BV maintains the 80,100,000 shares in REN it held prior to this notification, the percent age shareholding held by Mazoon BV in REN has fallen from 15% to 12% as a result of Mazoon BV not subscribing its rights entitlement in the REN capital increase which was registered on 12th December 2017 and which increased the issued share capital of REN from 534,000,000 shares to 667,191,262 shares. Mazoon B.V is a fully owned subsicary of Oman Oil Holding Europe, B.V., with registered offices in Stra winskylaan, 3127, 8.°, 10777ZX, A'4sterdam, Netherlands, which in turn is a fully owned subsidiary of Oman Oil Company S.A.O.C., with ljeadqufrters in Muscat, Sultanate of Oman, which is wholly owned by

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the Government of the Sultanate dflOman

13/12/2017

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