Mowi ASA

Major Shareholding Notification • Sep 19, 2017

BLAC¹ RocI( ¹²

Tel 020 7743 3650 Fax 020 7668 4045 www.btackmck.co.uk

Marine Harvest ASA ¹⁸ September ²⁰¹⁷ P0 Box 4102 Sandviken 5835 Bergen NORWAY kim.dosvici@marineharvest.com cilenn.flanders © marineharvest.com lncirid.Jaecjer© marineharvest.com ma@ oslobors.no

Dear Sir/Madam,

Disclosure of Significant Shareholding under the Norwegian Securities Trading Act

On ^{1 8} September ²⁰¹⁷ BlackRock, Inc acquired 461,902 shares and voting rights in Marine Harvest ASA, resulting in ^a shareholding of 24,736,396 (5.05%) shares and voting rights.

The chain of controlled undertakings through which the shares and voting rights are effectively held is attached at Appendix A.

In the event of any queries, ^please contact the Regulatory Thresholds Reporting Team on ^{020 7743} 3650.

Yours faithfully,

For the BlackRock Group

Laurel Clark Vice President Regulatory Threshold Reporting Team Phone: 020 7743 3650

BLIC1<R(C1< ¹² Throcrnorton Avenue London ECZN 20L

Tel 020 7743 3650 Fax 020 7668 4045 www.blackrock.co.uk

Appendix A

C ha in of ie ll in nt co m p an s co ro g
C om p an y	N be of sh um r ar es d ti ri gh ts an vo ng	P sh of nt er ce ag e ar es d ti ri gh ts an vo ng
B la ck R k (N he rl ds ) B et oc an y	58 ,5 49	0. 0 1%
la ck k B R in (S ) Li ite d oc ga po re m	33 ,8 30	0. 0 1%
la ck k B R A dv is im ite d (U K ) L oc or s	2, 78 3, 29 9	0. 57 %
la ck k B R A dv is LL C oc or s,	62 4, 86 2	0. 13 %
B la ck R k A M C ad im ite d L et t oc ss an ag em en an a	23 1, 14 0	0. 05 %
la ck k B R A M D ch la nd A G et t ts oc ss an ag em en eu	62 5, 62 4	0. 13 %
la ck k B R A M th N A si Li ite d et t oc ss an ag em en or m a	2, 27 4	0. 00 %
la ck k B R Fi ia l M In t, oc na nc an ag em en c.	16 2, 14 0	0. 03 %
B la ck R k nd A dv is Fu oc or s	3, 9 14 ,7 86	0. 80 %
la ck k B R In itu tio l C T N io l st st at oc na ru om pa ny na , A ia ti ss oc on	6, 20 8, 6 17	1 .2 7%
B la ck R k In io l im ite d L te at oc rn na	25 4, 75 8	0. 05 %
B la ck R k In M (A al ia ) im ite d st t L t tr oc ve m en an ag em en us	13 2, 15 3	0. 03 %
la ck k B R In M (U ) im ite d st t K L t oc ve m en an ag em en	8, 57 17 1 9,	1. 75 %
la ck k B R In M LL C st t t, oc ve m en an ag em en	48 4, 87 9	0. 10 %
la ck k B R C Lt d. Ja oc p an o. ,	64 0, 3 14	0. 13 %
T O T A L	24 ,7 36 ,3 96	5. 05 %