Mowi ASA

Major Shareholding Notification • Mar 19, 2018

BLACKROCK

12 Throgmorton Avenue London EC2N 2DL Tel 020 7743 3650 Fax 020 7668 4045 www.blackrock.co.uk

19 March 2018

Marine Harvest ASA PO Box 4102 Sandviken 5835 Bergen NORWAY kim.dosvig@marineharvest.com glenn.flanders@marineharvest.com Ingrid.Jaeger@marineharvest.com ma@oslobors.no

Dear Sir/Madam.

Disclosure of Significant Shareholding under the Norwegian Securities Trading Act

On 16th March 2018 BlackRock, Inc acquired 2,731,047 shares and voting rights in Marine Harvest ASA, resulting in a shareholding of 24,788,866 (5.06%) 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

BLACKROCK

12 Throgmorton Avenue London EC2N 2DL Tel 020 7743 3650 Fax 020 7668 4045 www.blackrock.co.uk

Appendix A

Chain of controlling companies
Company	Number of shares and voting rights	Percentage of shares and voting rights
BlackRock (Netherlands) B.V.	65,163	0.01%
BlackRock (Singapore) Limited	20,712	0.00%
BlackRock Advisors (UK) Limited	2.524.264	0.51%
BlackRock Advisors, LLC	612,884	0.13%
BlackRock Asset Management Canada Limited	255,345	0.05%
BlackRock Asset Management Deutschland AG	679,366	0.14%
BlackRock Asset Management North Asia Limited	3,600	0.00%
BlackRock Financial Management, Inc.	20,035	0.00%
BlackRock Fund Advisors	7,235,708	1.48%
BlackRock Institutional Trust Company, National Association	5,906,008	1.20%
BlackRock International Limited	9,519	$0.00\%$
BlackRock Investment Management (Australia) Limited	105,431	0.02%
BlackRock Investment Management (UK) Limited	6,439,426	1.31%
BlackRock Investment Management, LLC	444,196	0.09%
BlackRock Japan Co., Ltd.	467,209	0.10%
TOTAL	24,788,866	5.06%