Mandatory notification of trade

1/18/2013 1:46 AM EST

On 17. January 2013, Siem Offshore purchased 55 500 
of its own shares in the market. The average price 
was NOK 8,50 per share.

The transaction is part of the share buy-back 
programme announced by the Company on 4. September 
2012. All shares purchased under this buy-back 
programme shall be cancelled. After this transaction 
the aggregate number of shares that have been 
purchased is 2 442 366 and the total number of 
Company shares in issue following a cancellation will 
be 393 509 274.

For further information:
Terje Sørensen
Chief Executive Officer
Siem Offshore Inc.
Mobile phone: +47 91 31 61 64