Press Releases

Up-to-Date Business Announcements from TGS

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TGS Q1-2010 webcast and teleconference

29 April 2010

Asker, Norway (29 April 2010) TGS will publish its Q1 2010 results at approximately 08:00 AM Norwegian time on 6 May 2010. At the same time, a recorded presentation with audio by CEO Robert Hobbs will be made available at www.tgsnopec.com.

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TGS 2009 annual report

28 April 2010

Please find attached English and Norwegian versions of the TGS 2009 Annual Report. The reports can be downloaded fromwww.newsweb.no and www.tgsnopec.com. Hard copies will be sent to the shareholders in mid May.

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TGS - Change of ex dividend date from June 7th to June 4th 2010

26 April 2010

TGS has elected to change the previously proposed ex-dividend date to be 4 June 2010, the day following the Annual General Meeting to be held on 3 June.

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