ASKER, NORWAY (21 December 2015) - TGS will release a preliminary update on Q4 2015 operating revenues, as well as financial guidance for 2016 before opening of the Oslo Stock Exchange on 7 January 2016. In connection with this CEO Robert Hobbs and CFO Sven Børre Larsen will host a conference call.

ASKER, NORWAY (4 December 2015) - Due to an amendment to IAS 38 Intangible assets, the amortization method for the seismic multi-client libraries will have to change with effect from 1 January 2016.