Press Releases

Correction on the attendance and proxy form for the ordinary general meeting 2011 10 May 2011OSE

ASKER, NORWAY (10 May 2011) - TGS has updated the attendance and proxy forms for the 2011 Ordinary General Meeting that was published this morning.  The deadline to return the attendance form, power of attorney and proxy statement is 6 June 2011 at 12:00 CET and not 3 June 2011 as originally published.  This error only affected the documents posted to the stock exchange and was corrected in the documents mailed directly to shareholders.  The corrected forms are connected to this release and can be found on the TGS website.

Updated Attendance and Proxy Form 2011:  English  Norwegian

TGS apologizes for this oversight.

About TGS

TGS provides multi-client geoscience data to oil and gas Exploration and Production companies worldwide. In addition to extensive global geophysical and geological data libraries that include multi-client seismic data, magnetic and gravity data, digital well logs, production data and directional surveys, TGS also offers advanced processing and imaging services, interpretation products, and data integration solutions.

All statements in this press release other than statements of historical fact are forward-looking statements, which are subject to a number of risks, uncertainties and assumptions that are difficult to predict, and are based upon assumptions as to future events that may not prove accurate. These factors include TGS' reliance on a cyclical industry and principal customers, TGS' ability to continue to expand markets for licensing of data, and TGS' ability to acquire and process data product at costs commensurate with profitability. Actual results may differ materially from those expected or projected in the forward-looking statements. TGS undertakes no responsibility or obligation to update or alter forward-looking statements for any reason.

Sven Børre Larsen

Sven Børre Larsen

Chief Financial Officer

Tel: +47 90 94 36 73

Ellen Munkvold

Ellen Munkvold

IR Coordinator

Tel: +47 97 76 26 25