Stock Options Exercised


ASKER, NORWAY (15 August 2013) - Fourteen (14) employees of TGS-NOPEC Geophysical Company ASA have today, 15 August 2013, exercised in total 59,000 stock options. All options were exercised from the award in August 2009 secured by warrants at an exercise price of NOK 78.66 per share. Attached is a list of primary insiders exercising stock options.

Company summary
TGS-NOPEC Geophysical Company (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, permanent reservoir monitoring and data integration solutions.  For more information visit TGS online at www.tgs.com.

TGS-NOPEC Geophysical Company ASA is listed on the Oslo Stock Exchange (OSLO:TGS).

TGS sponsored American Depositary Shares trade on the U.S. over-the-counter market under the symbol "TGSGY".

This information is subject of the disclosure requirements pursuant to section 5-12 of the Norwegian Securities Trading Act.

Attachments

Primary Insiders Option Exercises August 2013

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