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.


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