TGS ASA — AGM Information 2017

Apr 12, 2017

TGS notice of Annual General Meeting

TGS notice of Annual General Meeting

ASKER, NORWAY (12 April 2017) - The 2017 annual general meeting of TGS-NOPEC

Geophysical Company ASA ("TGS" or the "Company") will be held on 9 May 2017 at

the offices of Schjødt law firm at Ruseløkkveien 16, in Oslo at 17:00 CET.

Registration of attendees will begin at 16:30 CET.

The notice for the annual general meeting is attached hereto (English and

Norwegian), together with relevant appendices. The notice will be sent to all

registered shareholders per 12 April 2017.

To register your attendance, send proxy or to cast your vote electronically in

advance through VPS Investor Services, please use the electronic link here and

available on www.tgs.com. The pin code and reference number, which are sent out

with the notice, will be needed. Kindly note that shareholders that have

received the notice electronically will not receive and do not need a pin code

or reference number, but must submit their notice of attendance, proxy or

advance votes through their online investor account services

(investortjenester).

Online registration will open on 12 April 2017 at 14:00 CET.

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, and data integration solutions.

For more information visit TGS online at www.tgs.com.

Forward-looking statements and contact information

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 principle customers, TGS'

ability to continue to expand markets for licensing of data, and TGS' ability to

acquire and process data products 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.

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".

For additional information about this press release please contact:

Sven Børre Larsen

Chief Financial Officer

Tel: +47 90 94 36 73

Email:sven.larsen@tgs.com

Will Ashby

VP HR & Communication

Tel: +1 713 860 2184

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Email: will.ashby@tgs.com

This information is subject to the disclosure requirements pursuant to section

5-12 of the Norwegian Securities Trading Act.