TGS ASA — Director's Dealing 2017

Mar 10, 2017

TGS - Mandatory Notification of Trade

TGS - Mandatory Notification of Trade

ASKER, NORWAY (09 March 2017) - Six primary insiders have on

9 March 2017 bought shares in TGS-NOPEC Geophysical Company

ASA ('TGS').

Kristian Johansen, CEO, has bought 9,500 shares in TGS at a

price of NOK 183.2026 per share. Following this

transaction, Mr Johansen holds 11,000 shares, 51,500 stock

options and 88,000 Performance Share Units in TGS.

Sven Børre Larsen, CFO, through his company Saturnia Invest

AS, has bought 3,000 shares in TGS at a price of NOK 185.990

per share. Following this transaction, Mr Larsen holds

3,600 shares and 52,000 Performance Share Units in TGS.

John Adamick, Senior VP Geological Products and Services,

has bought 2,500 shares in TGS at a price of NOK 185.6236

per share. Following this transaction, Mr Adamick holds

38,500 shares, 20,000 stock options and 38,000 Performance

Share Units in TGS.

Katja Akentieva, Senior VP Onshore, has bought 2,000 shares

in TGS at a price of NOK 183.8389 per share. Following this

transaction, Ms. Akentieva holds 2,000 shares, 10,100 stock

options and 38,000 Performance Share Units in TGS.

Will Ashby, VP HR & Communication, has bought 914 shares in

TGS at a price of NOK 183.8389 per share. Following this

transaction, Mr Ashby holds 1,414 shares, 1,800 Restricted

Share Units and 23,000 Performance Share Units in TGS.

Knut Agersborg, VP Operations, has bought 500 shares in TGS

at a price of NOK 185.000 per share. Following this

transaction, Mr Agersborg holds 3,700 shares, 31,000 stock

options and 35,000 Performance Share Units in TGS.

Attached is the list of primary insiders who bought TGS

shares today.

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

Email: will.ashby@tgs.com