TGS ASA — Board/Management Information 2015

May 27, 2015

TGS Names New CFO

TGS Names New CFO

ASKER, NORWAY (27 May 2015) - TGS is pleased to announce the appointment of Sven

Børre Larsen as the Company's new Chief Financial Officer.  The effective date

of Mr. Larsen's employment is yet to be determined, but will be no later than

December 1, 2015.  Mr. Larsen will be based in TGS' Asker office.

Most recently, Mr. Larsen was the Chief Financial Officer of Prosafe Management

AS in Norway, the world's leading owner and operator of accommodation support

vessels for the offshore oil and gas industry.  Mr. Larsen also has extensive

experience as a Financial Analyst in a broad range of industries including the

oil services sector.  A native of Norway, Mr. Larsen earned his undergraduate

and master's degrees at the University of Tromsø and the Bodø Graduate School of

Business.

Mr. Larsen replaces Kristian Johansen as CFO. Mr. Johansen's promotion to COO of

TGS was announced in December of 2014.  Mr Johansen will continue to also serve

as interim CFO until Mr. Larsen's date of employment.

In announcing the appointment, Robert Hobbs, Chief Executive Officer of TGS,

commented, "I am pleased to have Sven join our executive team.  He brings a

wealth of knowledge as a proven CFO of a successful oil and gas services

organization and I look forward to his contribution to TGS' continued success."

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 principal 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:

Kristian Johansen

COO/Interim CFO

Cell: +47 47 60 33 34

Email: kristian.johansen@tgs.com

Will Ashby

Director Finance Western Hemisphere & Investor Relations

Tel: +1 713 860 2184

Email: will.ashby@tgs.com

This information is subject of the disclosure requirements acc. to §5-12 vphl

(Norwegian Securities Trading Act)

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