TGS ASA — Director's Dealing 2010

Nov 15, 2010

Mandatory Notification of Trade

Henry H. Hamilton III, Chairman, sold 400,000 shares

of TGS on Monday

15 November 2010 at a price of NOK 114.6946 per

share.

Following the transaction Mr. Hamilton holds

1,600,000 shares and 80,000 options.

This information is subject of the disclosure

requirements acc. to §5-12 vphl

(Norwegian Securities Trading Act)