TGS - New Share Capital Registered

OSLO, Norway (11 October 2022) - Reference is made to the stock exchange
announcement today regarding the issuance of consideration shares under the
recommended voluntary exchange offer by TGS ASA to acquire all shares in Magseis
Fairfield ASA.

The share capital increase pertaining to the issuance of the 8,726,649
consideration shares has today been registered with the Norwegian Register of
Business Enterprises (Nw.: Foretaksregisteret). The new registered share capital
of TGS ASA is thus NOK 31,231,859.50, divided on 124,927,438 shares with a
nominal value of NOK 0.25 each.

Contact:
TGS: Sven Børre Larsen,
CFO Tel: +47 909 43 673
Email: investor@tgs.com

About TGS:
TGS provides scientific data and intelligence to companies active in the energy
sector. In addition to a global, extensive and diverse energy data library, TGS
offers specialized services such as advanced processing and analytics alongside
cloud-based data applications and solutions.