TGS: Mandatory notification of trade

Body: Oslo, Norway (9 February 2023) - Sven Børre Larsen, CFO, has today,
through Saturnia Invest AS, purchased 1,200 shares in TGS ASA at a price of NOK
180.9 per share.

This information is subject to the disclosure requirements in article 19 of the
Regulation EU 596/2014 (the EU Market Abuse Regulation) and section 5-12 of the
Norwegian Securities Trading Act.