PGS ASA - Disclosure of large shareholdings under the Securities Trading Act

Name of the person obliged to notify: UBS Group AG

Residing at: Bahnhofstrasse 45 CH-8001 Zurich

Date of event: November, 7th 2023

Event triggering the notification: Acquisition of Financial Instruments.

Total new holding: 73’507’040 representing 7.69% of the 955’310’440 voting
rights and of the share capital out of which 49’269’996
equivalent to 5.16% are held through financial instruments.
The shares and financial instruments are held indirectly by UBS
Group AG and directly by its subsidiaries: UBS AG, UBS
Switzerland AG, UBS Asset Management (UK) Limited, UBS
Fund Management (Switzerland) AG.