PGS ASA

Major Shareholding Notification • Apr 11, 2024

UBS Group AG Postfach 8098 Zürich Tel. +41-44-438 11 11

Global Shareholder Reporting Group Compliance, Regulatory & Governance

Nemanja Pantic Max-Högger-Strasse 80, 8048 Zurich Tel. +41-44-239 62 08 nemanja-n.pantic@ubs.com

www.ubs.com

Registered Strictly confidential

Oslo Børs Box 460 Sentrum 0105 Oslo Norway

April, 11 th 2024

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

Dear Sir or Madam,

We would like to inform you that UBS Group AG has crossed below 10% reportable threshold of the total voting rights and total share capital in the issuer PGS ASA (NO0010199151). Please let this serve you as our disclosure as set forth below:

Name of the person obliged to notify:	UBS Group AG
Residing at:	Bahnhofstrasse 45 CH-8001 Zurich
Date of event:	10th April 2024
Event triggering the notification:	Disposal of equity shares
Total new holding:	90,797,810 representing 9.50% of the 955,310,440 voting rights and of the share capital out of which 22,067,892 are held in shares equivalent to 2.31% and 68,729,918 equivalent to 7.19% held as 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, UBS Europe SE, Credit Suisse Funds AG.

This notification has also been sent to the issuer.

If you have any questions regarding this disclosure, please contact Sjoerd Sluimer on +41-44-235 11 50 in Zurich.

PGS ASA - Disclosure of large shareholdings April 11 th , 2024 Page 2 of 2

Yours faithfully,

UBS Group AG

Konstantina Georgaki Sjoerd Sluimer Director Authorized Officer