Rosier S.A.

M&A Activity • Jun 10, 2022

Media Release Vienna, Austria 10 June 2022

Borealis intends to launch squeeze out offer for Rosier

Borealis AG (Borealis) intends to launch a squeeze-out offer for Rosier SA (Rosier) at a price of EUR 20 per share, in accordance with the Belgian Royal Decree on Public Squeeze-Out Offers.

The launch of the squeeze-out offer will be subject to obtaining the report of the independent expert stating the elements referred to in article 6 of the Royal Decree, and to the actual completion of the capital increase, for which the approval is on the agenda of the extraordinary shareholders' meeting on 16 June 2022. After the envisaged capital increase, Borealis would hold a stake of approximately 98% in the Company.

This communication is only the expression of an intention and does not constitute a formal notification of a squeeze-out offer within the meaning of the Royal Decree. If Borealis decides to formally launch such offer, it will deposit in due course a file with the Belgian Financial Services and Markets Authority (FSMA), including a draft prospectus.

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Media contact:

Virginia Wieser Senior Manager, Corporate Communications, Brand & Reputation tel.: +43 1 22 400 772 (Vienna, Austria) e-mail: media@borealisgroup.com

Investor relations:

Elisabeth Schopf Group Funding Manager Tel.: +43 1 22 400 707 (Vienna, Austria) e-mail: Elisabeth.Schopf@borealisgroup.com

Borealis is one of the world's leading providers of advanced and circular polyolefin solutions and a European market leader in base chemicals, fertilizers and the mechanical recycling of plastics. We leverage our polymers expertise and decades of experience to offer value adding, innovative and circular material solutions for key industries. In re-inventing for more sustainable living, we build on our commitment to safety, our people and excellence as we accelerate the transformation to a circular economy and expand our geographical footprint.

With head offices in Vienna, Austria, Borealis employs 6,900 employees and operates in over 120 countries. In 2021, Borealis generated total sales and other income of EUR 10,153 million and a net profit of EUR 1,396 million. OMV, the Austria-based international oil and gas company, owns 75% of Borealis, while the remaining 25% is owned by a holding company of the Abu-Dhabi based Mubadala. We supply services and products to

customers around the globe through Borealis and two important joint ventures: Borouge (with the Abu Dhabi National Oil Company, or ADNOC, based in UAE); and Baystar™ (with TotalEnergies, based in the US).

www.borealisgroup.com | www.borealiseverminds.com

Borealis AG | Trabrennstr. 6-8 | A-1020 Vienna | Austria Tel +43 1 22 4000 | Fax +43 1 22 400 333 www.borealisgroup.com | reg no FN 269858 a