Corporate seat Luxemburg Date of deed of incorporation 04-07-2018 Registered in Registre de Commerce et des sociétés Luxemburg, Luxembourg under number B226205 Company Trade name Avient S.à r.l., Netherlands branch Company start date 24-07-2018 Activities SBI-code: 46769 - Wholesale of other intermediary products SBI-code: 46696 - Wholesale of packaging SBI-code: 4941 - Freight transport by road (no removal services) Employees 0 Establishment Establishment number 000040405362 Trade name Avient S.à r.l., Netherlands branch Visiting address Uranusweg 3, 8938AJ Leeuwarden Date of incorporation 24-07-2018 Activities SBI-code: 46769 - Wholesale of other intermediary products SBI-code: 46696 - Wholesale of packaging SBI-code: 4941 - Freight transport by road (no removal services) For further information on activities, see Dutch extract. Employees 0 Board members Name Kronimus, Holger Hans Date of birth 26-01-1968 Date of entry into office 04-07-2018 Name Palm, Christoph Date of birth 16-05-1963 Date of entry into office 04-07-2018 This extract has been certified with a digital signature and is an official proof of registration in the Business Register. The Chamber of Commerce recommends that this document be viewed in digital form so that its integrity is safeguarded and the signature remains verifiable. 20 21 -1 2- 27 1 1: 24 :4 8 Name Potoczny, Zaneta Gabriela Date of birth 17-10-1974 Date of entry into office 27-02-2019 (registration date: 12-08-2019) Name Merklein, Norbert Date of birth 03-05-1964 Date of entry into office 18-01-2021 (registration date: 29-10-2021) Authorised representative Name Van den Brande, Philip Theophiel Anna Date of birth 13-08-1974 Date of entry into office 24-07-2018 Title Branch Manager Contents of power of attorney There are other restrictions.

No Content Detail 1 MERSIS number of the Company 0836003561100014 2 Title of the Company Polyone Tekno Polimer Mühendislik Plastikleri Sanayi ve Ticaret Anonim Şirketi 3 Registered office of the Company Orhan Gazi Mah.1683 Sk. No:8 Esenyurt/İstanbul 4 Committed and Paid Company Capital TRY 100,799,000.00 5 Full names of the Board members of the Company (in the event that a legal entity is a board member, that legal entity's MERSIS number, trade name, registered address and its individual representative's full name) • Holger Hans Kronimus • Christoph Palm • Zaneta Gabriela Potoczny 6 Independent auditor's title, registered address, and branch offices (if any). Title: Elit Bağımsız Denetim ve Yeminli Mali Müşavirlik Anonim Şirketi Address: Halaskargazi Cad.

About the Alliance to End Plastic Waste The Alliance to End Plastic Waste is an international nonprofit organization partnering with government, environmental and economic development NGOs and communities around the world to address the challenge to end plastic waste in the environment. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

CLEVELAND – April 14, 2023 – Today, Avient Corporation announced the launch of its newly upgraded, advanced computer-aided engineering (CAE) capabilities. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

Avient Corporation provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

About Avient Avient Corporation (NYSE: AVNT), with 2021 revenues of $4.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media Contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com    Company Officers

Addressing this need, Trilliant™ HC Healthcare Formulations series HC8910 and HC8920 are formulated to help OEMs deliver more durable medical devices and equipment while reducing the risk of potential mechanical failure caused by repeated disinfection. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

To address consumer OEM needs and help OEMs reach their sustainability goals, we’ve developed a new global product line produced in North America, Europe, and Asia, offering a more sustainable alternative to virgin TPE grades. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

This includes addressing major world crises and finding one’s happiness.  Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

Experts from Avient will be on hand to help wire and cable customers address the complex and demanding needs of solar, telecommunications and transportation applications with its unique portfolio of materials including low smoke and fume non-halogen (LSFOH) polymers, functional additives, colorants, engineered fibers and yarns. Media contact Nicole DeChant Avient Corporation Nicole.Dechant@Avient.com Company Officers