Avient can help address these challenges with a customer-centric approach.

Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

Avient Corporation (NYSE: AVNT) 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

Our materials address strong consumer demands for enhanced safety, purity, and regulatory compliance. Sandy Wagner Marketing Communications Manager PolyOne Corporation +1 815-385-8500 sandy.wagner@avient.com Company Officers

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.

Avient’s EH&S Management System (EH&S MS) is managed by its Corporate Environmental, Health, Safety and Product Stewardship Department, and degreed technical experts employed in all regions and businesses. We established a comprehensive EH&S MS to systemically identify and address any risks. Discussion of corporate positions related to government regulations and/or policy proposals that address environmental and social factors affecting the industry

The event will include a presentation by president and chief executive officer Robert M. Media Contact: Kyle Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Company Officers

Our Transcend colorants help address all of these needs.” 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. Company Officers

PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contact Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

Avient Corporation (NYSE: AVNT) 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