He's a trusted leader with our employees and an innovative, valued collaborator with our customers and suppliers." Investor contact: Eric Swanson, Director, Investor Relations, PolyOne Corporation, +1 440.930.1018, eric.swanson@avient.com; Media contact: Kyle Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440.930.3162, kyle.rose@avient.com Investor Contacts

Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 6 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. Geon(TM) MM559 LIGHT BLUE HOT MELT EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

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EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. MB2449B CLEAR HOT MELT EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. Geon(TM) V7047 RCV Neutral Hot Melt Plastis EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. STONE HOT MELT EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. Geon(TM) DB1587C Black UV FR High Melt EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. MB2434 NEUTRAL HOT MELT EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.

EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office. Geon(TM) MB2749 Clear Hot Melt EUROPE: SDS for Europe can be obtained by contacting the appropriate regional office.