Instructions on how to vote are found in the section entitled "Advance Voting Methods" in the Proxy Summary. Advance Voting Methods Even if you plan to attend and participate in our Annual Meeting, please cast your vote as soon as possible using one of the following advance voting methods: Visit www.proxyvote.com to vote your proxy over the internet until 11:59 p.m. Mink provides us with valuable counsel related to her chemical and advanced materials background.

Examples include: • Barrier technologies that preserve the shelf-life and quality of food, beverages, medicine and other perishable goods through high- performance materials that require less plastic • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation • Breakthrough technologies that minimize wastewater, improve the recyclability of materials and advance a circular economy • Composite solutions to support accelerated growth of 5G / fiber-optic infrastructure investment as the world demands greater and faster connectivity Avient employs approximately 8,400 associates and is certified ACC Responsible Care® and a founding member of the Alliance to End Plastic Waste. WHY AVIENT WINS Deep Customer Relationships & Application Know-How Superior Design Capabilities & Advanced Analytics Global Footprint Strategically Aligned to Serve Customers We iterate fast and often. 38 22 34 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia We produce locally, serve globally.

In advance of the Annual Meeting, please cast your vote through the internet, by telephone, or by mail. Instructions on how to vote are found in the section entitled "Advance Voting Methods" in the Proxy Summary. Mink provides us with valuable counsel related to her chemical and advanced materials background.

Our focus on people is advancing our Diversity & Inclusion commitment as well. Combined with the rooftop panels we installed in prior years, our Assesse facility now draws 80% of its required production energy from solar and wind sources. Our systems, networks and products may be vulnerable to advanced persistent threats or other types of system failures.

Our products include specialty engineered materials, performance fibers, advanced composites and color and additive systems. Our products include specialty engineered materials, performance fibers, advanced composites, and color and additive systems. Our products include specialty engineered materials, performance fibers, advanced composites, and color and additive systems.

If Seller determines that Buyer’s financial responsibility or status has become impaired or otherwise unsatisfactory to Seller, Seller at its discretion may require advance cash payments, COD, shorter terms, and/or the posting of satisfactory security by Buyer, and may withhold shipments. i) If Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer commits an act which if committed by a natural person would be an act of insolvency as defined in the Insolvency Act, 1936; or (iv) if steps are taken by tor by anyone else to place Buyer in liquidation, whether voluntary or compulsory, whether provisionally or finally or under business rescue proceedings; or (v) if Buyer proposes or enters into a compromise with its creditors generally; or (vi) if Buyer takes steps to deregister itself or is deregistered, and/or (vii) if Buyer suspends or ceases, or threatens to suspend or cease, to carry on all or a substantial part of its business; or (viii) in case of non-compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

PROXY SUMMARY VOTING AND MEETING INFORMATION Attendance and Participation Who is Eligible to Vote Shareholders of Record f fBeneficial Owners of Shares Held in Street Name Advance Voting Methods www.proxyvote.com OVER THE INTERNET BY TELEPHONE BY MAIL Each shareholder’s vote is important. Voting During the Annual Meeting Questions Company Operating Performance Our Company Culture The 4Ps of Sustainability at PolyOne People Our commitment to People, our “Human Capital”, has led to the creation and expansion of Employee Resource Groups (ERGs) at PolyOne to advance diversity and inclusion.

products include specialty engineered materials, advanced composites, color and additive systems and polymer distribution.

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

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