Personal Values INTEG R IT Y R E SP ECT H O N E S T Y Core Values COLLABO R A T IO N E X C EL LE NCE INNOVATION OUR CULTURE 1 Annual Report | 2021 2 0 2 1 Dear Avient Shareholders, 2021 was our first full year as Avient Corporation. Polymers are a class of organic materials that are generally produced by converting natural gas or crude oil derivatives into monomers, such as ethylene, propylene, and styrene. Beggs, Senior Vice President and Chief Financial Officer 101 .INS** Inline XBRL Instance Document 101 .SCH** Inline XBRL Taxonomy Extension Schema Document 101 .CAL** Inline XBRL Taxonomy Extension Calculation Linkbase Document 101 .LAB** Inline XBRL Taxonomy Extension Label Linkbase Document 101 .PRE** Inline XBRL Taxonomy Extension Presentation Linkbase Document 101 .DEF** Inline XBRL Taxonomy Definition Linkbase Document 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) + Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the Registrant may be participants † Certain exhibits and schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K and will be provided to the Securities and Exchange Commission upon request. ** Filed herewith.

To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2171339. performance in prior periods without the effect of items that, by their nature, tend to obscure performance in prior periods without the effect of items that, by their nature, tend to obscure

Fortunately, we believe these to be short-term in nature and additional expenses related to them will approximate To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 97228054. performance in prior periods without the effect of items that, by their nature, tend to obscure

To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2587092. performance in prior periods without the effect of items that, by their nature, tend to obscure performance in prior periods without the effect of items that, by their nature, tend to obscure

To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 7899765. performance in prior periods without the effect of items that, by their nature, tend to obscure performance in prior periods without the effect of items that, by their nature, tend to obscure

Carbon fiber increases modulus more than glass or natural fibers and a composite with 50% fiber will be stiffer than one containing 30%. The viscoelastic nature of thermoplastic materials also aids in the absorption of energy instead of reflecting or transmitting it as vibrational or sound waves. Plastic radiolucent photoarticles are transparent to short wavelength radiation and appear nearly invisible on x-rays or during fluoroscopy procedures.

Natural gas, electricity, fuel and raw material costs could cause volatility in our results. Natural gas and raw materials costs represent a substantial part of our manufacturing costs. Richardson, Executive Vice President and Chief Financial Officer** 101 .INS XBRL Instance Document** 101 .SCH XBRL Taxonomy Extension Schema Document** 101 .CAL XBRL Taxonomy Extension Calculation Linkbase Document** 101 .LAB XBRL Taxonomy Extension Label Linkbase Document** 101 .PRE XBRL Taxonomy Extension Presentation Linkbase Document** 101 .DEF XBRL Taxonomy Definition Linkbase Document** + Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the Registrant may be participants † The exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K and will be provided to the Securities and Exchange Commission upon request. ** Filed herewith. 67POLYONE CORPORATION SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Colorant Chromatics™ X-Ray Opaque Formulations OnColor™ Naturals Colorants Naturally.