a technology company with a product and services portfolio of personal systems, printers, and 3D printing solutions, since 2022. Wulfsohn 76 PROXY STATEMENT 2023 | Annual Meeting of Shareholders MISCELLANEOUS PROVISIONS INTERNET AVAILABILITY OF PROXY MATERIALS In accordance with rules and regulations adopted by the Securities and Exchange Commission, we may furnish proxy materials by providing internet access to those documents, instead of mailing a printed copy of our proxy materials to each shareholder. For business to be properly requested by a shareholder to be brought before the 2025 Annual Meeting, in addition to complying with the timeliness requirements set forth above, the shareholder must comply with all of the requirements of Regulation 8(c) or Regulation 12(b), as applicable, including, without limitation, with respect to the nomination of a director, a statement whether such shareholder intends to solicit the holders of shares representing at least 67% of the voting power of the Company's shares entitled to vote on the election of directors in support of director nominees other than Avient's nominees. 78 PROXY STATEMENT 2023 | Annual Meeting of Shareholders PROXY SOLICITATION Avient is making this proxy solicitation and will bear the expense of preparing, printing and mailing this notice and proxy statement.

HP"), a technology company with a product and services portfolio of personal systems, printers, and 3D printing solutions, since 2024. Wulfsohn PROXY STATEMENT 2025 | Annual Meeting of Shareholders 76 Miscellaneous Provisions Internet Availability of Proxy Materials In accordance with rules and regulations adopted by the Securities and Exchange Commission, we may furnish proxy materials by providing internet access to those documents, instead of mailing a printed copy of our proxy materials to each shareholder. PROXY STATEMENT 2025 | Annual Meeting of Shareholders 78 Proxy Solicitation Avient is making this proxy solicitation and will bear the expense of preparing, printing and mailing this notice and proxy statement.

Rutland is a leading producer of specialty inks and an innovator in textile screen printing solutions and services. On June 8, 2017, the Company completed the acquisition of Rutland Holding Company (Rutland), a leading producer of specialty inks and an innovator in textile screen printing solutions and services. Rutland is a leading producer of specialty inks and an innovator in textile screen printing solutions and services.

a technology company with a product and services portfolio of personal systems, printers, and 3D printing solutions, since 2022. Wulfsohn 76 PROXY STATEMENT 2023 | Annual Meeting of Shareholders MISCELLANEOUS PROVISIONS INTERNET AVAILABILITY OF PROXY MATERIALS In accordance with rules and regulations adopted by the Securities and Exchange Commission, we may furnish proxy materials by providing internet access to those documents, instead of mailing a printed copy of our proxy materials to each shareholder. For business to be properly requested by a shareholder to be brought before the 2025 Annual Meeting, in addition to complying with the timeliness requirements set forth above, the shareholder must comply with all of the requirements of Regulation 8(c) or Regulation 12(b), as applicable, including, without limitation, with respect to the nomination of a director, a statement whether such shareholder intends to solicit the holders of shares representing at least 67% of the voting power of the Company's shares entitled to vote on the election of directors in support of director nominees other than Avient's nominees. 78 PROXY STATEMENT 2023 | Annual Meeting of Shareholders PROXY SOLICITATION Avient is making this proxy solicitation and will bear the expense of preparing, printing and mailing this notice and proxy statement.

Zodiac™ Aquarius™ Water Based Screen Printing Inks Versaflex™ HC Thermoplastic Elastomers Example Products and Sustainable Outcomes Sustainability Report | 2020 42 https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/edgetek-ld https://www.polyone.com/products/polymer-additives/oxygen-scavengers/colormatrix-amosorb-low-haze https://www.fiber-line.com/en/processes/twisting https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-color-additive-concentrates https://www.avient.com/products/polymer-additives/processing-enhancement-additives/oncap-ctr-concentrates https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-joule-reheat-additive-pet https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/artisan-pre-colored-thermoplastics-paint-replacement https://www.avient.com/products/polymer-colorants/liquid-color-concentrates/hiformer-liquid-masterbatches https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-fx-special-effect https://www.avient.com/products/polymer-additives/performance-enhancement-additives/mevopur-functional-additives https://www.avient.com/products/polymer-additives/acetaldehyde-scavengers-pet/colormatrix-aazure-acetaldehyde-control-technology-pet https://www.avient.com/products/polymer-additives/acetaldehyde-scavengers-pet/colormatrix-aazure-acetaldehyde-control-technology-pet https://www.avient.com/products/polymer-additives/performance-enhancement-additives/cesa-ir-black-additives https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/nymax-pir-and-resound-r-nd-recycled-nylon-formulations https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-naturals-colorants https://www.avient.com/products/thermoplastic-elastomers/resound-om-thermoplastic-elastomers https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-bio-colorants https://www.avient.com/products/screen-printing-inks/zodiac-aquarius/aquarius-soft-base-ink What is a circular economy*?

ECCOH™ Low Smoke and Fume Non-Halogen Formulations Zodiac™ Aquarius™ Water Based Screen Printing Inks MagIQ™ Non-Woven Electret Plus Technology Example Products and Sustainable Outcomes Sustainability Report | 2019 41 https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/edgetek-ld https://www.avient.com/products/polymer-additives/processing-enhancement-additives/oncap-multi-purge-additives https://www.avient.com/products/polymer-additives/processing-enhancement-additives/oncap-ctr https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-joule-reheat-additive-pet https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-fx-special-effect https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ir-sortable-black-recyclable-packaging https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/nymax-pir-and-resound-r-nd-recycled-nylon-formulations https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-naturals-colorants https://www.avient.com/products/thermoplastic-elastomers/resound-om-thermoplastic-elastomers https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/screen-printing-inks/zodiac-aquarius/aquarius-soft-base-ink https://www.avient.com/products/fiber-solutions/magiq-fiber-additives/magiq-non-woven-electret-plus Enabling A Circular Economy Circular Economy Highlighted Solutions: ColorMatrix™ Amosorb™ Oxygen Scavenger for PET Creates an active barrier against oxygen ingress to help enhance product protection and extend shelf life.

Instructions for voting by telephone and over the Internet are printed on the proxy cards. Proxy Solicitation We are making this proxy solicitation and will bear the expense of preparing, printing and mailing this notice and proxy statement.

ECCOH™ Low Smoke and Fume Non-Halogen Formulations Zodiac™ Aquarius™ Water Based Screen Printing Inks MagIQ™ Non-Woven Electret Plus Technology Example Products and Sustainable Outcomes Sustainability Report | 2019 41 https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/edgetek-ld https://www.avient.com/products/polymer-additives/processing-enhancement-additives/oncap-multi-purge-additives https://www.avient.com/products/polymer-additives/processing-enhancement-additives/oncap-ctr https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-joule-reheat-additive-pet https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-fx-special-effect https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ir-sortable-black-recyclable-packaging https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/nymax-pir-and-resound-r-nd-recycled-nylon-formulations https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-naturals-colorants https://www.avient.com/products/thermoplastic-elastomers/resound-om-thermoplastic-elastomers https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/screen-printing-inks/zodiac-aquarius/aquarius-soft-base-ink https://www.avient.com/products/fiber-solutions/magiq-fiber-additives/magiq-non-woven-electret-plus Enabling A Circular Economy Circular Economy Highlighted Solutions: ColorMatrix™ Amosorb™ Oxygen Scavenger for PET Creates an active barrier against oxygen ingress to help enhance product protection and extend shelf life.

Instructions for voting by telephone and over the Internet are printed on the proxy cards. Proxy Solicitation We are making this proxy solicitation and will bear the expense of preparing, printing and mailing this notice and proxy statement.

Serve Customers Retain Employees Invest in Commercial Resources Capture Synergies Implement LSS to Drive Efficiency Improvements Cross-sell and Blend Technology Leverage PolyOne’s Global Reach Innovate with Combined Portfolio Sustainability Report | 2018 49 Over a Decade of Specialty Acquisitions Specialized soft touch elastomer materials enabling vibration damping and ergonomic benefits JAN 2008 2008 Advanced healthcare formulations for medical devices DEC 2009 2009 Deep portfolio of liquid color and additive solutions for sustainable packaging, including reduced material requirements and barrier technology DEC 2011 2011 Lightweight, high-strength composite technology enabling energy efficiency DEC 2012 2012 Liquid polymer formulations and specialty coatings solutions for a wide range of end markets DEC 2014 Thermoplastic elastomer solutions for products requiring sustainable performance attributes, such as medical, consumer and packaging FEB 2016 2014 Color solutions for fibers to eliminate post production dying, minimizing water intensity DEC 2015 2015 2016 Lightweight, high- strength composite technology for precision and performance JUL 2016 Thermoplastic composite solutions providing lightweighting, design and recycling advantages JUL 2016 Color masterbatch provider focused on high- temperature applications in demanding environments, including high efficiency engines DEC 2016A leading provider of specialty and eco- conscious inks for the screen-printing industry JUN 2017 2017 Silicone colorant and additive dispersions for healthcare and other specialty markets JAN 2017 Color and additive technologies for consumer, outdoor and packaging applications JUL 2017 2018 Europe-based innovator of color and additive solutions supporting customers’ high standards for design, functionality and performance JAN 2018 Thermoplastic composite technology with lightweighting, high-strength and recyclability benefits JUN 2018 Lightweighting composite technology that enables connectivity and infrastructure through fiber optic and 5G applications JAN 2019 2019 KRATON TPE Our Solutions…In Action  Case Studies in Sustainability   All of our work—from idea, to design, to R&D, and through to commercialization—culminates when our customer’s products are brought to market.