T H E N E W P O L Y O N E : A S P E C I A L T Y G R O W T H C O M P A N Y  Transformational M&A with PP&S divestment and pending acquisition of Clariant Masterbatch business  Growing leadership position in attractive markets  Innovation, technology and service are differentiators  Capital management is a strength: Record-setting cash generation to continue for years  Proven acquisition strategy with robust pipeline  Commercial investments are fueling momentum and generating organic growth SERVICE: T H E T I M E L E S S D I F F E R E N T I A T O R PolyOne Corporation 40 T A L E N T D E V E L O P M E N T PolyOne Corporation 41 Leadership Program Participants 2012 2013 2014 2015 47 0 86 2016 2019 125 169 412 Campus Hires 2008 2011 2014 2017 0 25 90 47 PolyOne LSS Blackbelts 2008 2011 2014 2019 0 67 247 147 2019 134 A U N I Q U E C U S T O M E R E X P E R I E N C E Industrial Design IQ DESIGN PolyOne Corporation 42 Computer Aided Engineering Design Strategy 3 15 2014 2019 Designers & Engineers $0 $15M 2014 2019 $4M $87M 2014 2019 Opportunity funnel Total Revenue LSS CUSTOMER FIRST PolyOne Corporation 43 Customer Engagements Enables sales growth by building more intimate customer relationships, giving us insight to customers’ needs, with a service that is not easily replicated 2014 2019 2 210 I N N O V A T I N G W I T H P O L Y O N E PolyOne Corporation 44 SEGMENT HIGHLIGHTS C O L O R , A D D I T I V E S & I N K S E N D M A R K E T S & S O L U T I O N S PolyOne Corporation 45 Solid Colorants Performance Additives Screen Printing Inks Liquid Colorants Packaging 31% Industrial 14% Textiles 13% Wire & Cable 10% Building & Construction 9% Consumer 8% Transportation 7% Healthcare 5% Appliances 2% Electrical & Electronics 1% Operating Income & MarginRevenue by Region C O L O R , A D D I T I V E S & I N K S 2 0 1 9 R E V E N U E | O V E R $ 1 B I L L I O N PolyOne Corporation 46 Europe 34% United States 44% Asia 15% Canada 1% Mexico 3% South America 3% $4 $25 $104 $147 2005 2009 2013 2019 0.9% 5.5% 12.2% 14.7% S P E C I A L T Y E N G I N E E R E D M A T E R I A L S E N D M A R K E T S & S O L U T I O N S PolyOne Corporation 47 Engineered Formulations Advanced Composites Thermoplastic Elastomers Wire & Cable 15% Telecommunications (FOC) 13% Consumer 19% Electrical & Electronics 12% Healthcare 9% Industrial 8% Packaging 6% Appliance 2% Building & Construction 2% Transportation 14% Note: (FOC) refers to Fiber Optic Cabling S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Revenue by Region Operating Income & Margin 2 0 1 9 R E V E N U E | $ 7 5 0 M I L L I O N PolyOne Corporation 48 Europe 27% United States 54% Asia 17% Canada 2% $21 $57 $87 2005 2009 2013 2019 0.1% 5.1% 9.3% 11.6% D I S T R I B U T I O N E N D M A R K E T S & S U P P L I E R S PolyOne Corporation 49 Healthcare 28% Transportation 23% Industrial 19% Consumer 12% Appliance 6% Electrical & Electronics 5% Building & Construction 4% Packaging 2% Wire & Cable 1% Operating Income & Margin2019 Revenue | $1.2 Billion $25 $63 $75 2005 2009 2013 2019 $20 2.9% 4.0% 5.9% 6.3% http://www.polyone.com/Pages/VariationRoot.aspx O V E R V I E W O F R A W M A T E R I A L P U R C H A S E S PolyOne Corporation 50 Performance Additives 15% Polyethylene 13% Pigments 9% Styrenic Block Copolymer 7% Nylon 7% TiO2 6% Polypropylene 5% Dyestuffs 4% Plasticizers 3% Other Raw Materials 31% $900 million of raw material purchases in 2019 excluding Distribution business Note: All figures exclude divested PP&S business T A R G E T E N D M A R K E T S & A P P L I C A T I O N E X A M P L E S PolyOne Corporation 51 Thermally Conductive Technologies Chemical Resistant Technologies Polymer Colorants Elastomeric Grips and Handles Structural Composites Antimicrobial Technologies Anti-Counterfeiting Technologies Target End Markets… Healthcare Catheter Technologies Under-hood Components Target End Markets… Automotive Interior Structural Components Sound & Vibration Management Roof Systems Air Management Electronics and Cameras Lighting Exterior / Interior Trim Braces & Brackets Fasteners Seals & Flaps Target End Markets… Consumer Thermally Conductive Components Polymer Colorants Elastomeric Grips and Handles Structural Composite Components Oxygen Scavenger Technologies Laser Marking Additives Antistatic Technologies UV Light Barrier Technologies Cap & Closure Colorants Process Optimization Technologies Antioxidant Technologies Density Modified Technologies Target End Markets… Packaging  Impart weight, sound and metallic finish to caps and closures for cosmetics and spirits applications  Elevate quality and prestige perceptions among high-end consumers  Eliminate time and cost associated with secondary operations and assembly Luxury Packaging GravitechTM Density Modified Polymers  Eliminate costs by increasing pigment density  Enhance color performance without altering form and formulation  Increase design capabilities by reducing weight and layer thickness Optimize Color Usage OnColorTM Super Concentrates  Inhibit microbial growth on polymer surfaces  Enhance value or products and devices  Highly versatile concentrate with the ability to be incorporated into a wide variety of products Combat Bacteria Formation WithStandTM Antimicrobial Technology  Durable, long-lasting products stand up to the most aggressive disinfectants  Minimize environmental stress cracking and discoloration  One of the broadest medically approved polymer and colorant portfolios Medical Device Housings Chemically Resistant Engineered Polymers Color & Design Services  Greater control of color development and supply chain  Work across entire design process from concept to commercialization  Inspire creativity in the use of polymer materials, colors, and effects  Innovative brand differentiation  Faster development timelines Outdoor Applications  Leading provider of high performance specialty materials for the recreational and sports & leisure industry  Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance  ColorMatrix Fiber Colorant Solutions  Proprietary advanced liquid color formulations and equipment enable greater efficiency and productivity  Eliminates aqueous dyeing and its associated wastewater treatment  Solid Color Concentrates  Extrusion-spun fibers colored via solid masterbatch Fiber Colorants PolyOne Corporation 63 Global high yield & leveraged finance Conference Forward Looking Statements USE OF �NON-GAAP�MEASURES Vision Safety First Commodity to Specialty Transformation PolyOne�2019 Revenue | $2.9 billion Slide Number 8 Sustainable Path to Double-Digit EPS Growth Expansion of Commercial Resources driving growth The Evolving Customer Relationship Slide Number 12 Aligning with trends for Growth Revenue from Sustainable Solutions Innovation 3 Horizons of Development Innovation Spotlight: Composites COMPOSITE MATERIALS COMPOSITEs Portfolio�Diverse Capabilities and Solutions Serving Manufacturers and OEMS PolyOne applications in Fiber optic cables Fiber optical growth drivers Invest-to-Grow M&A Strategy Invest-to-Grow M&A Playbook Invest-to-Grow Proof of performance Clariant Masterbatch Acquisition Drives�Next Level Specialty Transformation Transformation Headlines Fit with Four Pillar Strategy End Market Transformation End Market Transformation Complementary Geographic Presence Slide Number 31 PolyOne + Clariant Masterbatch Business Over 85% of Adjusted EBITDA from Specialty Transaction overview Significant Synergy Opportunities Attractive Financing Structure Slide Number 37 Returning cash to shareholders�Over $1.2 Billion since 2011 Why Invest In PolyOne?

a market leader in sustainable, water-based inks technology for the textile screen printing industry. 

HP"), a technology company with a product and services portfolio of personal systems, printers, and 3D printing solutions, since 2024. Wulfsohn EXECUTIVE COMPENSATION 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. MISCELLANEOUS 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.

Employee Name (Please print) Signature Date Work Location Table of Contents A Message from the CEO Our Code of Conduct Guidelines for Ethical Behavior Personal Values Your Responsibilities Additional Responsibilities of Avient Supervisors and Managers Resolving Questions and Reporting Non-Compliance Situations Ethics Hotline Non Retaliation Code of Conduct Application Violations of the Code Respect for All Diversity and Inclusion Discrimination or Harassment Workplace Relationships Substance Abuse Physical Security and Workplace Violence Honesty at Work Accurate Information, Data and Records Accounting Integrity Company Communications Safeguarding and Use of Assets Proprietary and Confidential Information, Ideas and Intellectual Property Privacy, Personal Information and Data Protection Internet and E-mail Use Social Media and Social Networking Computer Security, Software Licensing and Copyrights Insider Information and Trading Political Contributions / Activities and Charitable Contributions Government Investigations and Inquiries Integrity in Our Business Fair Dealing Bribery and Kickbacks Agents and Consultants Competition Gifts and Hospitality Conflicts of Interest Self-Dealing International Trade Money Laundering Corporate Social Responsibility Sustainability Safety, Health and Environment Product and Service Safety Respecting Human Rights A Shared Commitment Resources and Contact Information Our Policies Internal Contacts—Ethics and Compliance Resources Ethics Hotline

a technology company with a product and services portfolio of personal systems, printers, and 3D printing solutions, since 2022. Wulfsohn EXECUTIVE COMPENSATION 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. MISCELLANEOUS 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.

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 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 41 https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/edgetek-ld https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/complēt-long-fiber-reinforced-structural-thermoplastics https://www.avient.com/products/polymer-additives/oxygen-scavengers/colormatrix-amosorb-low-haze 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/engineered-polymer-formulations/flame-retardant-formulations/syncure-crosslinked-polyethylene-formulations https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles 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.

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 HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 41 https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/edgetek-ld https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/complēt-long-fiber-reinforced-structural-thermoplastics https://www.avient.com/products/polymer-additives/oxygen-scavengers/colormatrix-amosorb-low-haze 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/engineered-polymer-formulations/flame-retardant-formulations/syncure-crosslinked-polyethylene-formulations https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles 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.

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.