Complēt™ PKE Formulations Complēt™ PKE formulations are long glass fiber reinforced polyketone solutions for structural applications using metal today. They also offer over 2x higher impact properties than short fiber reinforced solutions, while maintaining impact properties in cold and demanding environments. KEY CHARACTERISTICS • Chemical resistance • Maintaining high impact performance at low temperatures • Low moisture uptake • Dimensional stability comparable to nylon • Higher impact resistance than short fiber alternatives • Eco-conscious alternative to nylons • More cost-effective solution than specialty nylons • Available in non-PFAS* formulations to achieve UL 94 V-0 flame rating at 1.5 mm MARKETS & APPLICATIONS These materials are for use in applications traditionally made of metal requiring moisture, chemical and cold impact performance requirements, including: • Industrial – pipes, tubing, fluid management • Electrical & Electronics – connectors, battery components, battery housings • Transportation – under-the-hood fuel/ chemical contact components, non-structural interior components • Oil & Gas – fuel pump components, fuel doors PRODUCT BULLETIN * Non-PFAS flame-retardant (FR) grades are manufactured without intentionally added PFAS-based raw materials.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 3 AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable materials solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.14B Revenue $2.36 $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow Over $1B in share buybacks since 2011 Raised dividend for 13 consecutive years, a 15% CAGR since 2011 U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 23% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 $51 $84 $212 $645 $108 $113 $231 $230 $265 $358 $726 $725 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile 5 Avient CDP Score: A- FE BRUARY 14 , 2024 W E BCAS T P RE S E N TAT I O N DR. ASHISH KHANDPUR PRESIDENT & CEO 7 8 PORTFOLIO TRANSFORMATION 8 46% 66% 87% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT D A Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications SUSTAINABILITY AS A GROWTH DRIVER 9 LONG-TERM REVENUE GROWTH DRIVERS Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other 60%+ Key Growth Drivers Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other 0–2% Avient 6% END MARKET OBSERVATIONS (% OF COMPANY SALES) ENERGY DEFENSE TELECOMMUNICATIONS HEALTHCARE 10 TRANSPORTATION INDUSTRIAL BUILDING & CONSTRUCTION 9% CONSUMER PACKAGING 23% 11 REGIONAL OBSERVATIONS (% OF COMPANY SALES) 11 Q 4 2023 RE S U LT S Q4 2023 PERFORMANCE VS.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 3 AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable materials solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.14B Revenue $2.36 $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow Over $1B in share buybacks since 2011 Raised dividend for 13 consecutive years, a 15% CAGR since 2011 U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 23% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 $51 $84 $212 $645 $108 $113 $231 $230 $265 $358 $726 $725 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile 5 Avient CDP Score: A- FE BRUARY 14 , 2024 W E BCAS T P RE S E N TAT I O N DR. ASHISH KHANDPUR PRESIDENT & CEO 7 8 PORTFOLIO TRANSFORMATION 8 46% 66% 87% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT D A Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications SUSTAINABILITY AS A GROWTH DRIVER 9 LONG-TERM REVENUE GROWTH DRIVERS Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other 60%+ Key Growth Drivers Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other 0–2% Avient 6% END MARKET OBSERVATIONS (% OF COMPANY SALES) ENERGY DEFENSE TELECOMMUNICATIONS HEALTHCARE 10 TRANSPORTATION INDUSTRIAL BUILDING & CONSTRUCTION 9% CONSUMER PACKAGING 23% 11 REGIONAL OBSERVATIONS (% OF COMPANY SALES) 11 Q 4 2023 RE S U LT S Q4 2023 PERFORMANCE VS.

AVNT-2023.03.31-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces First Quarter 2023 Results • First quarter sales of $846 million in line with guidance • GAAP EPS of $0.23 includes special items primarily related to restructuring costs as detailed in Attachment 3 • Adjusted EPS of $0.63 exceeded guidance of $0.55, driven by better-than-projected margins in both segments • Full year adjusted EBITDA and EPS guidance of $530 million and $2.40, respectively, maintained given present macroeconomic uncertainty • Sustainability Investor Day to be held on September 20th will highlight Avient’s sustainable solutions portfolio and growth opportunities CLEVELAND – May 3, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its first quarter 2023 results. This was partially driven by composites and sustainable solutions which are proving to be resilient in a challenging macroeconomic environment and improving our mix of higher margin applications.” 2 Mr. Patterson said, “We plan to host a live webcast to highlight current demand trends for sustainable solutions and how we help our customers reach their sustainability goals.

THE SOLUTION The company’s product management team reached out to Avient’s Gordon Composites group to identify an alternative spring solution.

GLS™ TPE INFANT CARE SOLUTIONS REGULATORY COMPLIANT MATERIALS FOR YOUR BABY CARE PRODUCTS GRADE PRODUCT HARDNESS REGULATORY COMPLIANCE* – FDA, EU, GB CL2242 Pacifiers Teething 43 Shore A FDA 177.1210 — — Versaflex™ CL2250 Pacifiers Teething 50 Shore A FDA 177.1210 — — Versaflex™ FFC 2882-87 87 Shore A FDA 177.2600 EU 10/2011 GB 9685-2008 FFC 2882-50 50 Shore A FDA 177.2600 EU 10/2011 — G2701C 66 Shore A FDA 177.2600 — — Dynaflex™ G6770 69 Shore A FDA 177.2600 EU 10/2011 GB 9685-2008 Dynaflex™ G2780C 84 Shore A FDA 177.2600 — — Dynaflex™ G7600 series 30A-80 Shore A FDA 177.1210 — — Dynalloy™ GP 7810 & 7820 Bathtubs Bibs Placemats 30A-70 Shore A General FDA — — We believe that the smallest consumers deserve the very best. So we’ve developed the ideal TPEs for your infant care application, from materials that are durable and safe for baby contact to regulatory compliant grades and soft-touch solutions

Cesa™ Flame Retardant Additives PTFE-free and Non-halogen for Polycarbonate Polycarbonate is a material of choice for E&E products as it provides very good impact strength, dimensional stability, and heat resistance.Some applications require the use of flame-retardant solutions to increase safety and ensure compliance with fire hazard standards. Provided in the form of additive concentrates, they can be combined with colors and other additives for a solution tailored to customers’ needs.

THE SOLUTION HIVIZ had several years of experience working with Avient materials for shotgun sights. CUSTOM RECOIL PAD MATERIALS DELIVER SUPERIOR RECOIL REDUCTION AND EXCEPTIONAL DURABILITY TO A HIGH-END RIFLE MANUFACTURER To learn more about customizable TPE solutions, contact Avient at +1.844.4AVIENT (1.844.428.4368) or visit www.avient.com

AN ALTERNATIVE FLAME RETARDANT SOLUTION FOR CATEGORY CABLES CASE STUDY: MAXXAM™ FR POLYPROPYLENE Challe nge Accepted. THE SOLUTION The manufacturer worked with Avient to identify alternatives to FEP insulation that would meet requirements in their data cable.

Gravi-Tech™ Density Modified Formulations PROCESSING GUIDE 2 Gravi-Tech GRAVI-TECH™ Density Modified Formulations Gravi-Tech™ polymer-metal composites are high-density materials developed as thermoplastic-based alternatives to lead and other traditional metals.