Microsoft Word - Avient Announces Registration Details for December 4th Investor Day _for Microsite 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for December 4th Investor Day CLEVELAND – November 4, 2024 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable materials solutions, will host an Investor Day for the investment community on Wednesday, December 4, 2024, beginning at 10:00 a.m. A webcast of the event can be also viewed live at www.avient.com/investors. 2 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.

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.

Avient Corporation 4 Obtain 40% of electricity demand from renewable sources. 100% of technology platform projects will deliver sustainable solutions. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 SUSTAINABILITY TARGETS Avient Corporation 5 PRODUCTS 8 W A Y S W E H E L P C U S T O M E R S B E M O R E S U S T A I N A B L E TRENDS IN FOCUS Avient Corporation 6 RECYCLING / CIRCULAR ECONOMY LIGHTWEIGHTING ECO-CONSCIOUS SUSTAINABLE SOLUTIONS FOR THE CIRCULAR ECONOMY Avient Corporation 7 OPTICA™ TONERS FOR PET LACTRA™ SX LIGHT BLOCKING ADDITIVE FOR PET AMOSORB™ OXYGEN SCAVENGER FOR PET JOULE™ & SMARTHEAT™ INFRARED ABSORBER ULTIMATE™ UV LIGHT BARRIER CESA®-NATUR BIO-SOURCED ADDITIVES TRIPLE A™ ACETALDEHYDE SCAVENGER FOR PET IR SORTABLE BLACK FOR RECYCLABLE PACKAGING EZE™ SLIP AGENT FOR PET ONCOLOR™ NATURALS – COLORANTS FOR RECYCLABLE PACKAGING RESOUND™ OM THERMOPLASTIC ELASTOMERS VERSAFLEX™ POST- CONSUMER RECYCLED (PCR) TPE FORMULATIONS AVIENT CYCLEWORKS I N N O V A T I O N C E N T E R T O A D V A N C E T H E C I R C U L A R E C O N O M Y • Laboratory mimics real-world circular recycling in a research environment • Conducts chemistry testing to improve plastics recycling for customers • Screening and evaluation of additive and colorant systems during recycling • Collaboration platform for customers and value chain partners Avient Corporation 8 Avient Corporation 9 AVIENT ENABLES CUSTOMERS’ CIRCULAR ECONOMY GOALS C O L O R M A T R I X ™ P R O C E S S A I D & T O N E R F O R R E C Y C L E D P E T LIGHTWEIGHTING Avient Corporation 10 NYMAX™ NYLON FORMULATIONS HYDROCEROL® CHEMICAL FOAMING AGENTS POLYSTRAND™ TAPES AND LAMINATES COMPLĒT™ LFT ENGINEERED RESINS W H AT ’S H AP P E N IN G AV IE N T S O LU T IO N S PLASTICS ARE: AVIENT SOLUTIONS ENABLE LIGHTWEIGHT DASHBOARD SKINS H Y D R O C E R O L ® F O A M I N G A G E N T S O L U T I O N S Avient Corporation 11 ECO-CONSCIOUS Avient Corporation 12 ONCOLOR™ BRILLIANT METALLIC COLORANTS W H AT ’S H AP P E N IN G ONCOLOR™ WPC CAPSTOCK TECHNOLOGY ZODIAC™ AQUARIUS™ WATER BASED SCREEN PRINTING INKS MAGIQ™ FIBER COLORANTS & ADDITIVES SAFER & CLEANER MATERIALS RESOURCE CONSERVATION HUMAN HEALTH & SAFETY ECO-CONSCIOUS ALTERNATIVES AV I E N T S O LU T IO N S AVIENT ECO-CONSCIOUS SOLUTIONS IMPROVE FACE MASK PERFORMANCE Avient Corporation 13 M A G I Q ™ E L E C T R E T P L U S T E C H N O L O G Y Improved filtration efficiency Protects against aerosols & bacteria particles Increased shelf-life ENERGY INTENSITY 9% WASTE INTENSITY 2% WATER INTENSITY 20% TOTAL CO2 EMISSIONS 29% PLANET K E Y P E R F O R M A N C E I N D I C A T O R S 2 0 1 6 - 2 0 1 9 56 ENERGY REDUCTION PROJECTS SAVE 7400+ MT/CO2 ANNUALLY PUNE, INDIAASSESSE, BELGIUM Avient Corporation 14 • Avient is a founding member • Cross value chain collaboration • Driving breakthrough innovations REVENUE FROM SUSTAINABLE SOLUTIONS 2016 2017 2018 2019 2020PF VOC Reduction Reduced Energy Use Bio-derived Content Eco-conscious Renewable Energy Applications Recyclability Reduced Material Requirements Lightweighting $275M $325M $355M $410M $560M (1) Proforma to include a full year of Clariant Masterbatch business acquisitionAvient Corporation 16 Revenue from sustainable solutions expected grow at an 8-12% CAGR into the future (1) THANK YOU Avient Corporation 17

Application Snapshot Smartbatch Frost SFX Final COSMETICS BRAND P E R S O N A L C A R E P E T & R P E T P A C K A G I N G • Solutions suitable for 100% rPET carrier colorants • Compatible with all ISBM molding machines • Should work with a wide variety of rPET grades • Worked with customer to provide a special effect solution that achieved a matte or frost- like effect in PET resin • Created a formulation that diffuses light and enhances bottle appearance, similar to edge- glass • Allowed the customer greater design freedom with a wide range of color options • Enabled customer to reduce VOC by eliminating bottle spraying SmartBatch™ Frost Collection KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION LEARN MORECopyright © 2022, Avient Corporation.

ECO-CONSCIOUS SOLUTION REMOVES HALOGENS FROM ELECTRICAL JUNCTION BOXES CASE STUDY: ONFLEX™ S HF THERMOPLASTIC ELASTOMERS Challe nge Accepted. THE SOLUTION The Schneider-Electric NB (Strömfors) design staff turned to Avient for help in selecting the right material. The non-halogenated solution has a density 0.4 g/cm3 less than a traditional halogenated material, and this density advantage makes it price competitive with the traditional solution

Stain-resistant Solutions for Synthetic Fibers and Nonwovens PRODUCT BULLETIN Stain-resistant solutions help extend the service life of textiles by promoting long-lasting cleanliness. The additive concentrates are also formulated to not interfere with over-dyeing, preserving the stain resistance effectiveness of bath- dyed and piece-dyed yarns and textiles containing our stain-resistant solution. APPLICATIONS Cesa stain-resistant solutions are suitable for polyester fibers used in automotive textiles, home and office furnishings, and carpets and rugs.

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.

KEY CHARACTERISTICS • Derived from end-of-life tires • Available for multiple resins and custom solutions • Retains performance characteristics of traditional carbon black in plastics • Enhances sustainable product offerings • Provides long-term price stability • Passes REACH and RoHS requirements • Prop 65 letters available MARKET AND APPLICATIONS OnColor RC Environmental Black is a sustainable solution across a wide variety of industries and applications, including: • Automotive • Wire and cable • Building and construction • Appliances • Electrical and electronics • Industrial molding applications • Office furniture Avient OnColor RC Environmental Black is offered for multiple resins and also for custom solutions: CC10289240WE OnColor RC Environmental Black PE CC10284887WE OnColor RC Environmental Black TPU CC10287020WE OnColor RC Environmental Black PC CC10287026WE OnColor RC Environmental Black PS CC10287028WE OnColor RC Environmental Black PP CC10287033WE OnColor RC Environmental Black ABS www.avient.com Copyright © 2020, Avient Corporation.

PREPERM™ Solutions for 5G The increased demand for data capacity and low latency and the growing volume of connected devices require more base stations and higher frequencies. The PREPERM™ portfolio offers a wide variety of dielectric constants and is the right solution for high-class 5G applications. PREPERM solutions enable faster, safer and more reliable connections—in antennas, lenses, screws or other RF parts