L E A D I N G B I OT E C H M A N U FAC T U R E R C O N D U C T I V E P I P E T T E T I P S • Accuracy of liquid measurements • Hydrophobic properties to minimize fluid retention • Concentric dimensional stability and warp resistance • High flow properties for multi-cavity molds • Offered consistent electrical conductivity to achieve repeatable part performance and minimize failures from inconsistent conductivity • Provided high flow grade with easy processing to improve efficiency and cost effectiveness • Achieved high stiffness and warp resistance, minimizing the rejection rate Trilliant™ HC Conductive Formulation KEY REQUIREMENTS WHY AVIENT?

TIER 1 AEROSPACE SUPPLIER S E A T I N G S T R U C T U R A L C O M P O N E N T • Reduce weight to improve fuel economy • Pass FAA flame, smoke, toxicity requirements • Meet structural requirements • Simplify manufacturing process • Lowered weight ~40% versus aluminum while maintaining the strength performance properties • Formulated a PES material to satisfy flame, smoke, toxicity (FST) standards for commercial aircraft • Passed and/or exceeded customer’s impact testing specifications • Provided an injection moldable hybrid glass/carbon fiber solution that enabled lower viscosity and better processability for thin wall parts Complēt™ Long Hybrid (Carbon + Glass) Fiber Reinforced PES Composite KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/long-fiber-technology/long-fiber-technologies/compl-t-long-fiber-reinforced-structural-thermoplastics

BA B Y B OT T L E M A N U FAC T U R E R I N F A N T M I L K B O T T L E S • Compliant with FDA food contact and China National Standard GB 9685 • Able to withstand repeated steam sterilization • Transparent for more pleasing appearance and easy identification of measurement lines • Good impact resistance • Developed formulation to comply with both FDA and GB 9685 • Provided material able to withstand repeated steam sterilization and maintain excellent mechanical performance • Achieved a more pleasing color and clarity to enhance measurement lines • Met the need for impact resistance Colorant Chromatics™ PPSU Precolor KEY REQUIREMENTS WHY AVIENT?

G L O B A L E L A S T I C & R U B B E R P R O D U C T M A N U FA C T U R E R T O U R N I Q U E T B A N D • Hardness 45, shore A • Thickness 0.5mm and Tensile set

AU TO M O T I V E C O M P O N E N T S M A N U FA C T U R E R O U T S I D E R E A R - V I E W M I R R O R G A S K E T • Black materials with hardness 60 and shore A • UV Stabilized • Overmouldable on to PP • ROHS Compliant • Customer specified material • Utilized global reach to translate customer approved solution from Europe to India • Reduced development time as material was already qualified in Europe • Reduced import/export costs • Enabled Indian business to specify Avient as a preferred supplier Custom GLS™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?

S A F E T Y M AT M A N U FAC T U R E R P R E S S U R E - S E N S I T I V E S W I T C H M A T S • Broad range of hardness and durability • Availability of custom colors • Long-lasting material for use in high-traffic areas including amusement park rides and workstations • Moisture and abrasion resistance • Provided durable plastisol solutions with needed hardness for specific applications • Offered customized colors to meet brand and product specifications • Supplied a solution giving added protection against moisture intrusion • Incorporated antimicrobial additives to resist mold growth CORE™ Vinyl Plastisols KEY REQUIREMENTS WHY AVIENT?

GLS TPE - Bayer Cap - Spanish BAYER® T A P A S O B R E - M O L D E A D A C O N E L A S T Ó M E R O T E R M O P L Á S T I C O ( T P E ) • Fácil de sujetar y abrir • Requerimientos de diseño: • Logotipo en relieve • Color específico de la marca • Optimiza el espacio en los estantes y reduce el embalaje • Funcionalidad de embalaje mejorada, tanto para el usuario (diseño ergonómico) como en el estante (mejor apilamiento y menos embalaje) • Se ofreció una formulación de valor agregado que permitió al cliente ampliar la diferenciación de la marca en el mercado Elastómero termoplástico GLS™ REQUERIMIENTOS CLAVE ¿POR QUÉ AVIENT?

TPE-1A, -1B Tensile Properties 0 2.5 5 T en si le s tr en g th , M o d u lu s (M P a) 7 days at RT 7 days at 70C T e ns ile S t re ngt h 3 0 0 % m o d. T e ns ile S t re ngt h 3 0 0 % m o d. T P E - 1A T P E - 1A T P E - 1B T P E - 1B 4.1 4.2 2.5 2.3 5.2 5.5 3.2 3.3 TPE-1A, -1B Tensile Properties 0 500 E lo ng at io n at b re ak (% ) 7 days at RT 7 days at 70C TPE-1A TPE-1B 574 569 564 546 TPE-1A, -1B Tensile Properties 0 10 20 Te ar s tr en gt h (N /m m ) 7 days at RT 7 days at 70C TPE-1A TPE-1B 22.6 20.2 21.5 21.5

Avient corporation first quarter 2023 results AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) F E B R U A R Y 2 0 2 4 D I S C L A I M E R Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Continue fostering our Great Place to Work® culture Strategic Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 2016 2018 2020 2023 $51 $84 $212 $645 2016 2018 2020 2023 $108 $113 $231 $230 2016 2018 2020 2023 $265 $358 $726 $725 2016 2018 2020 2023 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 Adjusted EPS TOP -T IE R S US TAINABIL IT Y P E RF ORM ANCE AND RE COGNIT ION Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile 5 Avient CDP Score: A- F E B R U A R Y 1 4 , 2 0 2 4 W E B C A S T P R E S E N T AT I O N DR. GUIDANCE ( T O TA L C O M PA N Y ) 13 $710 $719 Guidance Actual $112 $114 Guidance Actual Sales Adjusted EBITDA (in millions) $0.47 $0.52 Guidance Actual Adjusted EPS (in millions) 13.5% 15.9% 2022 2023 Results vs.

Microsoft PowerPoint - AVNT Nov 2022 Earnings Presentation AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) D E C E M B E R 2 0 2 2 AVI ENT: WHO WE A RE 40 23 9 36 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 9,300+ employees 100+ manufacturing plants Key Financial Data 2022PF Sales $3.6 billion 2022PF EBITDA $585 million 2022PF EPS $2.95 100% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 2 Guidance as of November 2, 2022 Webcast W H O W E A R E – V I S I O N , S T R AT E G Y, C U LT U R E 3 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. EBITDA Margins (1) • Focus on organic growth combined with transformative and bolt-on acquisitions • Divested commodity businesses tied to more cyclical end markets • Expanded presence in high growth areas of sustainable solutions, specialty healthcare applications, composites and more resilient end markets 5.4% 11.5% 16.1% 2006 2018 2022PF $142 $408 $585 2006 2018 2022PF 2006 figures exclude joint venture results 19 RETURNING CASH TO SHAREHOLDERS Growing Dividend 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 22 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 0.99 11 12 13 14 15 16 17 18 19 20 21 22 23 ~$1Bn REPURCHASED OVER LAST 11 YEARS ~$550MM PAID OVER LAST 11 YEARS Dividends Share Repurchases Cumulative Buybacks $ B n $ p e r sh a re $2.95 2022 PRO FORMA ADJUSTED EPS Earnings Growth Expanding Profitability $0.15 $1.09 $2.08 $2.67 $2.95 2009 2012 2015 2018 2022PF T H I R D Q U A R T E R 2 0 2 2 R E S U L T S $110 $119 2021 2022 $0.61 $0.59 2021 2022 Q3 2022 PERFORMANCE ( T O TA L C O M PA N Y C O N T. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M (1) Transportation 9% Healthcare 8% 29 C O L O R , A D D I T I V E S & I N K S 2 0 2 2 R E V E N U E | $ 2 . 3 B I L L I O N US & Canada 35% EMEA 40% Asia 20% Latin America 5% END MARKET REGION 30 Packaging 33% Consumer 22% Healthcare 9% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 1% Figures represent 2022 full year estimates 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 2 0 2 2 P R O F O R M A R E V E N U E | $ 1 . 3 B I L L I O N END MARKET US & Canada 50% EMEA 35% Asia 15% REGION 31 Figures represent 2022 full year estimates Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% Packaging 31% Consumer 28% Healthcare 8% Industrial 13% Building & Construction 5% Telecommunications 3% Energy 2% Defense 1% Asia (20% of sales) Transportation 9% 2 0 2 2 P R O F O R M A AV I E N T R E G I O N A L S A L E S B Y E N D M A R K E T Packaging 29% Consumer 13% Healthcare 5% Industrial 17% Building & Construction 11% Energy 5% Defense 7% EMEA (35% of sales) Transportation 10% Packaging 14% Consumer 23% Healthcare 11% Industrial 15% Building & Construction 12% Energy 5% Defense 7% US & Canada (40% of sales) Transportation 7% Packaging 49% Consumer 22% Healthcare 8% Industrial 9% Building & Construction 6% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% Figures represent 2022 full year estimates32