Post-consumer recycled content as percentage of total plastic packaging volume, by weight E NA B L I N G T H E U S E O F R E C YC L E D C O N T EN T T O P 5 G A P S T H A T W E A R E A D D R E S S I N G 2) DECONTAMINATION1) COLOR MANAGEMENT 3) MAINTAINING MECHANICAL PROPERTIES 4) MONO-MATERIAL CONSTRUCTION 5) CONSISTENT RECYCLED MATERIAL QUALITY 9 G U I D I N G B R A N D S T O W H A T I S P O S S I B L E C A S E S T U DY W I T H B R A N D OW N E R Recycled ResinVirgin Resin 10 S U S TA I NA B I L I T Y F O R A B ET T E R TO M O R ROW 11 • Revenue from sustainable solutions expected to grow 18% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options 1111 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business 2016 2017 2018 2019 2020PF** 2021E $405M $455M $340M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $930M Q3 2020 $925 $74 Sustainable Solutions 35 19% 14 Healthcare 51 44% 10 Composites 13 39% 6 Growth in Asia / LATAM 14 11% 3 Other 177 39% 16 Sub-total $1,215 31% $123 Supply Chain Disruption Costs (19) COVID Response Applications (5) (3) FX Impact 10 2 Synergies 12 Incentives, Travel, Other Employee Costs (16) Q3 2021 $1,220 32% $99 Q3 2021 SALES AND OPERATING INCOME ( T O TA L C O M PA N Y ) 12 Sales Growth Rate Adjusted Operating Income$ millions 13 Q3 2020 Q3 2021 (1) Financial information is presented on a constant currency basis (1) (44% of total revenue) (56% of total revenue) Q3 END MARKET SALES PERFORMANCE +20% +31% +40% +24% +46% +40% +14% +33% Energy Telecom Building & Construction Transportation Industrial Healthcare Packaging Consumer Q3 YEAR-OVER-YEAR EBITDA BRIDGE 14 • Demand driven by growth in sustainable solutions, healthcare and consumer applications • Price increases more than offsets raw material and supply chain impacts • Synergy capture on pace to achieve $50M in annual savings in 2021 Q3 2020 $ 111 Demand 29 Adjusted EBITDA$ millions CAI: Price / Mix 51 Inflation (37) SEM: Price / Mix 25 Inflation (22) Distribution: Price / Mix 108 Inflation (103) Net Price Benefit 22 Supply Chain Disruption Costs (19) COVID Response Applications (3) Synergies 12 Incentives, FX, Other (16) Q3 2021 $ 136     15 • Price increases have more than covered raw material and freight inflation impacts of $300M year- to-date compared to 2020 • Demand impact driven by Q3 seasonality for the business Q2 TO Q3 SEQUENTIAL EBITDA BRIDGE Q2 2021 $ 159 CAI: Price / Mix 17 Inflation (8) SEM: Price / Mix 6 Inflation (5) Distribution: Price / Mix 35 Inflation (35) Net Price Benefit 10 Supply Chain Disruption Costs (4) Demand / Seasonality (35) Other 6 Q3 2021 $ 136 Adjusted EBITDA$ millions     F U L L Y E A R 2 0 2 1 O U T L O O K $308 $430 2020PF 2021E $1.93 $3.00 2020PF 2021E FULL YEAR GROWTH PROJECTIONS ( T O TA L C O M PA N Y ) 17 Sales Adjusted Operating Income $3,783 $4,750 2020PF 2021E + 26% Adjusted EPS + 40% + 55% (in millions) (in millions) (1) Financial information is pro forma to include a full year of Clariant Color acquisition (1)(1)(1) $1.74 $1.93 $3.00 2019PF 2020PF 2021E $442 $457 $580 2019PF 2020PF 2021E FULL YEAR 2019 – 2021 GROWTH ( T O TA L C O M PA N Y ) 18 Sales Adjusted EBITDA $3,981 $3,783 $4,750 2019PF 2020PF 2021E + 19% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Color acquisition (1) (1) (in millions) (in millions) (1)(1) + 31% + 72% (1) (1) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 40% 99% YTD 5 - YR 10 - YR 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 11 12 13 14 15 16 17 18 19 20 21 22 2.1x Q4 NET LEVERAGE ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$450MM PAID OVER LAST 11 YEARS C R E AT I N G VA LU E F O R SH A R E H O L D E R S 19 Share Performance Dividends Share Repurchases Deleveraging 3.5x 2.1x 2019PF 2021E Growing Dividend Cumulative Buybacks Net Leverage $ B n $ p e r sh a re Total Shareholder Return ~$4Bn MARKET CAP INCREASE OVER LAST 10 YEARS (1) Share performance includes reinvested dividends and is as of 10.25.2021 (2) Financial information is pro forma to include a full year of Clariant Color acquisition (1) (2) 494% 2 0 2 1 AV I E N T I N V E S TO R DAY 20 • Investor Day to be held December 9, 2021 in New York, NY • The company will be doing a deep dive into its key long- term growth drivers with a particular focus on sustainable solutions Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites / 5G 10% Growth in Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% • Senior leadership team will also provide further details on the Clariant Color integration, as well as capital allocation priorities PEER COMPARISONS 21 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from. D is t. ) K W R P P G A V Y F U L R P M G C P F M C H X L H U N E C L A S H E M N C E S C L Source: Peer data per Bloomberg market data as of October 25, 2021 Avient reflects 2021 estimated revenue of $4,750M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA H I G H F R E E C A S H F L OW C O N V E R S I O N Avient reflects 2021 estimated EBITDA of $580M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of October 25, 2021 86 92 85 82 79 77 74 89 83 82 80 79 79 78 78 72 33 A vi e n t K W R P P G A V Y F U L R P M G C P F M C U N V R C E H X L B N R A S H E C L E M N H U N S C L A L B (12) Source: Peer data per Bloomberg market data as of October 25, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the median of other selected chemical / specialty companies.

Static charges that build up on the surface of plastic products can attract dust and dirt, cause sheet and film to cling, and cause stacked products to stick together. This static buildup can then cause the resulting parts, film or sheet to cling to one another, or stick to the mold or tool.

THE CHALLENGE PVC sheet and profile extrusion processors were looking for ways to hit lower density targets while maintaining a high-quality cell structure. The result was lower production density with fewer voids in the extruded sheet or profile, leading to higher quality finished goods and a reduction in scrap rates.

Bob Patterson Chairman, President, and CEO February 2, 2022 SAFETY & HEALTH POLICY Avient Corporation believes that safety and health are the highest corporate priority. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Process Safety Management Practices to continuously guide our efforts to improve safety performance. Our practices reinforce these imperatives, and our commitment to excellence in safety and health is absolute.

Bob Patterson Chairman, President, and CEO August 1, 2020 SAFETY & HEALTH POLICY Avient Corporation believes safety and health are the highest corporate priority. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Process Safety Management Practices to guide our efforts in continuous improvement in safety performance. Our commitment to excellence in safety and health is absolute.

Microsoft Word - EHS Committee Charter (Amended July 2022).doc AVIENT CORPORATION ENVIRONMENTAL, HEALTH AND SAFETY COMMITTEE CHARTER Membership • Members of the Environmental, Health and Safety Committee (the “Committee”) of the Board of Directors (the “Board”) of Avient Corporation (the “Company”) will be appointed by the Board each year Duties and Responsibilities The Committee will: Assessment Process • Periodically review the results of formal assessments by management of the environmental liabilities for which the Company has known or probable environmental exposure and the adequacy of the Company’s financial reserves for environmental liabilities; • Semi-annually review the status of health and safety performance of the Company; • Semi-annually review the status of the Company’s product stewardship programs and performance; • Periodically review the Company’s staffing for its environmental, health and safety assessments and compliance; and 2 • Periodically review new environmental, physical security, health and safety laws and regulations applicable to the Company’s operations and issues or significant developments arising from pending regulatory and citizen group activities. Compliance Programs • At least annually review the programs and procedures established by the Company that monitor compliance with the Company’s policies, standards and practices, and laws and regulations with respect to safety, health, environmental, physical security and product stewardship, including providing oversight of the systems that are in place to monitor and mitigate the Company’s carbon footprint and physical risks associated with climate change; • Periodically review with management the significant safety, health, environmental, physical security, and product stewardship risks or exposures faced by the Company, if any, and steps taken by management to minimize such risks and exposures to the Company and its constituencies; • At least annually review the status of the Company’s environmental and safety audit process, assessing compliance with Company policies, standards, practices, laws and regulations; and • Periodically review claims, demands, administrative orders and legal proceedings against the Company regarding safety, health, environmental, physical security and product stewardship matters.

Name of topic C A R G O T R A I L E R M A N U FA C T U R E R T R A I L E R W A L L S & F L O O R • Replace metal sheet skin and framing on current trailer design • Reduce trailer weight and labor costs • Provide a reliable supply chain and quality control system • Provided an impact resistant and corrosion- proof composite material to prevent dents and rust • Reduced labor costs by delivering a customized three-layer composite with a polymer film to replace sheet metal and metal framing • Ensured supply chain reliability with fast delivery and quality control located in North America Polystrand™ APET Thermoplastic Composite Tri-ply Laminate KEY REQUIREMENTS WHY AVIENT?

A DV E N T U R E C A M P E R M A N U FAC T U R E R W A L L & F L O O R P A N E L S • Ability to customize the face sheet structure, core material, and thickness to meet performance requirements • Lightweight, high strength-to-weight ratio compared to wood and aluminum • UV, chemical, and moisture resistant • Custom formulated the panel construction to meet lightweight, durability, and insulation requirements • Avient engineering team provided on-going material sampling and technical support throughout the development cycle • Ensured the face sheet structure provided a smooth surface finish and good adherence to paint or aluminum fixtures Polystrand™ Thermoplastic Composite Sandwich Panels KEY REQUIREMENTS WHY AVIENT?

Source: https://pbipolymer.com/ https://www.engineering.com/3DPrinting/3DPrintingArticles/ArticleID/14465/3D-Printing-Filam https://www.engineering.com/3DPrinting/3DPrintingArticles/ArticleID/14465/3D-Printing-Filam https://pbipolymer.com/ Source: https://www.solvay.com/sites/g/files/srpend221/files/2018-11/Additive-Manufacturing-Filaments-Processing-Guide_EN-v1.1_0.pdf BRASS OR STEEL DIE? The metal used for FFF dies depends on the polymer: unfilled materials can use softer brass dies, while fiber-reinforced materials need harder steel to prevent premature wear.

The existing solution — reinforcing the latch area with a steel plate — added vehicle weight and involved additional manufacturing processes, increasing time and cost.  Boosting rPET Quality and Safety in Packaging Boosting rPET Quality and Safety in Packaging