Compliance with Laws and Avient Supplier Code of Conduct 12.1 Avient is a member of two supply chain security programs: U.S. For all Goods supplied to the U.S. and/or Canada, Supplier shall comply with CTPAT supply chain security guidelines. In furtherance of the foregoing, we expect our suppliers to: supply only conflict free 3TG metals to Avient; engage in due diligence of supply chains by following a nationally or internationally recognized due diligence framework; upon request, report to Avient on its due diligence process and certify that 3TG metals supplied to Avient from the Covered Countries are conflict free; and promptly report to Avient any supply chain changes regarding the origin of 3TG metals or conflict status. 12.11 Supplier and Avient shall abide by the requirements of 41 C.F.R.

In recent years, Tier suppliers have proposed designs featuring colored textiles in locations typically filled with hard polymer surfaces.

This abundant supply includes thousands of tons of PVB, found in the inner layer of the glass, potentially bound for landfills. Avient’s unique formulation expertise allows the supply of reprocessed, high-quality, non-toxic PVB to be upcycled into more sustainable TPEs with excellent properties. About Avient

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Leadership (A/A-): Implementing current best practices Management (B/B-): Taking coordinated action on supplier engagement Awareness (C/C-): Knowledge of impacts of supplier engagement Disclosure (D/D-): Transparent about supplier engagement UNDERSTANDING YOUR SCORE REPORT Avient Region North America Country United States of America Questionnaire Chemicals Activity Group Trading, wholesale, distribution, rental & leasing CDP evaluates organizations engagement with their suppliers on climate change. By evaluating supplier engagement and recognizing best practice, CDP aims to accelerate global action on supply chain emissions. CDP SUPPLIER ENGAGEMENT RATING REPORT 2021 YOUR SER Average performance A- B- B- B- Trading, wholesale, distribution, rental & leasing North America Global Average CDP SUPPLIER ENGAGEMENT RATING REPORT 2021 CATEGORY SCORES Please download the ‘CDP Supplier Engagement Rating Introduction’ for more information on the category ratings.

Annual Savings from Energy Saving Activities (GJ) 1 Suppliers externally certified ISO14001 (% of surveyed)

An infusion pump manufacturer saves $175,000 with a material switch To get help in finding the best alternative material that could be produced faster and more efficiently, the manufacturer turned to Avient. That saved the company $70,000 a year in direct manufacturing costs.

Attachment 1 Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). 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. We are Avient.

Attachment 1 Special items (1) 1)