Clariant Masterbatch performance will be included in this year’s report. 2021 Sustainalytics ESG Risk Ranking Newsweek Most Responsible Companies 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 9 (1) Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”)(2) 2020 is Pro forma to include full year of the Clariant Masterbatch business (2) Revenue from Sustainable Solutions 2016 – 2020 (1) 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 10 • Revenue from sustainable solutions expected to grow 11% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Relentless focus on delivering our 2030 sustainability targets to benefit the planet and people of the world while adding value to our customers, communities, associates and shareholders • Investments centered around innovation and global sustainability megatrends o Improving Recyclability – Technologies that allow for increased use of post-consumer recycled (PCR) material 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 o Avient CycleWorks – New innovation center dedicated to advancing recycling and the circular economy through collaboration with customers and brand owners Enable 100% of products manufactured for packaging applications to be recyclable or reusable.

Organic pigments used to produce yellow, red, blue and green colors are more likely to change color after prolonged residence time or high regrind levels.

W H AT W E D O : M AT E R I A L S C I E N C E 5 CUSTOM FORMULATION SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2021 $310 205 140 80 75 45 40 20 $915M2021 Sales ($ in millions) *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 Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 6 AVIENT ESG RATINGS Sustainalytics 2021 ESG Risk Ranking RANK (1st = lowest risk) PERCENTILE (1st – lowest risk) Chemicals INDUSTRY 75/449 17 th Specialty Chemicals SUBINDUSTRY 21/124 17 th ISS March 2022 ESG Scores SCORE (1 = Best, 10 = Worst) Environmental 2 Social 1 Governance 4 777 F I R S T Q U A R T E R 2 0 2 2 R E S U L T S $123 $136 2021 2022 $0.89 $0.99 2021 2022 Q1 2022 PERFORMANCE ( T O TA L C O M PA N Y ) 9 $1,162 $1,294 2021 2022 + 11% (+ 14% excluding FX) Adjusted EPS + 11% (+ 15% excluding FX) + 11% (+ 16% excluding FX) (in millions) (in millions) Sales Adjusted Operating Income Q1 2022 SEGMENT PERFORMANCE 10 CAI $609 $650 Sales ($ in millions) SEM Distribution $89 $95 Operating Income + 7% (+ 10% excluding FX) $363 $433 Sales $24 $24 Operating Income + 19% Flat (1) $217 $245 Sales $34 $40 Operating Income + 7% (+ 11% excluding FX) + 13% (+ 17% excluding FX) + 18% (+ 20% excluding FX) Q1 2021 $1,162 $123 Sustainable Solutions 19 8% 7 Healthcare 32 21% 6 Composites (excl.

Base Resin ABS PA PBT PC PE PEEK PP PPS Barrel Temperatures °F (°C) Rear Zone 400–475(200–250) 480–540 (248–282) 480–520 (250–270) 480–570 (250–300) 400–445 (200–230) 660–700 (350–475) 400–440 (200–225) 520–600 (270–300) Center Zone 410–480(205–253) 490–550 (254–287) 485–525 (251–273) 500–580 (260–305) 410–455 (207–237) 670–710 (357–385) 410–450 (205–230) 550–610 (285–310) Front Zone 420–490(210–257) 500–560 (260–293) 490–530 (254–276) 515–590 (267–310) 420–465 (213–243) 680–720 (363–400) 420–455 (215–235) 570–620 (300–320) Nozzle 425–500(215–260) 510–570 (265–298) 490–540 (254–282) 530–600 (275–315) 430–475 (220–250) 700–730 (370–395) 430–460 (220–240) 610–620 (320–325) Melt Temperature 425–515(215–270) 510–570 (265–298) 490–540 (254–282) 530–615 (275–325) 430–495 (220–260) 700–725 (370–385) 430–475 (220–250) 610–635 (320–335) Mold Temperature 140–200(60–90) 150–300 (65–148) 140–280 (60–137) 160–240 (70–115) 80–140 (25–60) 300–400 (150–200) 80–140 (25–60) 190–300 (90–150) Drying Parameters 190 (90) 2–4 Hours 0 .01%–0 .15% 180 (82) 4–5 Hours 0 .10%–0 .20% 275 (135) 3–4 Hours 0 .02%–0 .04% 250 (125) 3–4 Hours 0 .02% 160 (70) 2 Hours 300 (150) 3–4 Hours 0 .10% 160 (70) 2 Hours 280 (135) 2–3 Hours 0 .01%–0 .20% Nozzle Type General Purpose Nylon or Reverse Taper General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose Injection Velocity1 2–5 in/sec; 50–127 mm/sec Injection Pressure 1,000–2,000 psi; 7–14 Mpa Back Pressure 50–100 psi; 0 .3–0 .7 Mpa Screw Speed 25–75 RPM Cushion 0 .125–0 .250 in; 3–6 mm Screw Compression Ratio2 2 .0:1–2 .5:1 Comments 1 .

Eight ways we help customers meet their sustainability goals through material science: *Ellen Mac Ar thur Foundation criteria **Avient Sustainable Solutions definitions aligned with F TC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) ^2020 is Pro forma to include full year of the Clariant Masterbatch business 2016 2017 2018 2019 2020PF^ Revenue from Sustainable Solutions** 2016–2020 Lightweighting Recycle Solutions Eco-conscious Sustainable Infrastructure VOC Reduction Human Health & Safety Reduced Energy Use Bio-polymers $340M $405M $455M $550M $790M HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2020 39 https://www.ellenmacarthurfoundation.org/explore/the-circular-economy-in-detail Innovation: The Lifeblood of a Specialty Organization At Avient, our proven ability to innovate materials that enable our customers’ sustainability goals remains a key differentiator for our company. $340M $405M $455M $550M $790M HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2020 75 https://www.ftc.gov/policy/federal-register-notices/guides-use-environmental-marketing-claims-green-guides https://www.ftc.gov/policy/federal-register-notices/guides-use-environmental-marketing-claims-green-guides The Highest Ethical Standards At Avient, we strive to create a world-class sustainable organization, by conducting business in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs. Chief Technology Officer, Colgate-Palmolive Company Neil Green Executive Vice President and Chief Digital Officer, Otis Worldwide Corporation Kim Ann Mink, Ph.D Former Chairman, President and Chief Executive Officer, Innophos Holdings, Inc.

When a high percentage of regrind is used, or there is a prolonged residence time in the barrel, organic pigments (used to produce yellow, red, blue and green colors) are more likely to discolor. When a high percentage of regrind is used, or there is a prolonged residence time in the barrel, organic pigments (used to produce yellow, red, blue and green colors) are more likely to discolor.

Operating Income $3,783 $4,300 2020PF 2021E Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 2020PF 2021E $308 $410 2020PF 2021E $308 $430 2020PF 2021E $1.93 $2.80 2020PF 2021E $1.93 $3.00 2020PF 2021E (1) (1)(1) (1)(1) (1) (in millions) (in millions) $442 $457 $580 2019PF 2020PF 2021E $1.74 $1.93 $3.00 2019PF 2020PF 2021E FULL YEAR 2019 – 2021 ORGANIC GROWTH ( T O TA L C O M PA N Y ) 22 Sales Adjusted EBITDA $3,981 $3,783 $4,650 2019PF 2020PF 2021E + 17% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1) (1) (in millions) (in millions) (1)(1) + 31% + 72% (1) (1) ($ in millions) 2021E Adjusted EBITDA 580$ Free Cash Flow 280$ Total Debt 1,860 Less: Cash (755) Net Debt 1,105$ 2021E Net Debt / Adjusted EBITDA 1.9x 23 BA L A N C E S H E E T • Acquisition of Magna Colours completed on July 1 – expands sustainable solutions portfolio through water-based inks technology • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 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 24 • Revenue from sustainable solutions expected to grow 14% 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 24 2016 2017 2018 2019 2020PF** Bio-polymers Reduced Energy Use Human Health & Safety Sustainable Infrastructure VOC Reduction Recycle Solutions Eco-Conscious Lightweighting Revenue From Sustainable Solutions* 2016-2020 $405M $455M *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 Masterbatch business $340M $550M $790M 24 25 Key Updates • Includes Clariant Masterbatch performance • Increases disclosures and ESG data • Provides performance updates on 2030 Sustainability Goals • Commits to operational carbon neutrality in 2050 and 100% renewable energy by 2050 (RE 100) • Announces Avient’s participation in U.N.

SILCOPAS GREEN 84343 SILCOPAS GREEN 84441 SILCOPAS GREEN 85262

SILCOPAS GREEN 252 SILCOPAS GREEN 28192 SILCOPAS GREEN 28883

MC-22286PP GREEN MC-22559PE GREEN MC-22835PE GREEN