You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. Unless otherwise stated, Operating Income, EBITDA and EPS figures included in this presentation are adjusted to exclude the impact of special items as defined in our quarterly earnings releases. $0.30 $0.52 2019 PF 2020 Q4 2020 ORGANIC PERFORMANCE 3 Sales $922 $997 2019 PF 2020 +8% Adjusted Operating Income Adjusted EPS $58 $80 2019 PF 2020 +38% +73% • Record 4th quarter sales, adjusted operating income and adjusted EPS performance • All segments delivered year-over-year sales and operating income growth, led by consumer and healthcare end markets • Clariant Masterbatch integration synergy capture ahead of schedule: $5 million realized in 2020 ($ in millions except EPS) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q4 2020 SEGMENT PERFORMANCE 4 Sales Operating Income $100 $100 $100 $922 $100 $100 $100 $997 Distribution CAI SEM Total 2019 2020 $178 $272 $490 $191 $305 $526 SEM Distribution CAI 2019PF 2020 +8% +7% +7% +12% $5 $5 $5 $58 $5 $5 $5 $80 Avient CAI SEM Total 2019 PF 2020 $17 $19 $40 $18 $30 $58 Distribution SEM CAI 2019PF 2020 +38% +45% +58% +6% (3) (3) ($ in millions) (1) (2) (1) Total company sales include intercompany sales eliminations (2) Total company reflects adjusted operating income and includes corporate costs (3) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 2020 HIGHLIGHTS 5 • Completed transformational Clariant Masterbatch acquisition and created new brand name Avient • Increased pro forma adjusted EPS 11% from $1.74 to $1.93 as an essential supplier during the pandemic and due to growth in demand for consumer applications • Specialty Engineered Materials delivered record operating income on gains from composites • Achieved record free cash flow, increased dividend for 10th year in a row and delevered from 3.5x to 2.7x net debt to pro forma adjusted EBITDA • Culture is everything: Certified as a Great Place to Work® $133 $150 2019PF 2020PF 10% 23%8% 21% 4% 15% 2006 2020PF Healthcare Consumer Packaging Avient Portfolio Transformation 22% 59% CLARIANT MASTERBATCH: TRANSFORMATIONAL ACQUISITION 6 Clariant MB EBITDA Growth Purchase Price Multiple 10.8 9.6 6.5 2019PF 2020PF 2020PF w/ Full Synergies x x x • Acquisition of Clariant Masterbatch significantly expands presence in healthcare, packaging and consumer end markets • Strength of portfolio – 13% EBITDA growth as an essential supplier in COVID response and recovery • Acquisition completed on July 1, 2020 for $1.4 billion. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 22 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Formulators Other Chemical/Specialty Companies 2 3 2 2 2 3 3 6 2 3 4 4 5 5 5 6 6 6 7 9 25 A vi en t A vi en t (E xc l.

% Pigment Specific Gravity Color Index Heat Stability Lightfastness System WHITE 10MB03 Titanium Dioxide, Rutile 60 1.74 PW-6 1 I/O SBR 10EP03 Titanium Dioxide, Rutile 60 2.33 PW-6 1 I/O EPDM YELLOW 12MB01 (a) Diarylide AAOT GS 48 1.23 PY-14 3 I SBR 12MB02 (a) Diarylide AAOA GS 50 1.15 PY-17 3 I SBR 12MB03 (a) Diarylide HR RS 50 1.16 PY-83 2 I/O (Mass) SBR 12MB09 (a) Diarylide AAA RS 50 1.21 PY-12 3 I SBR 12MB10 (a) Diarylide AAMX RS 30 1.22 PY-13 3 I SBR 13MB03 Benzimidazolone GS 50 1.15 PY-151 2 I/O (Mass) SBR 81MB01 (c) Iron Oxide 65 1.84 PY-42 2 C I/O SBR 12EP01 (a) Diarylide AAOT GS 47 1.16 PY-14 3 I EPDM 12EP03 (a) Diarylide HR RS 43 1.17 PY-83 2 I/O (Mass) EPDM 12EP09 (a) Diarylide AAA RS 47 1.14 PY-12 3 I EPDM 81EP01 Iron Oxide 65 1.78 PY-42 2 C I/O EPDM ORANGE 15MB01 Pyrazolone YS 23 1.23 PO-13 2 I/O (Mass) SBR 15MB05 Dianisdine RS 40 1.11 PO-16 3 I/O (Mass) SBR 15MB06 Benzimidazolone RS 50 1.18 PO-36 2 I/O SBR 15MB07 Benzimidazolone YS 50 1.19 PO-64 2 I/O SBR 15EP01 Pyrazolone YS 23 1.16 PO-13 2 I/O (Mass) EPDM 15EP05 Dianisdine RS 43 1.07 PO-16 3 I/O (Mass) EPDM RED 20MB01 (b) Red Lake C YS 50 1.27 PR-53:1 3 I SBR 22MB01 (b) Lithol Rubine BS 42 1.19 PR-57:1 3 I SBR 23MB06 Specialty Naphthol BS 50 1.11 PR-170 2 I/O (Mass) C SBR 23MB07 Specialty Naphthol YS 50 1.13 PR-170 2 I/O (Mass) C SBR 25MB12 Red 2B, Ca Salt BS 49 1.25 PR-48:2 2 I/O (Mass) SBR 26MB03 (c) Pyrazolone YS 41 1.09 PR-38 2 C I/O (Mass) SBR 28MB02 Red 2B, Ba Salt YS 50 1.38 PR-48:1 2 I/O (Mass) SBR 82MB01 (c) Iron Oxide, Light BS 60 1.68 PR-101 1 I/O SBR 82MB02 (c) Iron Oxide, Dark VBS 60 1.8 PR-101 1 I/O SBR 82MB04 (c) Iron Oxide, Light VYS 60 1.83 PR-101 1 I/O SBR 82MB05 (c) Iron Oxide, Light YS 60 1.84 PR-101 1 I/O SBR 20EP01 (b) Red Lake C YS 50 1.23 PR-53:1 3 I EPDM Stan-Tone Code Pigment Type Approx. % Pigment Specific Gravity Color Index Heat Stability Lightfastness System RED 23EP06 Specialty Naphthol BS 50 1.06 PR-170 2 I/O (Mass) C EPDM 25EP12 Red 2B, Ca Salt Bs 49 1.2 PR-48:2 2 I/O EPDM 26EP03 Pyrazolone YS 41 1.03 PR-38 2 C I/O EPDM 28EP02 Red 2B, Ba Salt YS 50 1.33 PR-48:1 2 I/O EPDM 82EP02 Iron Oxide, Dark VBS 59 1.7 PR-101 1 I/O EPDM 82EP04 Iron Oxide, Light VYS 60 1.73 PR-101 1 I/O EPDM BLUE 40MB05 (c) Phthalocyanine GS 48 1.19 PB-15:3 1 I/O SBR 40MB08 (c) Phthalocyanine RS 52 1.27 PB-15 1 I/O SBR 40MB10 (c) Phthalocyanine RS-NC 48 1.22 PB-15:1 1 I/O SBR 40MB02 Ultramarine 51 1.35 PB-29 1 I/O SBR 40EP05 Phthalocyanine GS 44 1.14 PB-15:3 1 I/O EPDM 40EP08 Phthalocyanine RS 49 1.23 PB-15 1 I/O EPDM 40EP10 Phthalocyanine RS-NC 48 1.11 PB-15:1 1 I/O EPDM 42EP02 Ultramarine GS 50 1.27 PB-29 1 I/O EPDM GREEN 50MB05 Blend (Yellow/Blue) 48 1.21 N/A 3 I SBR 51MB01 (c) Phthalo Brominated VYS 50 1.4 PG-36 1 I/O SBR 51MB03 (c) Phthalocyanine YS 47 1.34 PG-7 1 I/O SBR 51MB05 (c) Phthalocyanine BS 50 1.46 PG-7 1 I/O SBR 59MB01 Chromium Oxide 69 2.17 PG-17 1 I/O SBR 50EP05 Blend (Yellow/Blue) 48 1.16 N/A 3 I EPDM 51EP01 Phthalo Brominated VYS 44 1.37 PG-36 1 I/O EPDM 51EP03 Phthalocyanine YS 47 1.33 PG-7 1 I/O EPDM 51EP05 Phthalocyanine Bs 45 1.37 PG-7 1 I/O EPDM 59EP01 Chromium Oxide 71 2.12 PG-17 1 I/O EPDM VIOLET/MAGENTA 24MB03 Quinacridone Violet 30 1.06 PV-19 2 I/O SBR 24MB04 Ultramarine Violet 60 1.59 PV-15 1 I/O SBR 24MB06 Benzimidazolone 40 1.08 PV-32 2 I/O SBR 24MB07 Carbazole Violet 40 1.25 PV-23 2 I/O SBR 24EP03 Quinacridone Violet 31 1 PV-19 2 I/O EPDM 24EP07 Carbazole Violet 14 1.34 PV-23 2 I/O EPDM Stan-Tone Code Pigment Type Approx. % Pigment Specific Gravity Color Index Heat Stability Lightfastness System BROWN 83MB01 (c) Iron Oxide, Tan HR 60 1.78 PBr-11 1 I/O SBR 83MB02 (c) Iron Oxide, Light 68 2.1 PBr-6 2 C I/O SBR 83MB03 (c) Iron Oxide, Dark 60 1.83 PBr-6 2 C I/O SBR 83EP02 Iron Oxide, Light 69 1.98 PBr-6 2 C I/O EPDM 83EP03 Iron Oxide, Dark 69 1.98 PBr-6 2 C I/O EPDM BLACK 90MB01 (c) Furnace N-330 31 1.2 PBk-7 1 I/O SBR 90MB05 (c) Iron Oxide 60 1.8 PBk-11 2 C I/O SBR 90EP01 Furnace Black 33 1.05 PBk-7 1 I/O EPDM 90EP05 Iron Oxide 55 1.56 PBk-11 2 C I/O EPDM ALUMINUM 61MB01 Aluminum 70 1.5 PM-1 1 I/O SBR 61EP01 Aluminum 60 1.31 PM-1 1 I/O EPDM RS = Red Shade YS = Yellow Shade VYS = Very Yellow Shade BS = Blue Shade VBS = Very Blue Shade GS = Green Shade NC = Non-Crystallizing HR = Heat-Resistant (a) = Potential Migration at Low Use Levels (b) = Poor Alkali Resistance - Not Recommended for Open Steam Cure (c) = Six Month Shelf Life LIGHTFASTNESS I = Indoor Only I/O = Indoor or Outdoor Mass = Outdoor Masstone Application Only C = Some Caution Advised HEAT STABILITY 1 = Above 400°F 2 = 350°F–400°F 3 = Below 350°F C = Some Caution Advised 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

BASE RESIN ABS Drying Temperature 80–90°C Drying Time 2–3 Hours Barrel Temperatures °C Rear Zone 180–210 Center Zone 190–220 Front Zone 200–230 Nozzle 210–240 Mold Temperature 50–80 Screw Speed Moderate Back Pressure 3–10 bar Cushion 5–15 mm Injection Speed Low to medium Injection Pressure Moderate to high Holding Pressure 10–30% of injection pressure Screw Type General purpose Screw L/D 20:1 Screw Compression Ratio 2.0:1–2.5:1 Non-return Check Valve Free flow check ring Nozzle Type Reverse taper Barrel Capacity 30–80% of barrel should be used STARTUP & SHUTDOWN RECOMMENDATIONS Purge Compound 2–3 melt flow PP or purging compound. Sink Marks Melt too hot • Decrease nozzle and barrel temperatures • Decrease mold temperature Insufficient material volume • Adjust transfer position • Increase shot size • Increase injection rate • Increase packing pressure Part geometry too thick • Reduce wall thickness • Reduce rib thickness TROUBLESHOOTING RECOMMENDATIONS PROBLEM CAUSE SOLUTION Flash Injection pressure too high • Decrease injection pressure • Increase clamp pressure • Decrease injection rate • Increase transfer position Excess material volume • Adjust transfer position • Decrease pack pressure • Decrease shot size • Decrease injection rate Melt and/or mold temperature too hot • Decrease nozzle and barrel temperatures • Decrease mold temperature Loose clamp • Reset mold height • Increase clamp tonnage Shrink Too much shrink • Increase cooling time • Decrease mold temperature Too little shrink • Decrease cooling time • Increase mold temperature Burning Process related • Decrease nozzle and barrel temperatures • Decrease mold temperature • Decrease injection rate • Reduce decompression Mold design • Clean, widen and increase number of vents • Increase gate size to reduce shear Wet material • Verify material is dried at proper condition Nozzle Drool Nozzle temperature too hot • Decrease nozzle temperature • Decrease back pressure • Increase screw decompression • Verify material has been dried at proper conditions Incorrect nozzle • Use reverse taper tip Weld Lines Melt front temperatures are too low • Increase injection rate • Increase pack and hold pressure • Increase melt temperature • Increase mold temperature Mold design • Increase gate size • Identify end of fill pattern and verify proper vent location • Add vents or increase vent width • Move gate location TROUBLESHOOTING RECOMMENDATIONS PROBLEM CAUSE SOLUTION Warp Process related • Increase melt temperature • Reduce injection speed • Increase pack pressure • Increase pack time • Decrease mold temperature • Increase cool time Mold design • Non-uniform mold cooling Part design • Non-uniform wall thickness Thermolator incorrect temperature • Check settings • Inspect thermocouple Sticking in Mold Overfilled cavity • Decrease injection rate and pressure • Decrease hold pressure • Adjust transfer position • Decrease nozzle and barrel temperatures • Decrease mold temperature • Decrease cooling time Part too hot • Decrease barrel temperature • Decrease mold temperature • Increase cooling time Mold design • Increase draft angle • Polish cores in direction of ejection Black Specks Contamination • Purge machine Degradation • Reduce melt temperature • Reduce screw speed • Reduce back pressure Machine related • Check for wear on screw, barrel or check ring Delamination Process related • Increase melt temperature • Decrease injection speed • Purge barrel to eliminate material contamination Mold design • Reduce sharp corners in material flow path • Increase venting TROUBLESHOOTING RECOMMENDATIONS PROBLEM CAUSE SOLUTION Discoloration Oversheared material • Decrease melt temperature • Decrease injection speed • Reduce residence time Mold design • Increase gate sizing Dry material • Check moisture of material to ensure it is within the recommended moisture percentage for molding TROUBLESHOOTING RECOMMENDATIONS 1.844.4AVIENT www.avient.com Copyright © 2021, Avient Corporation.

F X ) -10% -11% -3% -12% 14 US & Canada Latin America EMEA Asia Avient ex. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20% Where Avient Wins:  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 17 DEFENSE Source: US Department of Defense, defense.gov, NATO17 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032 Where Avient Wins:  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 18 $130 $530 Q2 FY $0.60 $2.40 Q2 FY 2023 GUIDANCE 19 Sales Adjusted EBITDA $845 $3,400 Q2 FY Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 20 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 21 Sustainable Solutions 32% Asia / LATAM 15% Composites 8% Healthcare 6% Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 22 SUSTAINABILITY INVESTOR DAY 22 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 23 *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 ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation Healthcare • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction Consumer • Recycle Solutions • Light weighting • Carbon Footprint Packaging • Recycle Solutions • Light weighting • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 24 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 25 AP P EN D IX 28 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives 16% Pigments 12% TiO2 10% Dyestuffs 2% Polyethylene 11% Nylon 6% Polypropylene 5% Styrenic Block Copolymer 5% Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% EMEA 37% Asia 18% Latin America 5% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 20% Packaging 24% Industrial 15% Building and Construction 10% Telecommunications 4% Energy 4% Defense 6% END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) Transportation 9% Healthcare 8% 30 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 31 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 52% EMEA 35% Asia 13% REGION 32 Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% Packaging 32% Consumer 27% Healthcare 8% Industrial 14% Building & Construction 5% Telecommunications 3% Energy 1% Defense 1% Asia (18% of sales) Transportation 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET Packaging 27% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 10% Energy 5% Defense 8% EMEA (37% of sales)Transportation 11% Packaging 13% Consumer 24% Healthcare 12% Industrial 15% Building & Construction 13% Energy 5% Defense 5% US & Canada (40% of sales) Transportation 7% Packaging 56% Consumer 23% Healthcare 4% Industrial 7% Building & Construction 4% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% 33 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 35 3 2 3 3 4 4 3 3 5 5 5 6 7 9 A vi en t K W R P P G F U L R P M A V Y F M C H U N H X L C E E C L A S H E M N S C L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of April 28, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

AVIENT CORPORATION F I R S T Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) M AY 3 , 2 0 2 3 DISCLAIMER 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. F X ) -10% -11% -3% -12% 10 US & Canada Latin America EMEA Asia Avient ex. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20% Where Avient Wins:  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 13 DEFENSE Source: US Department of Defense, defense.gov, NATO13 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032 Where Avient Wins:  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 14 $130 $530 Q2 FY $0.60 $2.40 Q2 FY 2023 GUIDANCE 15 Sales Adjusted EBITDA $845 $3,400 Q2 FY Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 16 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 17 Sustainable Solutions 32% Asia / LATAM 15% Composites 8% Healthcare 6% Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 18 SUSTAINABILITY INVESTOR DAY 18 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 19 *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 ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation Healthcare • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction Consumer • Recycle Solutions • Light weighting • Carbon Footprint Packaging • Recycle Solutions • Light weighting • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 20 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 21 AP P EN D IX 24 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives 16% Pigments 12% TiO2 10% Dyestuffs 2% Polyethylene 11% Nylon 6% Polypropylene 5% Styrenic Block Copolymer 5% Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% EMEA 37% Asia 18% Latin America 5% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 20% Packaging 24% Industrial 15% Building and Construction 10% Telecommunications 4% Energy 4% Defense 6% END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) Transportation 9% Healthcare 8% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 27 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 52% EMEA 35% Asia 13% REGION 28 Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% Packaging 32% Consumer 27% Healthcare 8% Industrial 14% Building & Construction 5% Telecommunications 3% Energy 1% Defense 1% Asia (18% of sales) Transportation 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET Packaging 27% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 10% Energy 5% Defense 8% EMEA (37% of sales)Transportation 11% Packaging 13% Consumer 24% Healthcare 12% Industrial 15% Building & Construction 13% Energy 5% Defense 5% US & Canada (40% of sales) Transportation 7% Packaging 56% Consumer 23% Healthcare 4% Industrial 7% Building & Construction 4% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% 29 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 31 3 2 3 3 4 4 3 3 5 5 5 6 7 9 A vi en t K W R P P G F U L R P M A V Y F M C H U N H X L C E E C L A S H E M N S C L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of April 28, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

PolyOne Corporation Page 3 Use of Non-GAAP Measures  This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Kahler 3:00 Break 3:10 Performance Products and Solutions Michael A. Garratt 3:40 PolyOne Distribution Mark Crist 4:10 Financial Highlights and Goals Bradley C.

KEY CHARACTERISTICS Formulated with bio-based resin and/or 10–50% filler from renewable plant sources, Maxxam BIO formulations: • Reduce product carbon footprint • Achieve equivalent performance to standard polyolefin formulations • Provide good stiffness, durability, impact resistance and UV stability • Deliver good surface finish and are easy to color • Enable customized performance characteristics depending on application need • Offer food contact compliance MARKETS AND APPLICATIONS Maxxam BIO formulations are suitable for use across many industries and applications where traditional polyolefin materials are used, including: • Transportation Interior Applications - Decorative profiles, trunk side liners, pillars, T-cup • Industrial - Structural parts, furniture • Consumer - Household goods, personal care items, packaging, office supplies, food contact applications • Electrical and Electronic – Housings, buttons, junction boxes SUSTAINABILITY BENEFITS • Formulated with bio-based resin and/or 10–50% natural filler • Utilize natural filler from renewable plant sources including olive seed based powder and cellulose fiber • Offer a lower product carbon footprint compared to traditional petroleum-based feedstock • Can be recycled at end of life PRODUCT BULLETIN CHARACTERISTICS UNITS Maxxam BIO MX5200-5036 Natural FD Maxxam BIO MX5200-5030 Natural FD Maxxam BIO MX5200-5030 Natural FD X1 Maxxam BIO MX5200-5001 RS HS Natural Maxxam BIO MX5200-5033 RS HS Natural Maxxam BIO MX5200-5034 RS HS Natural Maxxam BIO MX5200-5035 RS HS Natural Filler/Reinforcement Unfilled Unfilled Unfilled 30% Glass Fiber 10% Mineral 20% Mineral 30% Mineral Density (ISO 1183) g/cm 0.90 0.90 0.90 1.12 0.96 1.03 1.12 Tensile Modulus (ISO 527-1) @ 23°C MPa 1500 1000 1000 6400 1350 1650 2100 Tensile Stress (ISO 527-2) @ 23°C MPa 27.0 20.0 20.0 75.0 13.0 14.0 15.0 Tensile Strain at Break (ISO 527-2) @ 23°C % 5 50 50 3.0 50 37 18 Charpy Notched (ISO 179) kJ/m 5 20 25 10 12 10 10 CHARACTERISTICS UNITS Maxxam BIO MX5200-5023 RS HS HI Natural 70 Maxxam BIO MX5200-5025 RS HS Natural 70 Maxxam BIO MX5200-5004 RS HS Natural 70 Maxxam BIO MX5200-5003 RS Natural 70 Maxxam BIO MX5200-5009 RS HS Natural 70 Maxxam BIO MX5200-5024 RS HS Natural 70 Maxxam BIO MX5200-5022 RS HS Natural 70 Filler/Reinforcement 15% Olive Seed Based 25% Olive Seed Based 30% Olive Seed Based/ 10% Mineral 35% Olive Seed Based/ 5% Mineral 15% Olive Seed Based/ 17% Glass Fiber/ Mineral 20% Olive Seed Based/ 20% Glass/ Mineral 10% Olive Seed Based/ 20% Mineral Density (ISO 1183) g/ccm 1.00 1.15 1.10 1.07 1.09 1.25 1.10 Tensile Modulus (ISO 527-1) @ 23°C MPa 1750 2000 2700 2500 3800 3500 4100 Tensile Stress at Break (ISO 527-2) @ 23°C MPa 21.0 20.0 30.0 20.0 40.0 35.0 42.0 Tensile Strain at Break (ISO 527-2) @ 23°C % 24 5 3 5 3 4 2 Notched Izod (ISO 180) kJ/m 15 7 3 2 5 15 7 MAXXAM BIO POLYOLEFINS – BIO-BASED RESIN – TECHNICAL PERFORMANCE MAXXAM BIO POLYOLEFINS – OLIVE SEED BASED FILLER – TECHNICAL PERFORMANCE CHARACTERISTICS UNITS Maxxam BIO MX5200-5029 NF HI UV Black X1 Maxxam BIO MX5200-5032 NFS UV Natural Maxxam BIO MX5200-5020 NF/NFS UV Natural X1​ Maxxam BIO MX5200-5016 NF Natural Filler/Reinforcement 10% Cellulose Fiber 20% Cellulose Fiber 30% Cellulose Fiber 40% Cellulose Fiber Density (ISO 1183) g/ccm 0.95 1.00 1.02 1.07 Tensile Modulus ISO 527-1) @ 23°C MPa 1550 1750 2640 3600 Tensile Stress at Break (ISO 527-2) @ 23°C MPa 33 30 48 55 Tensile Strain at Break (ISO 527-2) @ 23°C % 8 12 9 4 Charpy Notched Impact Strength (ISO 179/1eA) kJ/m2 5 6 5 5 Charpy Unnotched Impact Strength (ISO 179/1eU) kJ/m2 33 49 38 30 MAXXAM BIO POLYOLEFINS – CELLULOSE FIBER FILLER – TECHNICAL PERFORMANCE Copyright © 2023, Avient Corporation.

Homepage // News Center // ColorNow™ Digital Service from Avient Offers Immediate Color Matching and Streamlined Color Design Process Digitalization is changing and improving traditional business models, opening up enormous potential for innovation in our industry,” says Gustavo Haruki Kume, digital program leader of Color & Additives Asia at Avient. Avient’s ColorNow service overcomes essential challenges in digitalized color design.

Homepage // News Center // PolyOne Unveils Zodiac™ Aquarius Digital Hybrid Ink System at Impressions Expo Long Beach 2020 Zodiac Aquarius Digital Hybrid eco-conscious inks help printers achieve vibrant color yield and enhance durability Caption: PolyOne Specialty Inks is launching new Zodiac™ Aquarius Digital Hybrid System at ISS 2020.

TÍTULO DO ESTABELECIMENTO (NOME DE FANTASIA) ******** PORTE DEMAIS CÓDIGO E DESCRIÇÃO DA ATIVIDADE ECONÔMICA PRINCIPAL 20.29-1-00 - Fabricação de produtos químicos orgânicos não especificados anteriormente CÓDIGO E DESCRIÇÃO DAS ATIVIDADES ECONÔMICAS SECUNDÁRIAS 71.20-1-00 - Testes e análises técnicas 46.84-2-99 - Comércio atacadista de outros produtos químicos e petroquímicos não especificados anteriormente 82.11-3-00 - Serviços combinados de escritório e apoio administrativo CÓDIGO E DESCRIÇÃO DA NATUREZA JURÍDICA 206-2 - Sociedade Empresária Limitada LOGRADOURO AV DAS NACOES UNIDAS NÚMERO 18001 COMPLEMENTO ANDAR OITAVO ALA B PARTE CEP 04.795-100 BAIRRO/DISTRITO VILA ALMEIDA MUNICÍPIO SAO PAULO UF SP ENDEREÇO ELETRÔNICO EDUARDO.CARAMELO@CLARIANT.COM TELEFONE (11) 4745-8648/ (11) 5683-7918 ENTE FEDERATIVO RESPONSÁVEL (EFR) ***** SITUAÇÃO CADASTRAL ATIVA DATA DA SITUAÇÃO CADASTRAL 22/09/2015 MOTIVO DE SITUAÇÃO CADASTRAL SITUAÇÃO ESPECIAL ******** DATA DA SITUAÇÃO ESPECIAL ******** Aprovado pela Instrução Normativa RFB nº 1.863, de 27 de dezembro de 2018. Emitido no dia 16/04/2021 às 12:38:32 (data e hora de Brasília).