Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

EBITDA Margins • 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 14 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 ar e 2022 PRO FORMA ADJUSTED EPS Earnings Growth Expanding Profitability $0.15 $1.09 $2.08 $2.67 2009 2012 2015 2018 2022PF T H IR D Q UART ER 2022 RE S U LTS $110 $119 $0.61 $0.59 Q3 2022 PERFORMANCE (TOTAL COMPANY CONT. OPS) 16 Sales Adjusted EBITDA $818 $823 + 1% Adjusted EPS + 8% - 3% (in millions) (in millions) (+ 9% excluding FX) (+ 18% excluding FX) (+ 5% excluding FX) Q3 EBITDA BRIDGE (PRO FORMA TOTAL COMPANY) 17 Price increases more than offset raw material and supply chain impacts $ millions CAI: Price / Mix 68 Inflation (44) SEM: Price / Mix 41 Inflation (26) Net Price Benefit 39 Wage and Energy Inflation (14) Clariant Color Integration Synergies 6 Incentives, Other Employee Costs 14 FX (11) Q3 2022 $137   Adjusted Q3 2021 $ 142 Demand (39) Q3 2022 SEGMENT PERFORMANCE 18 CAI $587 $566 Sales $93 $93 SEM Pro Forma $326 $319 Sales $70 $62 (+ 4% excluding FX) - 4% - 2% (+ 5% excluding FX) Flat (+ 7% excluding FX) - 11% (- 7% excluding FX) $500 $585 $2.60 $2.95 FULL YEAR 2022 GUIDANCE 19 Sales Adjusted EBITDA $3,375 $3,635 Adjusted EPS (in millions) (in millions) 20 SUMMARY • Executed the plans we laid out earlier this year • Completed the Dyneema acquisition and Distribution divestiture amid challenging market conditions • Paid down debt and expect to finish the year modestly levered at 3.1x net debt to 2022 pro forma adjusted EBITDA • Expect $200 million of free cash flow in 2022 • Entering an economic slowdown with a portfolio that is better positioned than ever before • Updated our EPS guidance to $2.60 from continuing operations SEGMENT DATA U.S. & Canada Latin America 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 21% Building and END MARKET REVENUE (1) Total company adjusted EBITDA of $585M includes corporate costs. Sales EBITDA Specialty Engineered Materials Color Additives and Inks $585M$3,635M 23 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .3 B ILL ION US & Canada Latin America END MARKET REGION 24 33% Building & 1% Energy Figures represent 2022 full year estimates 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 50% REGION 25 Figures represent 2022 full year estimates 19% 8%Industrial 16% Building & 31% 28% 13% Building & 3% 2% Defense (20% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 29% 13% 17% Building & (35% of sales) 14% Building & 12% US & Canada (40% of sales) 49% Building & LATAM (5% of sales) 3%Telecommunications Figures represent 2022 full year estimates 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.

Global Compact • Highlights ESG Performance, including ratings, awards, and certifications • Features increased carbon emissions disclosures, including Climate Change Scenario Analysis and Scope 3 emissions data • Outlines Sustainable Supplier Program, designed to enable supplier evaluation & collaboration • Reflects Great Place To Work® culture focused on safety, employee engagement and advancing diversity, equity and inclusion 2022 SUSTAINABILITY REPORT 15 Avient Confidential 16 • Virtual presentation to be held September 20, 2023 • Leadership will be conducting an investor-focused presentation around our sustainable solutions portfolio • Deep dive into how we enable customers to achieve their sustainability goals SUSTAINABILITY DAY 16 …are Growing at Twice the Rate as Conventional Products Sustainably-Branded Products… STAKEHOLDER INFLUENCE DRIVES DEMAND Consumers Are demanding recyclability and eco- conscious products Governments Are mandating changes through legislation, taxes, and regional accords Brand Owners Have committed to ambitious goals to achieve sustainability metrics 17 AP P EN D IX 20 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,280 and estimated run-rate CAPEX of $110M. 22 3 2 3 3 4 4 3 3 4 5 5 7 8 8 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 23 79 90 84 83 76 73 88 82 77 74 72 67 57 20 Avient Specialty Other Specialty / MULTIPLE EXPANSION Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $40.93. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 24 EV / 2023E EBITDA Historic Multiple 6.5 8.3 10.3 14.4 13.6 13.6 12.4 9.0 20.2 18.2 11.5 10.6 9.7 9.6 8.7 8.3 01 1) 01 8) 02 3) Avient Specialty Other Specialty / SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 20% 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 B ILL ION 34% 38% 20% END MARKET REGION 27 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 B ILL ION 52% 35% 28 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 29 BY END MARKET 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.

Purchase price multiple rapidly declining on strength of business and synergy capture (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 7 SEM • Composites and Outdoor High Performance applications drove positive mix within SEM • Clariant Masterbatch synergy realization under way and expected to drive further margin expansion in 2021 • Portfolio transformation to high growth end markets with focus on sustainable solutions megatrend 10.1% 11.8% EBITDA MARGIN EXPANSION Distribution 6.3% 6.0% 15.2% 17.6% 11.1% 12.1% 14.5% 19.8% 13.5% 16.1% 6.4% 6.3% 15.2% 16.2% Full YearQ4 (2) (2) Total company reflects adjusted EBITDA margins SPOTLIGHT: COMPOSITES 8 • SEM delivers a record year in 2020 – 13% operating income growth and over 200 bps in margin expansion year-over-year • Prior investments in composites platform and outdoor high performance applications paying off, resulting in substantial growth over the last two years SEM Operating Income (OI % of Sales) $(0.1) $(1.0) $2.2 $19.1 $26.8 2016 2017 2018 2019 2020 Composites Performance (Operating Income) $83.7 $94.4 2019 2020 (11.2%) (13.3%) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 11 12 13 14 15 16 17 18 19 20 $19 $160 $338 2011 2019 2020 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 11 12 13 14 15 16 17 18 19 20 21E FREE CASH FLOW AND CAPITAL ALLOCATION 9 Free Cash Flow Dividends Share Repurchases Deleveraging 3.5x 2.7x Growing Dividend Cumulative Buybacks Net Leverage $B n $ p e r sh ar e Cash Generation ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$350MM PAID OVER LAST 10 YEARS ~$338MM 2.7x NET LEVERAGE (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition GREAT PLACE TO WORK! 10 2021 O U TLO O K Synergies ($ millions) Initial Three-Year Estimate Revised Three-Year Estimate 2021 Expected Realization Administrative $ 18 $ 20 $ 15 Sourcing 24 30 15 Operational 18 25 5 Total Synergies $ 60 $ 75 $ 35 CLARIANT INTEGRATION & COST SYNERGIES UPDATE 12 • Integration going extremely well: synergy target increased from $60 million to $75 million • $5 million of synergies in 2020 and expect to realize $35 million in 2021 • Relentless focus on guiding principles of safety first, employee collaboration and exceeding customer expectations • Future revenue synergies are not part of these estimates and represent additional growth over the long term $86 $103 $0.53 $0.70 ORGANIC GROWTH PROJECTIONS – Q1 13 Sales Adjusted Operating Income $991 $1,090 + 10% Adjusted EPS + 20% + 32% (in millions) (in millions) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition $308 $360 $1.93 $2.40 ORGANIC GROWTH PROJECTIONS – FULL YEAR 14 Sales Adjusted Operating Income $3,783 $4,100 + 8% Adjusted EPS + 17% + 24% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (in millions) (in millions) 2020 Pro forma $3,783 $308 Sustainable Solutions 60 11% 24 Healthcare 60 11% 18 Composites 20 10% 10 Growth in Emerging Regions 50 7% 11 Other (GDP growth) 82 5% 11 Sub-total $4,055 7% $382 COVID Response Applications (25) - (11) Outdoor High Performance Applications (15) - (7) Asia Payroll Tax Subsidy (COVID) - - (4) FX Impact 85 - 7 Synergies - - 30 Incentives, Travel, Other Employee Costs - - (37) 2021 Estimated $4,100 8% $360 2021 ORGANIC SALES AND OPERATING INCOME 15 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (2) COVID Response Applications: facemasks, personal protective equipment Sales Growth Rate Operating Income$ millions (2) CASH FLOW AND LEVERAGE 16 • Asset light business generates significant free cash flow • Cash generation in 2021 partially offset by restructuring activities to capture synergies associated with the Clariant Masterbatch acquisition • Cash flow deployed to M&A, opportunistic share repurchases and balance sheet / leverage reduction 3.5x 2.7x 2.1x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition ($ millions) 2020 2021E Adjusted EBITDA 382 510 Working Capital: Source / (Use) 116 (30) Cash Taxes (40) (53) Interest Paid (67) (76) CapEx (62) (75) CapEx for Synergy Capture (2) (20) Restructuring for Synergy Capture (11) (25) Other 22 19 Free Cash Flow 338 250 We sell solutions not commodities. 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.

WIRE & CABLE INDUSTRY BULLETIN ESSENTIAL CONNECTIONS Wire and cable constructions play a vital role in our modern world, providing the infrastructure for everything from power lines and data communication to broadband networks and automotive components. To meet the stringent regulatory and application requirements of a dynamic wire & cable industry, it is vital to understand how material technologies contribute to performance, fire safety, connectivity, and durability. DURABILITY Extended Life, Chemical Resistance, High & Low Temperature Performance, Flexibility, UV Stability, Tensile Strength SOLUTIONS: Cross-Linkable Formulations, UV & Light Blocking Additives, High-Temperature Crosslinked Formulations REGULATORY SPECIFICATIONS Quality Assurance, UL, CSA, CPR Compliant SOLUTIONS: Flame Retardants & Compliant Colorants, Product Authentication Technologies, Flame Retardant Engineered Polymers, LSFOH Flame Retardant Formulations PROCESSING EFFICIENCY Reduced Part Weight, High Extrusion Speeds, Ambient Curing SOLUTIONS: Cross-Linkable Formulations, Chemical Foaming Agents & Additives, Processing Enhancement Additives, IMPROVED SAFETY Flame Performance, Property Protection, Heat & Chemical Resistance SOLUTIONS: Flame Retardant Engineered Polymers, Wire & Cable Colorants, Antimicrobial Additives, POWER CABLES https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives/cesa-light-additives https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/colorant-chromatics-crosslinked-formulations DURABILITY & AESTHETICS Extended Life, High Material Flexibility, Chemical Resistance, UV Stability, Tensile Strength, Laser Markable Colors Colorants for Wire & Cable, UV & Light Blocking Additives, Antimicrobial Additives, Laser Marking Additives FIRE SAFETY Flame & Fire Performance, Low Dripping, Property Protection, Heat & Chemical Resistance SOLUTIONS: Flame Retardant Additives, REGULATORY SPECIFICATIONS BEAD, UL, CSA, and CPR Compliant, Quality Assurance SOLUTIONS: Engineered Fiber Products, Flame Retardants & Compliant Colorants, Product Authentication Technologies, LOW SMOKE & FUME NON-HALOGEN (LSFOH) High Flame Retardancy, Low Smoke, Fume, Corrosiveness & Toxicity, Smoke Mitigation SOLUTIONS: LSFOH Flame Retardant Formulations, Non-Halogenated FR Additives DATA CABLES SPEED & EFFICIENCY Faster Deployment, Lower Labor & Manufacturing Cost, High Extrusion Speeds SOLUTIONS: Chemical Foaming Agents & Additives, Processing Enhancement Additives, Laser Marking Additives, Water Blocking & Absorbing Yarn, Ripcords for Fiber Optic Cable ELECTRIC & THERMAL MANAGEMENT Low-Dielectric Performance, FEP Alternative, Data Integrity, Data Performance Flame Retardants & Compliant Colorants, LIGHTWEIGHTING Dielectric Strength Members, Weight Reduction SOLUTIONS: Chemical Foaming Agents & Additives, Synthetic Fiber Strength Members, Water Blocking & Absorbing Yarn HIGH-TEMPERATURE SOLUTIONS Pre-Colored Formulations, Laser Markable Colors, Standard & Custom Colors, Conductivity SOLUTIONS: High-Temperature Colorants & Pre-colored Solutions, High Temperature Marking Inks, Colorants & Additives, Conductive High-Temperature Formulations https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/ripcords-fiber-optic-cable https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/strength-members https://www.avient.com/products/polymer-colorants/high-temperature-color-concentrates https://www.avient.com/products/printing-and-marking-inks/colorant-chromatics-marking-inks https://www.avient.com/products/polymer-additives/colorants-and-additives-wire-cable https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/colorant-chromatics-conductive-formulations-0 POWER CABLES Cross-Linkable Formulations Syncure™ XLPE Cross-linkable Polyethylene Formulations ECCOH™ XL Cross-Linkable Formulations Colorant Chromatics™ Crosslinked Formulations UV & Light Blocking Performance UV & Light Blocking Additives ECCOH™ LSFOH UV Formulations Chemical Foaming Agents & Additives Excelite™ Chemical Foaming Additives Hydrocerol™ Chemical Foaming Agents Processing Enhancement Additives Cesa™ Processing Additives Cesa™ Laser Additives Colorant Chromatics™ UV Laser Marking Technology Flame Retardants & Compliant Colorants Cesa™ Flame Retardant Additives OnColor™ UL 94 Colorants Product Authentication Technologies Cesa™ Percept™ Authentication Technologies Syncure™ XLPE Cross-linkable Polyethylene Formulations ECCOH™ Low Smoke and Fume Non-Halogen Formulations ECCOH™ XL Cross-Linkable Formulations Wire & Cable Colorants OnColor™ Colorants for Wire & Cable Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Additives Electrical Performance Additives Electrical Performance Additives https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/syncure-xlpe-cross-linkable-polyethylene-formulations https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/eccoh-xl-cross-linkable-solutions https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/colorant-chromatics-crosslinked-formulations https://www.avient.com/products/polymer-additives/foaming-agents/excelite-chemical-foaming-additives https://www.avient.com/products/polymer-additives/foaming-agents/hydrocerol-chemical-foaming-agents https://www.avient.com/products/polymer-additives/colorants-and-additives-wire-cable/cesa-laser-additives https://www.avient.com/products/polymer-additives/laser-marking-additives/colorant-chromatics-uv-laser-marking-technology https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ul-94-colorants https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/syncure-xlpe-cross-linkable-polyethylene-formulations https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/eccoh-xl-cross-linkable-solutions DATA CABLES ECCOH™ Low Smoke and Fume Non-Halogen Formulations Maxxam™ FR Flame Retardant Polyolefin Formulations Maxxam™ SY Foamable Flame Retardant Formulations UV & Light Blocking Performance UV & Light Blocking Additives ECCOH™ LSFOH UV Formulations Chemical Foaming Agents & Additives Excelite™ Chemical Foaming Additives Hydrocerol™ Chemical Foaming Agents Processing Enhancement Additives Cesa™ CTR Additives Cesa™ Laser Additives Colorant Chromatics™ UV Laser Marking Technology Ripcords for Fiber Optic Cable Fiber-Line™ Ripcords Water Blocking & Absorbing Yarn Swellcoat™ Water Blocking & Absorbing Yarn Flame Retardants & Compliant Colorants Cesa™ Flame Retardant Additives OnColor™ UL 94 Colorants Product Authentication Technologies Cesa™ Percept™ Authentication Technologies Engineered Fiber Products Fiber-Line™ Engineered Fibers Synthetic Fiber Strength Members Fiber-Line™ Synthetic Fiber Strength Members Antimicrobial Additives Cesa™ WithStand™ Antimicrobial Additives Colorants for Wire & Cable OnColor™ Colorants for Wire & Cable Cesa™ Conductive Additives Cesa™ Stat Antistatic Additives LSFOH Flame Retardant Formulations ECCOH™ Low Smoke and Fume Non-Halogen Formulations 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

Buyer acknowledges that information in Seller’s marketing materials, technical data sheets and other descriptive publications distributed or published on its websites may vary from time to time without notice. Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. Handling of Personal Data.

You can trust that Avient materials meet the rigorous quality and safety management standards required across the globe You can be certain that Avient meets or exceeds the material safety data reporting requirements of your country or region ST5200-8030 ESD BK001 1 5 27 52 1980 42 E3 ST5200-8035 ESD BK001 1 20 22 37 1460 150 E3 +86.21.60284888 www.avient.com Copyright © 2021, Avient Corporation.