It required a high temperature and a strong injection pressure to bond to the acrylonitrile-butadienestyrene (ABS) substrate, which caused the resin to deform. Product developers reported that they needed a better TPE to provide superior bonding performance with ABS without requiring high temperature and pressure during 2K molding. Avient recommended an OnFlex™-S multicomponent TPE, which offers excellent adhesion to ABS and can be molded at lower temperatures and injection pressures than competitive products.

It required a high temperature and a strong injection pressure to bond to the acrylonitrile-butadienestyrene (ABS) substrate, which caused the resin to deform. Product developers reported that they needed a better TPE to provide superior bonding performance with ABS without requiring high temperature and pressure during 2K molding. Avient recommended an OnFlex™-S multicomponent TPE, which offers excellent adhesion to ABS and can be molded at lower temperatures and injection pressures than competitive products.

It required a high temperature and a strong injection pressure to bond to the acrylonitrile-butadienestyrene (ABS) substrate, which caused the resin to deform. Product developers reported that they needed a better TPE to provide superior bonding performance with ABS without requiring high temperature and pressure during 2K molding. Avient recommended an OnFlex™-S multicomponent TPE, which offers excellent adhesion to ABS and can be molded at lower temperatures and injection pressures than competitive products.

Specialized chemistries enable TPEs to adhere to many different plastic substrates, including polypropylene (PP), polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), PC/ABS, copolyester, polyamide, and polystyrene, for a seamless and permanent bond. For the manufacturer of a garden sprayer, a TPE increased usability of the ABS handle by contributing anti-slip performance even when the part is wet.

COLORMATRIX SELECT WILL ENABLE: • Immediate visibility of color performance and cost data for multiple formulation options • On-demand color supply • Full color choice with no minimum order quantities • Shorter development lead times enabling faster market access and multiple product introductions • Assured global color consistency • All the performance and process efficiency advantages of ColorMatrix advanced liquid colorants MANUFACTURERS TAKE CONTROL OF YOUR COLOR SUPPLY For manufacturers who use ColorMatrix Select will be able to create and order color formulations online in minutes. CONVENTIONAL COLOR DEVELOPMENT PROCESS REDEFINED COLOR DEVELOPMENT Direct online access to create new colors or view multiple color formulations matching your specification Full visibility on color accuracy data performance, price and regulatory status Order samples for dispatch within 24 hours On-demand color supply for production Color Supplier Designer Brand Target samples/ Target samples/ Matches Trials Manufacturer ApprovalsApprovals Trials Designer BrandManufacturer ColorMatrix Select Color Supplier Designer Brand Target samples/ Target samples/ Matches Trials Manufacturer ApprovalsApprovals Trials Designer BrandManufacturer ColorMatrix Select Multiple rounds of sampling, trials and approvals, usually over many weeks COLORMATRIX ADVANCED LIQUID COLOR SYSTEMS Not all liquid colors are the same!

MAXXAM™ NHFR NON-HALOGEN FLAME RETARDANT POLYOLEFINS PRODUCT SELECTION GUIDE Maxxam™ NHFR Polyolefins – Homopolymers Disclaimer: The technical data provided here reflects the characteristic values of flame-retardant polypropylene materials and is not intended as a product specification. Product Name H15 H XF V2 70 MF5200-5004 NHFR V2 HS MF5200-5005 NHFR V2 RS H MF5200-5006 NHFR V2 RS HS H6 H XF H20 H XF H6 T/05 H XF H6 T/10 H XF H6 T/20 XF H6 GF/10 XF V070 H8 GF/20 XF H12 GF/25 H XF V0 70 H6 GF/30 XF PE H XF Polymer PP PE Flammability V2 V2 V2 V2 V0 V0 V0 V0 V0 V0 V0 V0 V0 V0 UL Listed No No No No No No No No No No No No No Yes Reinforcement Unfilled Unfilled Talc Talc Unfilled Unfilled Talc Talc Talc Glass Filled Glass Filled Glass Filled Glass Filled Unfilled Density (g/cm3) 1.03 0.9 0.98 1.05 1.07 1.06 1.08 1.15 1.16 1.11 1.25 1.32 1.35 1 MFI, 230°C/2.16 kg 13 20 23 20 5.5 20 6 6 6 6 7 12 5.5 E-Modulus (Tensile Modulus - Mpa) 1900 1500 2400 2600 2500 2500 2500 3000 3000 4300 6500 7500 8250 2000 Tensile Strength (Mpa) 25 30 32 30 26 20 26 25 23 55 70 75 78 20 Elongation (%)

Continue fostering our Great Place to Work® culture Strategic ObjectivesStrategic Objectives Long Term Growth Rates Growth DriversGrowth Drivers $340 $455 $790 $1,175 $51 $84 $212 $668 $108 $113 $231 $293 $265 $358 $726 $830 8-12% 10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable GrowthProfitable Growth Great Place to WorkGreat Place to Work 5.4% 11.5% 16.2% 2006 2018 2022 EBITDA Margins $0.14 $2.67 $3.04 2006 2018 2022 2022 data is pro forma for acquisition of Avient Protective Materials and Distribution divestiture TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards 90th percentile 87th ESG Ratings Performance 5 5 Innovation is the lifeblood of a specialty company. 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 19 Avient Confidential 20 • 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 20 …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 21 AP P EN D IX 24 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. 26 3 3 4 4 4 5 5 7 7 9 10 FREE CASH FLOW CONVERSION 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. 28 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.5 13.8 12.7 12.6 11.3 8.7 18.6 16.5 10.1 10.0 9.7 9.5 9.4 8.7 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 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% 30 (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% END MARKET REGION 31 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 B ILL ION 52% 35% 32 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 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 33 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.

The amounts and values for the facility(ies) identified below are accurate, based on reasonable estimates using available data.  The data for the facility(ies) that I represent are hereby submitted to the programs identified below using the Single Window Reporting Application. I also acknowledge that the data will be made public.

These customizable formulations can replace traditional materials such as FR PC/ABS, FR PC/PET and FR COPE, offer improved chemical resistance to common disinfectants, achieve a UL 94 V-0 at 1.5 & V-1 at 0.75 flame rating when necessary, and can often be molded in existing PC/ABS tooling. Chemically resistant replacement for FR PC/ABS, FR PC/PET & FR COPE providing UL 94 Yellow Card V-0 flame rating at 1.5 mm, V-1 at 0.75 mm thicknesses for a broad color spectrum Outperforms FR PC/ABS, FR PC/PET and FR COPE in resistance to common disinfectants

MAJOR W&C PRODUCER C A T E G O R Y C A B L E • Flame retardance • Replace fluorinated ethylene propylene (FEP) • High tensile strength and high elongation at break • Low dielectric constant (Dk) of 2.7-2.9 for data signal integrity • Satisfied stringent UL 444 requirements with an FEP alternative to achieve cost savings • Mitigated regulatory concerns with comprehensive technical support during testing and commercialization • Met required melt strength parameters for efficient profile extrusion Maxxam™ FR Flame Retardant Polyolefin Formulations KEY REQUIREMENTS WHY AVIENT?