KEY CHARACTERISTICS • Fabric FX can be formulated to include properties such as UV color protection and anti-scratch performance • Fabric FX can be processed on standard molding machinery • Different matrix materials can be enhanced with Fabric FX, including ABS, PC/ABS, PB, and unfilled or talc-filled PP • There is no limitation on the graining that can be used; the fabric effect will differ depending on the grain effect engraved in the tool • If parts are extruded or a mold is not engraved, final parts will have an attractive speckled appearance, but will not be textured TYPICAL USES Fabric FX concentrates are suitable for any application that could benefit from an enhanced textile-like appearance.

Our products add important characteristics, such as water-blocking, water repellence, adhesion, color, and wear & UV-resistance to these and many other applications.

FX -11% FX -3% Total Avient -14% YoY Comparison against 2022 pro forma results • Aging infrastructure driving need for greater technological advancements and upgrades • Increased focus on strength and capacity of electrical grid plays into further adoption of composites into the market  UV, weather-resistance, customized capabilities  Best-in-class customer responsiveness  Local high-quality manufacturing, unparalleled breadth of portfolio  Expanding position in insulators, utility poles, crossarms, and wind energy Avient Confidential 11 ENERGY 11 • Fiber-optic investments from AT&T, Corning, Commscope continue to drive industry toward innovation • $42B BEAD program in Infrastructure Bill to increase cable deployments; well-positioned to capitalize on “Made in America” requirement and “last mile” buildout  Flame retardance, weather-resistance enables faster, safer, more reliable connections  Local manufacturing, unparalleled breadth of portfolio  Expanding position in insulation for wire jacketing, 5G buildout TELECOMMUNICATIONS Source: U.S. 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%  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  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 $0.60 $2.40 2023 GUIDANCE 15 Sales Adjusted EBITDA $845 $3,400 Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 16 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ 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 Composites 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 • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • 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 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 • 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% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 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 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 34% 38% END MARKET REGION 27 34% 21% Building & 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 52% 35% REGION 28 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 29 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 31 4 4 5 5 5 6 7 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

Avient uses a “systems approach” to develop the laser welding solution most adapted to your project, taking into consideration the following aspects: • Transmitting and absorbing parts • Polymer type and grade • Dispersion of the additive in the final part • Sufficient and consistent loading of the additive • Part design: attention to flow separation at the welding interface • Color and opacitiy • Quality control – e.g. establish suitable control parameters (UV Visible Spectra) • Laser wavelength and processing parameter Mevopur™ Healthcare Functional Additives formulated for laser welding are designed for use in healthcare applications.

Performance advantages: • Non-conductive: formulations engineered to optimize composite dielectric properties • Lightweight: up to 80% lighter than porcelain, reducing installation time and cost • High strength: high tensile, compressive, flexural and inter-laminar shear strength to support various design configurations and line loads • Flexible: deflect and return to original shape for load dampening to minimize damages and outages • Durable and shatter resistant vs. ceramic and glass, and UV and corrosion resistant for long service life INSULATORS AND ARRESTERS OVERHEAD SWITCH RODS CROSSARMS AND BRACES COMPOSITE POLES GUY INSULATORS Electrical Transmission & Distribution Applications  COMPONENT DESCRIPTION SIZES Insulators for transmission and distribution Suspension insulators Epoxy/corrosion resistant glass rods .625" to 1.25" diameter Line post and station post insulators Epoxy/glass fiber rods 1.50" to 4.74" diameter Arresters Cage type Polyester or vinyl ester/glass fiber rods .125" to .50" diameter Custom tubular Polyester, vinyl ester or epoxy/ glass fiber custom shapes 2.0" to 6.0" envelope size Pole line construction Conductor standoff and equipment support arms Polyester/glass fiber rods 1.50" to 2.00" diameter Guy strain insulators Polyester/glass fiber rods 0.50" to .812" diameter Cross arms Tangent and deadend, support braces Polyester/glass fiber rectangular tubes 3.62" x 4.62" and 4.0" x 6.0" rectangular Utility poles Composite poles Polyester/glass fiber hollow custom tubes 10" to 14" diameter, typical lengths 40' to 110' Pole line construction, cross arms, rods, and utility poles feature an integral fabric surfacing veil for long-term weather resistance and retention of properties.

APPLICATIONS: Power cables, Ethernet category cables, industrial cables, solar installation cables, coaxial cables, fiber optics, hybrid cables SYNCURE™ Cross-Linked Polyethylene for Power Cable Insulation • Resistant to heat, oil, creep and abrasion • Fast extrusion speeds • UL 44 & UL 4703 flame performance • UL/CSA bulletins MAXXAM™ FR W&C Flame Retardant Polypropylene for Category Cable Insulation and Cross-Webs • Alternative to FEP • Low dielectric • Thin wall extrusion capabilities • UL 444 & plenum yellow card flame performance FIRECON™ Flame Retardant Chlorinated Polyethylene for Industrial Cable Jackets • Resistance to harsh environments • Low temperature properties • UV resistance • UL 44 flame performance ECCOH™ LSFOH Low Smoke and Fume, Non-Halogen for Insulation and Jackets • Low smoke and toxicity • Improved fire safety • Resistance to chemicals • UL44 and CPR flame performance ADDITIONAL SOLUTIONS MAXXAM™ SY Foamed Polypropylene for Coaxial Cable Insulation SYNPRENE™ Flame Retardant Thermoplastic Elastomers POLYMIX™ Customer Proprietary Formulations For more information, please visit avient.com or call +1.844.4AVIENT (+1.844.428.4368).

KEY CHARACTERISTICS ECCOH 5924 ECCOH 5981 ECCOH 5983 UV Material Standards BS7655-6, 1 (LTS1–4), BS6724, IEC 60502 BS7655-6, 1 (LTS3) BS7655-6, 1 (LTS1–4) Tear Strength at 23°C 7.7 N/mm 10 N/mm 11 N/mm Tear Strength at 65°C 2.3 N/mm 5 N/mm 6.5 N/mm Hot Pressure Test (6h at 90°C) 39% –

Laser markable (IR and UV) • Fiber-reinforced for even greater mechanical properties What do you want to manufacture?

Solutions that promote UV stability, in order to retain flame retardancy efficacy after sun exposure, are also available.

TYPICAL GLOW WIRE FLAMMABILITY INDICES (GWFI) ACHIEVED WITH CESA FLAME RETARDANT ADDITIVES Other additives are available on request to fulfill specific requirements such as UV stabilization, laser marking or other functions.