Transforming Modular & Offsite Construction with Advanced Composites APPLICATION GUIDE Siding & Cladding Impact resistance; thermal expansion reduction; superior strength-to-thickness ratio compared to traditional siding Roofing Systems Impact resistance; flexural strength; thermally insulative; will not contribute to mold or rot Interior Wall, Floor, & Improved structural integrity; integrated fire protection; customized dimensions & finishes; thermal insulation; water, pest, & impact resistance Doors Impact resistance; ballistic resistance; high strength-to-weight ratio Exterior Sheathing Continuous insulation; impact, moisture & rot resistance; lightweight construction Garage Doors Impact & corrosion resistance; high flexural strength; customized dimensions & finishes; weatherability; UV stability; weight reduction Flood Barriers Moisture & corrosion resistance; durable; will not contribute to mold growth Composite Decking & Lumber Reinforcements for increased strength; material & weight reduction Cabinetry & Storage Weight reduction; customized dimensions & finishes Hammerhead™ FR Flame Retardant Composite Panels & Laminates Hammerhead™ & Polystrand™ GlasArmor™ & ThermoBallistic™ Ballistic Panels Polystrand™ Continuous Fiber Tapes ADVANCED COMPOSITES FOR BUILDING & CONSTRUCTION Polystrand™ Continuous Fiber Laminates Storm Shutters Impact & ballistic resistance; superior strength-to-weight ratio Safe/Panic Rooms Ballistic & impact resistance 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation. MATERIAL SOLUTION DESCRIPTION KEY CHARACTERISTICS POTENTIAL APPLICATIONS Hammerhead™ FR Flame Retardant Industry-first flame retardant thermoplastic composite panels that meet ASTM E84 Class A standards for flame spread and smoke developed and passed NFPA 286 corner room burn testing • Excellent flame performance • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Interior Wall, Floor & Ceiling Panel Systems • Garage Doors • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Hammerhead™ and Polystrand™ Composite Panels Thermoplastic composite panels constructed with Polystrand™ continuous fiber laminates thermally bonded to thermoplastic foam or honeycomb cores • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Garage Doors • Interior Entry Doors • Interior Wall, Floor & Ceiling Panel Systems • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Polystrand™ Continuous Fiber Tapes & Laminates High strength unidirectional (UD) glass fibers combined with thermoplastic resins available in unidirectional tapes or multi-ply laminates • High strength and stiffness • Enables impact resistance • Formulations available to meet ASTM E84 Class A and Class B flame/smoke rating • Composite Deckng • Roofing Systems GlasArmor™ Ballistic Resistant Panels Ballistic protection constructed from layers of 0°/90° woven E-glass fiber reinforcements with a proprietary thermoset resin system • UL 752 Level 1–3 compliant • Less than 25% the weight of comparable steel panel • 1-hr fire rating per ASTM E119* • Safe/Panic Rooms • Garage Doors ThermoBallistic™ Thermoplastic Panels Industry-first thermoplastic ballistic resistant panels thermally formed with layers of 0°/90° UD E-glass fiber reinforcements and polyolefin-based resin systems • UL 752 Level 3 compliant • Extremely lightweight • Moisture, UV, and corrosion resistant • Safe/Panic Rooms • Garage Doors * UL Level 3 panel was fire tested as part of a wall system with steel studs and drywall facesheet

WEIGHT REDUCTION • Up to 75% lighter than steel; up to 25% lighter than aluminum • Better fuel economy for transportation • Simplified installation DESIGN FLEXIBILITY • Complex shapes less costly to produce than metal • Ability to tailor strength and stiffness in specific areas • Versatile aesthetic options for surface finish PART CONSOLIDATION • Easier installation and assembly with fewer parts • Simplified transport of finished goods • Fewer parts = reduced chance of failure Value that the U.S. composite materials market is expected to reach by 2022 $10.6B 50% Amount of weight reduction that advanced composites could bring to passenger cars, leading to 35% better fuel efficiency 7% CAGR that analyst firm Technavio forecasts the global medical composite materials market will experience from 2016–2020 Fiber-reinforced polymer composites combine thermoset or thermoplastic resins with fiber reinforcement, the resulting product having substantially different properties than the individual components. ADVANCED COMPOSITES FOR DEMANDING APPLICATIONS ADVANCED COMPOSITES PERFORM THERMOSET VS. THERMOPLASTIC The matrix material of a composite can be a thermoset or a thermoplastic THERMOSET THERMOPLASTIC A thermoset is a cross-linked polymer that cannot be reshaped after it’s formed, cured, and cooled.

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In fact, its engineers routinely test and validate a host of new composite applications. The composite parts held up well, and passed stringent standards for long-term performance. The Avient composite cradle brace became a lighter- weight performance upgrade for the stock aluminum cradle brace.

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Operating Income $3,783 $4,300 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 $308 $410 $308 $430 $1.93 $2.80 $1.93 $3.00 (1) (1)(1) (1)(1) (1) $442 $457 $580 $1.74 $1.93 $3.00 FULL YEAR 2019 – 2021 ORGANIC GROWTH 16 Sales Adjusted EBITDA $3,981 $3,783 $4,650 + 17% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 31% + 72% ($ 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 17 BALANCE SHEET • 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 Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SUSTAINABILITY FOR A BETTER TOMORROW • 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 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 19 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. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 SUSTAINABILITY TARGETS 20 2021 AVIENT INVESTOR DAY 21 • Investor Day to be held December 9, 2021 in New York, NY • Company will provide updates on its key growth drivers with a deep focus on sustainable solutions Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites / 5G 10% Growth in Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% • Senior leadership team to also present on Clariant MB integration, M&A opportunities and capital allocation priorities PEER COMPARISONS 22 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Masterbatch revenue synergies, that will drive long-term revenue growth in excess of GDP o Clariant Masterbatch cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered.

We will do so through our investments and focus on sustainable solutions for high-growth markets, including healthcare, consumer, packaging and composites. Composites Functional Additives Adv. Peer data per Bloomberg market data as of December 2, 2021.

POLYSTRAND™ THERMOPLASTIC COMPOSITE PANELS APPLICATION & INSTALLATION GUIDE PRODUCT DESCRIPTION FEATURE BENEFIT Exceptional strength-to-weight ratio Lightweight yet strong structural performance and increased payloads Resistance to UV light, chemicals, moisture degradation and rot Withstands harsh conditions Tough and impact resistant Durability and long product life Dimensionally stable Consistent performance in extreme temperature and humidity fluctuations Strong adhesive properties Easy bonding to various materials FEATURE BENEFIT Ready-to-install Fewer parts & reduced scrap Large format Improved aesthetics with seamless designs Made via continuous-fiber manufacturing process Consistent quality in every panel PERFORMANCE ADVANTAGES MANUFACTURING ADVANTAGES Polystrand™ Thermoplastic Composite Panels are engineered to provide simplified installation, long-lasting components, and overall cost reduction. Hammerhead™ Composite Panels are made from continuous glass-fiber reinforced thermoplastic face sheets and polyester foam cores. To learn more about our advanced composite solutions, contact Avient at 1.844.4AVIENT or visit www.avient.com.

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