Moving up the value chain, and expanding addressable market size by providing materials solutions in select and prioritized areas Copyright © . 2025 9 GROWING AT GROWING AT 1 Core grows above macro driven by share wins and faster business development in prioritized portfolios (growth vectors) CATALYZE THE CORE 2 Portfolios in high growth markets grow faster than core – building sizeable businesses of scale rapidly BUILD NEW PLATFORMS OF SCALE ► Prioritizing ► differently ► Creating “space” ► focused front-end and back-end structures Copyright © . 2025 10 Organic revenue growth with margin expansion LONG TERM FINANCIAL TARGETS +100 to +200bps above GDP Organic revenue growth Copyright © . 2025 11 Pathway to 20%+ adjusted EBITDA margins Operating leverage • Organic volume growth and SG&A efficiencies from prioritizing resources across the company 2 Mix improvement • Increased sales in higher margin growth platforms 3 Productivity • Manufacturing & sourcing efficiencies • Footprint optimization • Digital technologies Avient margin expansion Schematic illustration only Productivity +400bps margin expansion 20%+ Strategic objective 16.2% 2024 adjusted +2% +1% Operating leverage +1% Mix improvement Copyright © . 2025 12 Disciplined capital allocation PRIORITIZATION AND PHILOSHOPY Capex Expected annual spend between 3-5% of revenue to support investment in organic growth M&A De-emphasized in near term; complement organic growth strategy with M&A over time, as needed 2 Dividends Increasing each year with underlying earnings growth 3 Debt pay down Target net debt to adjusted EBITDA less than 2.5x 4 Share repurchases Opportunistic buy backs 5 Copyright © . 2025 13 Avient is a compelling investment thesis 2024 Results 15Copyright © . Full-year 2024 highlights ► 4% organic revenue growth for Avient; 3% for CAI and 6% for SEM ► Adjusted EBITDA margin expanded 20 bps for Avient; 90 bps for CAI and 110 bps for SEM ► New strategy in execution Leadership team strengthened with a new CTO, CIO, General Counsel, SVP (New business development & marketing) in place ► New compensation plan rolled out in January 2025, in direct alignment with the strategy ► 2024 was our safest year on record ► Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase FY 2024 results FULL YEAR 2024 VS. Specialty Engineered Materials END MARKETS REGIONS 17% 14%13% Defense Packaging Telecom 54% 33% US & Canada Europe, Middle East Energy Copyright © . 2025 26 Avient 2024 regional sales, by end market US & CANADA 41% of sales EMEA 35% of sales ASIA 18% of sales LATIN AMERICA 6% of sales 22% Packaging TelecomEnergyDefenseHealthcareBuilding & TransportationIndustrialConsumer 26% 16% 31% 26% 1%1% 2% 61% Copyright © . 2025 27 NON-HYDROCARBON MATERIALS HYDROCARBON-BASED ~35% of the raw material basket including part of “Other raw materials” are hydrocarbon-based Raw material basket 16% 4% 4% Performance additives Pigments TiO2 Dyestuffs Styrenic block copolymers Polypropylene Nylon Polyethylene Other raw materials 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.

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HAMMERHEAD™ MARINE 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 Resistance to harsh marine 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 Hammerhead™ Marine Composite Panels are made from continuous glass-fiber reinforced thermoplastic face sheets and polyester foam cores. GL AS S/ EP OX Y TA B M AT ER IA L N O T AB BREAK Hammerhead with 5 lb/ft3 (80 kg/m3) 420 lbs 191 kg Hammerhead with 7 lb/ft3 (115 kg/m3) 2 in 370 lbs 168 kg Hammerhead with 8 lb/ft3 (135 kg/m3) 332 lbs 151 kg 984 lbs 446 kg Glass/Polyester with Balsa Core 1298 lbs 589 kg Hammerhead with 5 lb/ft3 (80 kg/m3) Core Density - ITW Plexus MA420 Adhesive NA 501 lbs 227 kg Hammerhead with 7 lb/ft3 (115 kg/m3) Core Density - ITW Plexus MA420 Adhesive NA 839 lbs 381 kg Hammerhead with 8 lb/ft3 (135 kg/m3) Core Density - ITW Plexus MA420 Adhesive NA 1156 lbs 524 kg Hammerhead with 8 lb/ft3 (135 kg/m3) Core Density - Crestomer 1152PA Adhesive NA 1530 lbs 694 kg Hammerhead with 8 lb/in3 (135 kg/m3) Core Density - Crestomer M1-30 Adhesive NA 1471 lbs 667 kg Mixed Conditions ADHESIVE DESCRIPTION ADHESIVE GRADE MANUFACTURER AVERAGE BOND STANDARD DEVIATION FAILURE MODE BEST ADHESION 2k Urethane 75421 Lord 2281 psi 15.73 MPa 184 psi 1.27 MPa Substrate Cohesive 2k Acrylic SA1-705 GRY1 AccraLock 2211 psi 15.24 MPa 78 psi 0.54 MPa Substrate 2k Acrylic Plexus MA420 ITW 2171 psi 14.97 MPa 262 psi 1.81 MPa Substrate 2k Acrylic SA10-05 Blk1 AccraLock 2102 psi 14.49 MPa 138 psi 0.95 MPa Substrate 2k Urethane 75451 Lord 2047 psi 14.11 MPa 68 psi 0.47 MPa Cohesive 2k Acrylic SA1-705 GRY 1:2 AccraLock 1966 psi 13.56 MPa 68 psi 0.47 MPa Substrate 2k Acrylic Scotchweld 8010 3M 1907 psi 13.15 MPa 61 psi 0.42 MPa Adhesive Cyanoacrylate Gorilla Glue Gorilla Glue 1885 psi 13.00 MPa 432 psi 2.98 MPa Cohesive 2k Acrylic Crestabond PP-04 Scott Bader 1873 psi 12.91 MPa 281 psi 1.94 MPa Substrate  2k Acrylic SA10-05 Blk 10:2 AccraLock 1779 psi 12.27 MPa 127 psi 0.88 MPa Cohesive 2k Urethane 75422 Lord 1716 psi 11.83 MPa 190 psi 1.31 MPa Cohesive Adhesive 2k Urethane 75452 Lord 1535 psi 10.58 MPa 98 psi 0.68 MPa Adhesive 2k Methacrylate Polyfuse Icon Containment 1610 psi 11.10 MPa 98 psi 0.68 MPa Adhesive INTERMEDIATE ADHESION 2k Acrylic FA10-05 Blk C010817 AccraLock 724 psi 4.99 MPa 58 psi 0.40 MPa Cohesive 2k Acrylic FA10-05 Blk1 AccraLock 722 psi 4.98 MPa 44 psi 0.30 MPa Cohesive 2k Epoxy Loctite Epoxy Instant Mix Loctite 508 psi 3.50 MPa 81 psi 0.56 MPa Adhesive 2k Epoxy Gorilla Glue Epoxy Gorilla Glue 341 psi 2.35 MPa 198 psi 1.37 MPa Adhesive NOT RECOMMENDED  2k Epoxy Loctite Epoxy Marine Loctite 0 0 No bond ADHESIVE SELECTION Brands identified are owned by the manufacturers of the adhesive products. 1 surface sanded with 220 grit scuff prep 2 surface primed with 459T FASTENER TYPE BENEFITS CONSIDERATIONS Through-Bolting Best mechanical locking system Need back side access to panel Screw-In Anchor Highest pullout strength Requires pilot hole Cup Washer Spreads compressive load Requires relief hole; For substructure and hard point attachment Wide Grip (Bulb-Style) Rivet Ease of use—no installation torque limitations For lower load attachments Sheet Metal or Wood Screw Readily available, low cost Penetrate both skins for improved pullout Shoulder Washer Limits compressive load Requires relief hole; For substructure and hard point attachment For more information on installation, adhesives, and fasteners for specific applications, please contact Avient.

ColorMatrix™ AAnchor™ Acetaldehyde Control Technology: a finalist for Product Technology Innovation of the Year for sustainable packaging at the Plastics Recycling Show Europe (PRSE) 2024, this specially formulated acetaldehyde scavenger for PET packaging developed to improve recyclability, enhance bottle quality, and meet compliance with regulatory limits – winner will be announced during PRSE 2024 in Amsterdam, June 19-20, 2024 Cesa™ Unify™ A4R Polyolefin Compatibilizer: also a finalist for Product Technology Innovation of the Year for sustainable packaging at the Plastics Recycling Show Europe (PRSE) 2024, this innovative additive enables the use of recycled polyolefins by creating a homogenous polymer mixture, bridging the gap between virgin and recycled polymers, promoting circularity and sustainability – winner will be announced during PRSE 2024 in Amsterdam, June 19-20, 2024 

Overview of how Avient serves wire & cable customers, highlighting both power and data cables technologies Maxxam™ FR Polypropylene Solutions provide cost savings and improve data processing capabilities Maxxam™ NHFR Non-Halogen Flame Retardant Polyolefin Formulation provided an optimal balance of fire safety and durability for living wall planter

Avient materials deliver the must-have safety and reliability you can’t design without to keep modern transit systems running. Up to 20 W/mK Key benefits and data for long fiber thermoplastic (LFT) to replace metal for brackets and latches

Buyer will not alter, add or modify any labeling applied to Product which would alter or affect PolyOne’s obligations or liability for health, safety, or environmental warnings, regulatory-required warnings, express or implied warranties, or product liability. 6. Buyer shall comply with all applicable laws, regulations and administrative requirements, including those respecting unfair trade practices, anti-bribery, anti-corruption, anti-competitive or restrictive practices, health, safety, environmental, export controls, and trade sanctions.

MARKETS AND APPLICATIONS ColorMatrix Optica is formulated for PC resins used in the production of: • Automotive interiors • Appliance housings • Consumer goods • Food packaging • Finished materials such as PC sheet • Electrical & Electronics REGULATORY • No heavy metals or restricted ingredients • In-house chemical testing and verification system compliant with ISO ISO/IEC 17025:2005 • Dedicated product stewardship team globally and locally

KEY CHARACTERISTICS • Multipurpose, multi-resin colorant concentrates • Formulated with high quality, heavy metal-free pigments • Carrier system designed for compatibility across different resin systems • Samples available with quick turnaround in small lots for customer evaluation • Available in a wide range of stock and standard colors* • Low LDRs—typically 1–3% • Low minimum order quantities for both stock and non-stock colors * Color availability dependent on region or country PRODUCT BULLETIN MARKETS AND APPLICATIONS Omnicolor Multipurpose Colorants can be used for injection molding, blow molding, or profile and sheet extrusion processes.

MARKETS & APPLICATIONS • Thermoformed, APET food packaging, including: - Hot steam sterilization - Hot fill - Microwave use • Polyester • Sheet extrusion & thermoforming KEY CHARACTERISTICS • Suitable for hot steam sterilization, hot fill, and microwave applications • Ideal for food-grade containers with high rigidity and improved gas barrier • Can withstand temperatures up to 100°C • Available in both transparent and opaque options • Processable on existing thermoforming lines with heated molds KEY BENEFITS • A fully circular monomaterial, up to 100% rPET polymer content • Promotion of the circularity of PET and the resulting packaging is possible • Helps customers to comply with the Packaging and Packaging Waste Regulation (PPWR) that demands recyclability of all packaging with binding PCR content targets by 2030 • Demonstrates improved productivity in comparison to CPET during thermoforming • Helps avoid possible EPR fees or penalties on difficult-to-recycle packaging PRODUCT BULLETIN Copyright © 2025, Avient Corporation.