TOP SPEAKER MANUFACTURER W A T E R P R O O F S P E A K E R G A S K E T • Provide good sealing properties • Protect from water and dust • Reduce production time and costs • Increase design freedom • Provided a low compression set TPE with IP67 ingress protection • Easily prevented ingress of dust and water • Decreased cycle times and reduced overall manufacturing costs • Increased design freedom with overmolding Versaflex™ CE 3120-40 Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?

COSMETIC PACKAGING OEM L I P G L O S S T I P B R U S H • Good chemical resistance • Shore 40A hardness at a 60-degree angle • Natural/transparent color • Can be flocked • Delivered a formulation with good chemical resistance to oil in long-term environments • Provided an easy-to-mold TPE and replaced TPU/TPEE with a better soft touch feel • Offered good adhesion with an epoxy resin glue with no impact on the flocking process Versaflex™ Thermoplastic Elastomers KEY REQUIREMENTS WHY AVIENT?

Medical textile manufacturer MEDICAL TEXTILE MANUFACTURER A A M I S T A N D A R D G O W N S • Water repellent properties for nonwoven fabric • Fast and long-lasting water repellency • Usable in nonwoven SMS spunbond layer • Enhanced liquid repellency in spunbond layer • Eliminated the need for secondary water repellent coatings • Provided long lasting hydrophobic performance • Achieved IPA repellency grade 6 Cesa Fiber Additives Hydrophobic Solutions KEY REQUIREMENTS WHY AVIENT?

Avient corporation first quarter 2024 results and 2024 financial guidance AVIENT CORPORATION F I R S T Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) M AY 7 , 2 0 2 4 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 O P E N I N G RE MARK S 4 REGIONAL DEMAND TRENDS-TOTAL COMPANY Q 1 S A L E S V S P Y ( E X C L U D I N G F X ) 4 US & Canada Latin America EMEA Asia +2% -6% Flat +2% Avient ex. Q1 2023 (TOTAL COMPANY) $846 $829 Q1 23 Q1 24 $134 $143 Q1 23 Q1 24 17.3% Sales Adjusted EBITDA (in millions) $0.63 $0.76 Q1 23 Q1 24 Adjusted EPS (in millions) + 7% + 21% Sales Adjusted EBITDA Adjusted EPS 6 - 2% 15.8% +150 bps * * * Adjusted EBITDA Margin % Q1 2024 SEGMENT PERFORMANCE (COLORS, ADDITIVES & INKS) $537 $515 Q1 23 Q1 24 $91 $97 Q1 23 Q1 24 18.8% Sales Adjusted EBITDA (in millions) (in millions) + 7% Sales Adjusted EBITDA 7 - 4% 17.0% +180 bps * * * Adjusted EBITDA Margin % • Year over year demand continues to improve for the segment but slowly due to continued weakness in Europe • Raw material deflation & cost reduction actions primary drivers of adjusted EBITDA growth and margin expansion of +180 bps vs Q1 2023 Q1 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $310 $314 Q1 23 Q1 24 $64 $73 Q1 23 Q1 24 23.2% Sales Adjusted EBITDA (in millions) (in millions) + 14% Sales Adjusted EBITDA 8 + 1% 20.8% +240 bps * * * Adjusted EBITDA Margin % • Sales growth in defense end market offset by weaker demand in telecommunications end market • Raw material deflation and favorable mix impact from defense sales primary drivers of adjusted EBITDA growth and margin expansion of +240 bps vs Q1 2023 Q1 EBITDA BRIDGE (TOTAL COMPANY) 9 $ millions CAI: Price / Mix (1) Deflation 16 SEM: Price / Mix 4 Deflation 7 Net Price Benefit 26 Wage/Other Inflation (9) FX (2) Q1 2024 $143 Adjusted EBITDA Q1 2023 $ 134 Demand (6) • Positive net price benefit: o Favorable raw material deflation in both segments • Wage and other inflation more than offset cost reductions/synergies 2024 G U I DAN CE FY 2024 GUIDANCE Original Revised Adjusted EBITDA $505 to $535 million $510 to $535 million Adjusted EPS $2.40 to $2.65 $2.50 to $2.65 Interest Expense $105 to $110 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 11 Q2 2024: Adjusted EPS of $0.71 CE O “ TO P O F MI N D” FO CU S ARE AS AREAS OF FOCUS 13 +7% Drive Profitable Organic Top-Line Growth with Margin Expansion Amplify Innovation Build Leadership & Talent Pipeline AP P E N DI X 16 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 18 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 BILLION US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 19 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 BILLION US & Canada 52% EMEA 35% Asia 13% 20 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 21 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.

SPORTS EQUIPMENT OEM D I S C G O L F D I S C S • Replace incumbent polymer with an alternative material that offered consistent supply and comparable performance • Colorable and able to support product differentiation using special effects • Grippy but not tacky • Ability to meet varying flexibilities and weights • Professional Disc Golf Association approval • Presented a TPE with diverse durometers to support a range of disc capabilities, weights and grip features • Delivered a durable material with good flow characteristics for simple and economical production • Provided a natural, easy-to-color material with good UV resistance • Offered a breadth of material and specialty services to enable product line expansion using metallic effects, polymer additives, and additional material formulations Dynaflex™ Thermoplastic Elastomers KEY REQUIREMENTS WHY AVIENT?

BUILDING MATERIALS RETAILER R O O F I N G M E M B R A N E S • Improve marketing claims for product performance and polymer integrity • Prevent and improve field life, and protect product from the growth and appearance of flora, fungi and algae from outdoor environmental exposures • Ability to convert materials from liquid to solid in order to accommodate advanced manufacturing technique • Seeking OBPA alternative • Delivered a product differentiating solution that eliminated both polymer-degrading microbials and mitigated the flora and fungal accumulation that causes discoloration and staining • Enabled versatility with combined liquid and solid masterbatch solutions • Provided a cost-effective and environmentally friendly OBPA alternative WithStand™ Antimicrobial Additives KEY REQUIREMENTS WHY AVIENT?

WALL PARTITION MANUFACTURER F O O D P R O C E S S I N G E N V I R O N M E N T S • Decrease growth of microbes on plastic surfaces that come in contact with food products • Compatibility with sheet extrusion processing • Maintain all other functional attributes inherent to product, such as ROHS, flame retardant standards, and specific brand color • Seamlessly incorporated multifunctional additives for optimal performance in reducing microbe growth • Developed custom formulation for complex processing configurations in sheet extrusion technology • Provided expertise in antimicrobial performance, chemical resistance, flame retardance, and regulatory product stewardship Cesa™ WithStand™ Antimicrobial Additives and Smartbatch™ Combination Colorants and Additives KEY REQUIREMENTS WHY AVIENT?

Excelite OnePager Grab Handle (2) TIER 1 MOLDER A U T O M O T I V E G R A B H A N D L E • Reduce production cycle times • Achieve processing consistency in chemical foaming additive (CFA) performance • Control dimensional stability and reduce production scrap rates • Lower conversion costs • Improved cycle time by 20% • Achieved additional 2% density reduction • Resulted in a finer cell structure with a higher cell density, significantly improving dispersion and dimensional stability • Maintained Class A finish • Reduced CFA use rate by 80% Excelite™ IM Chemical Foaming Additives KEY REQUIREMENTS* WHY AVIENT?

MEDICAL TUBING EXTRUDER B I O P H A R M A C E U T I C A L T U B I N G • Low leachables & extractables • Great tensile performance and kink resistance • Good thermal weldability • Excellent clarity and medical blue tint • ISO 10993-4 & 5, USP Class VI & Animal Derivative Free (ADF) • Supplied drop-in material replacement to overcome supply constraints of incumbent TPE • Offered a lower extractable profile than comparable materials in the market • Enabled easy material transition without changes in tooling or thermal welding machine settings • Formulated solution with proprietary additives to provide clarity and prevent yellowing after sterilization Versaflex™ HC BT218 Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?

AUTOMOTIVE OEM S U V R E M O V A B L E R O O F P A N E L L O C K I N G B R A C K E T • Lower weight by replacing cast steel • High stiffness & strength requirements to mimic metal performance • Critical dimensional tolerances to safely secure removable roof panels • Lowered weight by over four pounds per vehicle to achieve 80% reduction with carbon fiber reinforced composite • Provided injection molded material solution to simplify fabrication and eliminate need for powder-coating finish Complēt™ Long Carbon Fiber PPA Composite KEY REQUIREMENTS WHY AVIENT?