A business leader with a technical, entrepreneurial mindset, Dr. At SanDisk Corporation, he held technical and engineering leadership positions over an eight-year period, building and leading a global team of engineers, whose success underpinned the growth of the company.

Automotive chassis components, body panels Medical splints, braces, orthopedic fixators Avient’s Glasforms™ and Gordon Composites™ carbon fiber composite materials consist of thermoset continuous fiber polymer rods, bars, laminates and custom shapes used in a variety of applications that require superior technical characteristics. For more details including technical information, download the product bulletin.

Accredited Laboratory A2LA has accredited AVIENT CORPORATION North Baltimore, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017).

Buyer acknowledges that Seller has furnished to Buyer Material Safety Data sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product.

D is t. ) K W R P P G F U L R P M A V Y F M C H U N H X L S C L E C L E M N C E A S H Source: Peer data per Bloomberg market data as of February 15, 2022. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $635M and estimated CAPEX of $90M (excludes IT system upgrade of $25M and synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of February 15, 2022 86 89 85 80 76 76 89 85 79 78 76 76 76 70 69 63 8 A vi e nt K W R P P G F U L A V Y R P M F M C U N V R H U N B N R H X L E C L C E A S H E M N S C L A LB Source: Peer data per Bloomberg market data as of February 15, 2022 Total Enterprise Value / 2022E EBITDAWith the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets. APPENDIX Performance Additives 15% Pigments 13% TiO2 11% Dyestuffs 3%Polyethylene 12% Nylon 6% Polypropylene 5% Other Raw Materials 30% Styrenic Block Copolymer 5% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 31 • Significant raw material price inflation and tight inventory continued in Q4 2021 o For the full year, the average cost of hydrocarbon based materials was up 50% in 2021 o For the full year, the average cost of non- hydrocarbon based materials was up 12% in 2021 • Additionally, we continued to experience other supply chain challenges during Q4 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% EMEA 25% Asia 16% Latin America 9% 2021 SEGMENT, END MARKET AND GEOGRAPHY 33 GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 19% Industrial 16% Building and Construction 10% Telecommunications 4% Energy 2% END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M (1) Transportation 11% Healthcare 15% Packaging 34% Consumer 21% Healthcare 8% Industrial 16% Building & Construction 10% Transportation 9% Energy 1% Telecommunications 1% C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILL ION US & Canada 32% EMEA 40% Asia 21% Latin America 7% END MARKET REGION 34 All charts reflect 2021 financials 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 Consumer 27% Healthcare 10% Packaging 7% Telecommunications 16% Transportation 11% Industrial 11% Building & Construction 11% Energy 7% 2021 REVENUE | $919 MILLION END MARKET US & Canada 55% EMEA 25% Asia 20% REGION 35 All charts reflect 2021 financials DI S TR IBU T I ON Healthcare 26% Consumer 23% Packaging 5% Industrial 20% Transportation 16% Building and Construction 8% Energy 1% Telecommunications 1% US & Canada 80% Asia 3% Latin America 17% END MARKET REGION K E Y S U P P L I ER S 2021 REVENUE | $1 .6 B ILL ION 36 All charts reflect 2021 financials TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET Packaging 30% Consumer 26%Healthcare 13% Industrial 14% Building & Construction 5% Telecommunications 2% Energy 2% Asia (16% of sales) Transportation 8% Packaging 32% Consumer 13% Healthcare 5% Industrial 17% Building & Construction 12% Telecommunications 5% Energy 4% EMEA (25% of sales) Transportation 12% 37 Consumer 25% Healthcare 19% Packaging 10% Industrial 17% Building & Construction 10% Telecommunications 4% Energy 2% US & Canada (50% of sales) Transportation 13% Packaging 38% Consumer 33% Healthcare 8% Industrial 10% Building & Construction 5% Telecommunications 1% LATAM (9% of sales) Transportation 5% All charts reflect 2021 financials 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.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 AVIENT: WHO WE ARE 36 24 9 35 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 100+ manufacturing plants Key Financial Data 2023E Sales $3.4 billion 2023E EBITDA $530 million 2023E EPS $2.40 100% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 3 Guidance as of May 3, 2023 Webcast WHO WE ARE – VISION, STRATEGY, CULTURE 4 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi en t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N 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.

PRODUCT SELECTION GUIDE WIRE & CABLE SOLUTIONS Specialty Engineered Materials High performance insulation, jacketing, and cross-web formulations for the wire and cable industry Syncure™ XLPE Cross-linkable Polyethylene Formulations • Ambient curing • Flame performance • Resistant to heat, oil, creep, & abrasion • Low temperature properties • Low capital investment • High extrusion speeds • DBDPE-free grades available • UL/CSA bulletins Maxxam™ FR Flame Retardant Polyolefin Formulations • FEP alternative • Fire performance • UL 444 & plenum yellow card compliance • Low dielectric • High extrusion speeds • Thin wall extrudability Maxxam™ SY Foamable Flame Retardant Formulations • Low dielectric • Uniform cell structure • Crush & heat resistance • Ease of chemical foaming ECCOH™ Low Smoke and Fume Non-Halogen Formulations • Improved fire safety • Low smoke, fume, non-halogen (LSFOH) formulations • Chemical resistance ECCOH™ XL Cross-Linkable Solutions • Non-halogen, low smoke, toxicity, & corrosiveness • Excellent mechanical & electrical properties • Easily processed • Operating temperature of 90°C • Moisture cure technology Synprene™ Flame Retardant Thermoplastic Elastomers • Flexibility • Flame performance • Low temperature brittleness (LTB) resistance • Chemical resistance • Easily colored FireCon™ CPE Insulation Jacketing Formulations • Resistance to harsh environments • Low temperature performance • Flame performance • High extrusion speeds • Sunlight resistance FEATURES SPECIFICATION ECCOH™ XL 8148 Non-halogen, low smoke, toxicity, & corrosiveness EN50618 Syncure™ S100FH Horizontal flame UL 44 Syncure™ S100FH-XUV Horizontal flame, UV resistant UL 44 Syncure™ S100FH-UV Horizontal flame, FV-1 flame, UV resistant UL 44, UL 4703 Syncure™ S100FV VW-1 flame UL 44 Syncure™ S100FV-UV VW1, UV resistant UL 44 Syncure™ S112NA Non-flame retardant CSA 22.2 Syncure™ S120NA Non-flame retardant NSF 61 Syncure™ S200FH Horizontal flame, DBDPE-free UL 44 Syncure™ S200FV VW-1, DBDPE-free UL 44 INSULATION FOR POWER CABLE SYSTEMS Low Voltage Power Cables • Flame performance • Resistance to heat, oil, creep, & abrasion • Low temperature performance • Low capital investment • High extrusion speeds INSULATION & CROSS-WEBS FOR DATA CABLE SYSTEMS Category Cables • FEP alternative • Flame performance • Low dielectric constant • High extrusion speeds & thin wall capability • Chemical resistance • Low temperature performance • Flexibility FEATURES SPECIFICATION Maxxam™ FR 0521-48 R1 Low smoke & fume, non-halogen UL 444 Maxxam™ FR 0587-21 R3 Halogenated to plenum performance UL 444 Optical Fiber Cables • Resistance to harsh environments, chemicals, & sunlight • Low temperature brittleness (LTB) resistance • Low smoke & toxicity • Flexibility • High extrusion speeds FEATURES SPECIFICATION ECCOH™ 6649 UV Low DD Low smoke & fume, non-halogen Meets customer-specific flame requirements Coaxial Cables • Flexibility • High extrusion speeds • Low dielectric constant • Uniform cell structure • Crush & heat resistance FEATURES SPECIFICATION Maxxam™ SY 89-22-7 Foamable Meets customer-specific flame requirements JACKETING FOR POWER & DATA CABLE SYSTEMS Low & Medium Voltage Jacketing • Resistance to harsh environments, chemicals, & UV degradation • Low temperature brittleness (LTB) resistance • Low smoke & toxicity • Flexibility • High extrusion speeds • Easily colored FEATURES SUBMARKETS & USES FireCon™ CPE 30-33 RoHS Black Flame retardant, flexible Building & construction, industrial, nuclear FireCon™ CPE 37-36 RoHS Black Flame retardant, flexible Building & construction, industrial, nuclear FireCon™ CPE 30-20 RoHS Natural Flame retardant, flexible Building & construction, industrial, nuclear ECCOH™ 5549 UV Low smoke & fume, non-halogen, flame retardant Building & construction, industrial ECCOH™ 6649 UV Low DD Low smoke & fume, non-halogen, flame retardant Optical fiber, ducts ECCOH™ 5981 UV Low smoke & fume, non-halogen, flame retardant Industrial, Teck 90 wire Synprene™ RT5180 Flame retardant, LTB resistance Building & construction, industrial Synprene™ RT5180UV Flame retardant, LTB resistance Building & construction, industrial Synprene™ RT3870M Flame retardant, LTB resistance Building & construction, industrial 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

Avon Lake, OH for technical competence in the field of Chemical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017).

Avon Lake, OH for technical competence in the field of Chemical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017).

KEY BENEFITS • Provide long-lasting cooling and antimicrobial effects without compromising yarn spinnability • Bi-functional formulation simplifies the additive incorporation process • Fully compatible with both bath-dyeing and piece-dyeing methods • Support stable spinning performance and extended production cycles • Comprehensive product guidance and technical assistance from Avient’s experts MARKETS AND APPLICATIONS Cesa cool feeling & antimicrobial additives are specifically formulated for polyester and polyamide fibers used in apparel, but are also ideal for numerous other textile products, including: • Sportswear • Home textiles • Technical fabrics • Comforters 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.