CABLE MANUFACTURER J A C K E T F O R P O W E R C A B L E • High tear resistance > 11 N/mm • High environmental stress cracking resistance (ESCR) • Cost efficient solution • Hot pressure resistance above 80°C • Provided a jacket solution that complies with LTS1 requirements as per the BS 7655-6.1 standard • Enabled use in over-armored cables operating at a maximum conductor temperature of 90°C • Supported our customer in optimizing the processing of the new material ECCOH LSFOH 5983 Formulation KEY REQUIREMENTS WHY AVIENT?

GLOBAL CONSUMER ELECTRONICS BRAND G A M I N G W H E E L G R I P • Soft touch feel • Good bonding with PC+20GF substrate • Non-blooming surface finish • Replaced leather with a TPE to improve production efficiency through overmolding • Provided a recyclable alternative to silicone, giving the customer the choice of more sustainable grip material • Offered durable solution with good wear resistance and excellent chemical and oil resistance Versaflex CE TPE KEY REQUIREMENTS WHY AVIENT?

Microsoft PowerPoint - AVNT Q1 2024 Investor Presentation AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) M AY 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. Continue fostering our Great Place to Work® culture Strategic ObjectivesStrategic Objectives Long Term Growth Rates Growth DriversGrowth Drivers $340 $455 $790 $1,135 $51 $84 $212 $645 $108 $113 $231 $230 $265 $358 $726 $725 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable GrowthProfitable Growth Great Place to WorkGreat Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 87th 94th percentile 5 Avient CDP Score: A- M AY 7 , 2024 W EB CAS T P RE SE N TATI O N 7 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 ) 7 +2% -6% Flat +2% Avient ex. Q1 2023 (TOTAL COMPANY) $846 $829 $134 $143 17.3% (in millions) $0.63 $0.76 (in millions) + 7% + 21% Sales Adjusted EBITDA Adjusted EPS 9 - 2% 15.8% +150 bps Q1 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $537 $515 $91 $97 18.8% (in millions) (in millions) + 7% 10 - 4% 17.0% +180 bps • 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 $64 $73 23.2% (in millions) (in millions) + 14% 11 + 1% 20.8% +240 bps • 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) 12 $ 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 IDA N 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 14 Q2 2024: Adjusted EPS of $0.71 CE O “TO P O F M IN D ” FO CU S ARE A S AREAS OF FOCUS 16 +7% Drive Profitable Organic Top-Line Growth with Margin Expansion Amplify Innovation Build Leadership & Talent Pipeline AP P EN D IX 19 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer 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% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 21 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 22 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 23 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 24 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.

Medical textile manufacturer LEARN MORE MEDICAL TEXTILE MANUFACTURER S U R G I C A L D R A P E S & G O W N S • Pre-tested for ISO 10993 biocompatibility standard • Available in standard blue or other customized colors • Compatible with ETO sterilization • Suitable for use in non-woven SMS spunbond layer • Offered standard blue and custom colors such as green • Pre-tested raw materials for biocompatibility ISO10993 standard • Manufactured under ISO 13485 certified medical sites with change control in place MevopurTM Healthcare Colorants and Formulations KEY REQUIREMENTS WHY AVIENT?

RAIL CAR MANUFACTURER D O O R P A N E L • High stiffness-to-weight ratio and improved thermal insulation to incumbent materials • Efficient manufacturing process to ensure quality panel construction and standards • Domestic supply and manufacturing to ensure timely delivery • Reduced component complexity compared to metal • Custom-engineered panel with varying core materials and thicknesses to meet performance requirements • Reliable material supply with product manufactured in United States CRTM™ Composite Sandwich Panels KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION CORROSION & IMPACT RESISTANT LEARN MORE Copyright © 2024, Avient Corporation.

ADVENTURE CAMPER MANUFACTURER W A L L & F L O O R P A N E L S • Ability to customize the face sheet structure, core material, and thickness to meet performance requirements • Lightweight, high strength-to-weight ratio compared to wood and aluminum • UV, chemical, and moisture resistant • Custom formulated the panel construction to meet lightweight, durability, and insulation requirements • Avient engineering team provided on-going material sampling and technical support throughout the development cycle • Ensured the face sheet structure provided a smooth surface finish and good adherence to paint or aluminum fixtures Polystrand™ Thermoplastic Composite Sandwich Panels KEY REQUIREMENTS WHY AVIENT?

DONGGUAN FYRNETICS F I R E A L A R M C O M P O N E N T S • Excellent conductive performance, EMI shielding • Excellent IR absorption • Quality stability • Formulated material to meet all customer’s CTQs and support sensor’s certification for sensitivity and accuracy • Provided shorter lead time than previous material supplier, plus excellent service to support material change • Tested surface resistivity using ASTM D257 method, achieving result of E3-E4 Stat-Tech™ ST7400-8010 ESD Formulations KEY REQUIREMENTS WHY AVIENT?

POWER TOOL COMPANY B A T T E R Y P A C K • HDPE based solution • Meet flammability performance requirement for UL94 V-0 • Consistent color and global availability • Provided global technical services to enable consistent material quality in Europe and Asia • Tested and verified flame retardant performance conforming to UL94 V-0 @ 1.5 and 3.0 mm, GWFI 960°C • Delivered a pre-colored, HDPE-based solution for color uniformity globally Maxxam ™ FR Formulation KEY REQUIREMENTS WHY AVIENT?

WIRE &CABLE COMPANY O P T I C A L C A B L E S H E A T H • Excellent resistance to fungi and mildew • Good UV resistance • Meet flame retardant standard IEC 60332-3C • Provided an anti-fungi solution with an ISO 846 rating of 0, showing no growth under microscope • Formulated solution to meet flammability performance demands for IEC60332-2 or GBT 18380.22-2008 compliance • Complied with Biocidal Product Regulation (EU) No528/2012 (BPR) ECCOH™ Thermoplastic Formulation KEY REQUIREMENTS WHY AVIENT?

CABLE MANUFACTURER A E R I A L D R O P C A B L E J A C K E T • Pass clamp test requested by end customer • Strong UV resistance & mechanical performance • Excellent processing • Good fire performance to pass CPR class Cca / Dca • Low shrinkage (< 1%) • Exceeded material fire performance requirements and met all other performance criteria • Simplified supply chain with local manufacture in Europe • Enabled customer to run material at optimum processing conditions by providing support with machine set up ECCOH™ 5978 UV Formulation KEY REQUIREMENTS WHY AVIENT?