A/S AQUA BLUE GEON WEJB400L BLK 2999 PP FR 8-6 LMS-1000

CASE STUDY: MAXXAM™ POLYOLEFIN FORMULATIONS NEW MATERIAL FOR PRECISELY ENGINEERED VEHICLE Challe nge Accepted.

The results showed the Avient material outperformed typical FR PC/ABS and had an added bonus: a UL yellow card V0 flammability rating for all colors and some thicknesses.* Avient also used its custom color matching capabilities to provide pre-colored material that simplified molding, while the material’s wide processing window helped accommodate a variety of molding environments. * V0 @ 1.5 and 3.0mm FR PC/ABS failed 0% 20% 40% 60% 80% 100% 120% 140% Virex TB Clorox Broad Spectrum CaviCide SaniCloth Plus wipes FR PC/ABS failed FR PC/ABS failed FR PC/ABS failed FR PC / ABS (1.0% Strain) FR PC / ABS (1.5% Strain) Trilliant HC (1.0% strain) Trilliant HC (1.5% strain) FR PC/ABS failed 0% 20% 40% 60% 80% 100% 120% 140% Virex TB Clorox Broad Spectrum CaviCide SaniCloth Plus wipes FR PC/ABS failed FR PC/ABS failed FR PC/ABS failed FR PC / ABS (1.0% Strain) FR PC / ABS (1.5% Strain) Trilliant HC (1.0% strain) Trilliant HC (1.5% strain) TENSILE STRENGTH RETENTION AFTER 7 DAYS EXPOSURE Both materials were tested according to ASTM D543 for 7 days.

Softening demand conditions in the fourth quarter most heavily impacted the Performance Products and Solutions (PP&S) and Specialty Engineered Materials (SEM) segments. Specifically, end markets negatively impacting PP&S were building & construction and appliance. Increased our dividend by 11% and for the seventh consecutive year in a row

Avon Lake, Ohio 11. Gazientep, Turkey 11. R&D Spend U .S .

Avient 2024 sales BUSINESS SEGMENTS END MARKETS REGIONS 63% S E M C AI 23% 4% 3% Packaging Telecom Energy Defense 41% 35% 18% US & Canada Latin America Europe, Middle East 25Copyright © . Color, Additives & Inks END MARKETS REGIONS 34% 21% 11% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 26Copyright © . Slide 4 Slide 5 Slide 6: Intersecting secular trends and high growth markets with our technologies to create product platforms of scale Slide 7: Strategic approach to drive sustainable growth Slide 8: Strategic approach to drive sustainable growth Slide 9: Strategic approach to drive sustainable growth Slide 10: Organic revenue growth with margin expansion Slide 11: Pathway to 20%+ adjusted EBITDA margins Slide 12: Disciplined capital allocation Slide 13: Avient is a compelling investment thesis Slide 14 Slide 15: Q1 2025 highlights Slide 16: Q1 2025 organic revenue growth - by region Slide 17: Playbook in current environment Slide 18: Color, Additives & Inks – Q1 2025 performance Slide 19: Specialty Engineered Materials – Q1 2025 performance Slide 20: Global reach with a local touch Slide 21 Slide 22: 2025 financial guidance unchanged...

AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) AU G U S T 2 0 2 2 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. WHAT WE DO: MATERIAL SCIENCE 5 CUSTOM FORMULATION SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2021 $310 205 140 80 75 45 40 20 $915M2021 Sales *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 Color business Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 6 S E CO N D Q UART E R 2022 RE S U LT S $122 $134 $0.87 $0.98 Q2 2022 PERFORMANCE (TOTAL COMPANY) 8 Sales Adjusted Operating Income $1,235 $1,302 + 5% Adjusted EPS + 10% + 13% (in millions) (in millions) (+ 10% excluding FX) (+ 16% excluding FX) (+ 20% excluding FX) Q2 2022 SEGMENT PERFORMANCE 9 CAI $624 $649 SEM Distribution $86 $94 + 4% + 9% $404 $443 $24 $27 + 10% + 13% $241 $244 $37 $37 + 1% Flat (+ 10% excluding FX) (+ 16% excluding FX) (+ 6% excluding FX) (+ 3% excluding FX) Q2 2021 $1,235 $122 Sustainable Solutions 17 7% 7 Healthcare 23 14% 5 Composites (ex Outdoor High Performance) 10 20% 4 Growth in Asia / LATAM 5 3% 1 Other 69 11% 5 Sub-total $1,359 10% $144 Outdoor High Performance Impact (9) (5) Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (48) (7) Q2 2022 $1,302 5% $134 Q2 2022 SALES AND OPERATING INCOME (TOTAL COMPANY) 10 Sales Growth Rate Operating Income$ millions EBITDA Q2 EBITDA BRIDGE 11 Price increases more than offsets raw material and supply chain impacts Q2 2021 $ 159 Demand (29) $ millions CAI: Price / Mix 87 Inflation (58) SEM: Price / Mix 36 Inflation (24) Distribution: Price / Mix 45 Inflation (41) Net Price Benefit 45 Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (7) Q2 2022 $ 170 China Lockdowns / Russia Impact $ (14) Outdoor High Performance (5) Transportation (5) 12 Q2 '21 Adjusted EPS 0.87$ Color, Additives and Inks 0.11 Specialty Engineered Materials 0.01 Distribution 0.03 Corporate Costs 0.01 F/X (0.05) Segment OI 0.11$ Interest Expense 0.03 Tax Rate (0.03) Q2 '22 Adjusted EPS 0.98$ Q2 EPS BRIDGE Key Updates • Provided progress on 2030 Sustainability Goals • Emphasized commitment to U.N. Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business DYN E E MA ACQ U I S I T I O N 32 15x stronger than steel Reduces weight by 30% vs. other solutions Well-maintained global asset base poised to serve growing demand • Purchase price of $1.48B represents 11.4x multiple of 2022 EBITDA • Acquisition will expand Avient’s composites and fiber portfolio with Dyneema®, the World’s Strongest Fiber™ • $415M sales and 30%+ EBITDA margins; Immediately accretive to pro forma 2022 EPS, adding $0.35 • 1,300 patents globally, ~50% of sales patent protected • 1,000+ employees across global production network and dedicated technology centers • Composites platform will increase from $261M to $680M in revenue and from $49M to $180M in EBITDA Indicates Dyneema® location $175M (42%) $65M (16%) $175M (42%) 2022E Sales By Region ($M) (1) $0.35 EPS excludes intangible amortization (2) Based on 2022 expected results (1) (2) (2) FIT WITH FOUR PILLAR STRATEGY 33 Specialization • Innovation-led organization with tremendous intellectual property value in trademarks, patents and “know-how” • Deep history of application development and premium, leading brand with the World’s Strongest FiberTM Globalization • Global customer base with an established presence across all major geographic regions • Global technology centers complement existing Composites applications and expertise Operational Excellence • Best-in-class safety performance • Well-run and maintained asset base fit to serve future growth • Highly effective and reliable supply chain with emphasis on optimizing service to customers Commercial Excellence • Deep customer relationships extend across the value chain and drive ability to grow • Offer a full suite of services with an active role in design, development and commercialization People Experienced and talented associates with a passion for safety, specialization and winning DYNEEMA® OVERVIEW K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders Body Armor • Helmets • Vehicle Protection $215M MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes $130M CONSUMER Consumer • Outdoor High Performance • Safety Equipment $70M 34 Figures reflect 2022 expected sales MIFOverview Competition Valuechain & Go-to-market Strategy Innovation Financials TECHNOLOGY 35 1,200 1,300 2,500 Avient Dyneema Combined Patents • True specialty business – the World’s Strongest Fiber™ • Deep history of application development with customers, strongest in the industry • The only UHMwPE (ultra-high molecular weight polyethylene) fiber producer that is backward integrated o Provides innovation advantage through control of all steps of the process • Complementary with our existing reinforced film expertise (PolyStrand) and engineered fiber presences (Fiber-Line) WINNING PROPERTIES Ultra high strength vs. weight Highly flexible Floats on water Chemically inert; no smell/taste and non-toxic High resistance to UV radiation Self-lubricating, with low friction One-of-a-kind technology ® FORMULATION PROCESS 36 • Like Avient, Dyneema® offers similar core competencies around formulation and material science • Technology that combines polymers and fibers to provide specialized, high performing solutions for customers • Design capabilities ensure that applications are highly customized for the specified end use DYNEEMA® IN THE VALUE CHAIN 37 UHMwPE Fiber / Tapes Military Personnel, Law Enforcement Heavy Marine, Offshore Wind Energy and Mooring, Aquaculture Outdoor, Footwear, Apparel, Inflatables • Material Science • Formulation • Service INTERMEDIATE MANUFACTURING (CUSTOMERS) OEM / APPLICATION DEMAND TRENDS 38 • Military spending and near-term demand for higher performing personal protection products (like Dyneema®) expected to increase o European NATO members annual defense spend expected to increase by up to 20%(1) o Japan aiming to almost double defense spending over the next 5 years(2) o Accelerated launch of next generation technology in North America • Policy-driven demand for sustainable energy; growth in floating offshore wind farms which require advanced, durable technology o Offshore wind expected to grow at a CAGR of 32% with the level of annual installations quadrupling over the next five years(3) • Continued investment in aquaculture as a sustainable food source(4) • Strong demand in outdoor high performance space across niche consumer applications aligns with 10% growth assumption for Avient’s Composites portfolio Sources: (1) “Funding NATO”, NATO.int (April 1, 2022) (2) “Japan Ruling Party Calls for Defense Spending Boost to 2% of GDP”, WSJ (April 21, 2022) (3) “Global Wind Report 2021”, Global Wind Energy Council (4) “Aquaculture Supports a Sustainable Earth”, NOAA Fisheries 39 A L I G N M E N T W I T H S U S T A I N A B I L I T Y G O A L S PRODUCTS AVIENT’S EXISTING COMPOSITES PORTFOLIO D I V E R S E C A P A B I L I T I E S A N D S O L U T I O N S S E R V I N G M A N U F A C T U R E R S A N D O E M S LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 40 AVIENT’S COMPOSITES PORTFOLIO SALES AND EBITDA 41 $74 $84 $216 $212 $261 $5 $10 $32 $41 $49 $180 0 50 100 150 200 $- $50 $100 $150 $200 $250 $300 $350 $400 $450 $500 $550 $600 $650 $700 $750 2017 2018 2019 2020 2021 2022E $680 • Dyneema® acquisition will further improve Composites EBITDA margins to 26% • Dyneema® will complement our existing portfolio with deep formulation expertise, innovative culture and global commercial presence • Composites will continue to be a key growth driver to deliver future revenue growth in excess of GDP (1) Pro forma for the acquisition of Dyneema® SEGMENT DATA U.S. & Canada 50% Latin America 2021 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% Building and 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 43 34% Building & 1% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILLION 32% 40% Latin America END MARKET REGION 44 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 27% Building & 2021 REVENUE | $919 MILLION END MARKET 55% REGION 45 D I S T R I BU T I O N 26% Building and 80% 3% Latin America END MARKET REGION K EY SU PPL IER S 2021 REVENUE | $1 .6 BILLION 46 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 26%Healthcare 14% Building & 2% Energy (16% of sales) 32% Building & (25% of sales) 47 19% Building & US & Canada (50% of sales) 38% 33% Building & LATAM (9% of sales) 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.

CT) on May 11, 2016. CT) on May 11, 2016. Our performance has exceeded the S&P 500 Index as well as the S&P Mid Cap Chemicals Index.

Reinforced Polyolefins for Automotive: Maxxam™ LO low odor talc-filled polypropylenes and Maxxam™ XST thermoplastic olefins are the latest additions to a complete line of specially formulated polyolefins. Maxxam™ LO materials help OEMs meet vehicle interior air quality (VIAQ) standards in underhood HVAC applications because it enables reduced VOC emissions and consistently achieves odor testing results of 3.0 per VDA 270. In addition, Maxxam™ XST materials offer an exceptional balance of stiffness and impact performance for automotive interior design, even in cold temperatures.

Product range • A comprehensive selection of colors and color indices • SPDs are produced at various concentrations to meet customer requirements • Good spinnability • Full dispersion • Excellent tinting strength • Maximum fastness properties • Lot-to-lot consistency • Carriers: PET, PBT, PA 6, PP • Continuous filaments (POY, FDY, HOY, BCF) CUSTOM COLORS Our pilot spinning plants are capable of producing a full range of yarn counts, to match custom colors and offer bespoke color options. Good spinnability • Full dispersion • Excellent tinting strength • Maximum fastness properties • Lot-to-lot consistency • Carriers: PET, PBT, PA 6, PP • Continuous filaments (POY, FDY, HOY, BCF) Special Products Our portfolio includes color formulations for high-tenacity yarn applications. Suzhou New District (SND) Building No. 13, 855 Zhujiang Road Suzhou, China, 215129 Phone: +51 266 900 333 Sales Office & Manufacturing Plant 79 Moo 11, Soi Kingthong, Kingkaew Rd.