Bring tactile and visual appeal to your human-machine interface designs with GLS™ OnFlex™ TPEs TPE Overview, key characteristics and technical data on nylon alternatives for powersports applications

NEWLY EXPANDED Versaflex™ HC Thermoplastic Elastomers (TPEs): a family of specialty and customizable TPEs with a broad range of performance characteristics and durometers, including grades formulated without animal derivatives, making them useful for countless injection molding or overmolding applications. This cutting-edge tool offers an important data point for the carbon footprint of Avient’s materials so customers can better understand the environmental impact of products, meet sustainability goals, and navigate the complex landscape of reducing carbon emissions.

Global Compact • Highlights ESG Performance, including ratings, awards, and certifications • Features increased carbon emissions disclosures, including Climate Change Scenario Analysis and Scope 3 emissions data • Outlines Sustainable Supplier Program, designed to enable supplier evaluation & collaboration • Reflects Great Place To Work® culture focused on safety, employee engagement and advancing diversity, equity and inclusion 2022 SUSTAINABILITY REPORT 15 Avient Confidential 16 • Virtual presentation to be held September 20, 2023 • Leadership will be conducting an investor-focused presentation around our sustainable solutions portfolio • Deep dive into how we enable customers to achieve their sustainability goals SUSTAINABILITY DAY 16 …are Growing at Twice the Rate as Conventional Products Sustainably-Branded Products… STAKEHOLDER INFLUENCE DRIVES DEMAND Consumers Are demanding recyclability and eco- conscious products Governments Are mandating changes through legislation, taxes, and regional accords Brand Owners Have committed to ambitious goals to achieve sustainability metrics 17 AP P EN D IX 20 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,280 and estimated run-rate CAPEX of $110M. 22 3 2 3 3 4 4 3 3 4 5 5 7 8 8 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 24 EV / 2023E EBITDA Historic Multiple 6.5 8.3 10.3 14.4 13.6 13.6 12.4 9.0 20.2 18.2 11.5 10.6 9.7 9.6 8.7 8.3 01 1) 01 8) 02 3) Avient Specialty Other Specialty / SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 20% 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 B ILL ION 34% 38% 20% END MARKET REGION 27 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 B ILL ION 52% 35% 28 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 29 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.

The amounts and values for the facility(ies) identified below are accurate, based on reasonable estimates using available data.  The data for the facility(ies) that I represent are hereby submitted to the programs identified below using the Single Window Reporting Application. I also acknowledge that the data will be made public.

A larger processing window will account for the lot to lot changes between materials, without having to make process changes.3 Setting the Beginning Variables • Injection Pressure = Maximum of machine - Should not be pressure limited • Injection Velocity = Maximum of machine - This is for the injection velocity curve starting point - If flashing is an issue start slower and then increase • Injection Cut-Off Time = 15 seconds - This is only a limiting factor, needs to be above 10 seconds for velocity graph • Hold Pressure = 0 - Need to get 95% full part with a hold pressure of 0 • Hold Time = 10-15 seconds - Need to ensure gate is frozen • Screw Speed = 90% of Maximum - Unless shear sensitive material, if shear sensitive, set RPMs to optimum • Cooling Time = 10–15 seconds • Shot Size = 50% of calculated part volume • Decompression = .25in • Transfer Position = High enough to ensure a cushion - Cushion size does not matter but there must be a cushion to keep a constant pressure on the melt during hold time - Typically 0.25" is sufficient • Back Pressure = 800-1000 plastic pressure - 100–150 hydraulic pressure - Unless specified by material data sheet Determining Shot Size The shot size should be determined by calculating the combined volume of the parts and the runner system. If the material is shear-sensitive, consult the material data sheet or processing guide for instructions to set recovery time • The cooling time should only be 1–2 seconds longer than the screw recovery time, unless dictated by dimensional stability or part thickness Minimize Clamp Pressure This step is done to reduce the amount of energy used by the machine

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AVIENT: WHO WE ARE 38 21 9 34 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 8,800+ employees 100+ manufacturing plants Key Financial Data 2022E Sales $5.1 billion 2022E EBITDA $635 million 2022E EPS $3.50 >70% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 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. Global Compact & fulfilled Communication of Progress (COP) requirements • New Sustainability Strategy overview page including our 2022 AIP ESG metrics • New ESG Performance page with ESG ratings, awards, and certifications • Increased disclosures on carbon emissions, including disclosure of Climate Change Scenario Analysis • Added new Product Stewardship and Chemical Management policies • Enhanced data reporting for Workforce Demographics • Improved social disclosures on human rights, dependent care and special leave and strategic training management 2021 SUSTAINABILITY REPORT Launching integrated sustainability website in parallel with report Aligned with leading reporting frameworks 13 ESG PERFORMANCE & AWARDS 14 16th ENVIRONMENTAL SOCIAL GOVERNANCE 1 (as of 6/30/22) 2022 O U T LO O K $429 $490 $3.05 $3.50 FY 2022 GUIDANCE (TOTAL COMPANY: CURRENT PORTFOLIO) 16 Sales Adjusted Operating Income $4,819 $5,100 + 6% Adjusted EPS + 14% + 15% (in millions) (in millions) (+ 9% excluding FX) (+ 18% excluding FX) (+ 20% excluding FX) 17 CASH FLOW / LEVERAGE ($ millions) 2022E Cash Flow from Operating Activities 400$ Less: Run-Rate CapEx (90) CapEx for Clariant Integration (10) CapEx for IT System Upgrade (15) Total CapEx (115) Free Cash Flow 285$ Adjusted EBITDA 635$ Net Debt / Adjusted EBITDA 1.6x 18 DYNEEMA / DISTRIBUTION UPDATES • Strong performance so far in 2022 in-line with our modeling • Acquisition to be finalized as early as September 1, pending standard regulatory process and closing conditions • Encouraging interest thus far from potential buyers for world-class business with a strong track record • Second round bids due in August DISTRIBUTION 19 PRO FORMA MODELING UPDATE 2022E ($M) Revenue 5,100$ 415$ 5,515$ (1,635)$ 3,880$ Adjusted EBITDA 635 130 765 (109) 656 EBITDA % 12% 31% 14% 7% 17% Adj. 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.

We hold ourselves accountable—to each other and our stakeholders--and take personal responsibility for our actions and results. 12 Accurate Information, Data and Records Complete, accurate and reliable records are essential to good decisions and efficient operations. Where appropriate, direct your ideas to Avient’s Legal department for patent, copyright or trade secret protection. 15 Privacy, Personal Information and Data Protection Personal privacy is important to all of us. This includes how you collect, use, store, share, and preserve or delete or dispose of personal data.

Q1 2023 (TOTAL COMPANY) $846 $829 $134 $143 17.3% (in millions) $0.63 $0.76 Adjusted EPS (in millions) + 7% + 21% Sales Adjusted EBITDA Adjusted EPS 6 - 2% 15.8% +150 bps Q1 2024 SEGMENT PERFORMANCE (COLORS, ADDITIVES & INKS) $537 $515 $91 $97 18.8% (in millions) (in millions) + 7% 7 - 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% 8 + 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) 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 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% 36% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 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 34% 37% 21% END MARKET REGION 19 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 BILLION 52% 35% 20 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) 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.