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 $3.45 billion 2023E EBITDA $530 million 2023E EPS $2.40 100% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 3 Guidance as of February 15, 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. EPS (1) $0.14 $2.67 $3.04 2006 2018 2022PF TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards 90th percentile 84th ESG Ratings Performance 3 1 4 14 PEOPLE C U L T U R E I S E V E R Y T H I N G Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $17 million raised since 2010 Diversity & Inclusion 15 2022 RE SU LT S Q4 EBITDA BRIDGE (PRO FORMA TOTAL COMPANY) 17 $ millions CAI: Price / Mix 42 Inflation (20) SEM: Price / Mix 14 Inflation (10) Net Price Benefit 26 Wage and Energy Inflation (13) Clariant Color Integration Synergies 4 Incentives, Other Employee Costs 21 FX (10) Q4 2022 $107 Adjusted EBITDA Q4 2021 $ 132 Demand (50) Russia Import Sales (3) • Demand contraction especially prevalent in EMEA and Asia • Pricing continues to cover inflation of raw materials, wages and energy PROVEN TRACK RECORD OF STRONG AND IMPROVING FREE CASH FLOW GENERATION 18 • Periods of economic weakness have driven higher levels of cash generation due to working capital management • Anticipate continued strong free cash flow generation and conversion despite global uncertainty 78% 78% 80% 80% 81% 78% 84% 83% 80% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 2014 2015 2016 2017 2018 2019 2020 2021 2022 0 50 100 150 200 250 300 350 400 F re e C as h F lo w C o n ve rs io n F re e C as h F lo w FCF $ AVNT FCF Conversion % S&P FCF Conversion % Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. 2020 is pro forma for Clariant Color and 2022 is pro forma for Avient Protective Materials. $600 $592 2021 2022 $3.02 $3.04 2021 2022 FULL YEAR 2022 PERFORMANCE (TOTAL COMPANY PRO FORMA) 19 Sales Adjusted EBITDA $3,712 $3,653 2021 2022 -2% Adjusted EPS -1% + 1% (in millions) (in millions) (+4% excluding FX) (+5% excluding FX) (+9% excluding FX) FULL YEAR 2022 SEGMENT PERFORMANCE 20 CAI $2,402 $2,355 Sales ($ in millions) $409 $402 EBITDA SEM Pro Forma $1,308 $1,300 Sales $278 $272 EBITDA (+4% excluding FX) - 2% -1% (+5% excluding FX) - 2% (+4% excluding FX) - 2% (+2% excluding FX) PRO FORMA FULL YEAR EPS BRIDGE 21 Pro Forma 2021 Adjusted EPS 3.02$ Foreign Currency (0.23) Russia Import Sales (0.07) Outdoor High Performance (0.13) Color, Additives and Inks 0.18 Specialty Engineered Materials 0.24 Corporate Costs / Other 0.03 Pro Forma 2022 Adjusted EPS 3.04$ FULL YEAR EBITDA BRIDGE (PRO FORMA TOTAL COMPANY) 22 $ millions CAI: Price / Mix 247 Inflation (176) SEM: Price / Mix 121 Inflation (77) Net Price Benefit 115 Wage and Energy Inflation (47) Clariant Color Integration Synergies 23 Incentives, Other Employee Costs 43 FX (34) Full Year 2022 $592 Adjusted EBITDA Full Year 2021 $ 600 Demand (99) Russia Import Sales (9) • Demand primarily impacted by China lockdowns, 4th quarter industrywide destocking and declining consumer sentiment • Pricing outpaced inflation of raw materials, wages and energy 2023 G U IDA N CE $125 $530 Q1 FY $0.55 $2.40 Q1 FY 2023 GUIDANCE 24 Sales Adjusted EBITDA $845 $3,450 Q1 FY Adjusted EPS (in millions) (in millions) CASH FLOW / BALANCE SHEET 25 • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x K E Y G R O W T H D R I V E R S A N D T R A N S F O R M E D P O R T F O L I O GROWTH DRIVERS: PROVEN SUCCESS 27 (1) Pro forma for the acquisition of Avient Protective Materials (APM) COMPOSITES $51 $84 $212 $668 2016 2018 2020 2022 Long Term Growth Rate 10% Organic CAGR 10% HEALTHCARE $108 $113 $231 $293 2016 2018 2020 2022 Long Term Growth Rate 8-10% Organic CAGR 11% ASIA/EMERGING REGIONS $265 $358 $726 $830 2016 2018 2020 2022 Long Term Growth Rate 5% Organic CAGR 12% $340 $455 $790 2016 2018 2020 2022 $1,175 SUSTAINABLE SOLUTIONS Long Term Growth Rate 8-12% Organic CAGR 11% (1) (1)(1) (Sales in $ millions) #1 Color Formulator Dyneema® - World’s Strongest Fiber™ #1 in Composites applications for outdoor high performance #1 in Performance Inks Customized solutions 140+ PhDs on staff Rapid development of innovative products Extensive patent (2,500+) portfolio 33% Vitality Index Better-positioned toward stable, high-growth end markets Consumer, packaging, healthcare and defense comprise nearly 60% of sales Agnostic to raw materials, helping all customers achieve their goals Broad portfolio of diversified sustainable solutions 90%+ of our innovation pipeline invested in sustainable solutions Long-term growth rate well above GDP with expectations of 8-12% LEVERAGING OUR TRANSFORMED PORTFOLIO 28 Healthcare 8% Packaging 24% Consumer 20% Building & Construction 10% Industrial 15% Transportation 9% Energy 4% Telecom. 4% 2022 PF $3.65B sales Defense 6% Leading Positions Sustainable SolutionsDiversified IndustriesSpecialty Formulator (1) 2022 Pro forma for the acquisition of Avient Protective Materials (2) 2020 Pro forma for the acquisition of Clariant Color (1)(2) (1) $340M $455M $790M 2016 2018 2020PF 2022PF $1,175M P EE R C O M PAR IS O N S AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of February 13, 2023 Note: Avient reflects 2023 estimated revenue of $3,450 and estimated run-rate CAPEX of $110M. 30 3 2 3 3 4 4 3 4 5 5 5 6 7 7 A vi en t K W R P P G F U L A V Y R P M F M C H U N H X L C E E C L A S H S C L E M N FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of February 13, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 31 79 87 81 79 76 73 90 77 76 75 73 64 59 33 A vi en t K W R P P G F U L A V Y R P M F M C C E A S H H X L 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 February 13, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.89.

Available in masterbatch solutions, these beautiful effects are formulated with: • organic waste materials, such as almond shells • glitter flakes • synthetic fibers • special effects, such as speckles and pearlescents KEY CHARACTERISTICS • Available in standard or custom finishes • Cost effective replacement for marble, granite, and other expensive and heavy materials across many applications • No additional production investment required MARKETS AND APPLICATIONS Shades of Nature colorants can add depth and dimension to: • Packaging – including premium cosmetics or luxury caps and closures • Transportation – interior or exterior automotive trim and components • Consumer goods – toys, outdoor goods, furniture • Small and large household appliances PRODUCT BULLETIN NAME COLOR TONE EFFECTS EU FDA TOYS T STABILITY Fossil Beige Fibers/Speckles YES NO YES 280°C Lavender Purple Blue Fibers YES NO YES 280°C Rosewood Light Pink Fibers NO NO NO 280°C Emerald Creek Green Special Effects YES YES YES 280°C Mother of Pearl White Pearl Special Effects YES YES YES 280°C Invigorate Yellow Green Natural Waste NO NO YES < 210°C Interstellar Brown Special Effects YES YES YES 280°C Unrefined Grey Glitter NO NO NO 230°C Reflection Blue Glitter NO NO NO 230°C Coral Sand Orange Fibers NO NO NO 280°C REGULATORY INFORMATION IMPORTANT NOTE The above technical and regulatory information is based on the formulation of the current 10 colors in the palette.

One such application includes the underbody braces that contribute to vehicle stability. Engineers chose this third option because it met all of the technical requirements and had the best combination of properties.

Continue fostering our Great Place to Work® culture Strategic ObjectivesStrategic Objectives Long Term Growth Rates Growth DriversGrowth Drivers $340 $455 $790 $1,175 2016 2018 2020 2022 $51 $84 $212 $668 2016 2018 2020 2022 $108 $113 $231 $293 2016 2018 2020 2022 $265 $358 $726 $830 2016 2018 2020 2022 8-12% 10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable GrowthProfitable Growth Great Place to WorkGreat Place to Work 5.4% 11.5% 16.2% 2006 2018 2022 EBITDA Margins $0.14 $2.67 $3.04 2006 2018 2022 Adjusted EPS 2022 data is pro forma for acquisition of Avient Protective Materials and Distribution divestiture TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards 90th percentile 84th ESG Ratings Performance 3 1 5 5 Innovation is the lifeblood of a specialty company. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 37 79 89 83 81 76 73 90 82 77 76 74 70 58 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 May 31, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $36.50. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 38 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.6 13.2 13.0 12.8 11.3 8.6 17.9 16.8 10.7 8.8 8.8 8.7 7.5 6.9 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 S C L C E A S H 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.

EPS: $1.00 First Quarter Financial Highlights • 14th consecutive quarter of double digit adjusted earnings per share growth • 29 percent increase in adjusted EPS  34 percent increase in Specialty operating income  Growth from all regions  Virtually all organic growth • Strengthened our financial position Page 12 • Total Debt at 3/31/13 Less: Cash Net Debt • Available Liquidity Cash ABL Availability Total Liquidity • Net Debt / EBITDA = 2.7x* $169 285 $454 $1,056 169 $887 $50 $360 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Debt Maturities As of March 31, 2013 ($ millions) Page 13 Coupon Rates: 7.500% 7.375% 5.250% *Pro Forma TTM with no synergies related to Spartech acquisition & excludes resin assets Debt Maturities & Liquidity Summary – 3/31/13 Cash Balance = $169M Net Debt / EBITDA* = 2.7x • Repurchased 840k shares in Q1 2013 • 19.1 million shares are available for repurchase under the current authorization Share Repurchase • Introduced a quarterly dividend in Q1 2011 and increased in Q1 2012 (25%) and Q1 2013 (20%) • Objective of maintaining and growing Dividends • Expanding our sales, marketing, and technical capabilities is top priority • Investing in operational and LSS initiatives (including synergy capture) • CAPEX Organic Growth • Targets that expand our: • Specialty offering • End market presence • Geographic footprint • Synergy opportunities • Adjacent material solutions Acquisitions *TTM with no synergies related to the Spartech acquisition Use of Cash Page 14 Why Invest In PolyOne? Strong past performance demonstrates that our strategy and execution are working • Megatrends align with our strengths • Innovation and services provide differentiation and competitive advantage • Strong and proven management team driving growth and performance • Addressable market exceeds $40 billion The New PolyOne: A Specialty Growth Company 2015 Target: $2.50 Adjusted EPS Page 15 Schedule I Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S. Platform operating income mix percentage 2005Y* 2006Y* 2007Y* 2008Y* 2009Y* 2010Y* 2011Y* Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions 75.7 64.2 65.8 31.3 33.1 54.0 62.4 Distribution 19.5 19.2 22.1 28.1 24.8 42.0 56.0 SunBelt Joint Venture 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate (51.5) 34.5 (73.3) (425.1) 7.9 (27.7) 20.3 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Less: Corporate operating expense (income) 51.5 (34.5) 73.3 425.1 (7.9) 27.7 (20.3) Operating income excluding Corporate $ 191.8 $ 199.1 $ 153.3 $ 133.7 $ 129.2 $ 202.3 $ 212.7 Specialty platform operating mix percentage 2% 6% 20% 34% 35% 43% 42% Platform operating income mix percentage 2012Y* 2012PF** Global Specialty Engineered Materials $ 47.0 $ 47.7 Global Color, Additives and Inks 66.8 81.6 Designed Structures & Solutions -- 20.9 Specialty Platform $ 113.8 $ 150.2 Performance Products and Solutions 74.9 37.4 Distribution 66.0 66.0 Corporate (87.6) ( 87.9) )Operating income GAAP $ 167.1 $ 165.7 Less: Corporate operating expense 87.6 87.9 Operating income excluding Corporate $ 254.7 $ 253.6 45% 60% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment. ** Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and excludes the Resin business assets.

In addition, the new SynPlast option for flexible PVC features supply stability to help counteract historic supply chain disruptions of 810TM, and is formulated for use in wire and cable and automotive slush molding PVC applications.

ABOVE GROUND SWIMMING POOL C O M P O S I T E S I D E W A L L • Corrosion resistance to withstand salt water pool treatment • UV resistance for durability over years of use • Weight reduction vs. traditional metal to reduce shipping costs and simplify installation • Field tested for 3 years to prove Polystrand solution provides excellent UV, creep, and corrosion resistance • Reduced weight by 50% compared to metal • Rolled product enabled standard shipping vs. coiled steel sidewalls that require LTL delivery Polystrand™ thermoplastic composite laminate (4-ply) with integrated decorative film KEY REQUIREMENTS WHY AVIENT?

S U R G I C A L T O R Q U E W R E N C H SURGICAL DEVICE MANUFACTURER • Excellent wear resistance and lubricity • Easy-to-mold • Good chemical resistance, excellent disinfection performance • Dimensional stability • Formulated a specialty thermoplastic that retained physical properties and dimensional stability under various testing conditions • Provided a custom solution faster than competitors to support accelerated speed to market Edgetek™ Engineered Polymer Formulation KEY REQUIREMENTS WHY AVIENT?

MEDICAL DEVICE MANUFACTURER D I S P O S A B L E M E D I C A L T R A Y • Excellent wear resistance that can sustain a minimum of 2,000 rotations • Withstand freezing temperature as low as -20°C • Can be sterilized by EtO • Delivered excellent wear resistance performance to fully meet customer’s request • Provided dimensional stability required for this medical application • Reduced friction to lower the noise during operation LubriOne™ Internally Lubricated Formulation KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION WEAR RESISTANCE + DIMENSIONAL STABILITY LEARN MORE Copyright © 2022, Avient Corporation.

CABLE GUARD C O M P O U N D A R C H E R Y B O W • Consistent quality that withstands extreme outdoor conditions • Dimensional stability to improve durability and extend product life • Lightweight material for easy customer handling • Strong, long-lasting quality • Maintained stiffness and straightness while upholding performance and aesthetic specifications • Provided dimensional stability necessary for outdoor applications • High strength-to-weight ratio enabled high performance without adding significant weight Glasforms™ Pultruded Carbon Fiber Rod KEY REQUIREMENTS WHY AVIENT?