Use of Non-GAAP Measures Page 3 PolyOne Commodity to Specialty Transformation Page 4 • Continue specialty transformation • Targeting $2.50 Adjusted EPS by 2015, nearly double 2013 EPS • Drive double digit operating income and adjusted EPS growth • 17 consecutive quarters of double- digit adjusted EPS growth • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Established aggressive 2015 targets • Steve Newlin Appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2013 2014 and beyond -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 Russell 2000 Dow Jones Chemical All time high of $38.38 March 7th, 2014 • 17 consecutive quarters of double digit EPS growth • 49% CAGR adjusted EPS expansion 2006-2013 • 2013 stock price increased 73% versus 30% growth in the S&P • More than seven fold increase in market cap: $0.5b $3.6b Strategy and Execution Drive Results Page 5 Appliance 4% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 5% Consumer 10%Packaging 16% Industrial 12% HealthCare 11% Transportation 18% Misc. 2% United States 66% Europe 14% Canada 7% Asia 6% Latin America 7% PP&S 20% Specialty 53% Distribution 27% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 1.31 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010 2011 2012 2013 2015 Target Ad ju st ed E ar ni ng s P er S ha re 2013 Revenues: $3.8 Billion End Markets 2013 Revenues: $3.8 Billion EPS Page 6 PolyOne At A Glance Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 2015 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty Specialty OI $5M $46M $87M $195M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 7 2006 2013 2015 “Where we were” “Where we are” Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.2% 12 – 16% Global Specialty Engineered Materials 1.1% 9.3% 12 – 16% Designed Structures & Solutions -- 5.6% 8 – 10% Performance Products & Solutions 5.4% 7.2% 9 – 12% Distribution 2.6% 5.9% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 62% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.1% 15% 4) Adjusted EPS Growth N/A 31% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 8 Bridge To $2.50 Adjusted EPS By 2015 2015 EPS: $2.50 2013 EPS: $1.31 Mid single digit revenue CAGR Page 9 Mergers & Acquisitions Spartech accretion Incremental share buybacks Ongoing LSS Programs (50-100 bps/yr) Accelerated Innovation & Mix Improvement Innovation Drives Earnings Growth $20.3 $52.3 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years Page 10 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 43.0% 2006 2013 Healthcare Consumer Packaging and Additive Technology Transportation Page 11 Unique and Innovative Solutions that Help Customers Win https://www.dropbox.com/sh/dwe4t8aacvhb8ui/uD3p_bdglP/Presentation revise pics/GLS Beverage can closure XO 2.jpg https://www.dropbox.com/sh/dwe4t8aacvhb8ui/-YgkycKypw/Anti-Counterfeiting release & images/GN1979.JPG Net Debt / EBITDA* = 1.8x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Significant Debt Maturities As of December 31, 2013 ($ millions) Page 12 Coupon Rates: 7.500% 7.375% 5.250% Debt Maturities & Pension Funding – 12/31/13 *TTM 12/31/2013 ** includes US-qualified plans only 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2013 Pension Funding** As of December 31, 2013 Free Cash Flow and Strong Balance Sheet Fund Investment •Targets that expand our: • Specialty offerings •End market presence •Geographic footprint •Operating Margin • Synergy opportunities •Adjacent material solutions •Expanding our sales, marketing, and technical capabilities • Investing in operational and LSS initiatives (including synergy capture) •Manufacturing alignment Organic Growth Share Repurchases Dividends Acquisitions Page 13 $0.16 $0.20 $0.24 $0.32 $0.00 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend • Repurchased ~5 million shares in 2013 • 15 million shares are available for repurchase under the current authorization The New PolyOne: A Specialty Growth Company 2015 Target: $2.50 Adjusted EPS Why Invest In PolyOne? Reconciliation to Condensed Consolidated Balance Sheets 2013 Short-term debt and current portion of long-term debt $ 12.7 Long-term debt 976.2 Less cash and cash equivalents (365.2) Net debt $ 623.7 Adjusted EBITDA 2013 Income before income taxes $ 151.0 Interest expense, net 63.5 Depreciation and amortization 108.8 Special items in EBITDA 31.7 Adjusted EBITDA $ 355.0 2 Platform sales and operating income (OI) 2006Y* 2013Y Global Specialty Engineered Materials sales $ 345.3 $ 615.5 Global Color, Additives and Inks sales 531.8 852.3 Designed Structures and Solutions sales - 597.4 Specialty Platform sales 877.1 2,065.2 Performance Products and Solutions sales 1,166.2 773.2 PolyOne Distribution sales 732.8 1,075.2 Corporate and eliminations (153.7) (142.4) Total sales $ 2,622.4 $ 3,771.2 Global Specialty Engineered Materials OI $ 3.9 $ 57.2 Global Color, Additives and Inks OI 8.9 104.0 Designed Structures & Solutions OI - 33.4 Specialty Platform OI 12.8 194.6 Performance Products and Solutions OI 64.2 56.0 PolyOne Distribution OI 19.2 63.3 Sunbelt Joint Venture OI 102.9 - Corporate and eliminations (4.6) (52.4) Special items in OI 39.1 (30.0) Operating income GAAP 233.6 231.5 Sunbelt equity income (107.0) - Special items in OI (39.1) 30.0 Adjusted operating income $ 87.5 $ 261.5 Global Specialty Engineered Materials - OI % of sales 1.1% 9.3% Global Color, Additives and Inks - OI % of sales 1.7% 12.2% Designed Structures & Solutions - OI % of sales - 5.6% Specialty platform OI - % of sales 1.5% 9.4% PP&S operating OI - % of sales 5.5% 7.2% Distribution OI - % of sales 2.6% 5.9% PolyOne OI adjusted - % of sales 3.3% 6.9% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

Avient corporation first quarter 2023 results AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) F E B R UA RY 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 Objectives Long Term Growth Rates Growth Drivers $340 $455 $790 $1,135 2016 2018 2020 2023 $51 $84 $212 $645 2016 2018 2020 2023 $108 $113 $231 $230 2016 2018 2020 2023 $265 $358 $726 $725 2016 2018 2020 2023 8-12% 8-10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable Growth Great Place to Work 5.4% 10.9% 16.0% 2006 2014 2023 EBITDA Margins $0.14 $1.93 $2.36 2006 2014 2023 Adjusted EPS TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile 5 Avient CDP Score: A- FE BRUARY 14 , 2024 W E BCAS T P RE S E N TAT I O N DR. ASHISH KHANDPUR PRESIDENT & CEO 7 8 PORTFOLIO TRANSFORMATION 8 7% 46% 66% 87% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT D A Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications SUSTAINABILITY AS A GROWTH DRIVER 9 LONG-TERM REVENUE GROWTH DRIVERS Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other 60%+ Key Growth Drivers Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other 0–2% Avient 6% END MARKET OBSERVATIONS (% OF COMPANY SALES) ENERGY 5% DEFENSE 7% TELECOMMUNICATIONS 4% HEALTHCARE 7% 10 TRANSPORTATION 10% INDUSTRIAL 16% BUILDING & CONSTRUCTION 9% CONSUMER 19% PACKAGING 23% 11 REGIONAL OBSERVATIONS (% OF COMPANY SALES) 11 US & Canada Latin America EMEA Asia 41% 36% 18% 5% Q 4 2023 RE S U LT S Q4 2023 PERFORMANCE VS.

IR Deck - AVNT-2024.06.30 (Earnings) AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) AU G U S T 6 , 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. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Disruptions or inefficiencies in our supply chain, logistics, or operations; • Changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Demand for our products and services; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2023 under Item 1A, “Risk Factors.” EBITDA Margin 16.9% +100 bps Q 2 2024 R ES U LT S Q2 2024 PERFORMANCE VS.

Düşündüğünüz herhangi bir eylemin uygunluğu konusunda herhangi bir sorunuz varsa Avient Hukuk Departmanı ile iletişime geçin. 9 İçindekiler 2021 Revize Antitröst Politikası Rychlé rady: Antimonopolní zásady CO DĚLAT a CO NEDĚLAT CO DĚLAT ✓ Okamžitě písemně nahlásit právnímu oddělení společnosti Avient kontakt s konkurenty, kdy byly zjišťovány nebo projednávány ceny nebo jiné informace citlivé s ohledem na konkurenci. ✓ Okamžitě ukončit jakékoli rozhovory, při kterých konkurent zavede řeč na cenové záležitosti nebo jiná zakázaná témata a pokus o takový rozhovor písemně nahlásit právnímu oddělení společnosti Avient. ✓ Zdokumentovat zdroj a datum získání ceníků veškeré konkurence a dalších konkurenčních údajů obsažených ve vašich záznamech. ✓ Okamžitě opustit jakékoli schůzky, na kterých konkurenti diskutují o cenách nebo zákaznících. Okamžitě po odchodu si zapsat čas, místo a zúčastněné strany, zápis podepsat, opatřit datem a předat právnímu oddělení společnosti Avient. ✓ Před uskutečněním obchodu s konkurentem se poradit s právním oddělením společnosti Avient. CO NEDĚLAT × Diskutovat s konkurenty o cenách (minulých, současných, budoucích), cenových strategiích, nabídkách, podmínkách prodeje, zákaznících apod. × Vyměňovat si s konkurenty ceny nebo jiné konkurenční informace, přímo nebo přes dohodnutého prostředníka. × Ptát se konkurentů na ceny nebo jiné konkurenční informace o konkurenci nebo sdělovat konkurentům současné nebo zamýšlené ceny společnosti, na požádání nebo za jiných okolností. × Diskutovat s konkurentem, kterým zákazníkům společnost nemá v úmyslu prodávat nebo od kterých dodavatelů společnost nemá v úmyslu nakupovat. × Dohodnout se s konkurenty na rozdělení oblastí, produktů nebo zákazníků. × Dohodnout se s kýmkoli na neobchodování s další stranou, nabádat k tomu nebo to nařizovat. × Diskutovat o konkrétním strategickém plánování nebo marketingových informacích, včetně aktuální kapacity a vytížení, inovací a přestaveb, budoucích produktových nebo tržních plánů nebo jiných citlivých s ohledem na konkurenci.

Dans les limites de la gestion journalière, la société est également valablement représentée par un (des) délégué(s) à cette gestion. Avant de participer à l'assemblée, les actionnaires ou leurs mandataires sont tenus de signer la liste de présence, laquelle mentionne le nom, le(s) prénom(s) et l'adresse ou la dénomination et le siège des actionnaires et le nombre d'actions qu'ils représentent. (...) Peter Van Melkebeke Notaire Bi jla ge n bi j h et B el gi sc h St aa ts bl ad - 02 /1 2/ 20 20 - An ne xe s du M on ite ur b el ge

We also track physical security incidents and manage those through the EH&S MS. Companies acquired by Avient go through a rigorous EH&S integration process. Avient’s Vice President of EH&S and SVP of Global Operations and Process Improvement are responsible for reporting to the EH&S Committee of the Board of Directors.

S/ STEPHEN D. s/ Stephen D. s/ Bradley C.

Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources Certificate No: 65537 Certification Date: 29 SEP 2023 Effective Date: 27 FEB 2025 Expiration Date: 27 SEP 2026 Revision Date: 05 MAR 2025 Dominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources 33587 Walker Road Avon Lake OH 44012 United States Avient Corporation HQ Responsible Care Corporate Support Activities in Sr. Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources 33587 Walker Road Avon Lake OH 44012 United States Avient Corporation Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Kornkamp 50 Ahrensburg Schleswig- Holstein 22926 Germany Avient Corporation - Albany Design and Manufacture of Colorants and Additives for Plastics 4 Rothwell Ave, PO Box 300-009 Auckland 0632 New Zealand Avient Corporation Avon Lake Color Design and Manufacture of Specialty Engineered Thermoplastics 33587 Walker Road, Building 416 Avon Lake OH 44012 United States Avient Corporation Design and Manufacture of Specialty Engineered Thermoplastics Pol.

Pricing/Payment Terms 3.1 Supplier shall deliver the Goods and/or perform the Services against the price(s) mentioned in the Agreement. Supplier will provide the (pre-) registration number(s) to Avient. 12. Miscellaneous 20.1 If any provision(s) of these Terms of Purchase should be or become ineffective or invalid, the other provisions will not be affected thereby.

Microsoft PowerPoint - PolyOne Investor Presentation 5.4.20_v8 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • P E O P LE P RO D U CT S P LA N E T P E RF O R MAN C E •• •• •• JVs Performance Products & Solutions Distribution Specialty     To be the world’s premier provider of specialized polymer materials, services and solutions To be the world’s premier provider of specialized polymer materials, services and sustainable solutions • • • • • • • • • • • • • • 2016 2017 2018 2019 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Bio-derived Content Reduced Energy Use VOC Reduction $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth PolyOne Corporation 33 Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results. Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** Q1 2019*** 2019 Q1 2020 Net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 22.4 $ 75.5 $ 33.1 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 12.2 61.7 9.6 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (1.2) (5.9) (1.0) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 33.4 $ 131.3 $ 41.7 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 78.2 77.7 86.7 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 0.43 $ 1.69 $ 0.48 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. ** Pro forma for sale of Designed Structures and Solutions segment (DSS). *** Pro forma for sale of Performance Products and Solutions segment (PP&S).