PolyOne Corporation Page 4 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • 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 • Substantial EPS growth from $0.13 to all-time high of $1.80 • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Specialty mix expands to 65% of Operating Income – strongest mix of earnings in history • Accelerating growth • Deliver consistent double digit annual EPS growth • Maintain >35% vitality index • Pursue strategic acquisitions that expand specialty offerings and geographic breadth • Invest and grow current and next generation talent PolyOne Corporation Page 5 Appliances 5% Building & Construction 12% Consumer 10% Electrical & Electronics 5% Healthcare 11% Industrial 14% Packaging 14% Transportation 20% Wire & Cable 9% Distribution 28% PP&S 20% Specialty 52% United States 69% Europe 13% Canada 7% Asia 6% Latin America 5% 2014 Revenues: $3.8 Billion End Markets 2014 Revenues: $3.8 Billion PolyOne At A Glance $13 $31 $46 $46 $92 $96 $122 $195 $242 2006 2007 2008 2009 2010 2011 2012 2013 2014 Specialty Operating Income ($M) PolyOne Corporation Page 6 Old PolyOne *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 65% 69% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 2014 Q1 2015 2020 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 80%+ Specialty OI $5M $46M $87M $195M $242M $60M Mix Shift Highlights Specialty Transformation Transformation 2020 Platinum Vision Platinum Vision PolyOne Corporation Page 7 Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence PolyOne Corporation Page 8 -100% 0% 100% 200% 300% 400% 500% 600% Strategy and Execution Drive Results $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 '06 '07 '08 '09 '10 '11 '12 '13 '14 ‘06-‘14 Adjusted EPS CAGR = 40% Adjusted EPS Share Price vs.

PolyOne Corporation Page 4 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2015 2016 and beyond • 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 • Substantial EPS growth from $0.13 to all-time high of $1.96 • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Specialty mix expands to 65% of Operating Income – strongest mix of earnings in history • Deliver consistent double digit annual EPS growth • Maintain >35% vitality index • Pursue strategic acquisitions that expand specialty offerings and geographic breadth • Invest and grow current and next generation talent PolyOne Corporation Page 5 Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence Associates PolyOne Corporation Page 6 26 Consecutive Quarters of EPS Growth PolyOne Corporation Page 7 2015 Revenues: $3.4 Billion End Markets 2015 Revenues: $3.4 Billion PolyOne At A Glance $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Adjusted EPS United States 66% Europe 13% Canada 7% Asia 7% Latin America 7% Appliances 4% Building & Construction 12% Consumer 10%Electrical & Electronics 5% Healthcare 11% Industrial 14% Packaging 13% Textiles 2% Transportation 20% Wire & Cable 9% $1.96 Distribution 29% PP&S 20% CAI 23% SEM 15%DSS 13% PolyOne Corporation Page 8 Old PolyOne *Operating Income excludes corporate charges and special items 2% 43% 65% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 80%+ Specialty OI $5M $87M $229M Mix Shift Highlights Specialty Transformation Transformation 2020 Platinum Vision Platinum Vision PolyOne Corporation Page 9 Color and Engineered Materials at the Heart of Specialty Transformation OPERATING MARGIN 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 14.7% 16.7% 17.0% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Platinum Vision COLOR, ADDITIVES AND INKS 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12.1% 14.7% 16.6% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 1Q'16 2020 Platinum Vision SPECIALTY ENGINEERED MATERIALS PolyOne Corporation Page 10 2006 1Q 2016 2020 “Where we were” “Where we are” Platinum Vision 1) Operating Income % Specialty: Color, Additives & Inks 1.7% 17.0% 20%+ Specialty Engineered Materials 1.1% 16.6% 20%+ Designed Structures & Solutions N/A 2.5% (TTM) 8 – 10% Performance Products & Solutions 5.5% 11.9% 12 – 14% Distribution 2.6% 6.5% 6.5 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 61% 80%+ 3) ROIC* 5.0% 12.0% 15% 4) Adjusted EPS Growth N/A 22% Double Digit Expansion Proof of Performance & 2020 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period PolyOne Corporation Page 11 Therma-Tech™ & Sheet GEON™ Vinyl Polymer ColorantsTherma-Tech™ TPE’s & Film TPE + OnForce™ Gravi-Tech™ Page 11 Film Target End Markets… Healthcare PolyOne Corporation Page 12 TPE + OnForce (SEM) OnForce (SEM) Glasforms (SEM) TPE Vibration Dampening (SEM/GLS) TPE & Film (SEM + DSS) Glasforms (SEM) Polymer Colorants (CAI) Thermatech (SEM) Thermoplastic Elastomers (SEM) TPE + OnForce (SEM) OnForce (SEM) Thermoplastic Elastomers (SEM) Glasforms (SEM) Polymer Colorants (CAI) Sheet (DSS) Source: Outdoor Industry Association Target End Markets… Outdoor High Performance PolyOne Corporation Page 13 Sound & Vibration Management Fuel Handling Systems Interior & Exterior Trim Structural Braces & Brackets Interior Structural Components Lighting Air management Electronics & Cameras Fluid Handling Target End Markets… Automotive Underhood Components Roof Systems PolyOne Corporation Page 14 Target End Markets… Packaging PreservaPak™ OnColor™ Smart Batch™ VersaFlex™ TPE Cap Liner ColorMatrix™ Amosorb™ Oxygen Scavenger ColorMatrix™ Ultimate™ UV Light Barrier OnCap™ Laser Marking Additives PolyOne Corporation Page 15 Innovation Drives Earnings Growth *Specialty Platform revenue from products introduced in last five years $20 $53 2006 2015 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* 14% 34% 2006 2015 CAI & SEM Gross Margin 12% 43% 2006 2015 Target ≥ 35% Innovation Pipeline Potential PolyOne Corporation Page 16 2,883 2,414 2006 2015 Volume (lbs in millions) -16% $103 $192 2006 2015 Commercial, R&D and Marketing Spending ($M) +86% $303 $721 2006 2015 Adjusted Gross Profit ($M) +138% Ours is Not a Cost Cutting Story PolyOne Corporation Page 17 Design and Service as a Differentiator Right Material & Color Desired Product Design Appropriate Manufacturing Process Delivering Concept to Commercialization Connecting the Dots with iQ Design Labs and InVisiO Color Design PolyOne Corporation Page 18 Customer First Through World-Class Service Strengthening relationships through:  Providing LSS services to small/medium sized customers  Providing training in Customer Centric Selling Skills with customers World’s Best Business Process Excellence Program in 2012* World’s Best Start-up program for Lean Six Sigma Deployment in 2009* 81% 93% 2006 2015 16.2% 9.7% 2006 2015 On-Time Delivery Working Capital % of Sales  52% of associates trained in LSS  Five consecutive years – CFO Magazine Best Working Capital Management in the chemical industry Commitment to Operational Excellence PolyOne Corporation Page 19 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 1Q 2016 Pension Funding** As of March 31, 2016 Debt Maturities & Pension Funding Net Debt / Adjusted EBITDA*= 2.5x ** includes US-qualified pension plans only*TTM 3/31/2016 $550 $600 $200 $300 $400 $500 $600 $700 $800 2022 2023 Debt Maturities As of March 31, 2016 ($ millions) Coupon Rate: 3.750% 5.250% PolyOne Corporation Page 20 Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return  Expanding our sales, marketing, and technical capabilities  Investing in operational and LSS initiatives  ~75% of capital expenditures fund growth initiatives Organic Growth Acquisitions Share Repurchases Dividends $0.16 $0.20 $0.32 $0.40 $0.48 $0.10 $0.20 $0.30 $0.40 $0.50 2011 2012 2013 2014 2015 2016 Annual Dividend  Targets that expand our: • Specialty offerings • End market presence • Geographic breadth  Synergy opportunities  Adjacent material solutions  Repurchased 1.5 million shares in Q1 2016  Repurchased 17.3 million shares since early 2013  10.0 million shares are available for repurchase under the current authorization $0.24 PolyOne Corporation Page 21 The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

Industrial Valle del Cinca S/N Apartado Barbastro, Huesca E-22300 Spain Design and Manufacture of Specialty Engineered Thermoplastics 65536-116858Certificate No: Page 8 of 53 ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Dominic Townsend, President Effective Date: 22 March 2024 Expiration Date: 28 February 2025 Revision Date: 22 March 2024 Avient Corporation - North Baltimore, OH 733 E.

Etyki, wysyłając e-mail na adres ethics.officer@Avient.com. Do dokumentacji biznesowej zaliczyć można m.in.: • projekt opracowania nowego produktu • wyniki przeprowadzonych testów • sprawozdania laboratoryjne • dane z badań • sprawozdania finansowe • sprawozdania dotyczące wydatków • faktury • rejestry czasu pracy • dokumentację pracowniczą • plany biznesowe • pisma, notatki biuletynów i wiadomości e-mail skierowane do pracowników • informacje opublikowane w The Loop Informacje zastrzeżone i poufne obejmują: • plany biznesowe i strategie działania • dane badawcze i techniczne • receptury produktów i dane dotyczące procesów technologicznych • zarządzanie produktem • tajemnice handlowe, technologie i wiedzę techniczną • informacje na temat pozycji Avient na tle konkurencji • niepublikowane informacje i prognozy finansowe • informacje o kosztach związanych z produktem • informacje o zaproponowanych umowach i transakcjach • informacje na temat klientów, dostawców, cen i inne informacje handlowe • oprogramowanie komputerowe i systemy opracowane dla naszej działalności • wszelkie inne informacje, które mogą być przydatne dla konkurencji 14 Spis treści Pytania i odpowiedzi Pyt.: Mój kierownik jest na urlopie.

Beggs /S/ ROBERT E. ABERNATHY Director February 20, 2024 Robert E. FEARON Non-Executive Chairman of the Board, Avient Corporation Retired Vice Chairman and Chief Financial and Planning Officer, Eaton Committees: 2, 4* ROBERT E.

Our Code of Conduct 2023 Table of Contents A Message from the CEO 1 Our Vision and Strategy 2 Core and Personal Values 2 Our Code of Conduct Guidelines for Ethical Behavior 4 Personal Values 4 Resolving Questions and Reporting Non-Compliance Situations 6 Ethics Hotline 6 Non Retaliation 6 Code of Conduct Application 7 Violations of the Code 7 Respect for All Diversity and Inclusion 9 Discrimination or Harassment 9 Workplace Relationships 9 Substance Abuse 10 Physical Security and Workplace Violence 10 Honesty at Work Accurate Information, Data and Records 12 Accounting Integrity 12 Company Communications 14 Safeguarding and Use of Assets 14 Proprietary and Confidential Information, Ideas and Intellectual Property 14 Privacy, Personal Information and Data Protection 15 Internet and E-mail Use 15 Social Media and Social Networking 15 Computer Security, Software Licensing and Copyrights 16 Insider Information and Trading 16 Political Contributions/Activities and Charitable Contributions 17 Government Investigations and Inquiries 17 Integrity in Our Business Fair Dealing 19 Bribery and Kickbacks 19 Agents and Consultants 20 Competition 20 Gifts and Hospitality 20 Conflicts of Interest 21 Self-Dealing 22 International Trade 22 Corporate Social Responsibility Sustainability 24 Safety, Health and Environment 24 Product and Service Safety 25 Respecting Human Rights 25 A Shared Commitment 25 Resources and Contact Information 26 1 HOME | TOC A Message from the CEO Dear Avient Associates, As part of a growing, global company, we are faced with challenging situations and complex decision making.

Etyki, wysyłając e-mail na adres Ethics. Do dokumentacji biznesowej zaliczyć można m.in.: • projekt opracowania nowego produktu • wyniki przeprowadzonych testów • sprawozdania laboratoryjne • dane z badań • sprawozdania finansowe • sprawozdania dotyczące wydatków • faktury • rejestry czasu pracy • dokumentację pracowniczą • plany biznesowe • pisma, notatki biuletynów i wiadomości e-mail skierowane do pracowników • informacje opublikowane w The Loop Do informacji zastrzeżonych i poufnych zaliczyć można m.in.: • plany biznesowe i strategie działania • dane badawcze i techniczne • receptury produktów i dane dotyczące procesów technologicznych • zarządzanie produktem • tajemnice handlowe, technologie i wiedzę techniczną • informacje na temat pozycji Avient na tle konkurencji • niepublikowane informacje i prognozy finansowe • informacje o kosztach związanych z produktem • informacje o zaproponowanych umowach i transakcjach • informacje na temat klientów, dostawców, cen i inne informacje handlowe • oprogramowanie komputerowe i systemy opracowane dla naszej działalności • wszelkie inne informacje, które mogą być przydatne dla konkurencji KODEKS POSTĘPOWANIA | 13 SPIS TREŚCI WSTĘP NASZ KODEKS POSTĘPOWANIA SZACUNEK DLA WSZYSTKICH UCZCIWOŚĆ W PRACY UCZCIWOŚĆ W DZIAŁALNOŚCI BIZNESOWEJ SPOŁECZNA ODPOWIEDZIALNOŚĆ BIZNESU DANE KONTAKTOWE Pytania i odpowiedzi Pyt.: Mój kierownik jest na urlopie.

Ashish Khandpur Presidente e amministratore delegato « Les décisions de notre entreprise ont des implications considérables dans le monde complexe et interconnecté d’aujourd’hui.

Green Tariffs) Renewable electricity technology type Renewable electricity mix, please specify 100% renewable Renewable electricity consumed via selected sourcing method in the reporting year (MWh) 1,991.2 Tracking instrument used Contract Total attribute instruments retained for consumption by your organization (MWh) 1,991.2 Country/area of origin (generation) of the renewable electricity/attribute consumed Sweden Commissioning year of the energy generation facility (e.g. date of first commercial operation or repowering) Vintage of the renewable energy/attribute (i.e. year of generation) 2021 Brand, label, or certification of the renewable electricity purchase No brand, label, or certification Comment Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 99 Country/area of renewable electricity consumption Italy Sourcing method Unbundled Energy Attribute Certificate (EAC) purchase Renewable electricity technology type Renewable electricity mix, please specify 100% renewable Renewable electricity consumed via selected sourcing method in the reporting year (MWh) 21,403.1 Tracking instrument used I-REC Total attribute instruments retained for consumption by your organization (MWh) 21,403.1 Country/area of origin (generation) of the renewable electricity/attribute consumed Italy Commissioning year of the energy generation facility (e.g. date of first commercial operation or repowering) Vintage of the renewable energy/attribute (i.e. year of generation) 2021 Brand, label, or certification of the renewable electricity purchase No brand, label, or certification Comment Country/area of renewable electricity consumption United States of America Sourcing method Unbundled Energy Attribute Certificate (EAC) purchase Renewable electricity technology type Renewable electricity mix, please specify Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 100 100% renewable Renewable electricity consumed via selected sourcing method in the reporting year (MWh) 100,008 Tracking instrument used US-REC Total attribute instruments retained for consumption by your organization (MWh) 100,008 Country/area of origin (generation) of the renewable electricity/attribute consumed United States of America Commissioning year of the energy generation facility (e.g. date of first commercial operation or repowering) Vintage of the renewable energy/attribute (i.e. year of generation) 2021 Brand, label, or certification of the renewable electricity purchase Green-e Comment C8.2j (C8.2j) Provide details of your organization’s renewable electricity generation by country in the reporting year.

We use supplier emission factors, Green-e residual mix, European residual mix, eGRID, and IEA emission factors.