 Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strategic balance between reinvestment for growth and returning cash to shareholders  Strong and proven management team driving growth and performance 18 POLYONE CORPORATION Segment Highlights POLYONE CORPORATION 19 2016 Revenue: $0.8 Billion At a Glance: Color, Additives & Inks Key Applications 2016 Revenue by Industry Expanding Profits 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 14.7% 16.7% 16.0% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision United States 45% Europe 33% Asia 15% Latin America 5% Canada 2% Packaging 30% Industrial 15% W & C 10% B & C 10% Textiles 9% Transportation 9% Consumer 7% Healthcare 6% Appliance 2% E & E 2% POLYONE CORPORATION 20 2016 Revenue: $0.6 Billion At a Glance: Specialty Engineered Materials 2016 Revenue by Industry Expanding Profits 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12.1% 14.7% 14.3% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision Consumer 19% Transportation 19% E & E 15% W & C 15% Healthcare 11% Industrial 8% Packaging 7% Appliance 3% B & C 3% United States 51% Europe 27% Asia 20% Canada 2% Key Applications POLYONE CORPORATION 21 2016 Revenue: $0.4 Billion At a Glance: Designed Structures & Solutions 2016 Revenue by Industry Expanding Profits 1.4% 5.6% 7.3% 3.0% 8-10% -0.9% 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision Transportation 27% Industrial 21% Packaging 21% B & C 11% Healthcare 8% Consumer 8% Appliance 3% E & E 1% Key Applications United States 95% Canada 5% http://www.google.com/url? sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://www.mullerquaker.com/products/greek100/greek100-peach-and-passion-fruit&ei=-acYVZq7EIqwyASDjYL4CA&bvm=bv.89381419,d.cWc&psig=AFQjCNGNCQY1_dCN2RPLzxtap_Pu0omTXQ&ust=1427765484498432 POLYONE CORPORATION 22 2016 Revenue: $0.7 Billion At a Glance: Performance Products & Solutions 2016 Revenue by Industry Expanding Profits 5.5% 6.9% 3.8% 3.6% 5.5% 4.3% 6.3% 7.2% 7.7% 8.3% 12-14% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision 11.1% B & C 30% Transportation 18% W & C 16% Industrial 16% Appliance 6% Consumer 5% Packaging 5% E & E 3% Healthcare 1% United States 78% Canada 16% Latin America 4% Asia 2% Key Applications POLYONE CORPORATION 23 2016 Revenue: $1.1 Billion At a Glance: Distribution Key Suppliers ROIC Expanding Profits 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.4% 5.9% 6.1% 6.6% 6.5-7.5% 6.4% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision 15% 51% 2006 2016 Transportation 24% Healthcare 22% Industrial 18% Consumer 15% Appliance 6% E & E 5% B & C 4% Packaging 4% W & C 2% http://www.polyone.com/Pages/VariationRoot.aspx 24 POLYONE CORPORATION Application Examples POLYONE CORPORATION 25 Luxury Packaging with Gravitech Density Modified Polymers  Impart weight, sound and metallic finish to caps and closures for cosmetics and spirits applications  Elevate quality and prestige perceptions among high-end consumers  Eliminate time and cost associated with secondary operations and assembly POLYONE CORPORATION 26  Eliminate costs by increasing pigment density  Enhance color performance without altering form and formulation  Increase design capabilities by reducing weight and layer thickness Optimize Color Usage with OnColor Super Concentrates POLYONE CORPORATION 27  Inhibit microbial growth on polymer surface  Enhance value or products and devices  Highly versatile concentrate with the ability to be incorporated into a wide variety of products Combat Bacteria Formation with WithStand Antimicrobial Technology POLYONE CORPORATION 28 Medical Device Housings with Chemically Resistant Engineered Polymers  Durable, long-lasting products stand up to the most aggressive disinfectants  Minimize environmental stress cracking and discoloration  One of the broadest medically approved polymer and colorant portfolios POLYONE CORPORATION 29 Color & Design Services  Greater control of color development and supply chain  Work across entire design process from concept to commercialization  Inspire creativity in the use of polymer materials, colors and effects  Innovative brand differentiation  Faster development timelines POLYONE CORPORATION 30 Outdoor Applications  Leading provider of high performance specialty materials for the recreational and sports & leisure industry  Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance Source: Outdoor Industry Association POLYONE CORPORATION 31 Fiber Colorants Solutions for clothing, apparel, footwear, automotive & sporting goods  ColorMatrix Fiber Colorant Solutions  Proprietary advanced liquid color formulations and equipment enable greater efficiency and productivity  Eliminates aqueous dyeing and its associated wastewater treatment  Solid Color Concentrates  Extrusion-spun fibers colored via solid masterbatch POLYONE CORPORATION 32 High-Barrier Packaging Containers  Capability to extrude up to 13 layers  Strong oxygen and moisture vapor transmission protection  Can be made symmetrical or asymmetrical to meet customized needs of broad variety of applications  Barrier protection and superior sensory properties 1 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income attributable to PolyOne common shareholders, adjusted earnings per share (EPS) attributable to PolyOne common shareholders and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance. Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010 2011 2012 2013 2014 2015 2016 Net income attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 165.2 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 35.5 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (20.7) Adjusted net income attributable to PolyOne common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 180.0 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.13 Adjusted operating income is calculated as follows: 2006* 2016 Operating income $ 233.6 $ 281.9 Special items (1) (39.1) 35.3 Joint venture equity earnings (107.0) 0.0 Adjusted operating income $ 87.5 $ 317.2 * 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. (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; mark-to-market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, joint ventures and equity investments; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non-recurring items; the effect of changes in accounting principles or other such laws or provisions affecting reported results and tax adjustments.

The company noted that GAAP EPS includes $0.24 of special items (see Attachment 3) and $0.16 of intangible amortization expense (see Attachment 1). You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 6 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2023 2022 Sales $ 845.7 $ 892.2 Operating Income 57.1 102.2 Net income from continuing operations attributable to Avient shareholders 20.8 64.4 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 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.

OFC TECHNOLOGY LEADER M I C R O B U N D L E S I N B L O W I N G A P P L I C A T I O N F O R R A I L W A Y S • Strippable with fingers for easy installation/access to fibers • High speed processing at a low wall thickness • Low shrinkage • Resistance to chemicals and filling compounds • Meet XP C93-850-1-1 standard • Re-designed cable to provide advantageous functional and economical value • Improved flexibility compared to PBT and PP tubes, allowing longer blowing distances on paths with angles of 90° • Increased processing speed and improved ease of installation • Provided better cable lifetime value compared to alternative solutions ECCOH™ 6151 UV SEPAP Formulation KEY REQUIREMENTS WHY AVIENT?

Normative base ISO 22000:2018 Food Safety Management Systems - Requirements for any organization in the food chain Reg. no. 46389 Page 1 of 1 Validity 25. 02. 2024 – 24. 02. 2027 Issue 20. 12. 2023 A.Grisard, President SQS F.

Certificate of Approval Certificate n°: FR079697-1 Contract n°: 15701960 Revision date: 22 February 2023 Laurent CROGUENNEC - President Local office: Bureau Veritas Certification France Le Triangle de l'Arche - 9 Cours du Triangle - 92937 Paris La Défense Further clarifications regarding the scope of this certificate the applicability of the management system requirements may be obtained by consulting the organization. To check this certificate validity, please call + 33(0) 1 41 97 00 60.

Page 1 / 1 has been assessed and certified as meeting the requirements of ISO 9001:2015 For the following activities The Design and Manufacturing of Plastic Color Concentrated, Plastic Additive Concentrated and Pigment Powder for Thermoplastic & Rubber Industries.

MSC Certificate Place and date: For the issuing office: Høvik, 23 January 2025 DNV Product Assurance AS Veritasveien 1, 1363 Høvik, Norway Cecilie Gudesen Torp Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ICP-4-5-i5-ISO13485-f1 rev2 ACCREDITED UNIT: DNV Product Assurance AS, Veritasveien 1, 1363 Høvik, Norway - TEL: +47 67 57 99 00. www.dnv.com MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 240625-2017-AQ-RGC-NA-PS Initial certification date: 14 September 2017 Valid: 08 February 2025 – 07 February 2028 This is to certify that the management system of PolyOne-Shanghai, China 88 Guoshoujing Road, Z.J.Hi-Tech Park, Pudong Shanghai, China (Unicode: 91310000607342402D) has been found to conform to the Quality Management System standard: ISO 13485:2016 This certificate is valid for the following scope: Design, Manufacture, Sales and Distribution of Medical Colour and Additive Concentrates Used for the Plastic Parts of Medical Devices http://www.dnv.com

AT 20-17 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PE 94000828 les centres de tri D E S C R IP TI O N D E L A D E M A N D E GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PE 94000828 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PE OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante CESA® IR PE 94000828 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PE. D’une part, l’entreprise Avient Corporation s’est engagée à : - utiliser le protocole de tri fournis par le COTREP (« Procédure de tests de tri optique COTREP pour évaluer la détectabilité d’emballages sombres lors des étapes de tri optique » - version Janvier 20191) ; - réaliser les tests chez les deux Fabricants T.O. représentatifs des capacités de tri existantes en France ; - remettre au COTREP les rapports des essais pour analyse et avis ; - proposer une solution colorante : o qui réponde aux exigences essentielles de la directive emballage 94/62/CE o qui ne fait pas basculer la densité de l’emballage : les emballages majoritairement en PP ou PE doivent conserver une densité < 1 et les emballages majoritairement en PET ou en PS une densité > 1. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

AT 20-18 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PE 94000816 dans les centres de tri D E S C R IP TI O N D E L A D E M A N D E GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PE 94000816 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PE OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante noire CESA® IR PE 94000816 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PE. D’une part, l’entreprise Avient Corporation s’est engagée à : - utiliser le protocole de tri fournis par le COTREP (« Procédure de tests de tri optique COTREP pour évaluer la détectabilité d’emballages sombres lors des étapes de tri optique » - version Janvier 20191) ; - réaliser les tests chez les deux Fabricants T.O. représentatifs des capacités de tri existantes en France ; - remettre au COTREP les rapports des essais pour analyse et avis ; - proposer une solution colorante : o qui réponde aux exigences essentielles de la directive emballage 94/62/CE o qui ne fait pas basculer la densité de l’emballage : les emballages majoritairement en PP ou PE doivent conserver une densité < 1 et les emballages majoritairement en PET ou en PS une densité > 1. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

GUÍA DE SELECCIÓN DE PRODUCTOS SOLUCIONES PARA CABLE & ALAMBRE Materiales de Ingenieria Especializada Formulaciones para aislamiento, revestimiento y cross-web para el mercado de cable y alambre Syncure™ XLPE Formulaciones de Polietileno Reticulable • Curado al ambiente • Alto desempeño a la flama • Resistente al calor, el aceite, a la deformación por stress constante y la abrasión • Propiedades de baja temperatura • Baja inversión de capital • Alta velocidad de extrusión • Libre de DBDPE disponible • Boletinados por UL/CSA Maxxam™ FR Polipropileno con Retardante de Flama • Reemplaza al FEP para aislamiento • Desempeño a la flama • Cumplimiento a UL 444 yellow card • Baja constante dieléctrica • Alta velocidad de extrusión • Capacidad de extrusión para paredes delgadas Maxxam™ SY Polipropileno Espumado • Baja constante dieléctrica • Estructura celular uniforme • Resistencia al calor y la compresión • Facilidad del espumado mediante proceso químico Soluciones LSFOH ECCOH™ Baja Emisión de Humo y Libre de Halógenos • Mejora de la seguridad contra incendios • Baja emisión de humo, toxicidad y libre de halogenos (LSFOH) • Resistencia química ECCOH™ XL Soluciones para Cable Reticulado • Libre de halógenos, baja emisión de humos, baja toxicidad y anticorrosiva • Excelentes propiedades electricas y mecanicas • Facilmente procesable • Temperaturas de operación 90°C • Tecnologia de curado por humedad Synprene™ Elastómeros Termoplásticos Retardantes de Flama • Flexibilidad • Alta desempeño a la flama • Resistencia a baja temperatura • Resistencia química • Permite coloración FireCon™ CPE Polietileno Clorado Retardante de Flama • Resistencia en ambientes extremos • Propiedades de baja temperatura • Alta desempeño a la flama • Alta velocidad de extrusión • Resistencia a la luz del sol y rayos UV CARACTERISTICAS ESPECIFICACIONES ECCOH™ XL 8148 Libre de halógenos, baja emisión de humos, baja toxicidad, anticorrosivo EN50618 Syncure™ S100FH Flama horizontal UL 44 Syncure™ S100FH-XUV Flama horizontal, resistencia UV UL 44 Syncure™ S100FH-UV Flama horizontal, FV-1, resistencia UV UL 44, UL 4703 Syncure™ S100FV VW-1 UL 44 Syncure™ S100FV-UV VW-1, resistencia UV UL 44 Syncure™ S112NA Sin retardante a la flama CSA 22.2 Syncure™ S120NA Sin retardante a la flama NSF 61 Syncure™ S200FH Flama horizontal, libre de DBDPE UL 44 Syncure™ S200FV VW-1, libre de DBDPE UL 44 SISTEMAS PARA AISLAMIENTO DE CABLES DE BAJO VOLTAJE Cables de baja tensión • Desempeño a la flama • Resistencia al calor, aceite y abrasión • Buen desempeño a bajas temperaturas • Baja inversión de capital • Altas velocidades de procesamiento AISLAMIENTO Y CROSS-WEBS PARA CABLES DE CATEGORIA Los sistemas de cables de categoría nos proporcionan • Alternativas de cables FEP • Desempeño a la flama • Baja constante dieléctrica • Altas velocidades de extrusión y desempeño para pared delgada • Resistencia química • Desempeño a bajas temperaturas • Flexibilidad CARACTERISTICAS ESPECIFICACIONES Maxxam™ FR 0521-48 R1 Baja emisión de humo, libre de halógenos UL 444 Maxxam™ FR 0587-21 R3 Halogenado, y desempeño para cables plenum UL 444 Cables para fibra optica • Resistencia a ambientes extremos, químicos y a la exposición a luz del sol • Resistencia a bajas temperaturas (LTB) • Baja emisión de humos y toxicidad • Flexibilidad • Altas velocidades en extrusion CARACTERISTICAS ESPECIFICACIONES ECCOH™ 6649 UV Low DD Baja emisión de humos, Libre de halógenos Cubre las requerimientos de retardacia a la flama requeridos por el cliente Cables Coaxiales • Flexibilidad • Altas velocidades de extrusión • Baja constante dieléctrica • Estructura de celda uniforme • Resistencia al calor y a la deformación CARACTERISTICAS ESPECIFICACIONES Maxxam™ SY 89-22-7 Espumable Cubre las requerimientos de retardacia a la flama requeridos por el cliente SISTEMAS PARA CUBIERTA PARA CABLES DE DATOS Cubiertas para medio y bajo voltaje • Resistencia a ambientes extremos, ambientes químicos y degradación por rayos UV • Resistencia a bajas temperaturas (LTB) • Baja emisión de humos y toxicidad • Flexibilidad • Altas velocidades de extrusión • Fácilmente de colorear CARACTERISTICAS MERCADOS Y APLIACIONES FireCon™ CPE 30-33 RoHS Black Retardante a la flama, flexible Edificación & construcción, industrial, nuclear FireCon™ CPE 37-36 RoHS Black Retardante a la flama, flexible Edificación & construcción, industrial, nuclear FireCon™ CPE 30-20 RoHS Natural Retardante a la flama, flexible Edificación & construcción, industrial, nuclear ECCOH™ 5549 UV Baja emisión de humos, libre de halógenos, retardante a la flama Edificación & construcción, industrial ECCOH™ 6649 UV Low DD Baja emisión de humos, libre de halógenos, retardante a la flama Fibra optica, ductos ECCOH™ 5981 UV Baja emisión de humos, libre de halógenos, retardante a la flama Cables industriales, cables Teck 90 Synprene™ RT5180 Retardante a la flama, resistente a LTB Edificación & construcción, industrial Synprene™ RT5180UV Retardante a la flama, resistente a LTB Edificación & construcción, industrial Synprene™ RT3870M Retardante a la flama, resistente a LTB Edificación & construcción, industrial www.avient.com Copyright © 2023, Avient Corporation.