We are delivering record results against a backdrop of incredibly challenging conditions, including the ongoing COVID-19 pandemic, significant supply chain disruptions and inflation. For more information, visit www.avient.com. # # # 4 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “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 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; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows including without any limitation, any supply chain and logistics issues; our ability to achieve the strategic and other objectives relating to the acquisition of Clariant's Masterbatch business, including any expected synergies; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; 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; an inability to achieve the anticipated financial benefit from initiatives related to acquisition and integration working capital reductions, cost reductions and employee productivity goals; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to consummate and successfully integrate acquisitions; and 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.

Notre intégrité personnelle représente le fondement de la réputation d’Avient, et cette intégrité renforce notre crédibilité. 19 Table des matières Utilisation équitable Nous vendons nos produits et services en nous basant sur leurs mérites. Ligne d’assistance en matière d’éthique : https://www.Avient.com/company/policies-and-governance/ethics-hotline Numéro de la ligne d’assistance en matière d’éthique : 1-877-228-5410 https://www.Avient.com/company/policies-and-governance/ethics-hotline Amérique du Nord Siège social mondial Avon Lake, États-Unis 33587 Walker Road Avon Lake, OH, États-Unis 44012 Sans frais : +1 866 765-9663 Téléphone : +1 440 930-1000 Télécopieur : +1 440 930-3064 Asie-Pacifique Siège social régional Shanghai, Chine 2F, Bloc C 200, Jinsu Road Pudong, 201206 Shanghai, Chine Téléphone : +86 (0) 21 6028 4888 Télécopieur : +86 (0) 21 6028 4999 Amérique du Sud Siège social régional Sao Paulo, Brésil Av. Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brésil Téléphone : +55 11 4593 9200 Europe Siège social régional Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Téléphone : +352 269 050 35 Télécopieur : +352 269 050 45 www.avient.com http://www.avient.com

Specialization Globalization Operational Excellence Commercial Excellence Associates 3 Table des matières Notre Code de conduite 4 Table des matières Directives pour un comportement ethique Le Code de conduite (le « Code ») d’Avient est un guide de la conduite professionnelle. Notre intégrité personnelle est la base de la réputation d’Avient et l’intégrité est source de crédibilité. 19 Table des matières Traitement équitable Nous vendons nos produits et services sur la base de leurs mérites. Ligne d’assistance de l’éthique : https://www.Avient.com/company/policies-and-governance/ethics-hotline Numéro de téléphone de la ligne d’assistance liée à l’éthique : 1-877-228-5410 https://www.Avient.com/company/policies-and-governance/ethics-hotline Amérique du Nord Siège mondial d’Avon Lake, États-Unis 33587 Walker Road Avon Lake, Ohio, États-Unis 44012 Numéro gratuit : +1-866-765-9663 Téléphone : +1-440-930-1000 Télécopie : +1-440 930 3064 Asie Pacifique Siège régional de Shanghai, Chine 2F, Block C 200 Jinsu Road Pudong, 201206 Shanghai, Chine Téléphone : +86 (0) 21 6028 4888 Télécopie : +86 (0) 21 6028 4999 Amérique du Sud Siège régional de Sao Paulo, Brésil Av.

Microsoft Word - 55453- PolyOne Corporation RCMS 2013 Option 2.docx ABS Quality Evaluations Letter Of Conformity Page 1 of 1 This is to confirm that the Environment, Health, Safety and Security Management System of: PolyOne Corporation 33587 Walker Road Avon Lake, OH 44012 U.S.A. has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RCMS®:2013 (Option 2) The Environment, Health, Safety and Security Management System is applicable to: Responsible Care Management System activities and corporate supported processes associated with the design and manufacture of plastic compounds, colorants, thermoplastic elastomer compounds, color concentrates and compounding of thermoplastic products.

AVIENT SOLUTION GOOD SEALING + DESIGN FREEDOM LEARN MORE © 2020, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.polyone.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Vacuum cleaner �manufacturer

AVIENT SOLUTION OVERMOLDING + STAIN RESISTANCE LEARN MORE © 2020, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.polyone.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers WIRELESS POWER BANK MANUFACTURER

F -27, MIDC, Ranjangaon, Taluka – Shirur, Pune Maharashtra 412220 India Hold this Opinion Statement No. 798019/2023 The Organization has demonstrated that they have followed the guidelines provided for Good Manufacturing Practices as per the ICHQ7 guidelines in their organization for the following Business activity: Research and Development, Manufacture of Color additives, Concentrates and Specialty Formulations for intended use in pharma and other industries Theuns Kotze, Managing Director – IMETA Assurance Last Audit Date: 31.10.2023 BSI Group India Private Limited T: +91-4762-9000 (CIN U74899DL1999PTC101381 info.in@bsigroup.com The Mira Corporate Suites bsigroup.com/en-IN Plot 1&2, Ishwar Nagar, Mathura Road New Delhi-110065, India

AVIENT SOLUTION BIOCOMPATIBILITY + SOFT TOUCH LEARN MORE © 2020, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.polyone.com/products/thermoplastic-elastomers/dynaflex-thermoplastic-elastomers European medical device manufacturer

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