Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/k7okojz2. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2171339. http://www.avient.com/investors https://edge.media-server.com/mmc/p/k7okojz2 https://edge.media-server.com/mmc/p/k7okojz2 http://www.avient.com/investors 4 About Avient Avient Corporation (NYSE: AVNT), with 2021 revenues of $4.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. For more information, visit www.avient.com. # # # https://www.avient.com/ 5 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.

Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/yrq7mgm9.To participate in the audio-only portion of the call, dial 1-844-835- 7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 7899765. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 7899765. http://www.avient.com/investors https://edge.media-server.com/mmc/p/yrq7mgm9 https://edge.media-server.com/mmc/p/yrq7mgm9 http://www.avient.com/investors 3 Full Year Comparisons Pro Forma for Acquisition of Clariant’s Color Business The company acquired Clariant’s color (“Clariant Color”) business on July 1, 2020 (the “Acquisition Date”). For more information, visit www.avient.com. # # # http://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.

A recording of the webcast and the slide presentation will be available at avient.com/investors/events-presentations immediately following the conference call and will be accessible for one year. https://www.avient.com/investors https://edge.media-server.com/mmc/p/pyh3w2ip/ https://www.avient.com/investors https://register.vevent.com/register/BId7a8a09515a442e9b13c4d5558d927fe https://www.avient.com/investors/events-presentations 4 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. For more information, visit https://www.avient.com/. 5 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.

MAGATARTÁSI KÓDEXÜNK | 17 TARTALOMJEGYZÉK BEVEZETÉS MAGATARTÁSI KÓDEXÜNK A TISZTELET MINDENKINEK JÁR BECSÜLETESSÉG A MUNKAHELYEN ÜZLETI FEDDHETETLENSÉG TÁRSADALMI FELELŐSSÉGVÁLLALÁS ERŐFORRÁSOK http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/CorporatePolicies/CyberandDataIncidentResponsePolicy/tabid/2729/Default.aspx http://polynet/ethics/CorporatePolicies/CyberandDataIncidentResponsePolicy/tabid/2729/Default.aspx Bennfentes információk és bennfentes kereskedés Az Avientnél olyan jelentős információk birtokába juthat az Avienttel vagy más üzletfelünkkel kapcsolatban, amelyek még nyilvánosan nem ismertek. MAGATARTÁSI KÓDEXÜNK | 27 TARTALOMJEGYZÉK BEVEZETÉS MAGATARTÁSI KÓDEXÜNK A TISZTELET MINDENKINEK JÁR BECSÜLETESSÉG A MUNKAHELYEN ÜZLETI FEDDHETETLENSÉG TÁRSADALMI FELELŐSSÉGVÁLLALÁS ERŐFORRÁSOK https://www.avient.com/company/sustainability/sustainability-report http://Avient.com/sustainability http://Avient.com/sustainability https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 Kérdések és válaszok: K: A felettesem arra kért, hogy alkalmazzak egy új hulladékkezelési eljárást, de nem vagyok biztos abban, hogy ez biztonságos vagy egyáltalán törvényes-e. TARTALOMJEGYZÉK BEVEZETÉS MAGATARTÁSI KÓDEXÜNK A TISZTELET MINDENKINEK JÁR BECSÜLETESSÉG A MUNKAHELYEN ÜZLETI FEDDHETETLENSÉG TÁRSADALMI FELELŐSSÉGVÁLLALÁS ERŐFORRÁSOK MAGATARTÁSI KÓDEXÜNK | 30 http://avient.ethicspoint.com http://avient.ethicspoint.com http://avient.ethicspoint.com Észak-Amerika Globális Központ Avon Lake, Egyesült Államok 33587 Walker Road Avon Lake, OH, Egyesült Államok 44012 Ingyenesen hívható telefonszám: +1 866 765 9663 Telefon: +1 440 930 1000 Fax: +1 440 930 3064 Ázsia és a Csendes-óceáni térség Regionális Központ Sanghaj, Kína 2F, Block C 200 Jinsu Road Pudong, 201206 Sanghaj, Kína Telefonszám: +86 (0) 21 6028 4888 Fax: +86 (0) 21 6028 4999 Dél-Amerika Regionális központ São Paulo, Brazília Av.

subject= http://Avient.com mailto:https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html? CÓDIGO DE CONDUCTA | 17 ÍNDICE INTRODUCCIÓN NUESTRO CÓDIGO DE CONDUCTA RESPETO POR TODOS HONESTIDAD EN EL TRABAJO INTEGRIDAD EN NUESTRO NEGOCIO RESPONSABILIDAD SOCIAL CORPORATIVA RECURSOS http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx Información privilegiada y tráfico de información En Avient, es posible que esté al tanto de información sustancial relacionada con Avient o con alguna empresa con la que hacemos negocios que no se haya divulgado al público. subject= http://Avient.com/sustainability mailto:https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0?

Please contact coupaenablement@avient.com for assistance and support. https://compass.coupa.com/en-us/products/product-documentation/supplier-resources/for-suppliers/coupa-supplier-portal/csp-videos/csp-videos https://compass.coupa.com/en-us/products/product-documentation/supplier-resources/for-suppliers/coupa-supplier-portal/csp-videos/csp-videos mailto:coupaenablement@avient.com https://compass.coupa.com/en-us/products/product-documentation/supplier-resources/for-suppliers/coupa-supplier-portal/csp-videos/csp-videos mailto:coupaenablement@avient.com

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This Candidate Privacy Notice (“Notice”) sets out how Avient collects, uses or discloses personal information from job applicants and candidates (collectively “you”) when you access or use our careers websites, including https://avient.referrals.selectminds.com/ (the “Sites”). For more information about how Avient processes your personal information for these services and third-party websites, please visit the Avient Corporation Privacy Statement, available at https://www.avient.com/company/policies-and-governance/avient-corporation-privacy-statement. Effective Date: August 1, 2020 mailto:PRIVACY.OFFICER@POLYONE.COM https://privacyportal.onetrust.com/webform/b25cf7b1-a93a-4d26-8c84-ceda4d0ae91b/e180cbe4-d1b9-49bd-b621-cb5f6a0f42cb mailto:PRIVACY.OFFICER@POLYONE.COM

All Rights Reserved. https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colorant-chromatics-pvdf-processing-aids Slide 1: Wire & cable oem

All rights reserved. http://www.abs-qe.com/cert_validation PolyOne Corporation has been assessed by ABS Quality Evaluations,Inc. and found to be in conformance with the requirements set forth by: Certificate No: 55287