LEADING CONSUMER PRODUCTS OEM W A T E R P I T C H E R H A N D L E • Access to the latest colors & effects for inspiration and assistance with brand aesthetics • Meet sustainability expectations while maintaining product and brand integrity • Accelerate product development timeline to meet aggressive commercial deadlines • Offered blue marble effect in Oceanworks PS • Developed a proprietary blue marble aesthetic in a recycled PS, meeting brand and sustainability expectations • Expedited product development to satisfy ambitious timeline requirements • Provided ongoing inspiration and global support throughout the process OnColor™ (Remafin™) Polymer Colorants for polyolefins KEY REQUIREMENTS WHY AVIENT?

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Free Cash Flow to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 36 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi en t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) 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.

Paint-free metallic finish: OnColor™ FX Metal colorants – providing visually appealing metallic finishes without the need for a secondary painting process PolyOne is exhibiting these specialty solutions in booth H.

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Seller warrants good and free title in the Product and that the Product will conform to Seller’s published specifications, if any exist, or to such other quality standards and/or measurements the parties have attached to this document or subsequently have agreed upon in writing. O Vendedor estabeleceu todas e quaisquer recomendações ao Comprador, com relação ao uso do Produto, mediante informações que o Vendedor considerou confiáveis, no entanto, o Vendedor não faz garantia a quaisquer resultados que o Comprador possa obter com o uso do Produto. Qualquer disposição deste contrato conflitante com qualquer disposição destes termos e condições gerais deverá prevalecer. 15.

Criamos uma empresa com uma ótima dinâmica: uma empresa com alcance global e uma visão clara. Esses valores formam um compromisso que nós, como colaboradores da Avient, assumimos uns com os outros, com nossas partes interessadas e com nossas comunidades. SUMÁRIO INTRODUÇÃO NOSSO CÓDIGO DE CONDUTA RESPEITO POR TODOS HONESTIDADE NO TRABALHO INTEGRIDADE EM NOSSOS NEGÓCIOS RESPONSABILIDADE SOCIAL CORPORATIVA RECURSOS CÓDIGO DE CONDUTA | 4 https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Solução de dúvidas e comunicação de situações de não conformidade Nosso Código de Conduta oferece orientações para você usar ao lidar com problemas que podem surgir em seu trabalho e ajudá-lo a tomar as decisões corretas.

D is t. ) K W R P P G F U L R P M A V Y F M C H U N H X L S C L E C L E M N C E A S H Source: Peer data per Bloomberg market data as of February 15, 2022. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $635M and estimated CAPEX of $90M (excludes IT system upgrade of $25M and synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of February 15, 2022 86 89 85 80 76 76 89 85 79 78 76 76 76 70 69 63 8 A vi e nt K W R P P G F U L A V Y R P M F M C U N V R H U N B N R H X L E C L C E A S H E M N S C L A LB Source: Peer data per Bloomberg market data as of February 15, 2022 Total Enterprise Value / 2022E EBITDAWith the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets. OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 5.4 8.5 10.1 10.0 15.7 15.0 14.2 12.7 10.2 25.0 19.7 17.7 13.2 12.3 10.0 9.9 8.9 8.5 8.3 6.6 A vi en t (2 01 1) A vi en t (2 01 6) A vi en t (2 02 1) A vi en t (T o da y) R P M K W R P P G A V Y F U L A L B E C L H X L A S H F M C B N R E M N U N V R C E S C L H U N Historic Multiple SUMMARY: WHY INVEST IN AVIENT?

D is t. ) K W R R P M P P G A V Y F U L G C P IF F H X L F M C F O E H U N E C L K R A E M N A S H C E S C L G R A A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of April 27, 2021 Avient reflects 2021 estimated revenue of $4,300M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 77% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $560M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of April 27, 2021 87 89 87 86 82 81 76 88 87 84 82 81 78 77 77 77 76 73 70 69 50 19 A vi en t K W R P P G R P M A V Y F U L G C P F M C IF F H X L U N V R E C L A S H C E B N R F O E E M N G R A H U N K R A S C L A L B Source: Peer data per Bloomberg market data as of April 27, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the majority of our chemical peers. With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 28 Avient reflects 2021 estimated EBITDA of $560M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 10.2 17.7 16.0 14.9 14.6 11.6 11.1 26.7 24.0 22.8 14.3 12.7 11.5 11.2 11.1 11.0 10.3 10.1 9.5 9.4 8.3 7.0 A vi en t K W R A V Y R P M P P G G C P F U L A L B H X L E C L IF F F M C B N R A S H G R A F O E S C L E M N U N V R C E K R A H U N Median: 11.1xMedian: 14.8x SUMMARY: WHY INVEST IN AVIENT?

CHARCOAL SPARKLE PS 3 H. H.

AT 20-16 2 EN SAVOIR PLUS En France, avec l’extension des consignes de tri à l’ensemble des emballages en plastique, les centres de tri se modernisent, notamment en automatisant leur process et en s’équipant de séparateur optique fonctionnant avec la technologie proche infrarouge. Les résultats des essais réalisés en statique et en dynamique chez les deux Fabricants T.O. 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.