2http://www.aerosil.com/product/aerosil/en/industries/plastics-thermoplastics/pages/default.aspx  

VERHALTENSKODEX | 5 INHALTSANGABE EINLEITUNG UNSER VERHALTENSKODEX RESPEKT FÜR ALLE EHRLICHKEIT BEI DER ARBEIT INTEGRITÄT IN UNSEREM GESCHÄFT SOZIALE VERANTWORTUNG DES UNTERNEHMENS RESSOURCEN https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html mailto:Ethics.Officer%40Avient.com? subject= https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html http://Avient.com https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Keine Vergeltungmaßnahmen Avient duldet keinerlei Vergeltungsmaßnahmen gegen Personen, die in guter Absicht Rat suchen, Bedenken vortragen, Fehlverhalten melden oder Auskünfte in Bezug auf Untersuchungen erteilen, die aufgrund des Verdachts eines Verstoßes gegen den Verhaltenskodex vorgenommen werden. VERHALTENSKODEX | 6 INHALTSANGABE EINLEITUNG UNSER VERHALTENSKODEX RESPEKT FÜR ALLE EHRLICHKEIT BEI DER ARBEIT INTEGRITÄT IN UNSEREM GESCHÄFT SOZIALE VERANTWORTUNG DES UNTERNEHMENS RESSOURCEN https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Respekt für alle Wir haben gemeinsam eine Verantwortung für die Schaffung und Aufrechterhaltung einer angenehmen, nicht bedrohlichen und produktiven Arbeitsumgebung – ein Arbeitsplatz, an dem alle Menschen fair und respektvoll behandelt werden.

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Purchase price multiple rapidly declining on strength of business and synergy capture (1) (1) (1) Financial information is pro forma to include a full year of Clariant Color acquisition ($ in millions) 11.9% 16.2% 2019PF 2021 EBITDA Margins (1) S P E C I A LT Y T R A N S F O R M AT I O N 7% 46% 66% 86% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d E B IT D A (1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) 29 12% 18% 16% 15% 15% 14% 14% 28% 28% 26% 25% 22% 21% 19% 16% 12% 9% 9% A vi en t T od ay A vi en t P F A V Y P P G K W R FU L R P M C E A LB FM C A S H E C L E M N H X L H U N S C L B N R U N V R Median: 21%Median: 15% 2 0 2 2 E B I T DA M A RG I N S V S .

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PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 18 S U S T A I N A B I L I T Y D AY R E C A P SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 20 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CRE AT ING A WORL D-CL AS S S US TAINABL E ORGANIZ AT ION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.1 3.3 3.7 3.0 3.7 4.7 4.8 6.8 6.8 8.7 11.1 A vi en t K W R FU L P P G A V Y R P M FM C H U N C E E C L H X L A S H E M N S C L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) A vi en t K W R FU L P P G A V Y R P M FM C C E E C L A S H H X L H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57.

Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport 1995 route de la Vallée du Giffre Saint-Jeoire en Faucigny 74490 France Avient Colorants Germany GmbH Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Transport Kornkamp 50 Ahrensburg Thuringia 22926 Germany Avient Colorants Germany GmbH Administration, Site management, Manufacture, Laboratory, Maintenance, Infrastructure, Warehouse and Transport Hohenrhein 1 Lahnstein Thuringia 56112 Germany Avient Guatemala S.A.

HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 47 https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/edgetek https://www.fiber-line.com/en/products/water-blocking-yarn https://www.fiber-line.com/en/products/water-blocking-yarn https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations Outdoor High Performance Outdoor enthusiasts demand gear and equipment that delivers uncompromising performance, in places where failure is not an option. M in im izi ng En vironm ental, Health, Safety, Security & S o cia l Im p a cts PRODUCT STEWARDSHIP INNOVATE MANUFACTURE SELL USE REUSE Manufacturing Product Use Raw Materials Recycling PRODUCT LIFE CYCLE In many instances, we have gone beyond basic legal requirements, such as Responsible Care® certification and implementation of the Product Safety Code. None of our ColorMatrix suppliers has been found to engage in human trafficking during this reporting period. 330 SUPPLIER SELF-ASSESSMENTS COMPLETED HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 61 https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf https://www.ilo.org/global/standards/lang--en/index.htm https://www.ilo.org/global/standards/lang--en/index.htm https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement Strategic Partnerships and Alliances Alliance to End Plastic Waste We are proud to be a founding member of the Alliance to End Plastic Waste (AEPW).

CODICE DI CONDOTTA | 5 INDICE INTRODUZIONE IL NOSTRO CODICE DI CONDOTTA RISPETTO PER TUTTI ONESTÀ SUL LAVORO INTEGRITÀ NELLA NOSTRA ATTIVITÀ RESPONSABILITÀ SOCIALE DELL’AZIENDA RISORSE https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html mailto:Ethics.Officer%40Avient.com? subject= http:// http://avient.com https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Non ritorsione Avient non tollererà ritorsioni nei confronti di chi, in buona fede, chiede consiglio, solleva un dubbio, segnala cattive condotte o fornisce informazioni durante un’indagine su una sospetta violazione del codice di condotta. CODICE DI CONDOTTA | 24 INDICE INTRODUZIONE IL NOSTRO CODICE DI CONDOTTA RISPETTO PER TUTTI ONESTÀ SUL LAVORO INTEGRITÀ NELLA NOSTRA ATTIVITÀ RESPONSABILITÀ SOCIALE DELL’AZIENDA RISORSE https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Autonegoziazioni Le opportunità commerciali che scoprite sul lavoro, utilizzando le informazioni aziendali, la proprietà o la posizione di un individuo nell’azienda, appartengono all’azienda e non a voi personalmente.

MAGATARTÁSI KÓDEXÜNK | 4 TARTALOMJEGYZÉK BEVEZETÉS MAGATARTÁSI KÓDEXÜNK A TISZTELET MINDENKINEK JÁR BECSÜLETESSÉG A MUNKAHELYEN ÜZLETI FEDDHETETLENSÉG TÁRSADALMI FELELŐSSÉGVÁLLALÁS ERŐFORRÁSOK https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Problémamegoldás és a szabálysértések jelentése Magatartási kódexünk útmutatást ad a munkája során esetlegesen felmerülő problémák kezelésére és a helyes döntések meghozatalára. Be kell-e jelentenem ezt a kapcsolatot akkor is, ha nem én kezelem a megrendeléseket? Elfogadom és tudomásul veszem, hogy az én felelősségem útmutatást és/vagy felvilágosítást kérni a Magatartási kódex bármely részét illetően, amely nem világos számomra.