FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $487 $522 Q3 23 Q3 24 $89 $97 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 7 + 7% (+8% excluding FX) + 9% (+11% excluding FX) 18.3% +40 bps *18.7% * * Adjusted EBITDA Margin % • Sales growth driven by winning new product specifications in consumer & packaging, strong underlying demand in healthcare and improving demand in building & construction • Favorable mix and raw material deflation contributed to EBITDA margin expansion SPECIALTY ENGINEERED MATERIALS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $268 $295 Q3 23 Q3 24 $51 $57 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 8 • Sales growth driven by restocking in healthcare & consumer end markets and strong underlying demand for composite applications used in building & construction, energy and defense end markets • Favorable mix contributed to EBITDA margin expansion + 10% (+10% excluding FX) + 12% (+13% excluding FX) 19.0% +40 bps *19.4% * * Adjusted EBITDA Margin % 2024 G U IDA N CE FY 2024 GUIDANCE Previous (Aug 6) Current Adjusted EPS $2.55 to $2.70 $2.63 to $2.67 Adjusted EBITDA $515 to $540 million $525 to $530 million Interest Expense $105 million $104 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures & Investment in S/4 Hana ~$140 million ~$140 million 10 11 • Investor Day to be held December 4, 2024 at the NYSE, beginning at 10AM • The focus will be to do a deep dive on the Company’s strategy • Registration and microsite will be available in early November 2024 AVIENT INVESTOR DAY AP P EN D IX 18 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 21 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION US & Canada 52% EMEA 35% Asia 13% 22 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 23 BY END MARKET 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.

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.

Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and estimated CAPEX of $80M (excludes one-time synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of November 8, 2021 86 93 85 83 79 77 75 89 85 83 81 79 79 78 77 74 25 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E B N R H X L A S H E C L E M N H U N S C L A L B (10) Source: Peer data per Bloomberg market data as of November 8, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below many of our specialty formulator peers. With the Clariant Color business 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. 33 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 11.4 20.2 16.7 16.5 14.7 12.0 10.8 40.7 29.9 26.2 13.2 12.4 11.0 10.9 9.1 9.0 7.5 6.5 A vi en t K W R P P G A V Y R P M F U L G C P A L B H X L E C L A S H F M C B N R S C L U N V R E M N C E H U N SUMMARY: WHY INVEST IN AVIENT?

Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 81% Median: 78% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of July 28, 2021 87 90 86 82 80 78 73 87 82 82 79 79 78 78 77 76 71 67 46 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E IF F A S H E C L B N R E M N H X L H U N K R A S C L A L B (6) Source: Peer data per Bloomberg market data as of July 28, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the median of other selected chemical / specialty companies. 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. 31 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 9.5 18.5 15.1 15.1 14.0 11.0 10.4 29.5 28.2 23.9 18.7 12.4 12.2 11.1 9.3 9.2 9.2 7.6 7.6 6.0 A vi en t K W R P P G A V Y R P M F U L G C P A L B H X L E C L IF F F M C B N R A S H S C L E M N U N V R K R A C E H U N Median: 11.1xMedian: 14.6x SUMMARY: WHY INVEST IN AVIENT?

Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 78% 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 June 4, 2021 87 89 87 86 83 81 76 88 85 83 82 81 80 78 78 78 76 72 71 69 50 18 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 H X L U N V R IF F E C L A S H F O E C E E M N B N R H U N G R A K R A S C L A L B Source: Peer data per Bloomberg market data as of June 4, 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 10.4 18.2 16.0 15.5 15.3 11.3 11.0 29.7 26.5 23.5 18.2 13.4 11.9 11.9 11.7 10.5 10.4 10.3 10.1 9.7 7.7 6.5 A vi en t K W R A V Y P P G R P M F U L G C P H X L A L B E C L IF F F M C B N R A S H G R A E M N F O E S C L U N V R C E K R A H U N Median: 11.7xMedian: 15.4x SUMMARY: WHY INVEST IN AVIENT?

locale=en https://www.carbon-minds.com/ https://www.carbon-minds.com/ Global Chemical Management The current and future focus is on continued Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) assessments, reclassifications and communication on the safe use and handling of these substances. INFRASTRUCTURE INNOVATION EDUCATION CLEAN UP HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 64 https://endplasticwaste.org/en Clean-Up and Remediation If soil and groundwater contamination occurs at active or former Avient sites, proper remediation measures are reviewed based on current legal and technical standards and undertaken as necessary. HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 65Sustainability Report | 2022 65 https://endplasticwaste.org/en https://www.opcleansweep.org/ Water and Biodiversity At Avient, we recognize the importance of natural resources like water and biodiversity.

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

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

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

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