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COLLABO IO N INNOVATION X EL LE NCE CORE VALUES INTEG IT Y HONESTY R SP EC PERSONAL VALUES Historic Transformation PolyOne was established in 2000 through the consolidation of two historic companies in the materials industry.  Our community service efforts are increasing and globalizing every year. The service aims to collect questions or concerns related to our business, people or products.

is a premier provider of specialized polymer materials, services and solutions. Photo - http://photos.prnewswire.com/prnh/20161013/428371 SEARCH INVESTOR NEWS

is a premier provider of specialized polymer materials, services and solutions. Photo - http://photos.prnewswire.com/prnh/20160512/366926 SEARCH INVESTOR NEWS

3D Molding and Design Services from Avient Design: These services accelerate product development with advanced design simulation and 3D printing technologies to provide accurate predictions of performance, as well as cost-effective and functional prototypes to help optimize part design.   For more information about Avient’s innovative healthcare solutions, please visit https://www.avient.com/industries/healthcare.  SEARCH INVESTOR NEWS

AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial GuidanceCompany Overview 2022 Pro Forma Revenue By: 9,700 Employees 104 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable material solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.4B Revenue $2.40 $530M Adjusted EBITDA 15.6% Adjusted EBITDA Margins $200M Free Cash Flow 2.9x Net Leverage Over $1B in share buybacks since 2011 Raised dividend for 12 consecutive years, a 16% CAGR since 2011 Geography Segment Industry U.S. & Canada 64% 36% Specialty Engineered Materials Color Additives and Inks 37% 9% 4% 4% Building & Energy Telecom 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6.5% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. GUIDANCE 12 14.8% 15.8% Adjusted EBITDA Margin % Better-than-expected margins driven by: • Resilient demand for composites and sustainable solutions which improved mix of higher margin applications • Deceleration of raw material inflation • Cost reduction activities Q1 EBITDA BRIDGE 13 $ millions CAI: Price / Mix 19) Inflation (4) SEM: Price / Mix 6) Inflation (4) Net Price Benefit 17) Wage and Energy Inflation (13) Cost Reductions 8) FX (6) Q1 2023 Actual $134) Adjusted EBITDA Q1 2022 Pro Forma $ 176) Demand (48) • Weak demand conditions in-line with previous expectations • Pricing continues to cover inflation of raw materials, wages and energy U.S. & Canada 38% 17% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 23% Building and 6%Telecommunications END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 14 Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . F X ) -10% -11% -3% -12% 15 Avient ex.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • 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; • Disruptions or inefficiencies in our supply chain, logistics, or operations; • Changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Demand for our products and services; • 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 raise or sustain prices for products or services; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • 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; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA;and • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 3 AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable materials solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.14B Revenue $2.36 $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow Over $1B in share buybacks since 2011 Raised dividend for 13 consecutive years, a 15% CAGR since 2011 U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 23% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. PY $790 $719 $107 $114 Sales Adjusted EBITDA $0.42 $0.52 - 9% + 7% + 24% Sales Adjusted EBITDA Adjusted EPS 15 Q4 2023 SEGMENT PERFORMANCE 16 CAI $491 $459 Sales $70 $84 SEM $301 $260 Sales $55 $49 - 7% - 14%+20% - 11% Q4 EBITDA BRIDGE 17 $ millions CAI: Price / Mix 11 Deflation 14 SEM: Price / Mix 4 Deflation 9 Net Price Benefit 38 Cost Reductions 13 Wage Inflation (8) Other (2) Q4 2023 $114 Adjusted Q4 2022 $ 107 Demand (34) • Demand was down, but less than in previous quarters, due to slowing pace of destocking • Positive net price benefit: o CAI – Pricing flat with favorable mix from uptick in packaging and consumer end markets and raw material deflation o SEM - Pricing flat with favorable mix from Composites and raw material deflation • Cost reductions primarily driven by reduced administrative costs and cost synergies 2024 G U I DAN CE 2024 GUIDANCE Full Year 2024 Guidance Adjusted EBITDA $505 to $535 million Adjusted EPS $2.40 to $2.65 Interest Expense $105 to $110 million Adjusted Effective Tax Rate 23% to 25% Capital Expenditures ~$140 million 19 Q1 Adjusted EPS of $0.68 AP P E N DI X 21 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer 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 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 23 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 BILLION 34% 37% 21% END MARKET REGION 24 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 BILLION 52% 35% 25 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 26 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.