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This portfolio includes the recent addition of Mevopur bio-based polymer solutions, which are color and additive masterbatches based on bio-polyethylene resins that have up to 95 percent bio-based content.

Buyer assumes all risk of infringement of third-party intellectual property rights by reason of any use Buyer makes of the Product in combination with other substances or in the operation of any process, and all infringement arising out of Seller’s compliance with Buyer’s designs, specifications or instructions, and Buyer shall defend, indemnify and hold Seller harmless from and against the same. Buyer assumes all risks and liabilities (i) arising out of unloading, discharge, storage, handling and use of the Product, or (ii) arising out of compliance or non-compliance with laws and regulations governing or controlling such activity. Buyer shall indemnify, defend and save Seller harmless against any and all liability for Buyer Indemnity Costs arising out of or in any way connected with Buyer’s failure to disseminate such information.

WHAT COLORS AND MATERIALS ARE ‘IN’? WHAT WILL MY CUSTOMERS BUY? STAYING AHEAD OF TRENDS2 1 3 4 5 WHAT ARE THE NEWEST POLYMER TECHNOLOGIES?

Patterson Page 46 United States 67% Europe 17% Canada 11% Asia 5% United States 60% Europe 19% Canada 9% Asia 7% Latin America 5% Customer-Driven Globalization 2006 2011* *Pro forma for the acquisition of ColorMatrix • Differentiated by our consistent service and quality offerings globally • Invested in global account management organization to serve over 100 multinational key accounts Page 47 • Leverage technology development and best practices to better serve global customers • Drive global marketing strategies for growth with target customers & markets Formation of Global Segments in 2010 • Accelerate decision making and assure consistent execution of four pillar strategy for growth with target customers & markets Page 48 Recent Investment Activity • 67% of recent commercial additions are outside the U.S

DM691#48 RASPBERRY NON-PHTHALATE

Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. All Rights Reserved 2025 Full-year 2024 highlights ► 4% organic revenue growth for Avient; 3% for CAI and 6% for SEM ► Adjusted EBITDA margin expanded 20 bps for Avient; 90 bps for CAI and 110 bps for SEM ► New strategy in execution Leadership team strengthened with a new CTO, CIO, General Counsel, SVP (New business development & marketing) in place ► New compensation plan rolled out in January 2025, in direct alignment with the strategy ► 2024 was our safest year on record ► Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase FY 2024 results FULL YEAR 2024 VS. Three Months Ended December 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 48.3 $ 0.52 $ 27.8 $ 0.30 Special items, after-tax (18.0) (0.20) 5.4 0.06 Amortization expense, after-tax 14.8 0.17 15.0 0.16 Adjusted net income / EPS $ 45.1 $ 0.49 $ 48.2 $ 0.52 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 169.5 $ 1.84 $ 75.8 $ 0.83 Special items, after-tax 15.9 0.17 79.3 0.86 Amortization expense, after-tax 59.5 0.65 61.5 0.67 Adjusted net income / EPS $ 244.9 $ 2.66 $ 216.6 $ 2.36 (1) Per share amounts may not recalculate from figures presented herein due to rounding Three Months Ended December 31, Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 2024 2023 Net income from continuing operations – GAAP $ 48.5 $ 27.6 $ 170.7 $ 76.3 Income tax expense (benefit) 14.8 (7.0) 54.1 11.0 Interest expense 25.5 26.8 105.6 115.3 Depreciation and amortization from continuing operations 45.4 44.2 179.7 188.8 EBITDA from continuing operations $ 134.2 $ 91.6 $ 510.1 $ 391.4 Special items, before tax (23.9) 22.4 20.1 114.6 Interest expense included in special items — (0.1) (2.3) (2.3) Depreciation and amortization included in special items (0.3) — (1.5) (1.9) Adjusted EBITDA $ 110.0 $ 113.9 $ 526.4 $ 501.8 Adjusted EBITDA as a percent of sales 14.7 % 15.8 % 16.2 % 16.0 % 1 Three Months Ended December 31, Year Ended December 31, 2024 2023 2024 2023 Sales: Color, Additives and Inks $ 467.7 $ 459.4 $ 2,046.5 $ 2,007.4 Specialty Engineered Materials 279.7 259.8 1,196.8 1,138.2 Corporate (0.9) (0.2) (2.9) (2.8) Sales $ 746.5 $ 719.0 $ 3,240.4 $ 3,142.8 Gross margin: Color, Additives and Inks $ 152.6 $ 148.3 $ 681.1 $ 631.2 Specialty Engineered Materials 84.2 78.1 374.9 341.8 Corporate 22.7 (17.5) 0.7 (80.5) Gross margin $ 259.5 $ 208.9 $ 1,056.7 $ 892.5 Selling and administrative expense: Color, Additives and Inks $ 92.8 $ 86.5 $ 384.9 $ 371.3 Specialty Engineered Materials 49.6 48.7 207.7 199.3 Corporate 31.5 30.6 134.8 125.1 Selling and administrative expense $ 173.9 $ 165.8 $ 727.4 $ 695.7 Operating income: Color, Additives and Inks $ 59.8 $ 61.8 $ 296.2 $ 259.9 Specialty Engineered Materials 34.6 29.4 167.2 142.5 Corporate (8.8) (48.1) (134.1) (205.6) Operating income $ 85.6 $ 43.1 $ 329.3 $ 196.8 Depreciation and amortization: Color, Additives and Inks $ 21.9 $ 22.2 $ 87.5 $ 98.3 Specialty Engineered Materials 21.0 19.8 82.1 81.5 Corporate 2.5 2.2 10.1 9.0 Depreciation and amortization $ 45.4 $ 44.2 $ 179.7 $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 81.7 $ 84.0 $ 383.7 $ 358.2 Specialty Engineered Materials 55.6 49.2 249.3 224.0 Corporate (6.3) (45.9) (124.0) (196.6) Other income, net 3.2 4.3 1.1 5.8 EBITDA from continuing operations $ 134.2 $ 91.6 $ 510.1 $ 391.4 Special items, before tax (23.9) 22.4 20.1 114.6 Interest expense included in special items — (0.1) (2.3) (2.3) Depreciation and amortization included in special items (0.3) — (1.5) (1.9) Adjusted EBITDA $ 110.0 $ 113.9 $ 526.4 $ 501.8 2 Year Ended December 31, Adjusted Free Cash Flow Calculation 2024 2023 Cash provided by operating activities $ 256.8 $ 201.6 Taxes paid on gain on sale of business — 104.1 One-time payout associated with deferred compensation plans 20.8 — Adjusted cash provided by operating activities $ 277.6 $ 305.7 Capital expenditures (121.9) (119.4) Adjusted free cash flow $ 155.7 $ 186.3 Three Months Ended March 31, 2024 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 49.4 $ 0.54 Special items, after-tax 5.5 0.06 Amortization expense, after-tax 14.9 0.16 Adjusted net income / EPS $ 69.8 $ 0.76 (1) Per share amounts may not recalculate from figures presented herein due to rounding 3 AVNT February Investor Presentation_2_25.pdf Avient Investor Presentation - February 2025_w_Non-GAAP.pdf Avient February 2025 Investor Presentation_w_non-GAAP.pdf Non-GAAP- IR Deck - AVNT-2024.12.31 2.06.25 12PM.pdf Attachment

Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. O U R VA LUAT I O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 5.4 8.5 10.1 9.8 13.8 12.8 12.1 11.8 10.2 21.0 19.2 16.8 13.7 13.6 8.8 8.7 8.7 8.3 8.0 5.6 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 od ay ) R P M P P G K W R A V Y FU L A LB E C L H X L A S H FM C B N R E M N U N V R C E S C L H U N Historic Multiple APPENDIX Performance Additives 15% Pigments 13% TiO2 11% Dyestuffs 3%Polyethylene 12% Nylon 6% Polypropylene 5% Other Raw Materials 30% Styrenic Block Copolymer 5% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 48 • Significant raw material price inflation and tight inventory continued in Q1 2022 o The average cost of hydrocarbon based materials was up 30% o The average cost of non-hydrocarbon based materials was up 20% • Additionally, we continued to experience other supply chain challenges during Q1 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% EMEA 25% Asia 16% Latin America 9% 2021 SEGMENT, END MARKET AND GEOGRAPHY 50 GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 19% Industrial 16% Building and Construction 10% Telecommunications 4% Energy 2% END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M (1) Transportation 11% Healthcare 15% Packaging 34% Consumer 21% Healthcare 8% Industrial 16% Building & Construction 10% Transportation 9% Energy 1% Telecommunications 1% C O L O R , A D D I T I V E S & I N K S 2 0 2 1 R E V E N U E | $ 2 . 4 B I L L I O N US & Canada 32% EMEA 40% Asia 21% Latin America 7% END MARKET REGION 51 All charts reflect 2021 financials S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Consumer 27% Healthcare 10% Packaging 7% Telecommunications 16% Transportation 11% Industrial 11% Building & Construction 11% Energy 7% 2 0 2 1 R E V E N U E | $ 9 1 9 M I L L I O N END MARKET US & Canada 55% EMEA 25% Asia 20% REGION 52 All charts reflect 2021 financials D I S T R I B U T I O N Healthcare 26% Consumer 23% Packaging 5% Industrial 20% Transportation 16% Building and Construction 8% Energy 1% Telecommunications 1% US & Canada 80% Asia 3% Latin America 17% END MARKET REGION K E Y S U P P L I E R S 2 0 2 1 R E V E N U E | $ 1 . 6 B I L L I O N 53 All charts reflect 2021 financials T O T A L C O M PA N Y R E G I O N A L S A L E S B Y E N D M A R K E T Packaging 30% Consumer 26%Healthcare 13% Industrial 14% Building & Construction 5% Telecommunications 2% Energy 2% Asia (16% of sales) Transportation 8% Packaging 32% Consumer 13% Healthcare 5% Industrial 17% Building & Construction 12% Telecommunications 5% Energy 4% EMEA (25% of sales) Transportation 12% 54 Consumer 25% Healthcare 19% Packaging 10% Industrial 17% Building & Construction 10% Telecommunications 4% Energy 2% US & Canada (50% of sales) Transportation 13% Packaging 38% Consumer 33% Healthcare 8% Industrial 10% Building & Construction 5% Telecommunications 1% LATAM (9% of sales) Transportation 5% All charts reflect 2021 financials 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. Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating Income $ 128.6 $ 7.8 $ 136.4 Income before income taxes $ 111.1 $ 7.7 $ 118.8 Income tax expense - GAAP (26.6) — (26.6) Income tax impact of special items — (2.0) (2.0) Tax adjustments — 1.5 1.5 Net income attributable to noncontrolling interests (0.3) — (0.3) Net income attributable to Avient shareholders $ 84.2 $ 7.2 $ 91.4 EPS $ 0.91 0.08 $ 0.99 Weighted-average diluted shares 92.3 92.3 92.3 1 Three Months Ended March 31, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating Income $ 120.4 $ 2.4 $ 122.8 Income before income taxes $ 102.6 $ 2.4 $ 105.0 Income tax expense - GAAP (22.9) — (22.9) Income tax impact of special items — (0.9) (0.9) Tax adjustments — 1.1 1.1 Net income attributable to noncontrolling interests (0.4) — (0.4) Net income attributable to Avient shareholders $ 79.3 $ 2.6 $ 81.9 EPS $ 0.86 0.03 $ 0.89 Weighted-average diluted shares 92.2 92.2 92.2 Year Ended December 31, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating income $ 381.2 $ 47.8 $ 429.0 Income from continuing operations before income taxes $ 304.6 $ 57.1 $ 361.7 Income tax expense - GAAP (74.0) — (74.0) Income tax impact of special items — (13.0) (13.0) Tax adjustments — 5.9 5.9 Net income attributable to noncontrolling interests 0.2 — 0.2 Net income from continuing operations attributable to Avient shareholders $ 230.8 $ 50.0 $ 280.8 EPS $ 2.51 0.54 $ 3.05 Weighted-average diluted shares 92.1 92.1 92.1 2 Reconciliation of EBITDA by Segment Three Months Ended March 31, Year Ended December 31, 2022 2021 2021 Operating income: Color, Additives and Inks $ 94.5 $ 88.8 $ 303.1 Specialty Engineered Materials 39.7 34.2 132.0 Distribution 24.2 24.0 93.2 Corporate and eliminations (29.8) (26.6) (147.1) Operating income $ 128.6 $ 120.4 $ 381.2 Items below OI in Corporate: Other income, net $ (0.6) $ 1.5 $ (1.3) Depreciation & amortization: Color, Additives and Inks $ 26.0 $ 27.4 $ 105.7 Specialty Engineered Materials 7.8 7.8 31.7 Distribution 0.2 0.2 0.8 Corporate and eliminations 3.8 1.7 7.7 Depreciation & Amortization $ 37.8 $ 37.1 $ 145.9 EBITDA: Color, Additives and Inks $ 120.5 $ 116.2 $ 408.8 Specialty Engineered Materials 47.5 42.0 163.7 Distribution 24.4 24.2 94.0 Corporate and eliminations (26.0) (24.9) (140.7) EBITDA $ 165.8 $ 159.0 $ 525.8 Reconciliation of Sales, Operating Income and EBITDA - Distribution Year Ended December 31, 2006 2011 2016 Sales $ 732.8 $ 996.5 $ 1,071.0 Operating income 19.2 56.0 68.2 Depreciation & amortization 1.5 0.7 0.7 EBITDA $ 20.7 $ 56.7 $ 68.9 3 Three Months Ended March 31, Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2022 2021 2021 Net income from continuing operations – GAAP $ 84.5 $ 79.7 $ 230.6 Income tax expense 26.6 22.9 74.0 Interest expense 16.9 19.3 75.3 Depreciation and amortization from continuing operations 37.8 37.1 145.9 EBITDA $ 165.8 $ 159.0 $ 525.8 Special items, before tax 7.7 2.4 57.1 Depreciation and amortization included in special items (2.1) (0.5) (1.7) Adjusted EBITDA $ 171.4 $ 160.9 $ 581.2 4 AVNT May IR Presentation.pdf Avient Corporation �investor meetings DISCLAIMER Avient: Who We Are Who we are – Vision, Strategy, Culture What we do: material science Sustainability for a Better Tomorrow Slide Number 7 Slide Number 8 Slide Number 9 Slide Number 10 Q1 2022 SALES AND OPERATING INCOME�(Total Company) Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 FIT with Four Pillar Strategy Dyneema® overview Slide Number 22 Slide Number 23 Dyneema® in the Value Chain Demand trends Products Avient’s Existing Composites Portfolio Avient’s Composites Portfolio�Sales and Ebitda Distribution Divestiture Considerations Distribution highlights Dyneema® Transaction Overview Capital structure / Leverage Two-Year Leverage Goal Pro forma modeling Our Specialty Journey Acquisition History Clariant Color Acquisition Specialty Transformation Culture and People Our Specialty Journey continues Slide Number 41 PEER COMPARISONS Avient is asset light High free cash flow conversion 2022 ebitda margins vs. peers Our valuation versus peers Slide Number 47 Slide Number 48 Slide Number 49 �2021 segment, end market and Geography Slide Number 51 Slide Number 52 Slide Number 53 Slide Number 54 Masseto IR Presentation - 4.19 645pm w Non GAAP Recs.pdf Masseto IR Presentation - 4.19 (515pm) - with attachments.pdf

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