Maxxam™ Polyolefin Formulations Avient engineered a new customized formulation for the part using Maxxam™ Polyolefin Formulations. Maxxam™ formulations are based on polypropylene and polyethylene resins and can be filled and reinforced to satisfy the required performance characteristic.

Maxxam™ Polyolefin Formulations Avient engineered a new customized formulation for the part using Maxxam™ Polyolefin Formulations. Maxxam™ formulations are based on polypropylene and polyethylene resins and can be filled and reinforced to satisfy the required performance characteristic.

Maxxam™ Polyolefin Formulations Avient engineered a new customized formulation for the part using Maxxam™ Polyolefin Formulations. Maxxam™ formulations are based on polypropylene and polyethylene resins and can be filled and reinforced to satisfy the required performance characteristic.

For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 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 Adjusted EPS $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 EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation 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. Further, as a result of Avient's portfolio shift to a pure play specialty formulator, it has completed several acquisitions and divestitures which have resulted in a significant amount of intangible asset amortization. Three Months Ended March 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 49.4 $ 0.54 $ 20.8 $ 0.23 Special items, after-tax 5.5 0.06 22.3 0.24 Amortization expense, after-tax 14.9 0.16 15.1 0.16 Adjusted net income / EPS $ 69.8 $ 0.76 $ 58.2 $ 0.63 Three Months Ended March 31, Reconciliation to EBITDA and Adjusted EBITDA 2024 2023 Net income from continuing operations – GAAP $ 49.7 $ 21.3 Income tax expense 16.8 7.7 Interest expense, net 26.6 28.8 Depreciation and amortization 44.3 50.5 EBITDA from continuing operations 137.4 108.3 Special items, before tax 6.2 27.3 Depreciation and amortization included in special items (0.5) (1.8) Adjusted EBITDA $ 143.1 $ 133.8 Adjusted EBITDA as a percent of sales 17.3 % 15.8 % 1 Three Months Ended March 31, 2024 2023 Sales: Color, Additives and Inks $ 515.3 $ 537.0 Specialty Engineered Materials 314.4 309.7 Corporate (0.7) (1.0) Sales $ 829.0 $ 845.7 Operating income: Color, Additives and Inks $ 74.8 $ 65.6 Specialty Engineered Materials 53.4 43.1 Corporate (34.2) (51.6) Operating income $ 94.0 $ 57.1 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 25.8 Specialty Engineered Materials 19.6 21.2 Corporate 2.8 3.5 Depreciation & amortization $ 44.3 $ 50.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 96.7 $ 91.4 Specialty Engineered Materials 73.0 64.3 Corporate (31.4) (48.1) Other (expense) income, net (0.9) 0.7 EBITDA from continuing operations 137.4 108.3 Special items, before tax 6.2 27.3 Depreciation and amortization included in special items (0.5) (1.8) Adjusted EBITDA $ 143.1 $ 133.8 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.8 % 17.0 % Specialty Engineered Materials 23.2 % 20.8 % 2 Year Ended December 31, 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 Special items, after-tax 79.3 0.86 Amortization expense, after-tax 61.5 0.67 Adjusted net income / EPS $ 216.6 $ 2.36 Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Taxes paid on gain on sale of business 104.1 Adjusted cash provided by operating activities 305.7 Capital expenditures (119.4) Free cash flow $ 186.3 Year Ended December 31, 2023 Sales: Color, Additives and Inks $ 2,007.4 Specialty Engineered Materials 1,138.2 Corporate (2.8) Sales $ 3,142.8 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation and amortization included in special items (1.9) Adjusted EBITDA $ 501.8 Adjusted EBITDA as a percent of sales 16.0 % 3 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2014 Sales $ 2,622.4 $ 3,835.5 Net income from continuing operations – GAAP $ 133.5 $ 77.2 Income tax expense 29.7 11.2 Interest expense, net 63.1 62.2 Depreciation and amortization 57.1 123.9 EBITDA from continuing operations 283.4 274.5 Special items, before tax (34.0) 164.9 Depreciation and amortization included in special items — (23.1) Joint venture equity income (107.0) — Adjusted EBITDA $ 142.4 $ 416.3 Adjusted EBITDA as a percent of sales 5.4 % 10.9 % Year Ended December 31, Reconciliation of Adjusted EPS: 2006 2014 Net income from continuing operations attributable to Avient common shareholders $ 130.9 $ 78.0 Joint venture equity earnings, after-tax (68.5) — Special items, after-tax (21.2) 101.0 Special items, tax adjustments (30.0) (10.5) Amortization expense, after-tax 1.4 12.4 Adjusted net income from continuing operations attributable to Avient common shareholders $ 12.6 $ 180.9 Diluted shares 92.8 93.5 Adjusted EPS attributable to Avient common shareholders $ 0.14 $ 1.93 4 AVNT Q1 2024 Investor Presentation_w Non-GAAP.pdf IR Deck - AVNT-2024.03.31 5.09 4PM.pdf Attachment

As a specialty materials formulator, our proven ability to innovate materials that enable our customers’ sustainability goals, while delivering performance, is a key differentiator for our company. As we have transformed from a commodity company to a true specialty formulator, our guiding principles are outlined in our Sustainability Promise. LEARN MORE Visit Our Sustainability Site for More Information LEARN MORE HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 49 https://www.avient.com/industries/telecommunications https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/preperm-low-loss-dielectric-thermoplastics https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/preperm-low-loss-dielectric-thermoplastics https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/edgetek https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/sites/default/files/2020-09/case-study-one-pager-hybrid-5g-cable.pdf https://www.fiber-line.com/en/products/water-blocking-yarn https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.fiber-line.com/en/markets/fiber-optic-cables https://www.avient.com/company/sustainability/sustainability-report/products/markets Protective Materials Market Needs: Lighter Weight, High Strength, Reduce Carbon Footprint Improving safety for those that protect us—law enforcement, first responders, and military service personnel—while they keep communities around the world safe.

W A X M A T ® G R I P T A P E • Provide alternative material to traditional wax and EVA foam for grip on surfboards • Translucent appearance • Coextrude with polypropylene (PP) film • Excellent UV resistance • Customized formulation for exceptional hydrophobic grip and non-abrasive finish • Incorporated specialty additives to enhance UV resistance and inhibit mold growth • Solved technical processing challenges to achieve efficient coextrusion of materials and achieve optimal bonding to adhesive backing • Enabled customer to achieve market differentiation and expand into new markets and applications Custom GLS™ TPE Wet Grip Formulation KEY REQUIREMENTS WHY AVIENT?

The non-GAAP financial measures include: adjusted EPS, earnings before interest, tax, depreciation and amortization (EBITDA), adjusted EBITDA, net debt, Specialty platform operating income, Specialty platform gross margin percentage, adjusted operating income, return on invested capital, net debt/ EBITDA, and the exclusion of corporate charges in certain calculations. Platform operating income mix percentage 2005Y* 2006* 2008Y* 2010Y* 2013Y Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 17.6 $ 49.7 $ 57.2 Global Color, Additives and Inks 4.3 8.9 28.1 37.7 104.0 Designed Structures and Solutions - - - - 33.4 Specialty Platform $ 4.7 $ 12.8 $ 45.7 $ 87.4 $ 194.6 Performance Products and Solutions 75.7 64.2 31.3 54.0 56.0 Distribution 19.5 19.2 28.1 42.0 63.3 SunBelt Joint venture 91.9 102.9 28.6 18.9 - Corporate (51.5) 34.5 (425.1) (27.7) (82.4) Operating income (loss) GAAP $ 140.3 $ 233.6 $ (291.4) $ 174.6 $ 231.5 Less: Corporate operating expense 51.5 (34.5) 425.1 27.7 82.4 Operating income excluding Corporate $ 191.8 $ 199.1 $ 133.7 $ 202.3 $ 313.9 Specialty platform operating mix percentage 2% 6% 34% 43% 62% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment. PolyOne Investor Presentation��Gabelli & Company �5th Annual Specialty Chemical Conference�March 20, 2014� Forward – Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation Strategy and Execution Drive Results PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Proof of Performance & 2015 Goals Bridge To $2.50 Adjusted EPS By 2015 Innovation Drives Earnings Growth Unique and Innovative Solutions that Help Customers Win Debt Maturities & Pension Funding – 12/31/13 Free Cash Flow and Strong Balance Sheet Fund Investment Why Invest In PolyOne?

Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol. Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin.

Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol. Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin.

Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol. Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. Garibaldi 2405 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin.