Factors that could cause our actual results to differ materially from those implied by for ward -looking statements are described in detail in Par t l of the Form 10 - K . Khandpur President and CEO 2024 Performance & Highlights Sales: $3.24B +3% GAAP EPS: $1.84 Adjusted EPS(1): $2 .66 +13% Adjusted EBITDA(1): $526M +5% Adjusted EBITDA Margin(1): 16.2% +20bps Dividend Increase: 14 Consecutive Years Great Place to Work® Certification 6 Consecutive Years (1)Reconciliations of these measures to the most directly comparable generally accepted accounting principles (GA AP) financial measures are included in this annual report on a supplemental page that follows the Form 10-K . THIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING THIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING Reconciliation of Non-GAAP Financial Measures (Unaudited) (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.

ECCOH™ LOW SMOKE AND FUME, NON-HALOGEN FORMULATIONS PRODUCT SELECTION GUIDE ECCOH™ Low Smoke and Fume, Non-Halogen Solutions *Dry Silane abbreviated as DS **Cross-linked using Sioplas method 5549 UV Teck-90 5700 5801 UV 5865 5982 UV 6010 6151 6638 UV XLS 8001 APPLICATION Type Jacket Jacket Jacket Jacket Jacket Jacket Insulation Tight buffer, Micro-tube Jacket Jacket CABLE Type LV, Data LV LV, Data, OFC LV, Data, OFC Data, OFC LV, OFC LV OFC Data, OFC LV MARKETS Type B & C, Industrial Industrial, Teck-90 B & C, Industrial Industrial, Oil & Gas, Shipboard B & C B & C, Industrial Automotive B & C, Industrial B & C, Industrial B & C, Shipboard Cross-linked No No No Yes No No Yes No No Yes Cross-linking Method* N/A N/A N/A DS/E-beam N/A N/A DS/E-beam N/A N/A Sioplas GENERAL PROPERTIES Properties as Thermoset x x x SG g/cm³ 1.59 1.54 1.60 1.50 1.57 1.52 1.38 1.46 1.48 1.48 MFI, 150°C/21.6 Kg g/10 min 2.8 5 6 3.5 4 5.9 4.4 6 3 6 Hardness Shore D 44 54 50 46 50 54 56 53 53 49 Tensile psi 1740 2610 1595 1800 1740 2320 3336 2466 2030 2030 Elongation % 160% 200% 136% 133% 180% 150% 145% 160% 175% 160% LOI % 45% 36% 51% 39% 45% 41% 30% 33% 42% 33% Low temp brittleness (LTB) °C -26.5°C -49°C -10.5°C -30°C -39°C -38.5°C -41°C -35.5°C -26 -40.5 Max. Continuous Use Temp °C 90°C 90°C 105°C 90°C 125°C 90°C 90°C 105°C SMOKE DENSITY (MAX) Flaming Mode 45 104 312 163 312 118 98 60 101 121 Non-Flaming Mode 212 279 303 416 297 369 296 223 296 393 FEATURES ESCR x Flame Performance x x x x x Heat Resistance x x x High Char Forming x Low Temperature Performance x x Mechanical Properties x x x Oil Resistance x UL Listed Halogen-Free x x x FEATURES Wire and Cable • Highly flame retardant • Very low toxicity and smoke density • Many grades are cross-linkable • Can be processed with color or additive concentrate, and with UV stabilizer Pipe and Fittings • Highly flame retardant • Very low toxicity and smoke density • Suitable for extrusion, injection molding ECCOH™ ECCOH™ non-halogenated formulations re designed to be highly flame retardant with extremely low toxicity and smoke density.

Sustainability Spotlight Hydrocerol™ Chemical Foaming Agents Reflection electron microscopy (REM) view of foamed plastic Hydrocerol Chemical Foaming Agents are supplied as concentrates CHEMICAL FOAMING AGENTS (CFAs) are chemical substances that react under the influence of heat to release gas into the plastic matrix during the manufacturing process of plastic parts. The gases form a cellular foam structure in the plastic that reduces the amount of material needed and hence the part’s weight.

Our continuous fiber reinforced thermoset composite materials are highly customizable and manufactured with a proprietary pull-forming process to optimize the mechanical properties of each fiber. Avient’s reinforced composite technologies use carbon, glass and aramid fibers with custom formulated thermoset or thermoplastic resins in continuous forming processes

During the injection-molding step, the TPE insert forms a strong bond with the substrate, such as polypropylene or polyethylene, used for the container closure. Traditional vulcanized rubber products require application of adhesives to bond to the closure, and this adhesive bond has a greater potential for failure than the chemical bond formed between a TPE and  polymer substrate.

You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. Reduce Scope 1 & 2 greenhouse gas emissions by 60% by 2030, and operations carbon neutral by 2050. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently.

Chemical foaming agents, materials that generate gas upon decomposition, also act as nucleating agents.

Foaming Performance: Maximum gas generation resulting from no premature foaming enables greater process control

This new line incorporates a plant-based carrier system and leads to a cleaner working environment than is typical with dry powder pigments.

Thermal Conductivity for Heat Exchanger in Gas Recovery Therma-Tech™ provide thermal conductivity for heat exchanger in gas recovery