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Add performance improvements and color in one simple step ColorMatrix™ Lactra™ Four, One, Zero Engineered Fiber Solutions

All Rights Reserved 2025 19 Specialty Engineered Materials – Q1 2025 performance Sales 314 308 Q1 2024 Q1 2025 Flat EXCL. All Rights Reserved 2025 Avient 2024 sales BUSINESS SEGMENTS END MARKETS REGIONS 63% 37% S E M C AI 23% 20% 15% 10% 10% 8% 7% 4% 3% Packaging Telecom Energy Defense Healthcare Building & construction Transportation Industrial Consumer 41% 35% 18% 6% US & Canada Latin America Asia Europe, Middle East and Africa 25Copyright © . All Rights Reserved 2025 30 Reconciliation of Non-GAAP financial measures Reconciliation to EBITDA and Adjusted EBITDA Three months ended March 31, 2025 2024 $ Millions $ Millions Sales Color, Additives and Inks 519.7 515.3 Specialty Engineered Materials 308.4 314.4 Corporate (1.5) (0.7) Sales 826.6 829.0 Operating income Color, Additives and Inks 78.6 74.8 Specialty Engineered Materials 47.1 53.4 Corporate (125.0) (34.2) Operating income 0.7 94.0 Depreciation and amortization Color, Additives and Inks 21.7 21.9 Specialty Engineered Materials 21.5 19.6 Corporate 2.1 2.8 Depreciation and amortization 45.3 44.3 EBITDA Earnings before interest, taxes, depreciation and amortization Color, Additives and Inks 100.3 96.7 Specialty Engineered Materials 68.6 73.0 Corporate (122.9) (31.4) Other expense, net (0.4) (0.9) EBITDA 45.6 137.4 Special items, before tax 101.2 6.2 Interest expense included in special items (1.7) - Depreciation and amortization included in special items (0.4) (0.5) Adjusted EBITDA 144.7 143.1 Adjusted EBITDA as a percent of sales Color, Additives and Inks 19.3% 18.8% Specialty Engineered Materials 22.2% 23.2% PAGE 2 OF 3 Copyright © .

As one of the world’s only backward-integrated HPPE producers, Dyneema® maintains complete control over every stage of the fiber manufacturing process, from raw material to polymer and fiber production. Our expanding portfolio of offerings includes colorants, advanced composites, functional additives, engineered materials, and Dyneema®, the world’s strongest fiber™. SEARCH INVESTOR NEWS

XES1302141C WILFLEX ONE YELLOW SPARKLE XES1302141B WILFLEX ONE GOLD GLITTER XES1302140D WILFLEX ONE LIQUID SILVER

Custom Engineered Polymer Formulations for 5G wireless telecom equipment meet specific performance requirements and reduce manufacturing lead times for faster design qualification.  They also resist abrasion and ultraviolet (UV) rays to maintain long-lasting aesthetics, and eliminate assembly steps with a one-step overmolding process. SEARCH INVESTOR NEWS

Additionally, Avient introduced Water Project Awards for projects completed in 2024 in categories such as: Most Creative Solution, Best Low- or No-Cost, People’s Choice, and Best Overall.

KEY CHARACTERISTICS • Highly flame retardant: Flame retardancy helps prevent fire and to limit damage if one starts • Non-halogenated: During a fire, there are no ingredients to cause acidic gas emissions from the polymer, which can damage equipment and buildings • Low smoke: In the event of fire, people are more able to find the escape exit and fire fighters can quickly find the source of the fire • Low toxicity: People are not likely to be overcome by toxic fumes • Low dripping: No flaming droplets are likely to propagate a fire or injure evacuees • Manufacturing efficiency: Easy processing with a smooth surface finish MARKETS AND APPLICATIONS The ECCOH range of specialty polymers help manufacturers meet CPR requirements for power, control and communication cables (including optical fiber cables) used in buildings. KEY REQUIREMENTS FINAL CABLE Ø = 7.4–7.8mm WIRE Ø 1.37mm Copper 1.5mm2 INSULATION Ø 2.8mm WT: 0.8mm XLPE or LSFOH SHEATHING WT required to achieve the cable diameter LSFOH EUROCLASS B2ca s1 d1 a1 EXAMPLE: IMPACT OF CABLE DESIGN ON CPR EUROCLASS SOLUTIONS AVAILABLE SHEATHING INSULATION SHEATHING LOI (%) EUROCLASS ECCOH™ 5549 LM XLPE 45 Dca s2 d2 a1 ECCOH™ 5549 LM ECCOH™ XLS 8001 45 B2ca s1 d1 a1 ECCOH™ 5924 ECCOH™ XLS 8001 37 B2ca s1 d1 a1 CABLE DESIGN Sheathing Insulation Wire ECCOH™ SHEATHING GRADES APPLICATIONS ECCOH GRADES MFR (150C/ 21.6kg) TS (MPa) EB (%) LOI (%O2) CPR* (Class Perfor- COMMENTS LAN/coaxial sheathing1 5549 LM 3.0 11.0 160 45 B2ca Excellent flame retardancy, best in class in char formation with very low dripping and low heat release. Optical fiber sheathing1 5549 LM 3.0 11.0 160 45 B2ca Excellent flame retardancy, best in class in char formation with very low dripping and low heat release.

KEY CHARACTERISTICS • Highly flame retardant: Flame retardancy helps prevent fire and to limit damage if one starts • Non-halogenated: During a fire, there are no ingredients to cause acidic gas emissions from the polymer, which can damage equipment and buildings • Low smoke: In the event of fire, people are more able to find the escape exit and fire fighters can quickly find the source of the fire • Low toxicity: People are not likely to be overcome by toxic fumes • Low dripping: No flaming droplets are likely to propagate a fire or injure evacuees • Manufacturing efficiency: Easy processing with a smooth surface finish MARKETS AND APPLICATIONS The ECCOH range of specialty polymers help manufacturers meet CPR requirements for power, control and communication cables (including optical fiber cables) used in buildings. KEY REQUIREMENTS FINAL CABLE Ø = 7.4–7.8mm WIRE Ø 1.37mm Copper 1.5mm2 INSULATION Ø 2.8mm WT: 0.8mm XLPE or LSFOH SHEATHING WT required to achieve the cable diameter LSFOH EUROCLASS B2ca s1 d1 a1 EXAMPLE: IMPACT OF CABLE DESIGN ON CPR EUROCLASS SOLUTIONS AVAILABLE SHEATHING INSULATION SHEATHING LOI (%) EUROCLASS ECCOH™ 5549 LM XLPE 45 Dca s2 d2 a1 ECCOH™ 5549 LM ECCOH™ XLS 8001 45 B2ca s1 d1 a1 ECCOH™ 5924 ECCOH™ XLS 8001 37 B2ca s1 d1 a1 CABLE DESIGN Sheathing Insulation Wire ECCOH™ SHEATHING GRADES APPLICATIONS ECCOH GRADES MFR (150C/ 21.6kg) TS (MPa) EB (%) LOI (%O2) CPR* (Class Perfor- COMMENTS LAN/coaxial sheathing1 5549 LM 3.0 11.0 160 45 B2ca Excellent flame retardancy, best in class in char formation with very low dripping and low heat release. Optical fiber sheathing1 5549 LM 3.0 11.0 160 45 B2ca Excellent flame retardancy, best in class in char formation with very low dripping and low heat release.

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