DURABILITY High Impact Strength, Weatherability SOLUTION: PP, HDPE, ASA, Nylon Engineered Formulations AESTHETIC APPEAL Custom Color & Special Effects, Paint Replacement SOLUTION: Custom Polymer Colorants, Pre-Colored High-Gloss Thermoplastics THERMAL MANAGEMENT LED Heat Sinks, Design Flexibility SOLUTION: Thermally Conductive Formulations EXTREME PERFORMANCE Chemical & Fire Resistance, High Temperature Performance SOLUTION: Nylon Engineered Formulations, Long Fiber Reinforced Composites, Continuous Fiber Composite Tapes & Laminates, Flame Retardant Polyolefin Formulations STRUCTURAL INTEGRITY High Stiffness-to-Weight Ratio, Metal Replacement SOLUTION: Pultruded Rods, Tubes & Custom Profiles, Long Fiber Reinforced Composites SENSORY EXPERIENCE Vibration Damping, Durability, Customization, Custom Color, Low Friction SOLUTION: Thermoplastic Elastomers (TPEs), Custom Polymer Colorants, Internally Lubricated Formulations, Advanced Composite Springs STRENGTH & STABILITY Excellent Dimensional Stability, High Stiffness, Impact Resistance SOLUTION: Short & Long Fiber Formulations, Continuous Fiber Composite Tapes & Laminates SURFACE PROTECTION Performance Enhancements SOLUTION: Scratch & Mar Resistance, UV Stable Additives, Anti-Static Additives STRUCTURAL PERFORMANCE Corrosion Resistance, Lightweighting SOLUTION: Long Fiber Reinforced Composites, Nylon Engineered Formulations, Continuous Fiber Composite Tapes & Laminates, Chemical Foaming Additives METAL REPLACEMENT Lightweighting, Heat Management, Load Carrying Capability SOLUTION: Long Fiber Reinforced Composites, Continuous Fiber Composite Tapes & Laminates TACTILE EXPERIENCE Soft-Touch Feel, Durability SOLUTION: Thermoplastic Elastomers (TPEs) https://www.avient.com/industries/consumer/outdoor-recreation/powersports https://www.avient.com/industries/consumer/outdoor-recreation/powersports https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/maxxam-polyolefin-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/edgetek-engineered-polymer-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/edgetek-engineered-polymer-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer https://www.avient.com/products/polymer-colorants https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/artisan-pre-colored-thermoplastics-paint-replacement https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma http://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer http://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/long-fiber https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/long-fiber https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/polystrand https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/polystrand https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/maxxam-fr-flame-retardant-polyolefin-formulations https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/maxxam-fr-flame-retardant-polyolefin-formulations https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/long-fiber-thermoplastics https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/long-fiber-thermoplastics https://www.avient.com/products/polymer-colorants https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/lubrione-internally-lubricated-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/lubrione-internally-lubricated-formulations https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/advanced-composite-springs https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-scratch-mar-resistance-additives https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-scratch-mar-resistance-additives https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-antistatic-additives https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-antistatic-additives https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/nymax-bergamid-polymer https://www.avient.com/products/polymer-additives/foaming-agents/colormatrix-excelite-chemical-foaming-additives

Application Snapshot NIR _ REJOIN Final COSMETICS BRAND P E R S O N A L C A R E & C O S M E T I C S P A C K A G I N G • Excellent color performance in PCR resin • Combinable with functional additives • Parts manufactured with 100% PCR • Worked with customer to create circular packaging options with glamorous and striking special effects • Provided a solution that enabled added shine, ensuring the customer achieved beautiful packaging without compromising NIR detectability • Ensured the solution was available for many cosmetics packaging types, including bottles, make-up and caps OnColor™ NIR Black & Dark Sortable Colorants & Rejoin™ PCR Masterbatch for Polyolefins KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ir-sortable-black-recyclable-packaging

PowerPoint Presentation M E D I C A L C O N N E C T O R S • Ongoing production with no change to regular set up • Excellent processing and demolding performance • Color stability during processing • Excellent chemical and impact resistance • Enabled efficient ongoing production rates without changing any processing parameters • Safeguarded color stability and transparency during processing for optimal aesthetics • Ensured regulatory requirements for biocompatible ISO109931 and FDA were met • Provided a solution effective across a range of high-temperature polymers, including PEEK, PPSU, PES, PSU, PEI, LCP, and PPS Colorant Chromatics Evoluscend non- PFAS* high-temperature polymer mold release additive KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION PRODUCTIVITY + REGULATORY LEARN MORE ELECTRICAL COMPONENT OEM (*) A non-PFAS additive manufactured without non-intentionally added (NIA) PFAS or PTFE. (*) manufactured without intentionally added PFAS and without PTFE (1) refers to sulfone products only https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colorant-chromatics-evoluscend-non-pfas-high-temperature-mold-release-additive Slide Number 1

PRODUCT BULLETIN OnColor™ Recovered Black OnColor™ Recovered Black is a black color concentrate that utilizes polymer material recyclate including pigments recovered from separate manufacturing processes. Used as a general purpose black, it is a versatile and cost-effective solution suitable for applications where a basic black colorant is required. An effective means of repurposing recyclate, OnColor R3 Recovered Black keeps waste from being sent to a landfill by reprocessing it into usable colorant.

The featured technologies that follow are complemented by additional solutions at Avient, including internally lubricated polymers, reinforced composites, and pre-colored formulations and/or colorants in custom or standard firearms colors. PRODUCT SELECTION GUIDE AESTHETIC APPEAL Custom Colors, Special Effects, Color Stability SOLUTION: Custom Polymer Colorants, Pre-Colored Materials POSSIBILITIES: Grips, Stocks, Frames, Magazine Bases DYNAMIC COMFORT Shock Absorption, Vibration Damping SOLUTION: Thermoplastic Elastomers POSSIBILITIES: Recoil Pads, Straps TACTILE EXPERIENCE Soft Touch, Wet Grip SOLUTION: Thermoplastic Elastomers POSSIBILITIES: Grips, Slides, Triggers PERFORMANCE & FUNCTION Custom Weight, Toughness, Reduced Machining, Metal Replacement, Thermal Management and Stability, Wear Resistance SOLUTION: Structural Reinforced Formulations, Super Tough Formulations, Composite Heat Release Technology, High-Density Modified Formulations, Internally Lubricated Formulations POSSIBILITIES: Stocks, Frames, Barrels 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation. ENGINEERED POLYMER SOLUTIONS - FEATURES & CHARACTERISTICS Resin Nymax™ Formulations Characteristics Applications PA6 GF 600 A 14 Natural 14% Glass Reinforced Stocks, Frames, Receivers, Handguards, Forearms, Picatinny Rails, Grips PA6 GF 600 A 33 Natural 33% Glass Reinforced, Heat Stabilized PA6 NM6000-0026 HI BK 33% Glass Reinforced, Toughened PA6 GF 600 A 60 UV Black 60% Glass Reinforced, Heat Stabilized PA6 GF 600 A 33 Black 28 V 33% Glass Reinforced, Heat Stabilized, UV PA6 1010 A Black 13 Super Toughened, Heat Stabilized PA6 1010 A Natural Super Toughened, Heat Stabilized PA6 NM6000-0027 ST Black Super Toughened PA6 NM6000-00013 HS UV Black 50% GF, High Flow PA6 PA66 NM6600-0018 HI HS 14 Nat 14% Glass Reinforced, Toughened, Heat Stabilized PA66 GF 1200 A 33 HS Black 22 33% Glass Reinforced, Heat Stabilized PA66 GF 1200 A 33 HS Natural 33% Glass Reinforced, Heat Stabilized PA66 NM6600-0019 HI HS 33 Nat 33% Glass Reinforced, Toughened, Heat Stabilized PA66 NM6600-0020 HI HS 43 Nat 43% Glass Reinforced, Heat Stabilized PA66 1200 A L Natural Unreinforced PA66 1200 A ZIP 22 Natural Unreinforced PA66 NM6600-0021 ST Black Super Toughened PA66 NM 1200 MT HS Black Toughened, Heat Stabilized PA66 NM 1200 MT HS Natural Toughened, Heat Stabilized Specialty Products Color Characteristics Applications Edgetek™ ET6200-0031 Black Black 20% Glass Reinforced PA12 Stocks, Frames, Receivers, Handguards, Forearms, Picatinny Rails, Bolt Carriers, Grips Gravi-Tech™ X GT 33991-05A-01-3 Copper 3sg, PA6, Copper Gravi-Tech™ X GT-30197-001-P4 Gray 4sg, PA610, Tungston Gravi-Tech™ GT 6400-0001 GRV 5.0 Black 5sg, PA610, Tungston Thermoplastic Elastomers Durometer OM Substrate Color Characteristics Applications OnFlex™ AF 7210 25-90A PP Black/Natural General Purpose with UV Stabilizer Grips, Recoil Pads, Gun Straps Dynaflex™ G7900 30-90A PP Black/Natural General Purpose Versaflex™ XP 2850 50A PP Natural Wet Grip Technology Versaflex™ VDT 4202-40 40A PP Black/Natural Vibration Damping Versaflex™ VDT 5120-40 40A PA Black/Natural Vibration Damping Versaflex™ OM6059-9 60A PA Black High Flow Versaflex™ OM6258 60A PA Black/Natural Enhanced Bond

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Color revenue synergies, that will drive long-term revenue growth in excess of GDP o Clariant color cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered.

Consider combining comfort with color and performance properties using enhanced soft touch GLS™ TPE materials for even better results. COLOR: TPEs can be customized with bright colors and special effects such as glimmers, sparkles and pearlescents, as well as shine levels such as eye-catching high gloss, which conveys a high-tech, high-fashion aesthetic. TPEs play an important role in this evolution by enabling designers to add ergonomic grips in appealing textures and colors.

These advanced, customizable formulations are ISO 10993 compliant, compatible with gamma, autoclave, or EtO sterilization, and come in pre- colored or natural grades. STANDARD COLORS FOR BIOPHARMACEUTICAL APPLICATIONS GLASS FILL COLOR PRODUCT NAME Bright White HC8910-0004 RS 20% HC8910-0017 RS 33% HC8910-0018 RS Cool Gray 1C HC8910-0005 RS 20% HC8910-0006 RS Cool Gray 3C HC8910-0007 RS 20% HC8910-0008 RS Warm Gray 1 C HC8910-0009 RS 20% HC8910-0010 RS TPX 12-0703 Tan HC8910-0011 RS 20% HC8910-0012 RS 542C Blue HC8910-0013 RS 20% HC8910-0014 RS 301C Blue HC8910-0015 RS 20% HC8910-0016 RS Colors may vary from actual color shown

STRENGTH & FLEX Excellent Dimensional Stability, High Stiffness, Impact Resistance SOLUTION: Short & Long Fiber Formulations, Continuous Fiber Composite Tapes & Laminates DURABILITY Density, Stiffness, Strength SOLUTION: Short & Long Fiber Formulations SURFACE PROTECTION Performance Enhancements, Chemical Resistance SOLUTION: Scratch & Mar Resistance, UV Stable Additives TACTILE EXPERIENCE Soft Touch, Slip Resistance SOLUTION: Thermoplastic METAL REPLACEMENT High Stiffness-to-Weight Ratio, Lightweighting, Buoyancy SOLUTION: Continuous Filament Winding Technology EXTREME PERFORMANCE Waterproof Seals & Closures SOLUTION: Thermoplastic DYNAMIC COMFORT Durability, Customization, Shock Absorption SOLUTION: Thermoplastic Elastomers COLOR RESILIENCE Excellent Adhesion to Substrates, Weatherability SOLUTION: Plastisol Textile Inks FUNCTIONALITY High Stiffness, Structural Integrity, Metal Replacement SOLUTION: Short & Long Fiber Formulations, Continuous Fiber Composite Tapes & Laminates AESTHETIC APPEAL Custom Colors, Patterns & Tones SOLUTION: Custom Polymer Colorants, Specialty Additives RESILIENCE Weatherability, Longevity SOLUTION: Specialty Engineered Polymer Formulations For more on material solutions for outdoor equipment, visit avient.com/outdoor. https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-scratch-mar-resistance-additives https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-continuous-filament-wound-tubes-poles https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-continuous-filament-wound-tubes-poles https://www.avient.com/products/screen-printing-inks https://www.avient.com/products/screen-printing-inks https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations https://www.avient.com/products/polymer-colorants https://www.avient.com/products/polymer-colorants https://www.avient.com/products/polymer-additives https://www.avient.com/outdoor https://www.avient.com/outdoor

FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT $487 $522 $89 $97 (in millions) (in millions) 7 + 7% (+8% excluding FX) + 9% (+11% excluding FX) 18.3% +40 bps *18.7% * * Adjusted EBITDA Margin % • Sales growth driven by winning new product specifications in consumer & packaging, strong underlying demand in healthcare and improving demand in building & construction • Favorable mix and raw material deflation contributed to EBITDA margin expansion SPECIALTY ENGINEERED MATERIALS SEGMENT $268 $295 $51 $57 (in millions) (in millions) 8 • Sales growth driven by restocking in healthcare & consumer end markets and strong underlying demand for composite applications used in building & construction, energy and defense end markets • Favorable mix contributed to EBITDA margin expansion + 10% (+10% excluding FX) + 12% (+13% excluding FX) 19.0% +40 bps *19.4% * * Adjusted EBITDA Margin % 2024 G U IDA N CE FY 2024 GUIDANCE Previous (Aug 6) Current Adjusted EPS $2.55 to $2.70 $2.63 to $2.67 Adjusted EBITDA $515 to $540 million $525 to $530 million Interest Expense $105 million $104 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures & Investment in S/4 Hana ~$140 million ~$140 million 10 11 • Investor Day to be held December 4, 2024 at the NYSE, beginning at 10AM • The focus will be to do a deep dive on the Company’s strategy • Registration and microsite will be available in early November 2024 AVIENT INVESTOR DAY AP P EN D IX 18 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 41% 36% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 7% 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 21 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 22 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) 23 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. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 38.2 $ 0.41 $ 5.1 $ 0.06 Special items, after-tax 6.6 0.07 32.0 0.35 Amortization expense, after-tax 15.0 0.16 15.2 0.16 Adjusted net income / EPS $ 59.8 $ 0.65 $ 52.3 $ 0.57 (1) Per share amounts may not recalculate from figures presented herein due to rounding Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 38.7 $ 5.1 Income tax expense (benefit) 11.3 (0.1) Interest expense, net 26.9 30.3 Depreciation & amortization 45.1 46.4 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales 15.9 % 16.3 % 1 2024 2023 Sales: Color, Additives and Inks $ 521.5 $ 486.5 Specialty Engineered Materials 294.6 267.9 Corporate (0.9) (0.7) Sales $ 815.2 $ 753.7 Operating income: Color, Additives and Inks $ 75.5 $ 64.5 Specialty Engineered Materials 36.4 30.3 Corporate (34.7) (60.5) Operating income $ 77.2 $ 34.3 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 24.6 Specialty Engineered Materials 20.7 20.5 Corporate 2.5 1.3 Depreciation & amortization $ 45.1 $ 46.4 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 97.4 $ 89.1 Specialty Engineered Materials 57.1 50.8 Corporate (32.2) (59.2) Other (expense) income, net (0.3) 1.0 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.7 % 18.3 % Specialty Engineered Materials 19.4 % 19.0 % 2 Year Ended December 31, 2023 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 & amortization included in special items (1.9) Adjusted EBITDA $ 501.8 3 Avient Q3 Earnings Webcast Slides w_Appendix and Non-GAAP.pdf 2024 AVNT Q3 Webcast Slides w non-GAAP.pdf Q3 Avient Webcast Slides with Non-GAAP Recs.pdf Appendix Slides for webcast.pdf IR Deck - AVNT-2024.09.30 - 10.30.24 3PM (002).pdf Attachment