FX +4.6% FX -1.5% Total Avient +3.1% Note: Regional Sales Percentages exclude impact of foreign exchange Q2 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $525 $542 Q2 23 Q2 24 $94 $108 Q2 23 Q2 24 19.9% Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 7 17.9% +200 bps * * * Adjusted EBITDA Margin % • Organic sales growth in all regions led by Americas • Raw material deflation combined with cost reduction actions drove EBITDA margin expansion + 3% (+5% excluding FX) + 15% (+17% excluding FX) Q2 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $301 $308 Q2 23 Q2 24 $60 $64 Q2 23 Q2 24 20.6% Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 8 19.8% +80 bps * * * Adjusted EBITDA Margin % • Sales growth in consumer, healthcare and building & construction end markets offset by weaker demand in telecommunications • EBITDA margin expansion driven by positive end market mix as well as raw material deflation + 2% (+4% excluding FX) + 7% (+8% excluding FX) 2024 G U IDA N CE FY 2024 GUIDANCE Previous (May 7) Current Adjusted EBITDA $510 to $535 million $515 to $540 million Adjusted EPS $2.50 to $2.65 $2.55 to $2.70 Interest Expense $105 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 10 Q3 2024: Adjusted EPS of $0.62 11 Highlights • Provides performance updates on 2030 Sustainability Goals • Reduced company’s Scope 1 & 2 GHG emissions by 48% since 2019 • Highlights ESG performance ratings, certifications, and awards, including recent upgrades by Ecovadis to Gold and CDP to A- • Reflects Great Place to Work® culture focused on health, safety and employee engagement 2023 SUSTAINABILITY REPORT 11 Sustainability for a Better Tomorrow 2023 SUSTAINABILITY REPORT 12 • Investor Day to be held December 4, 2024 in New York, NY • The focus will be to do a deep dive on the Company’s strategy • Further details to be communicated 2024 AVIENT INVESTOR DAY AP P EN D IX 15 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% 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% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 17 (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 US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 18 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION US & Canada 52% EMEA 35% Asia 13% 19 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 20 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. In addition, operating income before the effect of special items is a component of Avient’s annual incentive plans and is used in debt covenant computations. Three Months Ended June 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 33.6 $ 0.36 $ 22.1 $ 0.24 Special items, after-tax 21.8 0.24 19.6 0.21 Amortization expense, after-tax 14.8 0.16 16.2 0.18 Adjusted net income / EPS $ 70.2 $ 0.76 $ 57.9 $ 0.63 Three Months Ended June 30, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 33.8 $ 22.3 Income tax expense 11.2 10.4 Interest expense, net 26.6 29.4 Depreciation & amortization 44.9 47.6 EBITDA from continuing operations $ 116.5 $ 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales 16.9 % 15.9 % 1 Three Months Ended June 30, 2024 2023 Sales: Color, Additives and Inks $ 542.0 $ 524.5 Specialty Engineered Materials 308.1 300.8 Corporate (0.4) (0.9) Sales $ 849.7 $ 824.4 Operating income: Color, Additives and Inks $ 86.1 $ 68.0 Specialty Engineered Materials 42.8 39.7 Corporate (56.4) (45.4) Operating income $ 72.5 $ 62.3 Depreciation & amortization: Color, Additives and Inks $ 21.8 $ 25.7 Specialty Engineered Materials 20.8 19.9 Corporate 2.3 2.0 Depreciation & amortization $ 44.9 $ 47.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 107.9 $ 93.7 Specialty Engineered Materials 63.6 59.6 Corporate (54.1) (43.4) Other expense, net (0.9) (0.2) EBITDA from continuing operations 116.5 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 19.9 % 17.9 % Specialty Engineered Materials 20.6 % 19.8 % 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 Q2 2024 Webcast Slides_for website_with non-GAAP_8_5.pdf IR Deck - AVNT-2024.06.30 - 8.02.24 1130AM.pdf Attachment Avient Q2 2024 Webcast Slides_for website_with non-GAAP.pdf AVNT cover slide.pdf

Cesa™ Anti-Block Slip LS Additives for low-temperature sealing layers in flexible polyolefin packaging FOOD PACKAGING IN A CHANGING MARKET In many food contact applications, flexible plastic packaging is replacing rigid packaging for varied reasons; it has lightweight characteristics, is easy to customize in any shape, and has a favorable carbon footprint. WHAT IT DOES Cesa™ Anti-Block Slip LS is a range of additives for flexible polyolefin packaging that helps convertors and brand owners switch from multi-material to mono-material packaging. The additive’s formulation ensures smooth and efficient processing of mono-material polyolefin films that contain low-temperature sealing layers, improving the overall performance of the packaging, and providing a reliable and user-friendly experience for both manufacturers and end-users.

Avient engineered a new customized formulation for the part, which provided both the processability required for extremely short cycle injection-compression molding, as well as including an additive to stabilize the material when in contact with copper. This additive protects the door from cracking as it comes into contact with copper particles over time. In addition, the new material also provides anti-static properties and low VOC levels, which helps the system adhere to regulations such as the Vehicle Interior Air Quality (VIAQ) standard.

ColorMatrix™ Amosorb™ Oxyloop-1 O2 Scavenging Additive to Enhance Recycling Part of the ColorMatrix™ Amosorb™ range, ColorMatrix Amosorb Oxyloop-1 is a recycling enhancer oxygen scavenging additive formulated to achieve leading results in terms of bottle-to-bottle recyclability. The solution is also formulated to increase packaging sustainability; colored bottles containing this additive are classified as recyclable for bottle-to- bottle recycling streams. In addition, governments are legislating for increased use of recycled material in single-use packaging.

From Cesa™ additives that extend equipment life, to OnColor™ colorants that provide creative special effects, to specialty engineered polymers, our technologies improve the performance and aesthetics of EV charging stations. Or, choose our Smartbatch™ Combination Colorants & Additives that incorporate custom colors with functional additives in a single, optimized formulation. SAFETY Equipment security, fire prevention, user safety, functional performance SOLUTIONS: Flame retardants, anti-static and conductive formulations, antimicrobials, light diffusion technology LONGEVITY Long service life, chemical resistance SOLUTIONS: Scratch and mar resistant additives, impact modifiers, reinforced materials, rheology modifiers, compatibilizers OUTDOOR DURABILITY & WEATHERABILITY UV protection, chemical resistance, wind and impact resistance, color stability, light spectrum management, polymer integrity SOLUTIONS: UV resistant formulations, dimensional stabilizers, antioxidants, IR reflective, scratch and mar resistant solutions, modifiers and compatibilizers SUSTAINABILITY Eco-conscious options, lightweighting, VOC or carbon emissions reduction, reduced energy use SOLUTIONS: Bio-derived colorants and additives, chemical foaming agents, molded-in metallics, post-consumer recycled (PCR) formulations VISUAL AESTHETICS Custom colors, special effects and enhancements SOLUTIONS: Metallic or chrome- look colorants, pearlescents, granite or marble effects, wood grains, glow-in-the-dark technology HEALTH & HYGIENE Protection from mold, mildew, bacteria and unwanted odors SOLUTIONS: Antimicrobial and antifungal technologies, surface energy modification GO-TO-MARKET SUPPORT We have resources beyond our product technologies to help you get to market faster and more effectively. • Streamlined product development services through Avient Design • Color inspiration and technical guidance from ColorWorks™ Design & Technology Centers • Risk mitigation through invaluable regulatory compliance support • Accelerated commercialization with UL testing and part validation, and UL- recognized colorants FOCUS AREA APPLICATIONS KEY REQUIREMENTS TECHNOLOGIES Visual Aesthetics • Cabinets and enclosures • User interfaces and touchpoints • Interactive touch screens • Lighting • Canopies • Side panels and base plates • Cables • Handles and grips • Closeouts • Informed color choices and customization options • Visual appeal for brand integrity • High- and low- gloss finishes • Consistent physical performance and dimensional stability • Special effect colorants • Smartbatch Combination Colorants & Additives • Custom and pre-colored formulations • ColorWorks Design & Technology Centers Outdoor Durability & Longevity • Cabinets and enclosures • Canopies • Side panels and base plates • Ventilation panels • Closeouts • Cable retractors • Interactive touch screens • Outdoor weathering • Extreme (hot/cold) temperature resistance • Flexibility and ductility • Impact resistance • Chemical resistance • UL-recognized materials • Flame retardant formulations • Impact modifiers • Surface energy modifiers • EMI/RFI shielding solutions • Thermal and electrical management technology Health & Hygiene • Cabinets and enclosures • User interfaces and touchpoints • Cables • Sockets • Handles and grips • Plugs and adaptors • Filters • Kiosks • Microbial and fungal efficacy • Safe to touch • Visual clarity • Surface energy modifiers • Antimicrobial and anti- fungal solutions Sustainability • Structural panels • Connectors and electrical components • Thermal modules • Cabinets and enclosures • Handles and grips • Lighting • Canopies • Side panels and base plates • Receptacles • Reduced part weight or materials consumed • Recyclability • VOC reduction • PCR incorporation • Lower carbon footprint • Chemical foaming agents • Molded-in color (MIC) metallics • Laser marking technologies • Eco-conscious raw materials • Bio-derived technologies • Post-consumer recycled (PCR) content • Lower carbon footprint solutions 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

By 2040, a circular economy has the potential to reduce the annual volume of plastics entering our oceans by 80%, reduce greenhouse gas emissions by 25%, generate savings of $200 U.S. dollars per year and create 700,000 net additional jobs.. In addition, one of the largest comparative studies on the impact of implementing a circular economy demonstrated a positive effect on employment, in part due to new jobs in recycling and remanufacturing. Solutions that Support the Circular Economy REDUCED ENERGY USE CESA™ Dry Additives CESA™ Release Additives OnCap™ CTR Process Optimization ColorMatrix™ Joule™ & Smartheat™ Infrared Absorber Specialty Low Cure Inks SiteCool™ Infrared Absorption Technologies BIO-DERIVED CONTENT reSound™ OM Bio-Derived Thermoplastic Elastomers reFlex™ Bio-Derived Plasticizer OnCap™ Bio Additives OnColor™ Bio Colorants reSound™ Natural Fiber Reinforced Formulations LIGHTWEIGHTING Glasforms™ Pultrusion Technologies Polystrand™ Continuous Fiber Composites IMPROVED RECYCABILITY CESA™ IR Black Additives CESA™ Extend Additives ColorMatrix™ Lactra™ SX Light Blocking Additive for PET ColorMatrix™ Ultimate™ UV Light Barrier ColorMatrix™ Capture™ Oxygen Scavenger for PET ColorMatrix™ Triple A™ Acetaldehyde Scavenging Additives ColorMatrix™ Reprize™ IV Builder for PET OnColor™ IR Sortable Black for Recyclable Packaging Bergadur™ Post-Industrial Recycled Content Polyester Formulations Nymax™ PIR Post-Industrial Recycled Nylon Formulations Maxxam™ FR Flame Retardant Polyolefin Formulations Predictions Gartner predicts circular economies will replace linear economies in 10 years, noting that supply chain leaders must adapt to circular models in order to keep up in a marketplace with a growing emphasis on sustainability.

5050-156 LATEX ADDITIVE

ECOLUTION FLASH ADDITIVE

LIB0055 LIBRA MATTE ADDITIVE

FMI ADDITIVE 1049-43