FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT ( Q 3 2 0 2 4 P E R F O R M A N C E V S Q 3 2 0 2 3 ) $487 $522 Q3 23 Q3 24 $89 $97 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 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 ( Q 3 2 0 2 4 P E R F O R M A N C E V S Q 3 2 0 2 3 ) $268 $295 Q3 23 Q3 24 $51 $57 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 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 % 2 0 2 4 G U I D A N C E FY 20 24 GUIDA NC E 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 20 24 AVI ENT INVESTOR DAY A P P E N D I X 18 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 RA W MATERI AL BA SKET 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% 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 21 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR , AD DI TI VES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 22 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPEC IA LTY ENGI NEER ED MATERI ALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S 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% 23 B Y E N D M A R K E T 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.

All Rights Reserved 2025 27 NON-HYDROCARBON MATERIALS HYDROCARBON-BASED ~35% of the raw material basket including part of “Other raw materials” are hydrocarbon-based Raw material basket 16% 14% 9% 2% 37% 9% 5% 4% 4% Performance additives Pigments TiO2 Dyestuffs Styrenic block copolymers Polypropylene Nylon Polyethylene Other raw materials 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.

VALUE BENEFITS OF USING THE FLEXCART MICRO SYSTEM The FlexCart Micro metering system is market leading: • Robust and dependable system control • Reliable yield (typically 95%+) and sustainable packaging • Capability of data networking and remote internet support • Small footprint & LN standard recyclable delivery packaging FLEXCART™ MICRO LIQUID METERING SYSTEM Combined with sustainable delivery packaging ATTRIBUTE FLEXCART MICRO Footprint (LxW cm) 60 x 35 Controller options 3000 5000 Typical max. throughput (kg/hr) 250 Max. metering rate (cc/s) 10 Continuous use No Transfer pumps N/A Metering pumps PC/Peri Interchangeable cassette Yes Note: PC = Progressing Cavity Pump Peri = Peristatic Pump PLANETPAK™ CONTAINERS AND LN PACKAGING OPTIONS The FlexCart suite of metering systems is designed to work with the standardized PolyOne range of packaging typically achieving 99% reliable yield on continuous operating systems, while at the same time also achieving a sustainable packaging format in terms of full recyclability.

ONFLEX™ LO 7120-45 ONFLEX™ HT 40A-3S2131 BERGAFLEX™ BFIG 45A-300 Applications HVAC Seals HVAC Seals HVAC Seals Interior - direct airflow Interior & exterior Interior - direct airflow HVAC feature Low VOC/FOG & odor Low VOC/FOG & odor Low odor Cold air Hot air Cold air VDA 270 ≤3.0 ≤3.0 ≤3.0 VOC/FOG VDA 278 (VOC) 97µg/g 100µg/g 196µg/g VDA 278 (FOG) 1131µg/g 1116µg/g 1707µg/g DIN 75201 (FOG) 0.3mg 1.7mg 1.1mg 73°F (23°C) 72 hrs 15% 12% 15% 158°F (70°C) 22 hrs 45% 28% 50% 212°F (100°C) 22 hrs 70% 45% 90% Density 1.15 g/ml 1.00 g/ml 1.17 g/ml Processing Injection Molding Injection Molding/ Extrusion Injection Molding Bonds to Polypropylene Polypropylene/ Polyethylene Polypropylene Hardness range 35–65 Shore A 40–70 Shore A 35–65 Shore A HOW GLS TPEs MAKE THE DIFFERENCE IN AUTOMOTIVE HVAC APPLICATIONS • Low VOC/FOG – externally tested to VDA 278 and shows significant reductions in volatile organic compounds and fogging when compared to current TPE technologies • Industry standards – helps to achieve VOC/ FOG performance standards for improved VIAQ • Reduced manufacturing steps – does not require pre-drying or post heating to reduce VOC in parts produced • Design optimization – color can be added at the machine • Easy to process – can be extruded, injection molded and extrusion blow molded • Recyclable – Our automotive TPEs are compatible with most municipal recycle streams • Global support – Avient automotive TPEs can be manufactured in locations that are convenient to your operations, including North America, Europe or China To learn more about GLS TPEs for automotive applications, contact Avient at +1.844.4AVIENT (+1.844.428.4368).

BLOOD LANCET MANUFACTURER S E A L I N G R I N G • Compliance with strict regulations for medical materials • Excellent sealing performance • Good compression set • Provided a recycled TPE solutions compared to silicone without increasing system cost • Delivered a TPE that complied with ISO 10993-4 & -5 and USP Class VI • Supported a change to an injection molded material to ease production and enhance assembly capabilities Versaflex™ HC TPEs – OM1040-1 Grade KEY REQUIREMENTS WHY AVIENT?

REMAFIN EP White Masterbatches for Pharma Application Bulletin_CN * 可根据要求提供FDA/EU合规信息 用于药品包装的 REMAFIN™ EP 白色着色剂 应用公告 REMAFIN™ EP是一系列基于PE和PP的母粒，旨 在通过初级和次级药物包装的遮光来为口服、局 部、肠胃外、眼科和鼻腔用药提供保护。 主要特性 生产符合高于CAS编号级别的变更控制原则 （与MEVOPUR母粒类似），降低变更风险 不含动物源性物质和邻苯二甲酸盐 适用于吹膜、注塑、吹塑和挤出 • • • 注册药品主文件（III型） 食品接触符合FDA/EU*要求 法规支持 原材料根据以下法规测试： - ISO 10993-1 - USP第、章，包括VI级别，符合眼 科和鼻腔用药物要求 - 欧洲药典3.1.3/3.1.5（聚烯烃） - 美国药典（聚乙烯） - ICH Q3D 杂质元素 - USP和USP，透光率 • • • 载体材料 耐光性 热稳定性 产品代码颜料含量/类型 HDPE 50% TiO2 8 300°C PH00075525 LLDPE 60% TiO2 8 300°C PL00075542 LLDPE 70% TiO2 8 300°C PL00075545 PP 50% TiO2 8 300°C PP00075717 适用医疗保健使用限制—见下文。

PP BLUE FILTER HMS RECYCLE BLUE PP FR 8-6 LMS-1000

Through our design expertise and material science, we help our customers reduce material usage, enable recycle solutions, improve physical performance and reuse potential of recycled materials. Avient also recently announced a 2030 sustainability goal to reach 100% of our materials for the packaging market to be recyclable or reusable. It is estimated that 9% of the world’s plastic is recycled by end users.

We will strive to minimize our environmental impact and maximize our conservation of the earth’s resources by using energy-efficient technologies, recycling more, reducing waste, continuously improving operating efficiencies and driving operational excellence.

Breakthrough technologies that minimize wastewater and improve the recyclability of materials and packaging across a spectrum of end uses