Sequeira most recently served as CIO for Patrick Industries, a leading component solutions provider for the recreational vehicle, marine, housing and power sports markets. There, he drove a new technology go-to-market strategy that created competitive advantage, including leading the adoption of advanced technologies such as robotics, AI, and cutting-edge cybersecurity tools and frameworks.

MATERIAL LIFECYCLE GLOSSARY OF TERMS Material Manufacturer - Raw material suppliers or processors who produce materials ready for manufacturing Reworkable Material - O� spec or scrap materials that are re-ground or re-worked back into the same supply or manufacturing process that produced them – these are not considered recycled Prime - Materials supplied that meet the required specification, ready for processing/ manufacturing Processor - Manufacturing of products ready for market e.g. molders and extruders Retail/Consumer - End user Reclaimer - Local recycling center for consumer goods Post-Consumer Recycle (PCR) - Materials derived from polymers reclaimed at the end of their lifecycle that have been through waste treatment Scrap Parts & Materials - Waste from the manufacturing process that cannot be reused within the same process or sold to the market Waste Treater - Regional industrial waste reclamation center Post-Industrial Recycle (PIR) - Material derived from scrap reclaimed within the manufacturing process that has been through waste treatment PRIME POST- CONSUMER RECYCLE (PCR) WASTE TREATER POST- INDUSTRIAL RECYCLE (PIR) REWORKABLE MATERIAL RETAIL/ CONSUMER RECLAIMER MATERIAL MANUFACTURER SCRAP PARTS & MATERIALS PROCESSOR

In particular, these include statements relating to future actions; prospective changes in raw material costs, product pricing or product demand; future performance; estimated capital expenditures; results of current and anticipated market conditions and market strategies; sales efforts; expenses; the outcome of contingencies such as legal proceedings and environmental liabilities; and financial results. This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, mark-to-market adjustments associated with benefit plans, environmental remediation costs, acquisition-related costs, and other non-routine costs. Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 8.9 12.0 11.9 10.9 9.9 8.2 16.3 13.8 11.9 9.6 9.5 9.5 9.2 7.7 11 21 O ct 23 PM PP FM C C Avient Historic Multiple Avient Specialty Other Specialty / AP P E N DI X 30 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 BILLION US & Canada 34% 38% END MARKET REGION 33 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 BILLION US & Canada 52% 35% 34 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 35 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.

TECHNICAL EXPERTISE HELPS ELECTRONIC CONNECTOR COMPANY ENTER NEW MARKET © 2021, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about Bergamid™ Nylon Formulations, contact Avient at +1.844.4AVIENT (1.844.428.4368) or visit us at avient.com. Meet targeted cost-performance requirements – The selected resin must offer significant savings over the current LCP/carbon fiber formulation through material and/or manufacturing savings, thus enabling penetration of the low-cost computer market with a competitive connector. Working closely with the manufacturer’s engineers, Avient determined that the material required a special combination of properties: • A heat-resistant base resin that would provide the level of signal dampening prescribed • Mechanical properties that would ensure an effective electrical connection and at the same time allow for snap-fit installation • A cost-effective solution that would enable the manufacturer to compete in this new market Striving for optimal results, the manufacturer evaluated more than 30 different materials.

Cesa™ Unify™ A4R Polyolefin Compatibilizer for Enhanced Recycling RECYCLED MATERIAL IN A CHANGING MARKET Legislation globally is driving change towards increased quantities of post-consumer recycled (PCR) materials, further encouraged by the implementation of usage targets and new tariffs. Both legislation and industry goals have created an increased demand for recycled material across the plastics industry, but especially within the packaging market. This literature shall NOT operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 1.844.4AVIENT www.avient.com KEY CHARACTERISTICS • Designed for polyolefin recycling and to enhance circularity • Helps bring incompatible polymers together by forming them into a homogenous polymer mixture • Improves the mechanical performance of mixed PP/PE streams • Increases impact strength by up to 50% • Increases ductility by up to 100% for improved performance • Maintains mechanical strength properties close to polymer starting point • The end result is that the characteristics of rPP remain with higher impact properties • Good cost-performance ratio • Can be combined with color into a single masterbatch product for convenience • Product guidance and technical assistance is available from our experts MARKETS & APPLICATIONS • Recycled polyolefins • Packaging, consumer & others • High-value polyolefin applications with recycled material content • Virgin polymers which will be recycled after the use phase Currently unavailable in North America—please contact your Avient representative for further information.

THE PATH TO AN OPTIMIZED BOTTLE You invest incredible energy developing and marketing your products. Polymer science, industry-leading expertise with colors and additives, and our in-house color design service make us a powerful collaborator during bottle design, manufacturing, and product marketing. They provide leading-edge insight in polymer science, packaging design and consumer trends while helping you explore innovative colorants and effects that will set you apart in the market

sq. ft.) 0.54" 1.2 0.75" 1.4 2.24" 3.1 CRTM PANEL PROPERTIES Additional features include: • Material and design flexibility • �Large-scale production with in-line CNC machining • Class-A FS&T resin systems • Product design guidance MARKETS AND END-USE APPLICATIONS CRTM composite panels are ideal for use in markets where metal skin-over-frame or hand-laid composite sandwich panels are currently used.

THE IMPACT Gravi-Tech high-density formulations enabled API to design and mold a patented, full-opening flapper valve that is not only unique in the market, but also offers important cost, performance and environmental advantages over brass Thanks to the customized Gravi-Tech material, API was able to successfully design and mold a flapper valve that is the only one of its kind on the market—and offers a less expensive solution than traditional brass valves.

THE IMPACT The new Maxxam REC Recycled Polyolefin formulations from Avient enabled Hager to bring the new cubyko leaf to market quickly, with a first launch in the French market in January 2024.

In addition to an increased speed to market, our custom formulations boost your design flexibility and offer better performance-to-cost ratios as compared to traditionally used materials. Faster Speed-to-Market and Increased Design Flexibility – The sampling and validating of thermoplastic formulations is faster than that of traditionally used materials such as ceramics or printed circuit boards (PCB).