Complēt™ PKE Formulations Complēt™ PKE formulations are long glass fiber reinforced polyketone solutions for structural applications using metal today. Helping to improve sustainability over the end- product lifecycle, Complēt PKE formulations offer a reduced carbon footprint as a result of the base resin. Values are not to be construed as specifications. ■ Notched 23C ■ Unnotched 23C ■ Unnotched -30C■ Notched -30C 0 5 10 15 20 25 Complēt LGF30-PKE NAT Complēt LGF40-PKE NAT Complēt LGF50-PKE NAT Izod Impact Notched ASTM D256/Unnotched ASTM D4812 4.1 4.7 5.4 18.9 19.5 19.919.1 19.8 20.1 4.0 4.6 5.0 (1) Data based on single lot of lab generated samples.

Annual Report | 2024 2 STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company, LLC 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about Avient, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.avient.com or free of charge from: Investor Relations Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 1-440-930-1000 ANNUAL MEETING The annual meeting of Avient will be held virtually via live webcast at 9:00 a.m. Shareholders will be able to attend and participate in the annual meeting online, vote shares electronically, and submit questions during the annual meeting by visiting www.virtualshareholdermeeting.com/AVNT2025. Further, as a result of Avient's strategic shift to an innovator of materials solutions, it has completed several acquisitions and divestitures which have resulted in a significant amount of intangible asset amortization.

SPORTING GOODS BRAND I N J E C T I O N M O L D E D B A S E B A L L B A T • Meet BBCOR safety standard for coefficient of restitution • High stiffness and toughness to hold up to ball impacts without excessive vibration • Variable feel, sound, and “sweet spot” for user preference • Provided a unique solution allowing the bat to be manufactured with injection molding instead of thermoset layup process to lower production cost • Designed unique two-part barrel and handle construction which enables tailoring weight and balance performance to player Complēt™ Long Carbon Fiber ETPU Composite KEY REQUIREMENTS WHY AVIENT?

Complēt™ LGF Long glass fiber reinforced engineering resins with enhanced mechanical properties that allow for metal replacement. Complēt™ MT Maximum toughness, long fiber reinforced nylons (polyamides) formulated for extra impact and fatigue resistance. Complēt™ REC Long fiber solutions incorporating recycled content.

CRAFTECH® N O N - M E T A L L I C F A S T E N E R S • Corrosion resistance • Electrical isolation • Strength performance similar to competitive products made of metals • Supplied pre-colored long fiber reinforced composites for consistent appearance • Formulated an LFT solution to meet key performance needs and strength to compete against metal alternatives • Delivered custom formulated materials on- time with short lead times and in low release quantities Complēt™ Long Glass Fiber ETPU Composite KEY REQUIREMENTS WHY AVIENT?

OFF-ROAD VEHICLE MANUFACTURER U N I F I E D S E A T I N G S H E L L • Consolidate parts to reduce manufacturing costs • Maintain performance while replacing metal seating frame with lightweight composite material • High durability to withstand harsh usage environments • Delivered long glass fiber reinforced thermoplastic solution providing metal-like performance with excellent toughness • Lowered component costs with single-piece injection molded seat shell • Utilized global capabilities to meet manufacturing supply chain needs Complēt™ Long Glass Fiber PA66 Composite KEY REQUIREMENTS WHY AVIENT?

PERSONAL WATERCRAFT OEM S T E E R I N G C O L U M N • Similar strength performance to existing aluminum assembly • Withstand outdoor UV exposure • Weight reduction for improved performance • Corrosion and moisture resistance • Premium aesthetic • Provided a material that met application load requirements and allowed for part consolidation • Delivered confidence in changing material through design consultation, robust FEA support, and UV customization • Incorporated carbon fiber to support a marketing story Complēt™Hybrid Moisture Resistant Composite KEY REQUIREMENTS WHY AVIENT?

OFF-ROAD VEHICLE MANUFACTURER E N G I N E B R A C K E T • Exceptional structural properties with extremely high stiffness and strength across a broad temperature range (-40 to 160°F) • Excellent creep resistance and fatigue endurance • Lower weight with no reduction in performance • Reduced weight by 40% with zero fatigue failures during extensive field testing • Provided technical support to optimize design for metal-to-composite conversion • Delivered composite solution with similar system cost and more robust performance than failure prone aluminum version Complēt™ Long Carbon Fiber PA66 Composite KEY REQUIREMENTS WHY AVIENT?

PIRANHA M A R I N E P R O P E L L E R • Similar mechanical properties to aluminum and stainless steel • Improved impact resistance, durability, and vibration damping properties • Injection moldable • Enabled up to 20% more impact resistance compared to standard long fiber reinforced materials, including the incumbent material • Improved durability and vibration damping allowing the blades to flex and absorb energy from minor impacts • Facilitated an interchangeable blade system providing a cost- effective solution for repairs and tuning of propulsion thrust to meet a boat’s intended use, for either speed or transporting loads • Enhanced design flexibility allowing for the innovative blade design to provide 400% more reverse thrust than standard propellers and twice as much as competing metal propellers Complēt™ MT Long Glass Fiber Reinforced Nylon 6 KEY REQUIREMENTS WHY AVIENT?

REFORM DESIGN LAB B I O - B A S E D D E S I G N F U R N I T U R E • Matt black color in cellulose fiber filled PLA • 3D-printable material • Possible outdoor use • Fast development to adapt to online requests • Developed custom products that fulfill color, appearance, UV stabilization and material requirements • Provided fast support to answer evolving online demands • Offered small and flexible quantities and suggestions for further colors OnColor™ custom masterbatch and engineered material KEY REQUIREMENTS WHY AVIENT?