Englewood, Colorado 3. Montrose, Colorado 4. Through Avient Academy, associates can participate in classroom, online, and webinar based training sessions.

Complēt™ REC Long Fiber Reinforced Composites Incorporating Recycled Resin The Complēt™ REC portfolio consists of long fiber reinforced composites incorporating post-consumer recycled (PCR) nylon 6 resin, post-industrial recycled (PIR) nylon 66 resin, and PIR thermoplastic polyurethane (TPU) resin. COMPLĒT REC PIR NYLON 66 COMPARISON Complēt REC PIR PA66 materials are available in black or natural. COMPLĒT REC PCR NYLON 6 COMPARISON Complēt REC PCR PA6 materials are available in black.

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. ■ 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.

We partnered with EcoVadis and IntegrityNext in order to complete these assessments. In 2022, Avient also completed a Climate Change Scenario analysis. To date we have completed over 2,000 product carbon footprint calculations.

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.

Consequently, you should not consider any such list to be a complete set of all potential risks or uncertainties. Online access will begin at 8:45 a.m. Voting electronically online during the Annual Meeting will replace any previous votes.

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.

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?

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?