February 24, 2025 Avient will showcase its broad portfolio of advanced composites and engineered fiber solutions, including its new Hammerhead™ FR Flame-Retardant Thermoplastic Composite Panels, at JEC World 2025 in Paris from March 4 to 6.  Avient will exhibit at JEC World in Paris, France, March 4-6, 2025, in Hall 5, Booth F49, at the Paris Nord Villepinte Exhibition Park.

September 19, 2022 May 14, 2025 May 14, 2025

April 19, 2021 May 14, 2025 May 14, 2025

The internal structural components that keep trucking and transportation running must stand up to the worst the road can dish out. Caps and Closures

Nov 19, 2013 3:00 PM EST May 06, 2025 Feb 13, 2025

This is to certify that the Quality Management System of: Avient Corporation - HQ 33587 Walker Road The Quality Management System is applicable to: Certificate No: 31307 Certification Date: 12 October 1995 Effective Date: 20 September 2023 Expiration Date: 07 October 2025 Revision Date: 20 September 2023 Dominic Townsend, President MANUFACTURE AND SUPPLY OF PLASTIC COMPOUNDS, COLOR AND PERFORMANCE ADDITIVES, ENGINEERED THERMOPLASTICS, VINYL RESINS, CUSTOM MIXED PLASTIC MATERIALS, CUSTOM AND COMMODITY COLORANTS FOR PLASTICS, POLYURETHANE SYSTEMS, AND PLASTICIZERS WITH DESIGN AND SAMPLING SUPPORT AT SUWANEE, GA, AND PURCHASING, CUSTOMER SERVICE, LOGISTICS, QUALITY, DESIGN AND SAMPLING SUPPORT AT AVIENT CORPORATE HEADQUARTERS AT AVON LAKE, OH, AND DISTRIBUTION OF RESINS This certificate may be found on the ABS QE Website (www.abs-qe.com). Activity: Develop and manufacture silicone colorants, additives, and compounds Facility: Avient Corporation - Avon Lake, OH 33587 Walker Road Facility: Avient Corporation - Avon Lake, OH (SEM) 554 Moore Road Activity: Management of QMS. Purchasing, Customer Service, Logistics, Quality, Design and Sampling; Corporate HQ, Management of QMS Activity: Manufacture of Engineered Thermoplastics Page 3 of 7 Facility: Avient Corporation - Massillon, OH 1675 Navarre Road Massillon, OH 44646 833 Ridgeview Drive Activity: Manufacture of Color and Performance Additives Activity: Design, Manufacture and Distribution of Thermoplastic Elastomer 831 Ridgeview Drive 921 Ridgeview Drive Activity: Design, Manufacture and Distribution of Thermoplastic Elastomer Activity: Design, Manufacture and Distribution of Thermoplastic Elastomer Facility: Avient Corporation - Lehigh Valley, PA 2513 Highland Avenue Bethlehem, PA 18017 Facility: Avient Corporation - Lockport, NY 4921 I D A Drive Lockport, NY 14094 Activity: Manufacture of Colorants for Plastics Activity: Manufacture of thermoplastic compounds Page 4 of 7 Facility: Avient Corporation- Suwanee, GA 2900 Shawnee Industrial Way Suwanee, GA 30024 Facility: Avient Corporation - Toluca, Mexico AV.

Q1 2025 highlights Q1 2025 results Q1 2025 VS. EPS of $0.76 in line with guidance Copyright © . 2025 4 Q1 2025 organic revenue growth - by region (3%) +2% +9% +17% Year-over-year revenue growth, excludes the impact of foreign exchange US & Canada Europe, Middle East & Africa Asia Latin America 5Copyright © . EBITDA - full year 2025 $540 to 570M +4% to +10% growth excluding FX ADJ.

May 14, 2025 May 14, 2025 May 06, 2025

All Rights Reserved 2025 Q1 2025 highlights Q1 2025 results Q1 2025 VS. All Rights Reserved 2025 19 Specialty Engineered Materials – Q1 2025 performance Sales 314 308 Q1 2024 Q1 2025 Flat EXCL. EBITDA - full year 2025 $540 to 570M +4% to +10% growth excluding FX ADJ.