CORE™ Vinyl Powder - Product Bulletin CORE™ Vinyl Powder Coatings are dry blends of suspension PVC resins that are plasticized for flexibility

Annual Repor t | 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. FINANCIAL INFORMATION Security analysts and representatives of financial institutions are invited to contact: Joe Di Salvo Vice President, Treasurer and Investor Relations Phone: 1-440-930-1921 Email: giuseppe.disalvo@avient.com AUDITORS Ernst & Young LLP Nor th Point Tower II, Suite 1800 1001 Lakeside Ave Cleveland, OH 44114 INTERNET ACCESS Information on Avient’s products and services, news releases, corporate governance, EDGAR filings, Repor ts on Forms 10-K and 10-Q, etc. as well as an electronic version of this annual repor t, are available on the Internet at www.avient.com.

Maintaining color consistency across multiple resins sourced from different suppliers in countries around the world is a complex task that requires color-management knowledge and global resources. To learn more about how these services can add value to your next project, contact:

OnForce™ Long Glass Fiber Nylon Composite provided a corrosion-resistant, long glass fiber-reinforced material for cleaner connector Complēt™ MT Long Glass Fiber Blower Vacuum Complēt™ MT Long Glass Fiber Reinforced Piranha Propeller

OnForce™ Long Glass Fiber Nylon Composite provided a corrosion-resistant, long glass fiber-reinforced material for cleaner connector Complēt™ MT Long Glass Fiber Blower Vacuum Complēt™ MT Long Glass Fiber Reinforced Piranha Propeller

OnForce™ Long Glass Fiber Nylon Composite provided a corrosion-resistant, long glass fiber-reinforced material for cleaner connector Complēt™ MT Long Glass Fiber Blower Vacuum Complēt™ MT Long Glass Fiber Reinforced Piranha Propeller

OnForce™ Long Glass Fiber Nylon Composite provided a corrosion-resistant, long glass fiber-reinforced material for cleaner connector Complēt™ MT Long Glass Fiber Blower Vacuum Complēt™ MT Long Glass Fiber Reinforced Piranha Propeller

OnForce™ Long Glass Fiber Nylon Composite provided a corrosion-resistant, long glass fiber-reinforced material for cleaner connector Complēt™ MT Long Glass Fiber Blower Vacuum Complēt™ MT Long Glass Fiber Reinforced Piranha Propeller

FILM MANUFACTURER B L O W N F I L M • Maintain comparable performance to PFAS additives • Meet regulatory compliance • Eliminate melt fracture and reduce die buildup • Increase productivity by reducing product changeover time • Provided a non-PFAS formulation that met all performance and regulatory requirements and did not interact with other additives • Helped eliminate melt fracture with a quick time to clear of under forty minutes • Delivered technical support, including comprehensive testing on various chemistries and polymers • Attained high throughput with a minimal amount of additive Cesa™ Non-PFAS Process Aid for Extrusion KEY REQUIREMENTS WHY AVIENT?

Under the terms of the fourth amended senior secured term loan, the margin was reduced by an additional 25 basis points to 200 basis points. Under the terms of the fourth amended senior secured term loan, the margin was reduced by an additional 25 basis points to 200 basis points. FINANCIAL INFORMATION Security analysts and representatives of financial institutions are invited to contact: Eric R.