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. Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

POPULAR BELT & HOSE REINFORCEMENT PRODUCTS Product ID Coating Base Fiber Nominal Break Strength Nominal Yield Geometry Diameter Notes K1000T FIBER-LINE® 43 LBs (19 KGs)  12987 FT/LB 8725 M/KG Round/Flat .374 mm Twisted Kevlar with heat-activated K2160T 100 LBs (45 KGs) 5847 FT/LB 3928 M/KG Round/Flat .558 mm Twisted Kevlar with heat-activated K1500 1x2x3 400 LBs (180 KGs) 1366 FT/LB 917 M/KG Round 1.22 mm Twisted Kevlar cord with heat-activated V1500 2x3 Vectran 550 LBS (250 KGs) 1373 FT/LB 921 M/KG Round 1.305 mm Twisted Vectran cord with heat-activated LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.

Product ID FIBER-LINE® Coating Base Fiber Nominal Yield Description K9000 FIBER-LINE® Packcoat™ Kevlar® 660 FT/LB (400 M/KG) PFOA Free PTFE & Silicone oil NX8400 FIBER-LINE® Packcoat™ Nomex® 787 FT/LB (527 M/KG) PFOA Free PTFE & Silicone oil C24K14000 FIBER-LINE® Packcoat™ Carbon 383 FT/LB (257 M/KG) PFOA Free PTFE & graphite based lubricant dispersion C6K3600 FIBER-LINE® Packcoat™ Carbon 1675 FT/LB (1125 M/KG) PFOA Free PTFE, silicone oil, & graphite based lubricant dispersion PTFE6959 FIBER-LINE® Packcoat™ PTFE 1277 FT/LB (867 M/KG) PFOA Free PTFE & Silicone oil POPULAR PACKING YARN PRODUCTS LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V.