& Canada 64% Specialty Engineered Materials Color Additives and Inks 41% 23% 19% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O CTO BE R 3 1 , 2024 W EB CAS T P RE SE N TATI O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj.

GRAY RING HC DK VIOLET PEARL HDPE OUTER

BLITZ GRAY ABS V2 GREEN HDPE 1%

HDPE BASO4 S17-WH Resin LC SPD CAT GRAY

COOL GRAY 6 PRECOLOR CORAL 179C HDPE

SAFETY YELLOW HDPE GRAY TPE

STAN-TONE HCC-34441 CBP #386 OYSTER GRAY ORANGE HDPE

NIR BLACK HDPE V2 WARM GRAY 10C

HDPE WHITE V3 SLATE GRAY ABS

GREY HDPE ABS GRAY-F 429C