Get Help Now +1-866-737-2066 With TiO₂ content between 4% and 0%, ColorMatrix™ Lactra™ Four, One and Zero offers light blocking up to 99.9%, improved performance in thin wall sections, superior whiteness, and can be processed with standard PET grades and rPET. TiO₂ content of

December 1, 2023 December 1, 2023 Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

$1.74 $1.93 $2.80 2019PF 2020PF 2021E Adjusted EPS (1) + 61% (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 4 Webcast Details The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media- server.com/mmc/p/eaivs28r. To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 6746706. See Attachment 3 for a definition and summary of special items.

All Rights Reserved 2025 3 Our purpose and strategic framework Copyright © . All Rights Reserved 2025 4 Full-year 2024 organic revenue growth - by region ▲5% ▲1% ▲5% ▲15% Year-over-year revenue growth, excludes the impact of foreign exchange US & Canada Europe, Middle East & Africa Asia Latin America 5Copyright © . All Rights Reserved 2025 22 Avient 2024 regional sales, by end market U S & C AN AD A 41% of sales E M E A 35% of sales AS I A 18% of sales L AT I N AM E R I C A 6% of sales 13% 22% 14% 9% 13% 10% 9% 6% 4% Packaging TelecomEnergyDefenseHealthcareBuilding & construction TransportationIndustrialConsumer 26% 13% 16% 13% 10% 5% 10% 5% 2% 31% 26% 14% 10% 5% 10% 1% 1% 2% 61% 20% 7% 6% 4% 2% Copyright © .

TAHOE PC 3 B-T925-3-4 YELLOW 1

GARNET RED 3 VIBRANT PINK 3 VIBRANT PINK 4

YELLOW TP PET 4 BRONZE TP PET 3 WHITE LM 3

S DM502PCH#3 PEACH #3 S1-290-4 THINNER Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

UV SPLASH BLOCK GREEN 3 SILVER 428C 4 SILVER 428C 3

WHITE 3 NARANJA CARCAL 3 SILVER 4