EST to discuss the key highlights of the expected acquisition of the Dyneema business as well as its first quarter 2022 financial results. 3 Webcast Details Avient will host a webcast on Wednesday, April 20, 2022 at 9:00 a.m. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 5 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

This literature shall NOT operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 1.844.4AVIENT www.avient.com RAL** SAP CODE DESCRIPTION LIGHT RESISTANCE 9010 CC01082068BG 00016 Cromofix White 8 1021 CC10253439BG PF 391-YE-30 FPVC Masterbatch 6 2003 CC10274055BG PF 274055 OR FPVC Masterbatch 5 3000 CC10253376BG PF 3189-RD-30 FPVC Masterbatch 4–5 3015 CC10255901BG PF 2000-PK-30 FPVC Masterbatch 7–8 4005 CC10255898BG PF 255898 PU FPVC Masterbatch 5 5015 CC10253374BG PF 130-BU-30 FPVC Masterbatch 7–8 6018 CC01088641BG 06B010 Cromofix Green 5–6 7001 CC10255354BG PF 255354 GY FPVC Masterbatch 8 8003 CC01088695BG 07B005 Cromofix Brown 6 9005 CC10252184BG PF 2023-BK-30 BK FPVC Masterbatch 8 * Non-ortho-phthalate plasticizers ** Other colors available on request SOLUTIONS AVAILABLE

Attachment 3 Tax adjustments (Attachment 3) Tax adjustments (Attachment 3)

0.12 in/3 mm diameter   Pellets typically 0.12 in/3 mm long 

February 3, 2020 ANAHEIM, Calif. – February 3, 2020 – At Medical Design and Manufacturing (MD&M) West next week, PolyOne is focusing on helping customers solve pressing medical device challenges through a “More Than Materials” approach.

February 3, 2020 ANAHEIM, Calif. – February 3, 2020 – At Medical Design and Manufacturing (MD&M) West next week, PolyOne will launch its newest medical grade, Versaflex™ HC BT218, formulated in response to supply challenges stemming from silicone shortages and sterilization facility closures.

April 3, 2019 MANNHEIM, Germany – April 3, 2019 – PolyOne will display its colorant and additive solutions for the automotive industry at this week’s Plastics in Automotive Engineering (PIAE) Conference in Mannheim, Germany.

April 3, 2019 MANNHEIM, Germany – April 3, 2019 – This week at the Plastics in Automotive Engineering (PIAE) congress, PolyOne is presenting its deep portfolio of advanced polymers, colorants, and additives that help automotive manufacturers keep pace with changes in technology and consumer demand.

The MPS incorporates Avient’s custom-formulated GlasArmor ballistic panels that meet Level 3 protection under Underwriters Laboratories (UL) 752 standards for ballistic resistance. Level 3 ensures protection against a .44 magnum lead semi-wadcutter gas-checked projectile.

The MPS incorporates Avient’s custom-formulated GlasArmor ballistic panels that meet Level 3 protection under Underwriters Laboratories (UL) 752 standards for ballistic resistance. Level 3 ensures protection against a .44 magnum lead semi-wadcutter gas-checked projectile.