Hohenrhein 1 No:6/1 No: 149/1

Attachment 1 Special items (1) 1)

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) A vi en t K W R FU L P P G A V Y R P M FM C C E E C L A S H H X L H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of 2023年12月29日 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57.

PROGRAM BULLETIN HOW AVIENT CAN HELP SUPPLY CHAIN INTEGRITY The supply for PVC dispersion resin can be volatile. Because these vinyl materials are a core competency of Avient, we have strong relationships virtually assuring an uninterrupted supply of dispersion resin. Thanks to our strong supplier relationships, we are typically aware of these changes ahead of time and often will have an alternative formulated before discontinuation affects the supply chain.

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens

Office Supplies Pet Care & Supplies Auto-injectors and Drug Delivery Pens