We are reviewing, with a target to implement for 2024, appropriate KPI’s for Avient’s global approach for supply chain due diligence. In order to improve our internal processes and bring ColorMatrix in line to the global Avient system a more effective working process for identifying risk and measuring progress through KPI’s is targeted to be implemented through 2024, which will allow us to improve the mitigation and monitoring of risk across our suppliers. Zach Crawford On behalf of the Board of Directors for ColorMatrix Europe Limited Signature: Date: 6th June 2024

Second quarter 2024 adjusted EPS was $0.76 compared to $0.63 in the prior year. Webcast Details Avient will provide additional details on its 2024 second quarter and 2024 full-year outlook during its webcast scheduled for 8:00 a.m. Eastern Time on August 6, 2024.

POLYONE FRANCE TOSSIAT 43, PLACE DE LA GARE 01250 TOSSIAT FRANCE Bureau Veritas Certification France certify that the Management System of the above organization has been audited and found to be in accordance with the requirements of the management system standard detailed below: Standard ISO 14001:2015 Scope of certification THE DESIGN AND MANUFACTURE OF COLOUR AND ADDITIVE CONCENTRATES FOR THERMOPLASTICS Certification/Recertification Cycle Start Date: 03 May 2023 Subject to the continued satisfactory operation of the organization’s Management System, this certificate expires on: 02 May 2026 Expiry date of previous cycle: NA Certification/Recertification Audit date: 08 March 2023 Original Cycle Start Date: 15 July 2011 Certificate n°: FR081968-1 File n°:15608678 Revision date:24 April 2023 Laurent CROGUENNEC - President Local Office: Bureau Veritas Certification France Le Triangle de l'Arche - 9 Cours du Triangle - 92937 Paris La Défense Further clarifications regarding the scope of this certificate the applicability of the management system requirements may be obtained by consulting the organization.

Sanders joined Avient in April 2024 and has responsibility for all legal functions, including contracts and transactions, M&A, compliance, labor relations, digital information, privacy, and intellectual property.

LU-9638 Pommerloch, route de Bastogne 19. Kronimus Holger Hans (mother's birth name: Petra Breidt) DE-76571 Gaggenau, Adolf Dambac-Strasse 2. Palm Christoph (mother's birth name: Maria Lausberg) LU-9638 Pommerloch, route de Bastogne 19.

The Chin Bee facility is the first Avient site in Asia and the sixth site globally to achieve this certification, including the Malmö (Sweden) and Saint Ouen L’Aumône (France) facilities, which were accredited in 2024.

2024 HS UV BLACK 28-3

BROWN SEPT 2024

KELLY GREEN APRIL 2024

99150CBA PLAST-O-CELL 110-L(5)-DINP CODE: 2024