MC-83418PC BLACK MC-83459PC BLACK MC-83507PP BLACK PP

ABS Quality Evaluations This is to certify that the Quality Management System of: Avient Corporation 4921 I D A Park Drive Lockport, NY 14094 U.S.A. IATF 16949:2016 The Quality Management System is applicable to: Certificate No: 58976 Effective Date: 08 February 2019 Expiration Date: 09 August 2022 Revision Date: 17 November 2020 IATF No: 0349837 Dominic Townsend, President DESIGN AND MANUFACTURE OF THERMOPLASTIC COMPOUNDS (WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 2 ABS Quality Evaluations Avient Corporation IATF 16949:2016 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.

Code of Ethics _Sr Financial Officers Revised December 2023 Code of Ethics Applicable to Senior Financial Officers Application and Standards of this Code of Ethics This Code of Ethics applies to Avient’s Chief Executive Officer, Chief Financial Officer, and Corporate Controller. In addition to their responsibilities under this Code of Ethics, these officers must comply with Avient’s Code of Conduct.

In addition, laser absorption levels can be adjusted using our formulation expertise. In addition to PA66, our solutions also can be customized using multiple base resins such as PC and PBT to meet specific customer needs. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Consolidated sales expanded for the first time in seven quarters with contributions from both our Color, Additives and Inks, and Specialty Engineered Materials segments. 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. In addition, operating income before the effect of special items is a component of Avient's annual incentive plans and is used in debt covenant computations.