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XHC-37207-0008A-01-3 X ET-39340-01A1-1 Black X ET-39340-01A1-6 Black

BLACK AO 3 POL3808/1 X-HC-3244911A-MS3 Blue

This document is property of Avient Table of Contents 1.0 Organizational Context ..............................................................................................................................................3 1.1 Purpose ..................................................................................................................................................................3 1.2 Scope ......................................................................................................................................................................3 2.0 Avient Global Quality Policy ......................................................................................................................................4 3.0 Supplier Management ...............................................................................................................................................5 3.1 Supplier Quality Management System..................................................................................................................5 3.2 Performance Evaluation ........................................................................................................................................5 3.3 Supplier On-Site Audit ...........................................................................................................................................5 3.4 Product and Process Changes ................................................................................................................................6 4.0 Supplier Quality Expectations ...................................................................................................................................6 4.1 Raw Material(s), Packaging and Shipping .............................................................................................................6 4.2 Nonconforming Material, Containment, and Supplier Corrective Action............................................................6 4.3 Contingency / Disaster Recovery Plan...................................................................................................................7 4.4 Sub-Tier Supplier Controls .....................................................................................................................................7 5.0 Avient Business Expectations ....................................................................................................................................8 Additional functional area documentation ........................................................................................................................8 6.0 References..................................................................................................................................................................9 7.0 Definitions and Acronyms .........................................................................................................................................9 Document Page 3 of 10 Only the electronic version of this document in ETQ is the controlled version of the document. Document Page 4 of 10 Only the electronic version of this document in ETQ is the controlled version of the document.

AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) N OV E M B E R 2 , 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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.

Scope 3 category 4: Upstream transportation and distribution (7.5.3) Methodological details Emissions associated with transport of raw materials to Avient are included in the emission factors chosen in category 1. Business division Scope 1 emissions (metric ton CO2e) Row 1 Avient Corporate 4275.031 193 Business division Scope 1 emissions (metric ton CO2e) Row 2 Global Color, Additives and Inks 3326.306 Row 3 Global Specialty Engineered Materials 20944.881 Row 4 Masterbatch 4568.055 [Add row] (7.20.1) Break down your total gross global Scope 2 emissions by business division. Further information & sign off (13.1) Indicate if any environmental information included in your CDP response (not already reported in 7.9.1/2/3, 8.9.1/2/3/4, and 9.3.2) is verified and/or assured by a third party?

X 6892#SR-00466-0001-3 Blue 2748C VIOLET CRÈME SAD-1267-1 GREY Q758-1-3

Full year sales grew to $3.24 billion, up 4% organically compared to 2023.

Avient will exhibit at France Innovation Plasturgie from June 4-7, 2024, at booth C55 at the Eurexpo Convention Center in Lyon, France.