GLS™ TPEs with Antimicrobial Technologies Avient Launches GLS™ Thermoplastic Elastomers with Antimicrobial Technology That Protects Against Microbial Growth

Cergy, France 68. Indefinite-lived intangible assets primarily consist of the Dyneema, GLS, ColorMatrix, Gordon Composites, and Fiber-Line trade names. PRINCIPAL ACCOUNTANT FEES AND SERVICES Information regarding fees paid to and services provided by Avient’s independent registered public accounting firm and the pre-approval policies and procedures of the audit committee is incorporated by reference to the information contained in the 2023 Proxy Statement. 68 AVIENT CORPORATION PART IV ITEM 15.

Aland, Finland 68. If, after assessing the totality of events and circumstances, we determine it is more likely than not that the fair value is less than carrying value, a quantitative impairment test is performed for each asset, as described above. 41 AVIENT CORPORATION Indefinite-lived intangible assets primarily consist of the GLS, ColorMatrix, Gordon Composites, and Fiber-Line trade names. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE The information regarding certain relationships and related transactions and director independence is incorporated by reference to the information contained in the 2022 Proxy Statement. 68 AVIENT CORPORATION ITEM 14.

Abernathy 68 2018 Yes M M Richard H. Director since: 2018 Age: 68 Current Public Company Directorships: • Haemonetics Corporation Former Directorships: • Halyard Health, Inc. • RadioShack Corp. • Lubrizol Corp. • Kimberly-Clark de Mexico Richard H. The restricted stock COMPENSATION DISCUSSION AND ANALYSIS 68 PROXY STATEMENT 2023 | Annual Meeting of Shareholders units (“RSUs”) are time-based awards that generally vest in their entirety on the third anniversary of the grant date.

Avient CDP Climate Change Questionnaire 2021 Tuesday, August 3, 2021 68 Change in emissions (metric tons CO2e) Direction of change Emissions value (percentage) Please explain calculation Change in renewable energy consumption 58,405 Decreased 55.1 Taking total emission reductions from Renewable Energy Credits and Gurantees of Origin (58,405 metric tons CO2e) divided by total Scope 1 and Scope 2 emissions (106,003 metric tons CO2e), this results in 55.10% decrease.

NOTICE OF 2017 ANNUALMEETING OF SHAREHOLDERS AND PROXY STATEMENT PolyOne Corporation TABLE OF CONTENTS MESSAGE FROM OUR CEO ............................................................................................................................................................................................i NOTICE OF 2017 ANNUAL MEETING OF SHAREHOLDERS..........................................................................................................................ii PROXY SUMMARY............................................................................................................................................................................................................1 PROXY STATEMENT .......................................................................................................................................................................................................5 PROPOSAL 1— ELECTION OF BOARD OF DIRECTORS .................................................................................................................................6 PROPOSAL 2— ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION .........................................11 PROPOSAL 3— ADVISORY VOTE TO APPROVE THE FREQUENCY OF FUTURE ADVISORY VOTES TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION .....................................................................................................12 PROPOSAL 4— APPROVAL OF THE POLYONE CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN .............................................................................................................................................................................13 PROPOSAL 5— RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM..................................................................................................................................................................................................................30 CORPORATE GOVERNANCE.....................................................................................................................................................................................33 2016 NON-EMPLOYEE DIRECTOR COMPENSATION....................................................................................................................................39 OWNERSHIP OF POLYONE SHARES.....................................................................................................................................................................41 COMPENSATION DISCUSSION AND ANALYSIS ...............................................................................................................................................43 Executive Summary....................................................................................................................................................................................43 Executive Compensation Philosophy and Objectives..................................................................................................................47 What We Pay and Why: Elements of Compensation ..................................................................................................................49 Other Aspects of Our Compensation Programs .............................................................................................................................55 EXECUTIVE COMPENSATION..................................................................................................................................................................................59 2016 Summary Compensation Table .................................................................................................................................................59 2016 Grants of Plan-Based Awards.....................................................................................................................................................62 Outstanding Equity Awards at 2016 Fiscal Year-End.................................................................................................................64 2016 Option Exercises and Stock Vested..........................................................................................................................................67 2016 Pension Benefits...............................................................................................................................................................................67 2016 Nonqualified Deferred Compensation ...................................................................................................................................68 Potential Payments Upon Termination or Change of Control .................................................................................................70 Compensation Committee Interlocks .................................................................................................................................................74 Policy on Related Person Transactions .............................................................................................................................................74 Risk Assessment of the Compensation Programs.........................................................................................................................74 Compensation Committee Report........................................................................................................................................................75 MISCELLANEOUS PROVISIONS...............................................................................................................................................................................76 APPENDIX A...................................................................................................................................................................................................................A-1 APPENDIX B...................................................................................................................................................................................................................B-1 MESSAGE FROM OUR CEO March 31, 2017 Dear Fellow Shareholder: You are cordially invited to attend the PolyOne Corporation Annual Meeting of Shareholders (the “Annual Meeting”), which will be held at 9:00 a.m. on Thursday, May 11, 2017, at PolyOne Corporation’s corporate headquarters located at PolyOne Center, 33587Walker Road, Avon Lake, Ohio 44012. The amounts refleff cted in this column are included in the 2016 Summary Compensation Table of this proxy statement as folff lows: 68 EXECUTIVE COMPENSATION Name 2016 “Salary” Column ($) 2016 “Non-Equity Itt ncentive Plan Compensation” Column ($) R.M.

Indefinite-lived intangible assets primarily consist of the GLS, ColorMatrix and Gordon Composites trade names.

Indefinite-lived intangible assets primarily consist of the GLS, ColorMatrix and Gordon Composites trade names.