A-1 i MESSAGE FROM OUR CEO April 1, 2016 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 12, 2016, at PolyOne Corporation’s corporate headquarters located at PolyOne Center, 33587 Walker Road, Avon Lake, Ohio 44012. ii NOTICE OF 2016 ANNUAL MEETING OF SHAREHOLDERS Thursday, May 12, 2016 9:00 a.m. For information on the terms and conditions of these incentive plans, see the “What We Pay and Why: Elements of Compensation” section of this proxy statement (beginning on Page 32). 5 PROXY STATEMENT POLYONE CORPORATION PolyOne Center 33587 Walker Road Avon Lake, Ohio 44012 PROXY STATEMENT Dated April 1, 2016 Our Board respectfully requests your proxy for use at the Annual Meeting to be held at PolyOne’s corporate headquarters located at PolyOne Center, 33587 Walker Road, Avon Lake, Ohio 44012 at 9:00 a.m. on Thursday, May 12, 2016, and at any adjournments of that meeting.

8:00 a.m.

8:00 a.m.

8:00 a.m.

8:00 a.m.

Versaflex™ Thermoplastic Elastomers Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance

i NOTICE OF 2023 ANNUAL MEETING OF SHAREHOLDERS Thursday, May 11, 2023 9:00 a.m. Please carefully review the proxy materials for the Annual Meeting, which will be held virtually via live webcast on Thursday, May 11, 2023 at 9:00 a.m. The Annual Meeting webcast will begin promptly at 9:00 a.m.

Versaflex™ Thermoplastic Elastomers Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance

hotels, off-shore installations, trains, and ships).

NOTICE OF 2017 ANNUALMEETING OF SHAREHOLDERS AND PROXY STATEMENT 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. NOTICE OF 2017 ANNUAL MEETING OF SHAREHOLDERS Thursday, May 11, 2017 9:00 a.m. For inforff mation on the terms and conditions of these incentive programs, see the “What We Pay and Why: Elements of Compensation” section of this proxy statement. 4 POLYONE CORPORATRR ION PolyOne Center 33587Walker Road Avon Lake, Ohio 44012 DatedMarch 31, 2017 Our Board respectfully requests your proxy for use at the Annual Meeting to be held at PolyOne’s corporate headquarters located at PolyOne Center, 33587 Walker Road, Avon Lake, Ohio 44012 at 9:00 a.m. on Thursday, May 11, 2017, and at any adjournments of that meeting.