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NOTICE OF 2020 ANNUAL MEETING OF SHAREHOLDERS AND PROXY STATEMENT PolyOne Corporation PROPOSAL 1 — ELECTION OF BOARD OF DIRECTORS ............................................................................................................ 11 PROPOSAL 2 — ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION ............................ 16 PROPOSAL 3 — APPROVAL OF THE POLYONE CORPORATION 2020 EQUITY AND INCENTIVE COMPENSATION PLAN .........................................................................................................................................17 PROPOSAL 4 — RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ................................................................................................................................................30 MESSAGE FROM OUR CEO www.virtualshareholdermeeting.com/POL2020 Your vote is very important. Wulfsohn Qualifications, Attributes, Skills and Experience: Current Directorships: Former Directorships: Age: Director since: ADVISORY VOTE PROPOSAL 2 — ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION Objective How Our Executive Compensation Program Achieves this Objective Our Board recommends a vote FOR this Proposal to approve, on an advisory basis, our Named Executive Officer compensation. EQUITY PLAN PROPOSAL 3 — APPROVAL OF THE POLYONE CORPORATION 2020 EQUITY AND INCENTIVE COMPENSATION PLAN General Why We Recommend That You Vote for this Proposaly p EQUITY PLAN EQUITY PLAN Our Board recommends a vote FOR this Proposal to approve the PolyOne Corporation 2020 Equity and Incentive Compensation Plan. 2020 Plan Highlights g g Administration Reasonable 2020 Plan Limits EQUITY PLAN Allowances for Conversion Awards and Assumed Plans Limited Share Recycling Provisions Minimum Vesting No Repricing Without Shareholder Approval Change of Control Definition Exercise or Base Price Limitation.

Thereafter, Buyer automatically approves the invoice. 7. Buyer shall be exclusively responsible for (i) ensuring compliance with all Laws and Standards associated with its intended use of Product; and (ii) obtaining all necessary approvals, permits or clearances for such use. Buyer shall not (re-) export or (re- ) transfer or disclose, directly or indirectly, any of the Products or Items supplied by Seller and/or any Items incorporating or processed from such Products, in breach of any Trade Control Laws, or, in the event an export license or other approval is required from any governmental authority or agency, without first obtaining such license or approval.

Thereafter, Buyer automatically approves the invoice. 7. Buyer shall be exclusively responsible for (i) ensuring compliance with all Laws and Standards associated with its intended use of Product; and (ii) obtaining all necessary approvals, permits or clearances for such use. Buyer shall not (re-) export or (re-) transfer or disclose, directly or indirectly, any of the Products or Items supplied by Seller and/or any Items incorporating or processed from such Products, in breach of any Trade Control laws, or, in the event an export license or other approval is required from any governmental authority or agency, without first obtaining such license or approval.

Thereafter, Buyer automatically approves the invoice. 7. Buyer shall be exclusively responsible for (i) ensuring compliance with all Laws and Standards associated with its intended use of Product; and (ii) obtaining all necessary approvals, permits or clearances for such use. Buyer shall not (re-) export or (re- ) transfer or disclose, directly or indirectly, any of the Products or Items supplied by Seller and/or any Items incorporating or processed from such Products, in breach of any Trade Control laws, or, in the event an export license or other approval is required from any governmental authority or agency, without first obtaining such license or approval.