ANNUAL REPORT Innovator of Materials Solutions20 24 In this annual report, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. The meeting notice and proxy materials were made available to shareholders with this annual report. Committees: 1, 2 A V IE N T C O R P O R A T IO N A N N U A L R E P O R T 2 0 2 4 2024 ANNUAL REPORT Innovator of Materials Solutions AVIENT.COM

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NYSE: POL) today reported its full year and fourth quarter results for 2019. of annual revenue, and with run rate synergies will add In addition, operating income before the effect of special items is a component of PolyOne annual and long-term employee incentive plans and is used in debt covenant computations.

Each committee meets periodically throughout the year, reports its actions and recommendations to the Board, receives reports from senior management, annually evaluates its performance and has the authority to retain outside advisors in its discretion. Delinquent Section 16(a) Reports. Requests for copies of such Annual Report on Form 10-K should be directed to: Avient Corporation, 33587 Walker Road, Avon Lake, Ohio 44012, Attention: Secretary.

Orangeville Compound (Update 1) Report Preview National Pollutant Release Inventory (NPRI) and Partners Home Submission Management Help My Profile:Brian Greer Logout Ec.gc.ca Report Preview Report Details Company and Facility Details Permits Contacts Details Report Year 2016 Report Type: NPRI Report Status: Update 1 ­ Submitted Modified Date/Time: 13/03/2018 2:04 PM Report Update Comments: As per email from NPRI QC team Feb 13, 2018 Company Name: Polyone Canada Inc. Note: Only the person identified as the Certifying Official or the authorized delegate should submit the report(s) identified below. Certifying Official (or authorized delegate) Najat Kamal Report Submitted by Brian Greer I, the Certifying Official or authorized delegate, agree with the statements above and acknowledge that by pressing the "Submit Report(s)" button, I am electronically certifying and submitting the facility report(s) for the identified company to its affiliated programs.

All members of the Audit Committee concur with this report. Each committee meets periodically throughout the year, reports its actions and recommendations to the Board, receives reports from senior management, annually evaluates its performance and has the authority to retain outside advisors in its discretion. Requests for copies of such Annual Report on Form 10-K should be directed to: Avient Center, 33587 Walker Road, Avon Lake, Ohio 44012, Attention: Secretary.

• Review and approve a peer group of companies to be used for marketplace trend analysis and to assess the competitiveness of the Company’s total compensation opportunities for executive officers. 2 • Review and approve corporate goals and objectives relevant to the Chief Executive Officer’s compensation; in conjunction with the evaluation conducted by the Board (including as described in the Company’s Corporate Governance Guidelines), evaluate the Chief Executive Officer’s performance annually in light of these goals and objectives; and determine and recommend to the independent members of the Board for their determination and approval the Chief Executive Officer’s compensation level based on this evaluation and considering comparable market data provided by an independent compensation consultant. • In determining the long-term incentive component of the Chief Executive Officer’s compensation, consider the Company’s performance and relative shareholder return, the value of similar incentive awards to chief executive officers at comparable companies, and the awards given to the Chief Executive Officer in the past. • Review and approve the compensation of other executive officers of the Company, including benefits and perquisites, taking into consideration the Company’s performance, comparable market data, the performance of each executive officer, and such other factors as may, in the Committee’s discretion, be appropriate. • In evaluating and making recommendations regarding, or determining and approving, executive officer compensation, the Committee shall consider the results of the most recent shareholder advisory vote on executive compensation (“Say on Pay Vote”) required by Section 14A of the Exchange Act. • Make recommendations to the Board with respect to the approval of incentive compensation plans for executive officers and all equity-based plans. • For annual (or other short term) incentive plans: o Review and approve annual incentive plans (including performance criteria, target awards, payout criteria and similar award design items applicable under such plans) that are applicable to executive officers and any Company officers reporting directly to the Chief Executive Officer. o Review and approve attainment levels and payments to executive officers and any other Company officers reporting directly to the Chief Executive Officer. • For long-term and equity-based incentive plans: o Review and approve the performance criteria, target awards, payout criteria and similar award design items for recipients of grants and awards under the plans. o Review and approve grants, awards, and attainment levels, including equity-based grants, to recipients of grants and awards under such plans. o Review and approve payments for performance-based grants and awards to executive officers and any other Company officers reporting directly to the Chief Executive Officer, as applicable, under such plans. • Administer the Company’s equity-based incentive compensation plans and other plans adopted by the Board that contemplate administration by the Committee. • Review and approve the terms of all employment agreements, executive severance plan and agreements, management continuity agreements and change in control agreements for elected officers. • Approve the adoption and amendment of Company stock ownership guidelines and annually review compliance with these guidelines. 3 Non-employee Director Compensation. • Review the compensation of non-employee directors and make recommendations to the Board regarding changes to existing compensation levels. • Review and recommend to the Board for its approval equity-based grants and awards to non- employee directors under the Company’s equity-based plans and annually review compliance with Company stock ownership guidelines. Evaluation of the Chief Executive Officer. • Develop and maintain a process to enable the Board to evaluate the performance of the Chief Executive Officer on an annual basis and timely communicate the results of any such evaluation to the Chief Executive Officer. Review and Discuss the CD&A; Compensation Committee Report. • With the assistance of management and any outside advisers the Committee deems appropriate (a) review and discuss with management the Company’s disclosures in the CD&A, and, based on this review, make a recommendation as to whether to include it in the Company’s annual report on Form 10-K and proxy statement relating to the Company’s annual meeting of shareholders, and (b) prepare a Compensation Committee Report for inclusion in the Company’s proxy statement or other applicable SEC filings. 4 Board Reports and Annual Evaluation. • Regularly report the Committee’s activities and any recommendations to the Board in such manner and at such times as the Committee or the Board deems appropriate. • Conduct an annual evaluation of the Committee’s performance.

PROXY SUMMARY More commentary on our work in culture and sustainability can be found in the Letter to Shareholders in the 2017 Annual Report. Each committee meets periodically throughout the year, reports its actions and recommendations to the Board, receives reports from senior management, annually evaluates its performance and has the authority to retain outside advisors in its discretion. Requests for copies of such Annual Report on Form 10-K or for information on how to obtain directions to be able to attend the Annual Meeting and vote in person should be directed to: PolyOne Center, 33587 Walker Road, Avon Lake, Ohio 44012, Attention: Secretary.

Audit services include the annual audit of the consolidated financial statements, the audit of internal controls over financial reporting, the reviews of our quarterly reports on Form 10-Q, the issuance of comfort letters and consents, review of registration statements filed with the SEC, accounting and financial reporting consultations and international statutory audits. Each committee meets periodically throughout the year, reports its actions and recommendations to the Board, receives reports from senior management, annually evaluates its performance and has the authority to retain outside advisors in its discretion. These payments, which were made under the Annual Plan, are reported in column (g) “Non-Equity Incentive Plan Compensation”.

NOTICE OF 2019 ANNUAL MEETING OF SHAREHOLDERS Thursday, May 16, 2019 9:00 a.m. Kunkle Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be held on May 16, 2019: The proxy statement, proxy card and annual report to shareholders for the fiscal year ended December 31, 2018 are available at our Internet website, www.polyone.com, on the “Investor Relations” page. Requests for copies of such Annual Report on Form 10-K or for information on how to obtain directions to be able to attend the Annual Meeting and vote in person should be directed to: PolyOne Center, 33587 Walker Road, Avon Lake, Ohio 44012, Attention: Secretary.