Contact Avient for more information. FASTENER SELECTION Copyright © 2020, Avient Corporation. To learn more about Avient’s advanced composite solutions, contact Avient at +1.844.4AVIENT www.avient.com

Lin currently serves on the Boards of Directors of WESCO International, Inc., American Electric Power Company, Inc. and Interface Biologics Inc. Code of Ethics, Code of Conduct and Corporate Governance Guidelines In accordance with applicable NYSE listing standards and Securities and Exchange (“SEC”) regulations, the Board has adopted a Code of Ethics, Code of Conduct and Corporate Governance Guidelines. Preete C Chair of the Committee The Board and each Committee also conduct an annual self-evaluation and each Board member completes an assessment of his or her peers.

Our in-house innovation pipeline remains robust, as we leverage our formulation expertise and sustainable solutions portfolio. Independent Registered Public Accountant Services and Related Fee Arrangements AUDIT Report of the Audit Committee AUDIT The Audit Committee of the Board of Directors CORPORATE GOVERNANCE CORPORATE GOVERNANCE Director Independence Lead Director CORPORATE GOVERNANCE Board Leadership Structure Board’s Oversight of Risk Code of Ethics, Code of Conduct and Corporate Governance Guidelines CORPORATE GOVERNANCE Related Person Transactions Communication with Board Board and Committees Board Attendance CORPORATE GOVERNANCE Board Committees AAudit Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2019: 8 COMMITTEE MEMBERS: Compensation Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2019: 5 COMMITTEE MEMBERS: CORPORATE GOVERNANCE Governance and Corporate Responsibility Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2019: 2 COMMITTEE MEMBERS: CORPORATE GOVERNANCE Environmental, Health and Safety Committee – Primary Responsibilities and Requirements NUMBER OF MEETINGS IN 2019: 2 COMMITTEE MEMBERS: Board Refreshment and Diversity 0% 20% 40% 60% 80% 100% 5 or fewer 6 to 10 More than 10 Years of Service CORPORATE GOVERNANCE 3 of 10 Director nominees Diversity NON-EMPLOYEE DIRECTOR COMPENSATION 2019 NON-EMPLOYEE DIRECTOR COMPENSATION Non-Employee Director Compensation Highlights Non-Employee Director Retainer and Meeting Fees Role Annual Cash Retainers NON-EMPLOYEE DIRECTOR COMPENSATION 2019 Director Compensation Table Name Fees Earned or Paid in Cash (a) ($) Stock Awards (b) ($) Total (c) ($) (1) Fees Earned or Paid in Cash (column (a)) Stock Awards (column (b)) Option Awards Outstanding and Fully-Vested Deferred Shares Name Number of Deferred Shares(1) (#) OWNERSHIP OF POLYONE SHARES OWNERSHIP OF POLYONE SHARES Beneficial Ownership of Our Common Shares Name Number of Shares Owned(1) Right to Acquire Shares Total Beneficial Ownership % of Class(4) OWNERSHIP OF POLYONE SHARES Name and Address Number of Common Shares % of Class Stock Ownership Guidelines for Non-Employee Directors Delinquent Section 16(a) Reports COMPENSATION DISCUSSION AND ANALYSIS COMPENSATION DISCUSSION AND ANALYSIS Executive Summary Name Title How Pay is Tied to Company Performance.

If Buyer resells the Products, Buyer agrees to the Terms and Conditions Regarding Buyer Resale of Avient Products located at www.avient.com/terms. The arbitration will be conducted by 3 (three) arbitrators in accordance with the applicable rules of BANI ("BANI Rules") applicable at the time of dispute. The proceedings shall be conducted in the English language.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. In addition, it has been just over a year since we acquired Clariant Masterbatch and we became Avient. About Avient Avient Corporation (NYSE: AVNT), with expected 2021 revenues of $4.6 to $4.7 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. 1 Mr. About Avient Avient Corporation (NYSE: AVNT), with 2020 pro forma revenues of $3.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com 5 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended December 31, Year Ended December 31, 2020 2019 2020 2019 Sales $ 997.0 $ 658.6 $ 3,242.1 $ 2,862.7 Operating Income 65.0 20.5 189.3 156.8 Net income from continuing operations attributable to Avient shareholders 74.2 6.4 132.0 75.5 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.81 $ 0.08 $ 1.47 $ 0.98 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.81 $ 0.08 $ 1.46 $ 0.97 Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. Webcast Details Avient will host a webcast on Tuesday, May 7, 2024 at 8:00 a.m. To access Avient’s news library online, please visit www.avient.com/news-events.