OUR DIRECTOR NOMINEES AND COMMITTEE MEMBERSHIP You are being asked to vote on the election of twelve Director nominees. All Directors stand for election annually PROXY STATEMENT 2024 | Annual Meeting of Shareholders 15 PROPOSAL 1 — ELECTION OF TWELVE DIRECTOR NOMINEES TO OUR BOARD OF DIRECTORS Our Board currently consists of 12 Directors.

120,000 BOARD MEMBER, MANAGING DIRECTOR 660613-3954 Nilsson, Bo Patrik Joakim, Hovslagaregatan 13, 271 57 YSTAD BOARD MEMBER, CHAIR OF THE BOARD 640503 Merklein, Norbert, Fichtenstrasse 20, 61476 KRONBERG IM TAUNUS, TYSKLAND BOARD MEMBERS 750618-4089 Norén, Jenny Eva Kristina, Fårabäcksvägen 68, 212 91 MALMÖ 610322 Smeds, Jan-Håkan, Chämiweg 23, NEFTENBACH, TYSKLAND AUDITORS 556029-6740 Öhrlings PricewaterhouseCoopers AB, Box 4009, 203 11 MALMÖ Represented by: 710921-4689 PRINCIPALLY RESPONSIBLE AUDITOR 710921-4689 Olsson, Karin Maria, c/o PwC, 405 32 GÖTEBORG SIGNATORY POWER e-Certificate of registration Swedish Companies Registration Office LIMITED COMPANY D1a- 6064988 Registration number Date of registration of the company Document created on Date of registration of current name Page 556393-1020 1990-04-10 2020-11-30 14:53 2020-11-30 2 (2) The board of directors is entitled to sign. Signatory power by any two jointly of the board members Furthermore, the Managing Director, in the course of normal business activities, is also entitled to sign.

Election of twelve director nominees to our Board of Directors Vote FOR Each Nominee     2. PROXY STATEMENT 2025 | Annual Meeting of Shareholders 9 PROPOSAL 1—Election of Twelve Director Nominees to Our Board of Directors Our Board currently consists of 12 Directors. Non-Employee Director Comp 12.

PROPOSAL 1 — ELECTION OF BOARD OF DIRECTORS Our Board currently consists of 11 Directors. Lead Director Our independent Directors meet regularly in executive sessions. The Lead Director acts as the key liaison between the independent Directors and Mr.

ELECTION OF BOARD OF DIRECTORS 6 PROPOSAL 1 — ELECTION OF BOARD OF DIRECTORS Our Board currently consists of 11 Directors. Fearon Age: 60 Director Since: 2004 Lead Director of our Board since May 14, 2015. Lead Director Our independent Directors meet regularly in executive sessions.

The Committee shall consist of a minimum of three directors. Non-employee Director Compensation Non-employee Director Compensation.

AVIENT CORPORATION COMPENSATION COMMITTEE CHARTER Membership • The Compensation Committee (“Committee) of the Board of Directors (“Board”) of Avient Corporation (“Company”) shall consist of a minimum of three directors. • The Committee will consist entirely of directors who the Board has determined have no material relationships with the Company, either directly or as a partner, shareholder, or officer of an organization that has a relationship with the Company, and: o who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange; and o qualify as “non-employee directors” for the purposes of Rule 16b-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). • Each Committee member will serve at the pleasure of the Board for such term as the Board may decide or until such Committee member is no longer a Board member. 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.

Johnson previously served as director of strategic tax planning, leader of the Intellectual Property Program, and director of transfer pricing at Illinois Tool Works Inc., a Fortune 200 global diversified, industrial manufacturer.

Gajewski joined Avient in July 2013 from AkzoNobel/PPG and has since taken on multiple roles with increasing responsibility within the Human Resources function, including HR Director for Avient’s Color, Additives & Inks business segment, and an international assignment with responsibility for the EMEA and India regions. Gajewski led Avient’s learning and organizational development programs, talent management and acquisition, as well as working as the HR Director for all global Corporate Functions.

Gajewski joined Avient in July 2013 from AkzoNobel/PPG and has since taken on multiple roles with increasing responsibility within the Human Resources function, including HR Director for Avient’s Color, Additives & Inks business segment, and an international assignment with responsibility for the EMEA and India regions. Gajewski led Avient’s learning and organizational development programs, talent management and acquisition, as well as working as the HR Director for all global Corporate Functions.