The following relationships will not be considered to be material relationships that would impair a director’s independence: (i) If the director is, or has an immediate family member who is, a partner (general or limited) in, or a controlling stockholder, equity holder, executive officer, other employee, or director of, any organization to which the Company made, or from which the Company received, payments for property or services in the current or any of the past three fiscal years where the amount involved in such transaction in any such fiscal year was less than the greater of $1 million or 2% of the organization’s consolidated gross revenues for that year; (ii) If the director is, or has an immediate family member who is, a director or trustee of any organization to which the Company has made, or from which the Company has received payments for property or services, and the director (or his/her immediate family member) was not involved in the negotiations of the terms of the transaction, did not, to the extent applicable, provide any services directly to the Company, and did not receive any special benefits as a result of the transaction; or (iii) If the director, or an immediate family member of the director, serves as an officer, director or trustee of a foundation, university, charitable or other not-for-profit organization, and the Company’s discretionary charitable contributions to the organization, in the aggregate are less than the greater of $1 million or 2% of that organization’s latest publicly available annual consolidated gross revenues. The Board has delegated specific risk oversight responsibility to the committees of the Board as follows: (i) the Audit Committee oversees risks related to the Company’s financial statements, financial reporting processes, internal controls, information technology, and cybersecurity; (ii) the Compensation Committee oversees risks related to the Company’s compensation programs; (iii) the Governance and Corporate Responsibility Committee oversees risks related to the Company’s programs, policies, and practices related to certain sustainability and governance matters, including a review of the Company’s Sustainability Report; and (iv) the Environmental, Health and Safety Committee oversees risks related to safety, health, physical security, environmental, and product stewardship matters.

Markets include Tools & Hardware (handles, battery enclosures), Sports & Fitness (protective guards, athletic equipment components), Transportation (automotive structural brackets), Recreational Vehicles (seating components) and Industrial (material handling structures).

Aqueous Battery Gasket

Industrial pipes, tubing and fluid management; electrical battery components; under-the-hood fuel or chemical contact components; and non-structural components

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 4 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 5 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS.

ii) Subject to the share counting rules set forth in Section 3(b) of this Plan, the aggregate number of Common Shares available under Section 3(a)(i) of this Plan will be reduced by one Common Share for every one Common Share subject to an award granted under this Plan. h) Option Rights granted under this Plan may be (i) options, including Incentive Stock Options, that are intended to qualify under particular provisions of the Code, (ii) options that are not intended to so qualify, or (iii) combinations of the foregoing. ii) Each grant may specify that the amount payable on exercise of an Appreciation Right may not exceed a maximum specified by the Compensation Committee on the Date of Grant.

ii This summary does not contain all of the inforff mation that you should consider, and you should read the entire proxy statement carefulff ly before voting. ii) The aggregate number of Common Shares available under Section 3(a)(i) of this Plan will be reduced by one Common Share for every one Common Share subject to an award granted under this Plan. ii) In no event will any Participant in any calendar year be granted Qualified Perforff mance-Based Awards of Restricted Stock, Restricted Stock Units, Perforff mance Shares and/or other awards under Section 10 of this Plan, in the aggregate, for more than 400,000 Common Shares; provided, however, that with respect to a Participant’s first calendar year of service with the Company or a Subsidiary, the amount set forff th in this Section 3(d)(ii) is multiplied by two.

AVIENT CORPORATION COMPENSATION COMMITTEE CHARTER Membership • The Committee will consist entirely of directors who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange, including the additional independence requirements set forth in New York Stock Exchange Listed Company Manual Section 303A.02(a)(ii)

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Global Compact & fulfilled Communication of Progress (COP) requirements • New Sustainability Strategy overview page including our 2022 AIP ESG metrics • New ESG Performance page with ESG ratings, awards, and certifications • Increased disclosures on carbon emissions, including disclosure of Climate Change Scenario Analysis • Added new Product Stewardship and Chemical Management policies • Enhanced data reporting for Workforce Demographics • Improved social disclosures on human rights, dependent care and special leave and strategic training management 2021 SUSTAINABILITY REPORT Launching integrated sustainability website in parallel with report Aligned with leading reporting frameworks 6 Released July 2022 ESG RATINGS PERFORMANCE ESG AWARDS AND CERTIFICATIONS ESG PERFORMANCE & AWARDS 84th 3 1 2 7 T RAN S FO R MAT IO NAL OVE RV IE W Avient Protective Dyneema ® RECENT TRANSACTIONS Acquired Divested $1.45 B $0.95 B 9 Distribution UPDATED CAPITAL STRUCTURE & LIQUIDITY • Proceeds from completed sale of Distribution used to pay near-term maturing debt to strengthen balance sheet • Fixed/floating debt ratio of ~55/45 • Proven track record of deleveraging following major acquisitions through strong free cash flow generation • 2022 pro forma net debt/adjusted EBITDA expected to be 3.1x $725 $725 $575 $500 $600 $525 $650 $650 $600 Capital Structure Cas h $544 Undr awn Rev olve r $250 Liquidity $3.15B $2.40B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes 2023 Notes After Dyneema Acquisition After Distribution Divestiture $794M (1) $250M reflects estimated undrawn revolver following the divestiture of Distribution 10 PREVIOUS TRANSACTIONS Performance Solutions Products & $0.8 B COLOR $1.4 B Acquired (2020)Divested (2019) 11 • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $75 million of realized synergies anticipated in 2022 • Acquisition completed on July 1, 2020 for $1.45 billion.