March 2025 - Final and Approved version.pdf Avient Corporation Corporate Governance Guidelines The Board of Directors (the “Board”) of Avient Corporation (the “Company”) has adopted the following Corporate Governance Guidelines (the “Guidelines”). In general, nominees are selected on the basis of the following criteria, among others: business or professional experience; knowledge and skill in certain specialty areas such as accounting and finance, international markets, physical sciences and technology, or the specialty materials industry; personal characteristics such as ethical standards, integrity, judgment, leadership, and the ability to devote sufficient time to the affairs of the Company; substantial accomplishment with demonstrated leadership capabilities; freedom from outside interests that conflict with the Company’s best interests; the unique backgrounds and experience they will bring to the Board, including differences in viewpoint, background and skill; and the needs of the Company from time to time. The Board administers its risk oversight function directly and through its committees. 8 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 reports on corporate responsibility and/or sustainability published by the Company; and (iv) the Environmental, Health and Safety Committee oversees risks related to safety, health, physical security, environmental, and product stewardship matters.

AVIENT BELGIUM 2, RUE MELVILLE WILSON 5330 ASSESSE- BELGIUM Bureau Veritas Certification France certify that the Management System of the above organization has been audited and found to be in accordance with the requirements of the management system standard detailed below: Standard ISO 14001 : 2015 Scope of certification DESIGN AND MANUFACTURE OF COLOUR AND ADDITIVE CONCENTRATES, THERMOPLASTIC RESINS AND SPECIALITY COMPOUNDS.

Certificate Number: Certificate expiration date: Effective date: 31-10-2022 30-10-2025 Expiry date of previous cycle: 30-10-2022 31-10-2016 ES133794 Scope of certification: MANUFACTURING OF MASTERBATCHES, ADDITIVES AND COMPOUNDS FOR PIGMENTING THERMOPLASTIC MATERIALS USED IN FOOD INDUSTRY ISO 22000:2018 POLIGONO INDUSTRIAL EZCABARTE, C/H, Nº3 - 31194 - ORICAIN - NAVARRA - ESPAÑA AVIENT ESPAÑA, S.L.

James S T A T E OF O H I O C E R T I F I C A T E Ohio Secretary of State, Frank LaRose 4463782 It is hereby certified that the Secretary of State of Ohio has custody of the business records for and, that said business records show the filing and recording of: AVIENT CORPORATION United States of America State of Ohio Office of the Secretary of State Witness my hand and the seal of the Secretary of State at Columbus, Ohio this 23rd day of April, A.D. 2020. NOW, THEREFORE, BE IT RESOLVED, that, effective as of the time and date that the applicable certificate is accepted for filing by the Ohio Secretary of State (the “Effective Time”), the name of the Company shall be changed from “PolyOne Corporation” to “Avient Corporation.”

Plus, with an opaque natural color, reSound BIO materials offer excellent colorability, making them ideal for applications such as cosmetics packaging, personal care products, household appliances, and consumer electronics. Customization options may include bio- renewable content percentages, hardness, and color. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Color can be added to the additive in a combination masterbatch allowing for both color and stain resistance efficacy to be integrated into the yarn during the spin-dyeing (dope-dyeing) process. KEY BENEFITS Avient’s stain-resistant concentrates provide the following benefits: • Efficient, long-lasting stain release properties with no impact on yarn spinnability • Innovative non-fluorine formulation • Suitable for POY (DTY; ATY) and BCF with processing temperatures up to 300°C • Can be combined with color into a single product for convenience • Compatible with bath-dyeing and piece-dyeing • Developed for spin-dyeing—a waterless one-in- one process to dye and enhance the performance of synthetic fibers • Product guidance and technical assistance from our experts 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

These include positions in Assistant Corporate Corporate Controller; an ex-pat assignment in the UK supporting Avient’s Color business; Director of Finance for the Color, Additives & Inks segment; and, most recently, as Vice President of Internal Audit. Inglis has taken on numerous special assignments in his tenure, including supporting Avient’s speciality transformation through M&A activity as well as establishing Avient’s Global Business Services (GBS). Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

DIFAS T O O T H B R U S H H A N D L E • Replace current polymer with a more sustainable solution • Excellent surface finish with multiple color options • Processed using current molding equipment and machinery • Used formulation expertise to develop a custom formulation that met critical quality parameters and enabled customer to use existing molding equipment • Enabled customer to work towards sustainability goals and bring a competitive solution to the market • Enhanced the marketplace appeal of the end product with colorability of the material Maxxam BIO Bio-based Polyolefin Formulations KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION SUSTAINABILITY + AESTHETIC LEARN MORE © 2024, Avient Corporation, All Rights Reserved https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/maxxam-bio-bio-based-polyolefin-formulations DIFAS

NORBERT MERKLEIN Vice President and General Manager EMEA, Color, Additives and Inks Norbert Merklein serves as vice president and general manager for the Europe, Middle East and Africa (EMEA) region of Color, Additive and Inks at Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Merklein joined Avient in July of 2020 through the acquisition of the Clariant Masterbatch business. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com https://www.avient.com/

HEALTHCARE DEVICE MANUFACTURER W E B K N E E B R A C E • Good bonding to polypropylene (PP) • Flexible and soft-touch feel • Skin contact, general FDA compliance • Good tensile strength and resilience • Excellent colorability • Offered material that passed the required FDA regulations • Provided high elasticity memory and ultra soft tactile finish to meet the comfort and pleasant surface feeling requirements • Delivered TPE with easy and stable processing and colorability DynaflexTM Thermoplastics Elastomer KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION COMPLIANCE + SOFT TOUCH LEARN MORE Copyright © 2021, Avient Corporation.