Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 60284888  jennifer.huang@avient.com Company Officers

Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Over the years, the range of color and additive concentrates has expanded to address the healthcare industry’s evolving performance and regulatory needs. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

By using the PCR Color Prediction Service, L’Oréal was able to efficiently address these challenges.  Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com  Company Officers

At Avient, our colorants and additives are developed to address material challenges at every stage of the development process, said Esperanza Laserna, General Sales Manager, LATAM Color, Additives, and Inks, at Avient. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

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”). The office of Chairman of the Board may or may not be an officer position. March 6, 2024 Avient Corporation Corporate Governance Guidelines 1.

Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

Finnish Patent and Registration Office Trade Register FI-00091 PRH, FINLAND tel. +358 (0)29 509 5000 registry@prh.fi Page: 1 (2) Business ID: 2046676-4 Date and time of creating the document: 01.12.2020 08:37:55 TRANSLATION OF THE EXTRACT FROM THE TRADE REGISTER, ELECTRONIC 01.12.2020 08:37:54 the details in the register Identifiers Name Avient Finland Oy Business ID 2046676-4 Entered in the register 31.03.2007 Company type Limited company Contact details: Postal address Äyritie 8 E 01510 Vantaa Street address Äyritie 8 E 01510 Vantaa Email tina.ahlquist@clariant.com Telephone 0106808500 Fax 0106808509 Name details Name Avient Finland Oy Auxiliary company name Drycolor Registered office Vantaa Share capital Share capital 169.000,00 € Number of shares 1 000 pcs Nominal value of a share 169,00 € Financial period Financial period 01.01 - 31.12 Financial statements The last financial statements submitted 01.01.2019 - 31.12.2019 Representation Page: 2 (2) Business ID: 2046676-4 Statutory representation: Under the law, the Board of Directors represents the company. Representation based on position: By the Chair of the Board and the Managing Director, each on their own, and by any two Board members jointly Persons role surname, first name(s) / company name date of birth / identity code citizenship Chair of the Board of Merklein, Norbert 03.05.1964 Citizen of Germany Norén, Jenny Eva Kristina 18.06.1975 Citizen of Sweden Smeds, Jan-Håkan 22.03.1961 Citizen of Finland Vetter, Alexander Helmut 04.07.1968 Citizen of Germany Managing Director Norén, Jenny Eva Kristina 18.06.1975 Citizen of Sweden Auditor PricewaterhouseCoopers Oy 0486406-8 Auditor with principal responsibility Grönroos, Maria Alice 19.02.1967 Citizen of Finland Additional information No details about beneficial owners have been registered for the company Name history Avient Finland Oy 01.12.2020 - Clariant Plastics & Coatings (Finland) Oy 04.01.2016 - 01.12.2020 Clariant Masterbatches (Finland) Oy 31.03.2007 - 04.01.2016 Source of information: Finnish Patent and Registration Office

Homepage // News Center // PolyOne Corporation Announces Quarterly Dividend Media Contact: Kyle Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Company Officers

Avient’s EH&S Management System (EH&S MS) is managed by its Corporate Environmental, Health, Safety and Product Stewardship Department, and degreed technical experts employed in all regions and businesses. We established a comprehensive EH&S MS to systemically identify and address any risks.