Roman, Secretary of State of the Government of Puerto Rico, CERTIFY: That on July 13, 2020, at 08:50 AM, "POLYONE PUERTO RICO, LLC", registry number 365432, performed the following transaction: Name Change Previous Actual POLYONE PUERTO RICO, LLC AVIENT PUERTO RICO, LLC CERTIFICATE OF AMENDMENT Government of Puerto Rico IN WITNESS WHEREOF, the undersigned by virtue of the authority vested by law, hereby issues this certificate and affixes the Great Seal of the Government of Puerto Rico, in the City of San Juan, Puerto Rico, today, July 13, 2020.

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.”

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.

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COMPOSITE TRIPOD STANDS OUT FROM THE CROWD INNOVATIVE, ROLLABLE TRIPOD DESIGN GAINS STRENGTH AND DURABILITY FROM COMPOSITES © 2023, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about the Polystrand thermoplastic composites that made the Revolve tripod possible, visit www.avient.com/composites. The tripod designers consulted with the advanced composite product experts at Avient, and trialed several formulations of Polystrand™ continuous fiber-reinforced thermoplastic composites. When deployed, the composite material quickly unrolls to form rigid tubes that are strong, stable, rugged, and weatherproof—providing the ultimate user experience even in extreme conditions.

IVCC and Avient joined forces to step up the global fight to eradicate malaria. Avient and IVCC created a new medium scale masterbatch production laboratory in China to support research and development into non-registered novel active ingredients for incorporation into long lasting treated nets. Avient has extensive global ability in the formulation development and manufacturing of groundbreaking material solutions to support malaria control, including a technologically advanced anti-mosquito masterbatch for use in long lasting treated nets.

IVCC and Avient joined forces to step up the global fight to eradicate malaria. Avient and IVCC created a new medium scale masterbatch production laboratory in China to support research and development into non-registered novel active ingredients for incorporation into long lasting treated nets. Avient has extensive global ability in the formulation development and manufacturing of groundbreaking material solutions to support malaria control, including a technologically advanced anti-mosquito masterbatch for use in long lasting treated nets.

NYSE: POL), a leading global provider of specialized polymer materials, services and solutions, today announced that its Board of Directors has elected in 2008 as senior vice president and chief financial officer, where he was responsible for global treasury, planning, M&A, accounting, internal audit functions, and investor relations.