A sample of A-list companies from your Activity Group: AmorePacific Corporation Beiersdorf AG Borregaard ASA CDP SCORE REPORT - CLIMATE CHANGE 2023 Avient received an A- which is in the Leadership band. Leadership (A/A-): Implementing current best practices Management (B/B-): Taking coordinated action on climate issues Awareness (C/C-): Knowledge of impacts on, and of, climate issues Disclosure (D/D-): Transparent about climate issues UNDERSTANDING YOUR SCORE REPORT ACTIVITY GROUP PERFORMANCE Chemicals A- Your CDP score Average performance B C C Chemicals North America Global Average *Please note that the peer group average scores are compiled with only investor- requested company scores Avient Region North America Country/Area United States of America Questionnaire Chemicals Activity Group Chemicals The CDP Score Report allows companies to understand their score and indicate which categories require attention to reach higher scoring levels.

SER_Report_2021 ACTIVITY GROUP PERFORMANCE Trading, wholesale, distribution, rental & leasing Your company is amongst 19% of companies that reached Leadership level in your Activity Group A sample of A-list companies from your Activity Group: Grupo Logista Hilton Food Group plc Lerøy Seafood Group Samsung C&T Avient received a A- which is in the Leadership band. Leadership (A/A-): Implementing current best practices Management (B/B-): Taking coordinated action on supplier engagement Awareness (C/C-): Knowledge of impacts of supplier engagement Disclosure (D/D-): Transparent about supplier engagement UNDERSTANDING YOUR SCORE REPORT Avient Region North America Country United States of America Questionnaire Chemicals Activity Group Trading, wholesale, distribution, rental & leasing CDP evaluates organizations engagement with their suppliers on climate change.

CC_Score_Report_2021 ACTIVITY GROUP PERFORMANCE Trading, wholesale, distribution, rental & leasing Your company is amongst 49% of companies that reached Management level in your Activity Group A sample of A-list companies from your Activity Group: Grupo Logista Hyundai Glovis Co Ltd Avient received a B which is in the Management band. Leadership (A/A-): Implementing current best practices Management (B/B-): Taking coordinated action on climate issues Awareness (C/C-): Knowledge of impacts on, and of, climate issues Disclosure (D/D-): Transparent about climate issues UNDERSTANDING YOUR SCORE REPORT Avient Region North America Country United States of America Questionnaire Chemicals Activity Group Trading, wholesale, distribution, rental & leasing The CDP Score Report allows companies to understand their score and indicate which categories require attention to reach higher scoring levels.

Handelsregisteramt des Kantons Basel-Landschaft BASEL LANDSCHAFT lpt Firmennummer cHE-112.279.714 Rechtsnatur Gesellschaft mit beschränkter Haft ung Eintragung 18.03.2005 Löschung Ubertrag CH-280.3.008.468-3 von: CH-280.3.008.468-3/a auf: lllllililililIil ilril il Alle Eintragungen Ei Lö Firma Rel Sitz elarian*ebsties feoatings-AG @ Avient Switzerland GmbH (Avient Switzerland LLC) 1 Muttenz Ref Stammkap. I SHAB Arlesheim, 04.1 2.2O2O 07 :34 Fortsetzung auf der folgenden Seite Handelsregisteramt des Kantons Basel-Landschaft BASEL LANDSCHAFT Jlt cHE-112.279.714 Avient Switzerland GmbH Muttenz 2 Alle Eintragungen Ref TR-Nr TR-Datum SHAB SHAB-Dat.

Number: BC1228188 CERTIFICATE OF CHANGE OF NAME BUSINESS CORPORATIONS ACT I Hereby Certify that POLYONE CANADA ULC changed its name to AVIENT CANADA ULC on January 15, 2021 at 12:13 PM Pacific Time.

REPÚBLICA FEDERATIVA DO BRASIL CADASTRO NACIONAL DA PESSOA JURÍDICA NÚMERO DE INSCRIÇÃO 02.166.983/0001-66 MATRIZ COMPROVANTE DE INSCRIÇÃO E DE SITUAÇÃO CADASTRAL DATA DE ABERTURA 03/10/1997 NOME EMPRESARIAL AVIENT BRASIL LTDA.

No. 10231X Form W-9 (Rev. 10-2018) AVIENT CORPORATION ✔ 5 D 33587 WALKER ROAD AVON LAKE, OH 44012 3 4 1 7 3 0 4 8 8 7/20/2020

L'assemblée décide de modifier la dénomination de la Société en " Avient Colorants Belgium " avec effet au 1er décembre 2020, et déclare avoir connaissance du contenu de l'article 2:3 du Code des L'assemblée décide de modifier l'article 1 des statuts et de le remplacer, tel que repris ci-dessous dans le nouveau texte des statuts adopté par la présente assemblée. Elle est dénommée " Avient Colorants Belgium ".

Composites is a high-growth area where we’ve invested, such as in January when we purchased Fiber-Line, a global leader in customized engineered fibers and composite materials that serves the fiber optic cable, oil & gas, industrial and consumer industries.

-------------------------------------------------------------------------------------------------- CON FUNDAMENTO EN LA MATRÍCULA E INSCRIPCIONES EFECTUADAS EN EL REGISTRO MERCANTIL, LA CÁMARA DE COMERCIO CERTIFICA: NOMBRE, IDENTIFICACIÓN Y DOMICILIO Razón social: AVIENT COLOMBIA S.A.S Nit: 900.896.246-4 Domicilio principal: Cota (Cundinamarca) MATRÍCULA Matrícula No. 02613284 Fecha de matrícula: 10 de septiembre de 2015 Último año renovado: 2021 Fecha de renovación: 26 de marzo de 2021 Grupo NIIF: Grupo I. REFORMAS ESPECIALES Por Acta No. 17 del 9 de abril de 2021 de Accionista Único, inscrito en esta Cámara de Comercio el 12 de abril de 2021, con el No. 02683838 del Libro IX, la sociedad cambió su denominación o razón social de CLARIANT PLASTICS & COATINGS (COLOMBIA) SAS a AVIENT COLOMBIA S.A.S.