Bob Patterson Chairman, President, and CEO March 12, 2021 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems.

Current: • 52% of our top suppliers have been assessed through the end of 2021. In 2021, our sustianable solutions portfolio grew by 16% over prior year. As of the end of 2021, 52% of our top suppliers have been assessed.

Eastern Time on February 9, 2021. Eastern Time on Tuesday, February 9, 2021. EST on February 9, 2021.

LUSSEMBURGO Domicilio digitale/PEC polyonesarl@legalmail.it Numero REA VA - 370258 Codice fiscale e n.iscr. al 03669670121 Partita IVA 03669670121 Forma giuridica societa' costituita in base a leggi di altro stato Data iscrizione 07/09/2018 Data ultimo protocollo 30/11/2021 Preposto Della Sede Secondaria FUSI ALBERTO Rappresentante dell'Impresa ATTIVITA' Stato attività attiva Data inizio attività 31/10/2018 Attività prevalente commercio all'ingrosso di materiali coloranti per materie plastiche. A CUXK0XMKM92D910207D0 estratto dal Registro Imprese in data 01/12/2021 Indice 1 Sede 2 Informazioni da statuto/atto costitutivo 3 Trasferimenti d'azienda, fusioni, scissioni, subentri 4 Attività, albi ruoli e licenze 5 Sedi secondarie ed unita' locali 6 Aggiornamento impresa 1 Sede Indirizzo Sede legale 9638 POMMERLOCH 19 ROUTE DE BASTOGNE . dell'attività prevalente Importanza: prevalente svolta dall'impresa Addetti (elaborazione da fonte INPS) Numero addetti dell'impresa rilevati nell'anno 2021 (Dati rilevati al 30/06/2021) Visura ordinaria societa' di capitale • di 5 10 I trimestre II trimestre Valore medio Dipendenti 9 9 9 Totale 9 9 9 Distribuzione dipendenti Distribuzione per Contratto Tempo Indeterminato Distribuzione per Orario di lavoro Tempo Pieno Distribuzione per Qualifica Impiegato Quadro Dirigente Addetti nel comune di GALLARATE (VA) Unità locali: 1 I trimestre II trimestre Valore medio Dipendenti 7 7 7 Totale 7 7 7 Addetti nel comune di 9638 POMMERLOCH Unità locali: 1 I trimestre II trimestre Valore medio Dipendenti 2 2 2 Totale 2 2 2 Albi e Ruoli Visura ordinaria societa' di capitale • di 6 10 Impresa Operante Con L'estero Numero: VA059868 Data: 04/06/2020 5 Sedi secondarie ed unita' locali Sede Secondaria n.

Avient Corporation 33587 Walker Road Avon Lake, OH 44012 1 AVIENT’S POSITION ON HUMAN RIGHTS July 2021 OUR COMMITMENT Avient is dedicated to conducting business ethically and with integrity, and our Position on Human Rights is part of our commitment to socially responsible business practices.

w.e.f.02/08/2021) Former Name if any : POLYONE SINGAPORE PTE LTD Incorporation Date. : 14/12/1990 Company Type : PRIVATE COMPANY LIMITED BY SHARES Status : Live Company Status Date : 14/12/1990 Principal Activities Activities (I) WHOLESALE TRADE OF A VARIETY OF GOODS WITHOUT A DOMINANT PRODUCT (46900) : IMPORT/EXPORT AND SALES OF POLYMERS Description : Activities (II) : Description Capital CurrencyIssued Share Capital Share TypeNumber of Shares * (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY694600 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY7200000 * Number of Shares includes number of Treasury Shares CurrencyPaid-Up Capital Share TypeNumber of Shares (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY Page 1 of 4 Number Of Shares Currency COMPANY HAS THE FOLLOWING ORDINARY SHARES HELD AS TREASURY SHARES Registered Office Address 3 INTERNATIONAL BUSINESS PARK #04-14/15 NORDIC EUROPEAN CENTRE SINGAPORE (609927) Date of Address 16/08/2020: Date of Last AGM : 29/08/2020 Date of Last AR : 26/10/2020 FYE As At Date of Last AR : 31/12/2019 Audit Firms NAME ERNST & YOUNG LLP Amount Secured Chargee(s) Charges CurrencyCharge No. DATE : 02/08/2021 ACRA210802126796 This is computer generated.

To learn more, visit the Sustainability page on avient.com. 1.844.4AVIENT www.avient.com Copyright © 2021, Avient Corporation.

Página [1] de [3] CEDULA DE IDENTIFICACION FISCAL PMS190904JZ1 Registro Federal de Contribuyentes AVIENT COLORANT SOLUTIONS MX Nombre, denominación o razón social idCIF: 19090104984 VALIDA TU INFORMACIÓN FISCAL CONSTANCIA DE SITUACIÓN FISCAL Lugar y Fecha de Emisión ECATEPEC DE MORELOS , MEXICO A 18 DE MAYO DE 2021 PMS190904JZ1 Datos de Identificación del Contribuyente: RFC: PMS190904JZ1 Denominación/Razón Social: AVIENT COLORANT SOLUTIONS MX Régimen Capital: SOCIEDAD DE RESPONSABILIDAD LIMITADA DE CAPITAL VARIABLE Nombre Comercial: AVIENT COLORANT SOLUTIONS MX Fecha inicio de operaciones: 04 DE SEPTIEMBRE DE 2019 Estatus en el padrón: ACTIVO Fecha de último cambio de estado: 04 DE SEPTIEMBRE DE 2019 Datos de Ubicación: Código Postal:55540 Tipo de Vialidad: CALLE Nombre de Vialidad: PLASTICOS Número Exterior: 28 Número Interior:B-102 Nombre de la Colonia: SANTA CLARA COATITLA Nombre de la Localidad: Nombre del Municipio o Demarcación Territorial: ECATEPEC DE MORELOS Nombre de la Entidad Federativa: MEXICO Entre Calle: CANAL DE RISCO Y Calle: AVENIDA VIA MORELOS Correo Electrónico: caio.zuccarelli@clariant.com Tel. Cadena Original Sello: ||2021/05/18|PMS190904JZ1|CONSTANCIA DE SITUACIÓN FISCAL|200001088888800000031|| Sello Digital: ZdHJjgtMx1zfaMTEd5detknfgJSmyR0w5xOeaE+fPEJIXG4dhEPwNeDejKQMDjrMtvqa0/9LfIHUO5+TLWy48zVP 6X5I+MgGmmO9rpUv7Ak9/0PjendAtGzcD3VkgsFhaHoBiKnXweDYrLCrEHwN/T4l1kq0iwii08WlbEU3uC4= Página [3] de [3]

Vinod Purayath, P.h.D.: Senior Vice President and Chief Technology Officer, June 2021 to date. a semiconductor company based in California) from April 2019 to June 2021. No such impairments were recognized during 2023, 2022 or 2021.

Jul 08, 2021