This news release does not constitute an offer to sell or the solicitation of an offer to buy any securities nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

This news release does not constitute an offer to sell or the solicitation of an offer to buy

This news release does not constitute an offer to sell or the solicitation of an offer to buy any securities nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

Facility: Avient Corporation - Toluca, Mexico AV. Toluca 2000 Toluca, Estado de México 50200 México Activity: Design and Sampling Activity: Design and manufacture of colorants for plastics Facility: Avient Corporation - Vonore, TN 245 Avecor Drive Vonore, TN 37885 U.S.A.

ISO 9001:2015 No. de certificado: 65799 ISO 9001:2015 No. de certificado: 49862 ISO 9001:2015 No. de certificado: 31307 ISO 14001:2015 No. de certificado: 65537 RC 14001®:2015 No. de certificado: 65536 ISO 22000:2018 No de regulacion: 46389 IATF 16949:2016 No. de certificado: 63431 Toluca, Mexico ✓ ✓ ✓ ✓ Santa Clara, Mexico ✓ ✓ ✓ ✓ Guatemala City Guatemala ✓ ✓ ✓ Cota, Columbia ✓ ✓ ✓ Suzano, Brazil ✓ ✓ ✓ Itupeva, Brazil ✓ Buenos Aires, Argentina ✓ ✓ ✓ Santiago, Chile ✓ ✓ ✓ Puede encontrar certificados e información adicional en la biblioteca de certificados ISO globales de Avient ISO 9001:2015 ISO 14001:2015 es la norma internacional para la mejora ambiental continua y el cumplimiento normativo de los Sistemas de Gestión Ambiental (SGA).

Design and Manufacture of Colorants and Additives for Plastics Plasticos #28 Santa Clara Coatitla, Ecatepec Morelos 55540 Mexico Avient Corporation Design and Manufacture of Colorants and Additives for Plastics Zhang Jiang Hi-tech Park No. 88, Guoshoujing Road Pudong , 201203 Shanghai, Avient Corporation - Shenzhen, China Design and Manufacture of Colorants and Additives for Plastics No. 1, Qihang Industry Park, Haoxiang Road , 518104 Shenzhen, Avient Corporation Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin. Toluca 2000 Toluca Estado de México 50200 Mexico ISO 14001:2015ISO 14001:2015 Certificate Of ConformanceCertificate Of Conformance ANNEXANNEX Certificate No: 65537 Avient CorporationAvient Corporation At the below facilities FACILITY NAMEFACILITY NAME FACILITY ACTIVITYFACILITY ACTIVITY ADDRESSADDRESS Copyright as of the Effective Date, ABS Quality Evaluations, Inc.

Design and Manufacture of Colorants and Additives for Plastics Plasticos #28 Santa Clara Coatitla, Ecatepec Morelos 55540 Mexico Avient Corporation Design and Manufacture of Colorants and Additives for Plastics Zhang Jiang Hi-tech Park No. 88, Guoshoujing Road Pudong , 201203 Shanghai, Avient Corporation - Shenzhen, China Design and Manufacture of Colorants and Additives for Plastics No. 1, Qihang Industry Park, Haoxiang Road , 518104 Shenzhen, Avient Corporation Design and Manufacture of Colorants and Additives Concentrates and Specialty Compounds for Thermo Plastic Resin. Toluca 2000 Toluca Estado de México 50200 Mexico RC14001®:2023RC14001®:2023 Certificate Of ConformanceCertificate Of Conformance ANNEXANNEX Certificate No: 65536 Avient CorporationAvient Corporation At the below facilities FACILITY NAMEFACILITY NAME FACILITY ACTIVITYFACILITY ACTIVITY ADDRESSADDRESS Copyright as of the Effective Date, ABS Quality Evaluations, Inc.

No. 63431 Toluca, Mexico ✓ ✓ ✓ ✓ Santa Clara, Mexico ✓ ✓ ✓ ✓ Guatemala City Guatemala ✓ ✓ ✓ Cota, Columbia ✓ ✓ ✓ Suzano, Brazil ✓ ✓ ✓ Itupeva, Brazil ✓ Buenos Aires, Argentina ✓ ✓ ✓ Santiago, Chile ✓ ✓ ✓ ISO 9001:2015 A ISO 9001:2015 é uma norma global que descreve os processos específicos que as organizações devem criar, manter e melhorar para fabricar produtos ou prestar serviços com um Sistema de Gestão da Qualidade (SGQ) eficiente.

It is anticipated that the company will buy back shares through open market purchases or privately negotiated transactions from time to time.  

This news release does not constitute an offer to sell or the solicitation of an offer to buy