Registration information to access the Sustainability Day event will be provided in a news release in advance of the event. https://www.avient.com/sustainability 3 Webcast Details Avient will host a webcast on Thursday, July 27, 2023 at 8:00 a.m. To access Avient’s news library online, please visit www.avient.com/news. https://www.avient.com/investors https://edge.media-server.com/mmc/p/d4zy5fep https://www.avient.com/investors https://register.vevent.com/register/BI2f6c5ad2bc1b4150b7f39a5b024d27cf https://www.avient.com/investors/events-presentations https://www.avient.com/news-events 4 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. For more information, visit https://www.avient.com. https://www.avient.com/ 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

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29/6/2021 Formulario de Impresión de Constancia de Inscripción https://seti.afip.gob.ar/padron-puc-constancia-internet/ConsultaConstanciaAction.do 1/1 ADMINISTRACION FEDERAL DE INGRESOS PUBLICOS CONSTANCIA DE INSCRIPCION AVIENT ARGENTINA S.A. Mes de inicio: 10/2015 Mes de cierre ejercicio comercial: 12 DOMICILIO FISCAL - AFIP Vigencia de la presente constancia: 29-06-2021 a 29-07-2021 Hora 11:48:03 Verificador 102744316377 Los datos contenidos en la presente constancia deberán ser validados por el receptor de la misma en la página institucional de AFIP http://www.afip.gob.ar. http://www.afip.gob.ar/

With our hardware fabrication capabilities and Avient’s knowledge of composite ballistic protection technology, we were able to create modular systems that reduce time and logistic requirements for our brave soldiers.” 1 https://www.erdc.usace.army.mil/Missions/Military-Engineering/Deployable-Force-Protection-Demo/ To learn more about ballistic resistant solutions from Avient, visit avient.com or click to request a quote. SOLID FOUNDATIONS: SAFETY FIRST © 2024, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.erdc.usace.army.mil/Missions/Military-Engineering/Deployable-Force-Protection-Demo/ www.avient.com https://www.avient.com/content/ballistic-panel-quote-request-form

PEDOMAN PERILAKU | 17 DAFTAR ISI PERKENALAN PEDOMAN PERILAKU KITA MENGHORMATI SEMUA ORANG KEJUJURAN DI TEMPAT KERJA INTEGRITAS DALAM BISNIS KITA TANGGUNG JAWAB SOSIAL PERUSAHAAN SUMBER DAYA http://Kebijakan Penggunaan Sistem Informasi Avient, http://Kebijakan Penggunaan Sistem Informasi Avient, http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/GlobalPrivacyandDataProtectionPolicies/tabid/1870/Default.aspx http://polynet/ethics/CorporatePolicies/CyberandDataIncidentResponsePolicy/tabid/2729/Default.aspx Informasi dan Perdagangan Orang Dalam Di Avient, Anda mungkin mengetahui informasi penting terkait Avient atau perusahaan mana pun yang berbisnis dengan kita yang belum diungkapkan kepada publik. subject= http://Avient.com/sustainability https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 T&J T: Supervisor saya meminta saya untuk mengikuti prosedur pembuangan limbah baru, tetapi saya tidak yakin apakah prosedur itu aman atau bahkan sah. DAFTAR ISI PERKENALAN PEDOMAN PERILAKU KITA MENGHORMATI SEMUA ORANG KEJUJURAN DI TEMPAT KERJA INTEGRITAS DALAM BISNIS KITA TANGGUNG JAWAB SOSIAL PERUSAHAAN SUMBER DAYA PEDOMAN PERILAKU | 30 http://avient.ethicspoint.com http://avient.ethicspoint.com http://avient.ethicspoint.com Amerika Utara Global Headquarters Avon Lake, Amerika Serikat 33587 Walker Road Avon Lake, OH, Amerika Serikat 44012 Nomor Bebas Pulsa: +1 866 765 9663 Nomor Telepon: +1 440 930 1000 Faks: +1 440 930 3064 Asia Pasifik Regional Headquarters Shanghai, Tiongkok 2F, Block C 200 Jinsu Road Pudong, 201206 Shanghai, Tiongkok Telepon: +86 (0) 21 6028 4888 Faks: +86 (0) 21 6028 4999 Amerika Selatan Regional Headquarters Sao Paulo, Brasil Av.

Please verify this organization’s acceptance status by using the CPSC’s searchable database, located at http://www.cpsc.gov/cgi-bin/labsearch/. http://www.cpsc.gov/cgi-bin/labsearch/ For the tests to which this accreditation applies, please refer to the laboratory’s Chemical Scope of Accreditation.

12950 Worldgate Drive, Suite 800, Herndon, VA 20170-6007 USA A Member of the BSI Group of Companies. https://pgplus.bsigroup.com/CertificateValidation/CertificateValidator.aspx? Americas Headquarters: BSI Group America Inc., 12950 Worldgate Drive, Suite 800, Herndon, VA 20170-6007 USA A Member of the BSI Group of Companies. https://pgplus.bsigroup.com/CertificateValidation/CertificateValidator.aspx?

To learn more, please go to humotech.com. http://www.avient.com https://humotech.com/

Please verify this organization’s acceptance status by using the CPSC’s searchable database, located at http://www.cpsc.gov/cgi-bin/labsearch/. http://www.cpsc.gov/cgi-bin/labsearch/ For the tests to which this accreditation applies, please refer to the laboratory’s Chemical Scope of Accreditation.

Characteristic GlasArmor Thermoset Panels ThermoBallistic Thermoplastic Panels Steel Concrete Performance-to-Weight            Bullet Resistance – Pistols           Bullet Resistance – Rifles    NA1     Temperature Performance        2         UV Resistance       3         Electrical Conductivity              Flame Retardance    5   4         Ease of Installation             1 Ballistic resistance to rifle fire can be achieved by layering ThermoBallistic and GlasArmor panels – contact Avient 2 ThermoBallistic panels made with polypropylene resin systems 3 UV resistance is achieved using surface polymeric films 4 Flame retardant additives can be incorporated upon request under some circumstances 5 Fire rated for 1-hour per ASTM E-119-09c when tested in an interior wall system Compare the different materials used for ballistic protection https://go.avient.com/BallisticProtection? ga_5ZFGRMWVZK*MTczMTMzNDQ3Mi4yLjEuMTczMTMzNDQ4OC40NC4wLjA avient.com/contact-0 https://www.avient.com/sites/default/files/2023-01/GlasArmor%20Ballistic%20Resistant%20Panels%20Case%20Study.pdf