https://www.avient.com/products/polymer-additives/clarifier-and-toner-additives/colormatrix-optica-toners-pet https://www.avient.com/products/polymer-colorants/liquid-color-concentrates/hiformer-liquid-masterbatches https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-joule-reheat-additive-pet https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-smartheat-rhc https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colormatrix-reprize-iv-builder-pet https://www.avient.com/products/polymer-additives/processing-enhancement-additives/cesa-extend-additives https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colormatrix-eze-slip-agent-pet https://www.avient.com/products/polymer-additives/acetaldehyde-scavengers-pet/colormatrix-aazure-acetaldehyde-control-technology-pet https://www.avient.com/products/polymer-additives/acetaldehyde-scavengers-pet/colormatrix-triple-aa-scavenger-pet OXYGEN SCAVENGERS Challenge: Oxygen can permeate PET bottles, reducing a product’s shelf life. This literature shall NOT operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 1.844.4AVIENT www.avient.com https://www.avient.com/products/polymer-additives/oxygen-scavengers/colormatrix-amosorb-oxygen-scavenger-pet https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives/colormatrix-ultimate-uv-light-barrier-pet https://www.avient.com/products/polymer-colorants/liquid-color-concentrates/impress-high-gloss-metallic-effect-colorants https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-color-additive-concentrates https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ir-sortable-black-recyclable-packaging

Additional information is available at https://www.cbp.gov/trade/forced-labor In furtherance of the foregoing, we expect our Suppliers to: • Supply only conflict free 3TG metals to Avient; https://nam10.safelinks.protection.outlook.com/? url=https%3A%2F%2Fwww.cbp.gov%2Ftrade%2Fforced-labor&data=05%7C01%7Cjacqueline.thomson%40avient.com%7Ca0427e02fa1b4b576fe208db6dac207e%7C7bc21b5c83b04482be9e2825d33c1759%7C0%7C0%7C638224359373869329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xxFjS7ADNXRYgriLexntpLUCOyllzLGactoRmj2EoCE%3D&reserved=0 https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Engage in due diligence of supply chains by following a nationally or internationally recognized due diligence framework; • Upon request, report to Avient on its due diligence process and certify that 3TG metals supplied to Avient from the Covered Countries are conflict free; and • Promptly report to Avient any supply chain changes regarding the origin of 3TG metals or conflict status

http://www.avient.com/investors 2 About Avient Avient Corporation (NYSE: AVNT), with expected 2021 revenues of $4.75 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com http://www.avient.com/ http://www.avient.com/news mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com NEWS RELEASE

SOURCE: Repurposing gas infrastructure for hydrogen | 2020 Siemens Energy Global (siemens-energy.com) © 2023, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.fiber-line.com/en/ https://www.siemens-energy.com/global/en/news/magazine/2020/repurposing-natural-gas-infrastructure-for-hydrogen.html https://www.siemens-energy.com/global/en/news/magazine/2020/repurposing-natural-gas-infrastructure-for-hydrogen.html

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The webcast can be viewed at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/edkwvu9r.

https://www.avient.com/company/policies-and-governance/code-conduct https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Avient Corporation 33587 Walker Road Avon Lake, OH 44012 3 Our Supply Chain At Avient, we commit to comply with laws and regulations supporting human rights such as the California Transparency in Supply Chains Act, the UK Modern Slavery Act, the Dodd-Frank Act requiring disclosures on conflict minerals, and the EU’s - Conflict Minerals Regulation. Our disclosures are located at: https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking- statement We reinforce Our Commitment to human rights, as set forth above, throughout our organization by incorporating and reflecting these principles in organizational policies, training programs, and our governance management framework. https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf

Safety and Health A top priority at Avient is the safety and health of our employees, and our ultimate goal is to operate injury free. Our Board sets the appropriate “tone at the top” when it comes to risk tolerance and management. Because Covered Years are presented in the table in reverse chronological order (from top to bottom), the table should be read from bottom to top for purposes of understanding cumulative returns over time

Using GlasArmor panels, Ballisti-Wall® and Ballisti- Cover® solutions enable utility companies to add a superior level of protection to critical components and meet FERC security requirements within a modular, adaptable construction. 1 https://www.nbcnews.com/news/us-news/three-substations- attacked-washington-state-rcna63214 2 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf © 2023, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about Avient’s advanced composite solutions, visit www.avient.com/composites. https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf http://www.avient.com/composites

https://www.avient.com/investors https://edge.media-server.com/mmc/p/xkwywv44 https://www.avient.com/investors https://register.vevent.com/register/BI3163094c31c24a9680e9118cec4f9167 https://www.avient.com/investors/events-presentations https://www.avient.com/news 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.