Factors that could cause actual results to differ materially from those implied by these forward- looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs and any recessionary conditions.

Factors that could cause actual results to differ materially from those implied by these forward- looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K for the year ended December 31, 2024 under Item 1A, “Risk Factors.” Any such written notice directed to Avient should be addressed to Equiniti Trust Company, LLC, 1110 Centre Pointe Curve, Suite 101, Mendota Heights, MN 55120 or oral notice may be given by calling +1-855-598-2615: • to receive a separate copy of the Annual Report on Form 10-K for the fiscal year ended December 31, 2024, proxy statement or Notice of Internet Availability of Proxy Materials for the Annual Meeting; • to receive separate copies of those materials for future meetings; or • if the shareholder shares an address and wishes to request delivery of a single copy of proxy materials, rather than receiving multiple copies.

Sebagai anggota Dewan Kimia Amerika (American Chemistry Council) Perusahaan Responsible Care® dan anggota pendiri Alliance to End Plastic Waste, kami terus berkomitmen melalui No Surprises PledgeSM dan Janji Keberlanjutan kami. Sebagai anggota Dewan Kimia Amerika (American Chemistry Council) Perusahaan Responsible Care® dan anggota pendiri Alliance to End Plastic Waste, kami terus berkomitmen melalui No Surprises PledgeSM dan Janji Keberlanjutan kami, serta kita menjunjung prinsip tersebut dengan mewujudkan nilai pribadi yang berupa Integritas, Kejujuran, dan Rasa Hormat.

Como una empresa con la certificación Responsible Care® (Cuidado responsable) del American Chemistry Council (Consejo Estadounidense de Química) y miembro fundador de Alliance to End Plastic Waste (Alianza para terminar con el desecho de plásticos), asumimos un mayor compromiso a través de nuestro hito No Surprises PledgeSM (Promesa de cero sorpresas) y nuestra Promesa de sostenibilidad. Como una empresa con la certificación Responsible Care® (Cuidado responsable) del American Chemistry Council (Consejo Estadounidense de Química) y miembro fundador de Alliance to End Plastic Waste (Alianza para terminar con el desecho de plásticos), asumimos un mayor compromiso a través de nuestro hito No Surprises PledgeSM (Promesa de cero sorpresas) y nuestra Promesa de sostenibilidad, y defendemos estos principios viviendo los valores personales de integridad, honestidad y respeto.

Como empresa de American Chemistry Council Responsible Care® y miembro fundador de Alliance to End Plastic Waste estamos aún más comprometidos a través de nuestra emblemática No Surprises PledgeSM (Promesa sin sorpresa) y nuestra Promesa de sostenibilidad. Como empresa de American Chemistry Council Responsible Care® y miembro fundador de Alliance to End Plastic Waste, nos comprometemos además a través de nuestra No Surprises PledgeSM (Promesa sin sorpresas) y nuestra Promesa de sostenibilidad, y defendemos estos principios realizando nuestras actividades conforme a los valores personales de integridad, honestidad y respeto.

Als ein Responsible Care®-Unternehmen des American Chemistry Council und Gründungsmitglied der Alliance to End Plastic Waste sind wir außerdem durch unser wegweisendes No Surprises PledgeSM (Keine-Überraschungen-Gelöbnis) und unser Nachhaltigkeitsversprechen gebunden. Als ein Responsible Care®-Unternehmen des American Chemistry Council und Gründungsmitglied der Alliance to End Plastic Waste sind wir außerdem durch unser wegweisendes No Surprises PledgeSM (Keine-Überraschungen-Gelöbnis) und unser Nachhaltigkeitsversprechen gebunden und wir honorieren diese Prinzipien, indem wir die persönlichen Werte Integrität, Ehrlichkeit und Respekt leben.

Jako spółka, która zobowiązała się przestrzegać zasad programu Responsible Care® American Chemistry Council (Amerykańskiej Rady Przemysłu Chemicznego) i jako współzałożyciel inicjatywy „Alliance to End Plastic Waste” („Przymierze na rzecz ograniczenia odpadów z tworzyw sztucznych”) nie ustajemy w staraniach poprzez nasze sztandarowe No Surprises PledgeSM (Zobowiązanie do unikania niespodziewanych sytuacji) oraz obietnicę zrównoważonego rozwoju. Jako spółka, która zobowiązała się przestrzegać zasad programu Responsible Care® American Chemistry Council (Amerykańskiej Rady Przemysłu Chemicznego) i jako współzałożyciel inicjatywy „Alliance to End Plastic Waste” („Przymierze na rzecz ograniczenia odpadów z tworzyw sztucznych”) nie ustajemy w staraniach poprzez nasze sztandarowe No Surprises PledgeSM (Zobowiązanie do unikania niespodziewanych sytuacji) oraz obietnicę zrównoważonego rozwoju, a także stosujemy te zasady, wprowadzając w życie osobiste wartości integralności, uczciwości i szacunku.

Quale azienda facente parte del programma Responsible Care® dell’American Chemistry Council (Consiglio di chimica americano) e membro fondatore dell’Alliance to End Plastic Waste (Alleanza per porre fine ai rifiuti in plastica), ci impegniamo anche attraverso il nostro punto di riferimento, No Surprises PledgeSM (impegno a non riservare sorprese) e la nostra Promessa di sostenibilità. Quale azienda facente parte del programma Responsible Care® dell’American Chemistry Council (Consiglio di chimica americano) e membro fondatore dell’Alliance to End Plastic Waste (Alleanza per porre fine ai rifiuti in plastica), ci impegniamo anche attraverso il nostro punto di riferimento, No Surprises PledgeSM (impegno a non riservare sorprese) e la nostra Promessa di sostenibilità, e sosteniamo questi principi vivendo secondo i valori personali di integrità, onestà e rispetto.

American Chemistry Council Responsible Care® (Amerikan Kimya Konseyi Sorumlu Bakım) Şirketi ve Alliance to End Plastic Waste (Plastik Atıkları Bitirme İttifakı) kurucu üyesi olarak, No Surprises PledgeSM (Sürprizler ile Şaşırtmama Güvencemiz) ve Sürdürülebilirlik Taahhüdümüz ile çok daha kararlıyız. American Chemistry Council Responsible Care® (Amerikan Kimya Konseyi Sorumlu Bakım) Şirketi ve Alliance to End Plastic Waste (Plastik Atıkları Bitirme İttifakı) kurucu üyesi olarak, No Surprises PledgeSM (Sürprizler ile Şaşırtmama Güvencemiz) ve Sürdürülebilirlik Taahhüdümüz ile çok daha kararlıyız ve Dürüstlük, Doğruluk ve Saygı değerlerini yaşayarak bu ilkeleri koruyoruz.

Als American Chemistry Council Responsible Care® Company en een van de oprichters van de Alliance to End Plastic Waste, zijn we verder toegewijd aan ons credo, onze No Surprises PledgeSM en onze duurzaamheidsbelofte. Als Responsible Care®- bedrijf van de American Chemistry Council en een van de oprichters van de Alliance to End Plastic Waste, zetten we ons verder in voor ons oriëntatiepunt No Surprises PledgeSM (Gelofte voor geen verrassingen) en onze Sustainability Promise (Belofte voor duurzaamheid) en we steunen deze beloftes door te leven krachtens de persoonlijke waarden van integriteit, eerlijkheid en respect.