Avient Sustainability Day - September 20, 2023 Avient Q1 2022 Earnings – April 20, 2022 Mar 20, 2013

Avient Sustainability Day - September 20, 2023 Avient Q1 2022 Earnings – April 20, 2022 Mar 20, 2020

Avient Sustainability Day - September 20, 2023 Avient Q1 2022 Earnings – April 20, 2022 Mar 20, 2014

This is to confirm that the Environmental, Health, Safety and Security Management System of: Avient Corporation HQ 33587 Walker Road The Environmental, Health, Safety and Security Management System is applicable to: Certificate No: 65536 Effective Date: 29 September 2023 Expiration Date: 28 September 2026 Revision Date: 22 November 2023 Dominic Townsend, President CORPORATE SUPPORT ACTIVITIES, DESIGN, MANUFACTURE AND DISTRIBUTION OF COLOUR AND ADDITIVE CONCENTRATES, THERMOPLASTIC RESINS AND PELLETS, SPECIALTY COMPOUNDS AND COLORANTS. Mariana Langiewicza 50 Lódzkie Konstantynow 95-050 Poland Activity: Design & Manufacture of Color, Additive Concentrate & Specialty Activity: Design and Manufacture of Colour and Additive Concentrates, Facility: Avient Pakistan (Private) Limited 1-A/1, Sector-20 Korangi Industrial Area Korangi, Sindh 74900 Pakistan Facility: Avient Corporation - Lahnstein, Germany Hohenrhein 1 56112 Lahnstein, Rheinland-Pfalz Germany Activity: Design and Manufacture of Colour and Additive Concentrates, Activity: Design and Manufacture of colour and additive concentrates, thermoplastic resins and specialty compounds Facility: Avient Corporation - Esenyurt, Turkey Orhan Gazi Mahallesi 1683 Sokak No:6 34538 Esenyurt Istanbul Turkey Facility: Avient Corporation - Jurong, Singapore No. 8 Third Chin Bee Road Jurong Industrial Estate Jurong 618684 Singapore Activity: Design and Manufacture of Specialty Engineered Thermoplastics Activity: Design and Manufacture of Colorants and Additives for Plastics Page 5 of 10 Facility: Avient Corporation - Lomagna, Italy Via Piave 12 23871, Lomagna, Lecco Facility: Avient Corporation - Lomas de Zamora, Argentina AV .

It offers a set of 20 color concepts connecting with major developments in society, from alternative energy and artificial intelligence to nocturnal lifestyle Visitors are invited to explore and discuss Avient’s latest innovations at its two sponsorship locations: the TechTalk Show Area (Hall 16, Booth R11) and the SportsTech Chic + Green Gallery (Hall 20, Booth L61). Cesa™ Fiber Additives for Cool & Warm Feeling – Offer Comfort & Efficiency for Sports Clothes (April 16, 14:50–15:10, Hall 20, Booth L61).

TEMPERATURE DISTRIBUTION DIAGRAM • Test Method: FTTS-FA-010-2007 4.2 • Equipment: Thermovision • Heat Source: 500W Halogen Lamp • Heat Distance: 100 cm Surface temperature before exposure: 20.22°C Surface temperature after 10 min exposure: 33.85°C Temperature change: +13.6°C Added Cesa Fiber Additives for heat preservation TEST METHOD STANDARD REQUEST TEST RESULT GB/T30127 Far infrared radiation properties Far infrared emissivity ≥0.88 (5-14um) (Test temperature: 34°C) 0.9 Far infrared radiation temperature rise ≥ 1.4°C 9°C GB/T 18319-2019 Thermal retention with accumulated by infrared ray Maximum temperature rise ≥ 6°C 8.9°C Mean temperature rise ≥ 4.4°C (20 minutes) 5.6°C FTTS-FA-010 Infrared radiation properties & thermal retention temperature rise Average emissivity ≥ 0.8 (2-22um) (Test temperature: 25°C) 0.8 Specified heating ΔT ≥ 0.5°C (relative to the standard) +5.34°C (ΔT) GB/T 11048-2008 Method A Thermal transmittance Unit: clo Naked body: 0 Underwear: 0.04 T-shirt: 0.09 Thick sweater: 0.35 Winter coat: 0.7 All the data above are the reference value 0.625 Human Physiological Experiment Blood flow volume +12.9% Blood flow velocity +13.6% Blood oxygenation(%SpO2) +1.7% www.avient.com Copyright © 2023, Avient Corporation.

Purpose Innovator of materials solutions to help our customers succeed, while enabling a sustainable world Strategic Approach Intersecting high growth markets and secular trends with our technologies to create product platforms of scale Foundational Strengths Strategic Drivers Unwavering customer focus Global reach with a local touch Diverse technology portfolio Commercial excellence, financial rigor & prudence Culture of safety and sustainability Catalyze the core Build new platforms of scale Portfolio prioritization Amplify Innovation Digital for operational excellence & growth Leadership, talent and culture for the Avient of the future Growing at GDP+ Growing at 10% plus CAGR Our Purpose and Strategic Framework Dear Avient Shareholders, 2024 was a positive year for Avient where our primary focus was on organic revenue growth and margin expansion. THIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING THIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Environmental, Health and Safety 4.

The data importer shall certify the deletion of the data to the data exporter. If the ICO issues a revised Approved Addendum under Section 18, if any Party selected in Table 4 “Ending the Addendum when the Approved Addendum changes”, will as a direct result of the changes in the Approved Addendum have a substantial, disproportionate and demonstrable increase in: a its direct costs of performing its obligations under the Addendum; and/or b its risk under the Addendum, and in either case it has first taken reasonable steps to reduce those costs or risks so that it is not substantial and disproportionate, then that Party may end this Addendum at the end of a reasonable notice period, by providing written notice for that period to the other Party before the start date of the revised Approved Addendum. 20. Clause 16(e); Updated 08/04/2022 20 viii.

ตดิต่อเรา หากคุณมคีําถามใด ๆ หรอืตอ้งการใชส้ทิธิข์องคุณ คุณสามารถตดิต่อเราไดท้ี:่ The Corporate Privacy Officer Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 อเีมล: PRIVACY.OFFICER@AVIENT.COM โทรศพัท:์ 1-800-901-2078 คุณยงัสามารถส่งคําถามหรอืคําขอเกีย่วกบัความเป็นส่วนตวัของคุณผ่านแบบฟอรม์ออนไลนไ์ด ้ สามารถตดิต่อเจา้หนา้ทีด่า้นการคุม้ครองขอ้มูลของ Avient ไดท้ี ่PRIVACY.OFFICER@AVIENT.COM ** สําหรบัผูส้มคัรในเปรู ขอ้มูลส่วนบุคคลจะไดร้บัการเก็บไวใ้นคลงัฐานขอ้มูล "[avient.taleo.net]" ซึง่ลงทะเบยีนใน National Personal Data Protection Registry ดว้ยรหสั RNPDP-PJP Nº [*]" วนัทีม่ผีลบงัคบัใช:้ 1 สงิหาคม 2020 mailto:PRIVACY.OFFICER@AVIENT.COM https://privacyportal.onetrust.com/webform/b25cf7b1-a93a-4d26-8c84-ceda4d0ae91b/e180cbe4-d1b9-49bd-b621-cb5f6a0f42cb mailto:PRIVACY.OFFICER@AVIENT.COM

Ao candidatar-se para um cargo, você pode fornecer informações pessoais, incluindo: https://avient.referrals.selectminds.com/ mailto:HR@polyone.com • Identificadores e Informações de Contato, como seu nome, data de nascimento, endereço residencial, e-mail particular, número de telefone, Identificadores governamentais (como a sua carta de habilitação e/ou número de identidade nacional); • Dados de Login, incluindo seu endereço de e-mail, nome de usuário e senha quando você inicia sessão para enviar a sua candidatura; • Classificações Protegidas, na medida permitida pela legislação vigente, como seu gênero, raça e origem étnica; • Informações Profissionais ou Relacionadas a Emprego, como seu currículo ou CV, experiência ou histórico profissional, qualificação profissional, cargo para o qual gostaria de candidatar-se, referências profissionais, seu salário atual, bônus, expectativa salarial ou qualquer outra informação que opte por fornecer, incluindo informações relativas a quaisquer candidaturas anteriores que você possa ter-nos enviado ou qualquer experiência prévia de trabalho com a Avient, afiliações ou associações profissionais e preferência de data de início; • Informações Educacionais, como formação acadêmica, seus históricos escolares, histórico acadêmico e de capacitação, sua proficiência em inglês, a qual pode ser necessária para determinados cargos, competências linguísticas e outras competências especiais, informações de certificação; e • Outras informações pessoais que você opte por nos enviar em conexão com a sua candidatura, como dados de contato de referências, informações divulgadas em uma entrevista ou a sua situação pessoal. Data de entrada em vigor: 1º de agosto de 2020 mailto:PRIVACY.OFFICER@AVIENT.COM https://privacyportal.onetrust.com/webform/b25cf7b1-a93a-4d26-8c84-ceda4d0ae91b/e180cbe4-d1b9-49bd-b621-cb5f6a0f42cb mailto:PRIVACY.OFFICER@AVIENT.COM