We are Avient. 4 B ET T E R TO G E TH E R : P O LYO NE A N D C L A R I A N T M A S T ER BATC H Key Data 2020 PF Sales (1) $3.7 billion 2020 PF EBITDA (1) $425 million ($500M w/synergies) Free Cash Flow $240 million (1) Estimated Pro forma for the acquisition of the Clariant Masterbatch business 87% of EBITDA from specialty applications U.S. & Canada 49% Europe 25% Asia 17% Latin America 9% SEGMENT, END MARKET AND GEOGRAPHY 5 GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 21%Industrial 15% Wire & Cable 7% Building & Construction 6% Electrical & Electronics 4% END MARKET REVENUE Transportation 9% Healthcare 15% All data reflects 2020 estimate and Pro forma for acquisition of the Clariant Masterbatch business. (1) The total company sales and EBITDA of $3,650M and $425M, respectively, include intercompany sales eliminations and corporate costs $2,000M $310M $685M $115M $1,050M $65M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $425M$3,650M (1) Innovation is the lifeblood of a specialty company. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 18 1. Such is the case with the Clariant Masterbatch acquisition, where strong free cash flow will allow us to de-lever quickly. 19 AV I E N T I S M O D E S T LY L EV ER ED 1.

Committees: 1, 2 GREGORY J. Committees: 1, 3 KERRY J. Committees: 1, 2 COMMITTEES 1.

To access Avient’s news library online, please visit www.avient.com/news # # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com https://www.avient.com/news 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Sales $ 823.3 $ 818.0 $ 2,606.5 $ 2,508.5 Operating Income 40.6 52.8 242.9 229.6 Net (loss) income from continuing operations attributable to Avient shareholders (27.4) 33.7 99.8 143.3 Basic (loss) earnings per share from continuing operations attributable to Avient shareholders $ (0.30) $ 0.37 $ 1.09 $ 1.57 Diluted (loss) earnings per share from continuing operations attributable to Avient shareholders $ (0.30) $ 0.37 $ 1.08 $ 1.56 Senior management uses comparisons of adjusted net income attributable to Avient shareholders and diluted adjusted earnings per share (EPS) attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Three Months Ended September 30, 2022 2021 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results (Loss) income from continuing operations before income taxes $ (29.0) $ 82.0 $ 53.0 $ 35.4 $ 19.9 $ 55.3 Income tax expense - GAAP 1.2 — 1.2 (2.0) — (2.0) Income tax impact of special items (Attachment 3) — (20.5) (20.5) — (4.6) (4.6) Tax adjustments (Attachment 3) — 6.8 6.8 — (3.6) (3.6) Income tax (expense) benefit $ 1.2 $ (13.7) $ (12.5) $ (2.0) $ (8.2) $ (10.2) Effective Tax Rate(1) 4.1 % 23.7 % 5.7 % 18.4 % (1) Rates may not recalculate from figures presented herein due to rounding 14 Nine Months Ended September 30, 2022 2021 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results Income from continuing operations before income taxes $141.2 $ 89.6 $ 230.8 $176.1 $ 36.5 $ 212.6 Income tax expense - GAAP (41.5) — (41.5) (32.1) — (32.1) Income tax impact of special items (Attachment 3) — (22.5) (22.5) — (8.9) (8.9) Tax adjustments (Attachment 3) — 10.8 10.8 — (1.6) (1.6) Income tax (expense) benefit $ (41.5) $ (11.7) $ (53.2) $ (32.1) $ (10.5) $ (42.6) Effective Tax Rate(1) 29.4 % 23.1 % 18.2 % 20.0 % (1) Rates may not recalculate from figures presented herein due to rounding Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2022 2021 2022 2021 Net (loss) income from continuing operations – GAAP $ (27.8) $ 33.4 $ 99.7 $ 144.0 Income tax (benefit) expense (1.2) 2.0 41.5 32.1 Interest expense 37.3 19.0 70.4 57.8 Depreciation and amortization from continuing operations 39.8 36.6 113.7 107.1 EBITDA $ 48.1 $ 91.0 $ 325.3 $ 341.0 Special items, before tax 82.0 19.9 89.6 36.5 Interest expense included in special items (10.0) — (10.0) — Depreciation and amortization included in special items (0.8) (0.9) (4.0) (0.1) Adjusted EBITDA $ 119.3 $ 110.0 $ 400.9 $ 377.4 NEWS RELEASE Attachment 1

NIIF Plenas UBICACIÓN Dirección del domicilio principal: Aut Medellin Km 2.5 Via Parcelas 1 Km Municipio: Cota (Cundinamarca) Correo electrónico: andres.perez@clariant.com Teléfono comercial 1: 8773300 Teléfono comercial 2: No reportó. Dirección para notificación judicial: Aut Medellin Km 2.5 Via Parcelas 1 Km Municipio: Cota (Cundinamarca) Correo electrónico de notificación: esperanza.laserna@avient.com Teléfono para notificación 1: 8773300 Teléfono para notificación 2: No reportó. OBJETO SOCIAL Objeto Social: El objeto social de la sociedad será: 1.

Jurong, Singapore 1. HAPs: 6.77 MT Metrics—Planet Metrics Page 77 Energy Management (1) Total energy consumed, (2) percentage grid electricity, (3) percentage renewable, (4) total self-generated energy RT-CH-130a.1 1. Workforce Health & Safety (1) Total recordable incident rate (TRIR) and (2) fatality rate for (a) direct employees and (b) contract employees RT-CH-320a.1 1.

Jurong, Singapore 1. HAPs: 6.77 MT Metrics—Planet Metrics Page 77 Energy Management (1) Total energy consumed, (2) percentage grid electricity, (3) percentage renewable, (4) total self-generated energy RT-CH-130a.1 1. Workforce Health & Safety (1) Total recordable incident rate (TRIR) and (2) fatality rate for (a) direct employees and (b) contract employees RT-CH-320a.1 1.

Handelsregister B des Amtsgerichts Mannheim Nummer der Firma: Seite 1 von 4 HRB 521568 Nummer der Eintragung a) Firma b) Sitz, Niederlassung, inländische Geschäftsanschrift, empfangsberechtigte Person, Zweigniederlassungen c) Gegenstand des Unternehmens Grund- oder Stammkapital a) Allgemeine Vertretungsregelung b) Vorstand, Leitungsorgan, geschäftsführende Direktoren, persönlich haftende Gesellschafter, Geschäftsführer, Vertretungsberechtigte und besondere Vertretungsbefugnis Prokura a) Rechtsform, Beginn, Satzung oder Gesellschaftsvertrag b) Sonstige Rechtsverhältnisse a) Tag der Eintragung b) Bemerkungen 1 2 3 4 5 6 7 1 a) PolyOne Th. a) 02.02.2017 Rinke 9 b) Berichtigung von Amts wegen zur Geschäftsanschrift: Adolf-Dambach-Str. 2, 76571 Gaggenau a) 06.06.2018 Rinke 10 b) Bestellt als Geschäftsführer: a) 25.03.2019 Rinke Abruf vom 08.11.2021 19:52 Handelsregister B des Amtsgerichts Mannheim Nummer der Firma: Seite 4 von 4 HRB 521568 Nummer der Eintragung a) Firma b) Sitz, Niederlassung, inländische Geschäftsanschrift, empfangsberechtigte Person, Zweigniederlassungen c) Gegenstand des Unternehmens Grund- oder Stammkapital a) Allgemeine Vertretungsregelung b) Vorstand, Leitungsorgan, geschäftsführende Direktoren, persönlich haftende Gesellschafter, Geschäftsführer, Vertretungsberechtigte und besondere Vertretungsbefugnis Prokura a) Rechtsform, Beginn, Satzung oder Gesellschaftsvertrag b) Sonstige Rechtsverhältnisse a) Tag der Eintragung b) Bemerkungen 1 2 3 4 5 6 7 Potoczny, Zaneta Gabriela, Mersch / Luxemburg, *17.10.1974 mit der Befugnis, im Namen der Gesellschaft mit sich im eigenen Namen oder als Vertreter eines Dritten Rechtsgeschäfte abzuschließen. Bergmann GmbH a) Die Gesellschafterversammlung vom 21.10.2021 hat die Änderung des Gesellschaftsvertrages in § 1 (Firma und Sitz) beschlossen.

Identifier Risk 1 Where in the value chain does the risk driver occur? This was multiplied by Avient's total scope 1 emissions to identify Lego's contribution. This was multiplied by Avient's total scope 1 emissions to identify HP's contribution.

McAlindon(1) Former Senior Vice President, President of Designed Structures and Solutions (1) Ms. 1) Mr. The agreement provides that if (1) Mr.

ECert - 2023-11-22T151036.517.pdf Page 1 of 10 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. All rights reserved. 65537Certificate No: Facility: Avient Corporation - Cota, Colombia Autopista Medellín Km 2.5, Via Parcelas Km 1 Vereda Siberia Cota, Cundinamarca 250017 Colombia Facility: Avient Corporation - Gebze, Turkey Ihsan Dede Cad. Mariana Langiewicza 50 Lódzkie Konstantynow 95-050 Poland Activity: Design & Manufacture of Color, Additive Concentrate & Specialty Compounds Activity: Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds 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, Thermoplastic Resins and Specialty Compounds 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 ABS Quality Evaluations Avient Corporation ISO 14001:2015 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation.