A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income (loss) from continuing operations attributable to Avient shareholders $ 27.8 $ 0.30 $ (17.0) $ (0.19) Special items, after tax (Attachment 3) 5.4 0.06 38.3 0.42 Amortization expense, after-tax 15.0 0.16 14.6 0.16 Adjusted net income / EPS $ 48.2 $ 0.52 $ 35.9 $ 0.39 (1) Per share amounts may not recalculate from figures presented herein due to rounding 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 $ 82.8 $ 0.90 Special items, after tax (Attachment 3) 79.3 0.86 116.2 1.26 Amortization expense, after-tax 61.5 0.67 49.0 0.53 Adjusted net income / EPS $ 216.6 $ 2.36 $ 248.0 $ 2.69 (1) Per share amounts may not recalculate from figures presented herein due to rounding 1 Reconciliation to EBITDA and Pro Forma Adjusted EBITDA 2023 2022 2023 2022 Sales - GAAP $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Pro forma APM adjustments — — — 256.1 Pro forma adjusted sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,653.0 Net income (loss) from continuing operations – GAAP $ 27.6 $ (16.6) $ 76.3 $ 83.1 Income tax (benefit) expense (7.0) (60.8) 11.0 (19.3) Interest expense 26.8 49.4 115.3 119.8 Depreciation and amortization from continuing operations 44.2 48.6 188.8 162.5 EBITDA from continuing operations $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items, before tax 22.4 104.3 114.6 194.0 Interest expense included in special items (0.1) (16.0) (2.3) (26.0) Depreciation and amortization included in special items — (1.5) (1.9) (5.5) Adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 Pro forma adjusted EBITDA as a percent of sales 15.8 % 13.6 % 16.0 % 16.2 % * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). Three Months Ended Year Ended Reconciliation of Pro Forma Adjusted Earnings per Share December 31, 2022 Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ 82.8 Special items, after tax 38.3 116.2 Amortization expense, after-tax 14.6 49.0 Adjusted net income from continuing operations excluding special items 35.9 248.0 Pro forma adjustments* 2.5 13.6 APM pro forma amortization expense, after-tax* — 19.1 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 $ 280.7 Weighted average diluted shares 91.7 92.2 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 $ 3.04 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. Three Months Ended Year Ended 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 Other expense, net: $ 4.3 $ (28.4) $ 5.8 $ (59.7) Depreciation & amortization: Color, Additives and Inks $ 22.2 $ 25.2 $ 98.3 $ 101.3 Specialty Engineered Materials 19.8 20.3 81.5 48.7 Corporate 2.2 3.1 9.0 12.5 Depreciation & amortization $ 44.2 $ 48.6 $ 188.8 $ 162.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 84.0 $ 69.5 $ 358.2 $ 402.3 Specialty Engineered Materials 49.2 55.5 224.0 188.8 Corporate (45.9) (76.0) (196.6) (185.3) Other expense, net $ 4.3 $ (28.4) $ 5.8 $ (59.7) EBITDA $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items in EBITDA 22.3 86.8 110.4 162.5 EBITDA - excluding special items $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). 3 AVNT February IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition Slide Number 6 Slide Number 7 Portfolio transformation Slide Number 9 END MARKET observations�(% of company sales) Regional observations�(% of company sales) Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 2023 segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 26 AVNT Q4 2023 Earnings Presentation.pdf AVNT Q4 2023 Earnings Presentation_For Website_with Non-GAAP.pdf IR Deck - AVNT-2023.12.31 (2.12.24 9PM Milestone February 12 0905 pm).pdf Attachment

Dessa lagar återspeglar övertygelsen om att konkurrenskraftiga marknader tillhandahåller de bästa produkterna och tjänsterna till de lägsta priserna för konsumenterna. Dessutom har de flesta andra länder sina egna antitrust- eller konkurrenslagar. De antitrustproblem som tas upp i denna policy gäller generellt de flesta antitrust- och konkurrensrelaterade lagar runtom i världen.

OnFlex - Interior Trays - Spanish PROVEEDOR TIER 2 B A N D E J A S I N T E R I O R E S • Un material con bajo FOG y olor bajo • Acabado semi-mate • Facilidad de procesamiento • Permitió un procesamiento más sencillo que el existente TPE-V • Se eliminó el paso de pre-secado y el material se entregó pre-coloreado, lo que mejoró la eficiencia del proceso • Cumple con las necesidades de bajo FOG (≤2 mg) y poco olor (≤3.0), con acabado semi-mate OnFlex™ S EH 80A-3S7005 REQUERIMIENTOS CLAVE SOLUCIÓN AVIENT CUMPLE CON LAS NORMAS VIAQ MÁS INFORMACIÓN Copyright © 2020, Avient Corporation.

Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. We then de-lever back below 3.0x within two years. Such is the case with the Clariant Masterbatch acquisition, where strong free cash flow will allow us to de-lever quickly. 19 AVIENT IS MODESTLY LEVERED 1.

Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. We then de-lever back below 3.0x within two years. Such is the case with the Clariant Masterbatch acquisition, where strong free cash flow will allow us to de-lever quickly. 19 AVIENT IS MODESTLY LEVERED 1.

Politique mondiale de lutte contre la corruption d’Avient Date de publication : 1er juillet 2020 Table des matières Notre Politique mondiale de lutte contre la corruption 1 Importance de la conformité 1 Notre responsabilité 1 Qu’est-ce qu’un pot-de-vin ? Les pots-de-vin peuvent comprendre : • des espèces et des quasi-espèces (cartes-cadeaux ou chèques-cadeaux); • des cadeaux, des divertissements, des marques d’hospitalité lorsqu’il n’y a pas d’objectif commercial clair ou lorsqu’ils dépassent les besoins commerciaux raisonnables de l’entreprise; • le paiement de frais de déplacement ou l’offre de vacances; • le fait de payer un représentant du gouvernement afin qu’il ignore une exigence douanière applicable ou qu’il accélère un remboursement d’impôt; • des services, des faveurs, des prêts personnels; • des offres d’emploi ou d’autres avantages à un membre de la famille ou à un ami de la personne; • des contributions à des partis politiques et des candidats; • des dons de bienfaisance et des commandites. Dans certaines situations, le fait d’éviter des paiements de facilitation ou des dessous-de-table pourrait mettre en danger la sécurité personnelle de nos associés (ou de leur famille).

Reciprocal Dealing—Any agreement with a customer that says, “I will buy from you provided that you buy from me Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Telephone: +55 11 4593 9200 Europe Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Telephone: +352 269 050 35 Fax: +352 269 050 45 www.avient.com http://www.avient.com Quick Reference: Antitrust DO’s and DON’Ts Antitrust Checklist Protection from Retaliation Avient Ethics Hotline Conclusion Antitrust Potential Areas of Concern Antitrust Law Violations An Overview of U.S.

Aviente no participa en prácticas automatizadas de toma de decisiones ni de elaboración de perfiles. Los datos de contacto de las autoridades de protección de datos están disponibles aquí. Fecha de entrada en vigor: 1 de agosto de 2020

La mise en œuvre de ces normes en termes de performance des fournisseurs est importante pour nous, et nous attendons de nos fournisseurs et partenaires commerciaux qu’ils communiquent ces attentes tout au long de leur chaîne d’approvisionnement en adoptant des systèmes de gestion, des politiques, des procédures et une formation efficaces pour respecter les normes et les attentes énoncées dans ce code de conduite des fournisseurs au sein de leurs opérations commerciales. S’abstenir d’offrir de l’argent, des prêts, des crédits, des remises préjudiciables, des cadeaux, des produits ou des services à des collaborateurs d’Avient pour leur usage ou leur avantage personnel. Éviter les conflits d’intérêts qui impliquent des relations commerciales avec des membres de la famille et des amis personnels proches chez Avient.