Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. GUIDANCE $800 $754 $128 $123 Sales Adjusted EBITDA $0.56 $0.57 Adjusted EPS 9 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 10 2023 G U I DAN CE Q4 2023 GUIDANCE VS.

A schematic diagram of this test procedure is shown in figure 1. Figure 1: Schematic diagram of peel adhesion testing. Table 1: Physical properties of developed overmold compounds.

Mỗi luật có một cách tiếp cận khác nhau và tất cả tạo thành nền tảng của các luật chống độc quyền của Hoa Kỳ và là nền tảng cho nhiều luật toàn cầu. 1. Các l ĩnh vực quan ngại t iềm ẩn về chống độc quyền 1. Liên hệ ngay với Phòng Pháp chế của Avient và ghi lại sự việc. 10 Bắc Mỹ Trụ sở chính Avon Lake, Hoa Kỳ 33587 Walker Road Avon Lake, OH, Hoa Kỳ 44012 Số điện thoại miễn phí: +1 866 765 9663 Điện thoại: +1 440 930 1000 Fax: +1 440 930 3064 Châu Á Thái Bình Dương Trụ sở Khu vực Thượng Hải, Trung Quốc 2F, Block C 200 Đường Jinsu Phố Đông, 201206 Thượng Hải, Trung Quốc Điện thoại: +86 (0) 21 6028 4888 Fax: +86 (0) 21 6028 4999 Nam Mỹ Trụ sở Khu vực Sao Paulo, Brazil Av.

KODEKS POSTĘPOWANIA | 4 NASZ KODEKS SZACUNEK DLA UCZCIWOŚĆ W DZIAŁALNOŚCI SPOŁECZNA ODPOWIEDZIALNOŚĆ mailto:https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html? Należy kierować się następującymi dwoma prostymi zasadami: 1. avient.ethicspoint.com 1-877-228-5410 (USA).

请遵 守两个简单准则： 1. 行为准则》 | 24 mailto:https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html? 行为准则》 | 30 http://avient.ethicspoint.com http:// avient.ethicspoint.com http://avient.ethicspoint.com 北美 全球总部，美国 Avon Lake 33587 Walker Road Avon Lake, OH, United States 44012 免费电话：+1 866 765 9663 电话：+1 440 930 1000 传真：+1 440 930 3064 亚太地区 地区总部，中国上海 金苏路 200 号 C 幢 2 楼 中国上海浦东，邮编 201206 电话：+86 (0) 21 6028 4888 传真：+86 (0) 21 6028 4999 南美 地区总部，巴西圣保罗 Av.

BARREL TEMPERATURES ENGLISH (°F) METRIC (°C) COMMENTS Zone 1 - Rear 420° F 460° F 216° C 238° C Long residence times are not advised. Screw Speed Low–moderate Injection Velocity 1–3 inch per second Back Pressure Low–moderate Pack Pressure 60–80% of max injection pressure Hold Pressure 40–60% of max injection pressure Cool Time 10–30 seconds (depends on part geometry and dimensional stability) Residence Time Long residence times are not advised 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

Selected for their strong performance and durability, phthalates are the most commonly used plasticizers in the world.1 In recent years, concerns have been raised over the use of phthalates, giving rise to myths and unfounded speculation. PHTHALATES FACTS PHTHALATES ARE KNOWN TO BREAK DOWN IN THE HUMAN BODY Research has shown that after entering the body, phthalate are broken down into metabolites within minutes and pass out quickly in urine.2 PHTHALATE EXPOSURE IS CONSIDERED LOW Despite the fact that phthalates are used in a wide range of products, human exposure from all sources is considered to be extremely low.2 PHTHALATES ARE A USEFUL CHOICE FOR HEALTHCARE Flexible vinyl tubing does not react with most medications, allowing for reliable administration of drugs, while flexible vinyl bags prevent blood contamination and extend shelf life of the blood.3 PHTHALATES ARE REGULATED Based on earlier studies, a few specific phthalates have been banned for use in toys or other items for sale to children under twelve to reduce risk of overexposure through hand-to- mouth behaviors. 1 Source: chemicalsafetyfacts.org 2 Source: Centers for Disease Control and Prevention 3 Source: thisisplastics.com www.avient.com Copyright © 2020, Avient Corporation.

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 +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. Rose Vice President, Marketing and Communications +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

BARREL TEMPERATURES ENGLISH (°F) METRIC (°C) COMMENTS Zone 1 - Rear 410°F 450°F 210°C 230°C If smoking starts to occur, purge machine immediately and reduce mold and barrel temperatures. DRYING CONDITIONS ENGLISH (°F) METRIC (°C) Temperature 180°F 80°C Duration 2–4 Hours Moisture Level Allowable 0.05%–0.20% PROCESSING Screw Speed Typical screw speeds are recommended Injection Velocity 1–3 inch per second Back Pressure Lower back pressure is recommended Pack Pressure 60–80% of max injection pressure Hold Pressure 40–60% of max injection pressure Cool Time 10–30 seconds (depends on part geometry and dimensional stability) Residence Time Longer residence times are not advised 1.844.4AVIENT www.avient.com Copyright © 2021, Avient Corporation.

Annecy - 28/04/2021 - 12:37:12 page 1/2 Extrait Kbis EXTRAIT D'IMMATRICULATION PRINCIPALE AU REGISTRE DU COMMERCE ET DES SOCIETES à jour au 28 avril 2021 IDENTIFICATION DE LA PERSONNE MORALE Immatriculation au RCS, numéro 483 912 812 R.C.S. Durée de la personne morale Jusqu'au 01/09/2104 Date de clôture de l'exercice social 31 décembre GESTION, DIRECTION, ADMINISTRATION, CONTROLE, ASSOCIES OU MEMBRES Président Nom, prénoms MERKLEIN Robert Date et lieu de naissance Le 03/05/1964 à Kelkheim (Allemagne) Domicile personnel Rheinfelden Schiffackerweg 2 4310 Suisse (Suisse) Directeur général Nom, prénoms VETTER Alexander Helmut Date et lieu de naissance Le 04/07/1968 à Augsburg (Allemagne) Domicile personnel Beinwilerstrasse 20A 4083 Bale (Suisse) Ayant pouvoir d'engager seul la société Directeur général Nom, prénoms TAMURA Mauricio Date et lieu de naissance Le 27/01/1971 à Sao Paulo (Brésil) Domicile personnel Birsfelden/BL Liestalerstrasse 1 4127 Suisse (Suisse) Ayant pouvoir d'engager seul la société Commissaire aux comptes titulaire Dénomination PRICEWATERHOUSECOOPERS AUDIT Forme juridique Société par actions simplifiée Adresse 63 Rue de Villiers 92200 Neuilly-sur-Seine Immatriculation au RCS, numéro 672 006 483 RCS Nanterre RENSEIGNEMENTS RELATIFS A L'ACTIVITE ET A L'ETABLISSEMENT PRINCIPAL Adresse de l'établissement 1995 Route De la Vallée du Giffre 74490 Saint-Jeoire Activité(s) exercée(s) Recherche - développement - achat - fabrication - transformation - vente de toutes matières premières - matériels à usage industriel et particulièrement Greffe du Tribunal de Commerce d'Annecy 19 Avenue du Parmelan BP 70259 74007 ANNECY Cedex N° de gestion 2008B80041 R.C.S.