Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 10.8 16.1 15.5 14.1 14.0 10.3 21.0 19.0 14.3 12.1 11.8 11.7 11.5 9.7 11 21 23 PM AV FM Avient Historic Multiple Avient Specialty Other Specialty / AP P E N DI X 30 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 BILLION US & Canada 34% 38% END MARKET REGION 33 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 BILLION US & Canada 52% 35% 34 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 35 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars 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. Three Months Ended September 30, 2023 Three Months Ended September 30, 2022 Reconciliation to Condensed Consolidated Statements of Income: $ EPS $ EPS Net income (loss) from continuing operations attributable to Avient shareholders $ 5.1 $ 0.06 $ (27.4) $ (0.30) Special items, after tax 32.0 0.35 68.3 0.75 Amortization expense, after-tax 15.2 0.16 $ 13.4 $ 0.14 Adjusted net income / EPS $ 52.3 $ 0.57 $ 54.3 $ 0.59 September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Sales - GAAP $ 753.7 $ 823.3 Pro Forma APM adjustments — 60.7 Pro forma adjusted sales $ 753.7 $ 884.0 Net income from continuing operations – GAAP $ 5.1 $ (27.8) Income tax (benefit) expense (0.1) (1.2) Interest expense, net 30.3 37.3 Depreciation and amortization 46.4 39.8 EBITDA from continuing operations $ 81.7 $ 48.1 Special items, before tax 43.2 82.0 Interest expense included in special items (2.2) (10.0) Depreciation and amortization included in special items — (0.8) Adjusted EBITDA $ 122.7 $ 119.3 Pro forma APM adjustments — 17.2 Pro forma adjusted EBITDA $ 122.7 $ 136.5 Pro forma adjusted EBITDA as a % of sales 16.3 % 15.4 % 1 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense, net 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA from continuing operations $ 283.4 $ 351.5 Special items, before tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 Adjusted EBITDA as a % of sales 5.4 % 11.5 % Reconciliation to EBITDA and Adjusted EBITDA: December 31, 2022 Net loss from continuing operations – GAAP $ (16.6) Income tax benefit (60.8) Interest expense, net 49.4 Depreciation and amortization 48.6 EBITDA from continuing operations $ 20.6 Special items, before tax 104.3 Interest expense included in special items (16.0) Depreciation and amortization included in special items (1.5) Adjusted EBITDA $ 107.4 Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended December 31, 2022 Net loss from continuing operations attributable to Avient shareholders $ (17.0) Special items, after tax 38.3 Amortization expense, after-tax 14.6 Adjusted net income from continuing operations excluding special items 35.9 Pro forma adjustments* 2.5 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 Weighted average diluted shares 91.7 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 * 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. 2 AVNT January IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition What we do: We are a formulator Slide Number 7 Avient protective materials �First Year Slide Number 9 Slide Number 10 Slide Number 11 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 Slide Number 23 Slide Number 24 Slide Number 25 Avient is asset light Free cash flow conversion Multiple expansion Slide Number 29 Slide Number 30 Slide Number 31 2022 pro forma segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 35 IR Deck - AVNT-2023.09.30 Non GAAP Recs.pdf Attachment

Chemical bonding such as Hydrogen Bonding) =Overmold =Substrate Figure 4: Mechanisms of bonding between TPE and rigid substrate Page 11 July 19, 2007 Figure 5: Schematic diagram of peel adhesion testing. Figure 11: TPE Overmold offers soft grip in handle applications in personal care Appliances: Ergonomic, soft touch grips and other surfaces as well as differentiable aesthetics drive the expanding need for overmolded TPEs in the appliance segment.

O desempenho do Produto depende da sua correta utilização, manipulação e acondicionamento. 11. Seller shall not be subject to any liability or damages for delay in performance or non-performance as a result of fire, flood, ice, natural catastrophe, pandemic, strike, lockout, labor shortage, labor dispute or trouble, accident, riot, act of governmental authority, act of God, war, act of terrorism (including cyberterrorism and ransomware attacks), or other contingencies and/or circumstances beyond its reasonable control interfering with the production, supply, transportation, or consumption of the Products or with the supply of any raw materials used in connection therewith, or the inability of Seller to purchase raw materials at a commercially reasonable price, or if performance would be contrary to, or constitute a violation of, any regulation, law, or requirement of a recognized government authority, and quantities so affected may be eliminated by Seller from 11.

Avon Lake, Ohio 11. Gazientep, Turkey 11. Our Board consists of 12 Directors, 11 of whom are independent, and who each bring a unique set of qualifications pertaining to corporate governance and Avient’s business.

Avon Lake, Ohio 11. Gazientep, Turkey 11. Our Board consists of 12 Directors, 11 of whom are independent, and who each bring a unique set of qualifications pertaining to corporate governance and Avient’s business.

Figure 11 illustrates an example design of a runner keeper.

José Garibaldi 2401 Lomas de Zamora, Buenos Aires 1832 Argentina Activity: Management of QMS, Design and manufacture of colour and additive concentrates, thermoplastic resins and specialty compounds Activity: Administration, Site management, Manufacture, Laboratory (QC and Colormatching), Procurement, Maintenance, Infrastructure, Warehouse and Transport, Sales Page 3 of 10 Facility: Avient Colorants France S.A.S. 1995 route de la Vallée du Giffre Saint-Jeoire en Faucigny 74490 France Facility: Avient Colorants Germany GmbH Kornkamp 50 Ahrensburg, Thuringia 22926 Germany Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Facility: Avient Colorants Germany GmbH Hohenrhein 1 Lahnstein, Thuringia 56112 Germany Facility: Avient Guatemala S.A. 27 Avenida 34–11, Zona 12 Parque Global 1012 Guatemala Activity: Administration, Site management, Manufacture, Laboratory, Maintenance, Infrastructure, Warehouse and Transport Activity: Administration, Site management, Manufacture, Laboratory, Procurement, Maintenance, Infrastructure, Warehouse and Facility: Avient (Chile) SpA Camino a Melipilla 15170 Maipú, Región Metropolitana de Santiago 9250000 Chile Facility: Avient Colombia S.A.S.

Seller has no liability for the failure of discharge or unloading equipment or materials used by Buyer, whether or not supplied by Seller. 11.

مدونة قواعد السلوك الخاصة بنا 2023 جدول المحتويات 1 رسالة من المدير التنفيذي 2 رؤيتنا واستراتيجيتنا 2 القيم الأساسية والشخصية مدونة قواعد سلوكنا 4 المبادئ التوجيهية للسلوك الأخلاقي 4 القيم الشخصية 6 حل المسائل والإبلاغ عن حالات عدم الامتثال 6 الخط الساخن للأخلاقيات 6 عدم الانتقام 6 تطبيق مدونة قواعد السلوك 6 مخالفات مدونة قواعد السلوك الاحترام للجميع 8 التنوع والدمج 8 التمييز أو المضايقات 8 العلاقات في مكان العمل 9 إدمان المخدرات 9 الأمان المادي والعنف في مكان العمل الأمانة في العمل 11 المعلومات، والبيانات، والسجلات الدقيقة 11 نزاهة المحاسبة 13 اتصالات الشركة 13 حماية الأصول واستخدامها 13 حقوق الملكية وسرية المعلومات، والأفكار والملكية الفكرية 13 حماية الخصوصية، والمعلومات الشخصية، والبيانات 14 استخدام شبكة الإنترنت والبريد الإلكتروني 14 وسائل التواصل الاجتماعي والشبكات الاجتماعية 14 المعلومات الداخلية والتداول 15 المساهمات والأنشطة السياسية/والمساهمات الخيرية 15 التحقيقات والاستفسارات الحكومية النزاهة في عملنا 17 التعامل العادل 17 الرشاوى والعمولات 18 الوكلاء والمستشارون 18 المنافسة 18 الهدايا والاستضافة 19 تضارب المصالح 19 تعامل ذاتي تتنافر فيه المصلحة والواجب 19 التجارة الدولية المسؤولية الاجتماعية بالشركة 21 الاستدامة 21 السلامة، والصحة، والبيئة 21 سلامة المنتج والخدمة 21 احترام حقوق الإنسان 22 التزام مشترك 23 موارد ومعلومات الاتصال 1 جدول المحتويات رسالة من المدير التنفيذي ،Avient السادة موظفي نظراً لأننا جزء من شركة عالمية متنامية، فإننا نواجه مواقف صعبة وعمليات صنع قرار معقّدة. ونحن نعتبر أنفسنا مسؤولين - تجاه بعضنا البعض وتجاه أصحاب المصلحة - عن أفعالنا ونتائجها ونتحمل المسؤولية الشخصية عنها. 11 جدول المحتويات المعلومات، والبيانات، والسجلات الدقيقة تعُد السجلات الكاملة والدقيقة والموثوق بها ضرورية لاتخاذ قرارات سليمة وتنفيذ عمليات فعالة. تايقالخألل نخاسلا طخلا https://www.Avient.com/company/policies-and-governance/ethics-hotline :تايقالخألل نخاسلا طخلا فتاه مقر 1-877-228-5410 https://www.Avient.com/company/policies-and-governance/ethics-hotline أمريكا الشمالية المقر العالمي آفون ليك، الولايات المتحدة الأمريكية ووكر رود آفون ليك، أوهايو ، الولايات 33587 المتحدة 44012 الخط المجاني: 9663 765 866 1+ الهاتف: 1000 930 440 1+ الفاكس:3064 930 440 1+ آسيا والمحيط الهادئ المقر الإقليمي بشنغهاي الصين ف، بلوك سي 200 جينسو رود بودونغ، 2،201206 شنغهاي، الصين الهاتف: 4888 6028 21 (0) 86+ الفاكس: 4999 6028 21 (0) 86+ أمريكا الجنوبية المقر الإقليمي ساو باولو ، البرازيل جادة فرانسيسكو ناكاساتو، 1700 إتوبيفا، ساو باولو، البرازيل 000- 13295 الهاتف: 9200 4593 11 55+ أوروبا المقر الإقليمي بومرلوتش، لوكسمبورغ ،طريق باستون بومرلوتش، لوكسمبورغ 19 L-9638 الهاتف: 35 050 269 352+ الفاكس: 45 050 269 352+ www.avient.com https://www.avient.com

Pamplona, Spain 11. Hatfield, Pennsylvania 11. ITEM 11.