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.

Vår uppförandekod 2023 Meddelande från CEO 1 Vår vision och strategi 2 Kärnvärderingar och personliga värderingar 2 Vägledning för etiskt uppförande 4 Personliga värderingar 4 Att hantera frågor och rapportera situationer som överträder efterlevnad 6 Etik – het linje 6 Inga repressalier 6 Tillämpning av uppförandekoden 7 Överträdelser av koden 7 Respekt för alla Mångfald och social integration 9 Diskriminering eller trakasserier 9 Relationer på arbetsplatsen 9 Substansmissbruk 10 Fysisk säkerhet och våld på arbetsplatsen 10 Korrekt information, data och register 12 Bokföringsintegritet 12 Bolagets kommunikationer 14 Skyddande och användning av tillgångar 14 Äganderättsskyddad och konfidentiell information, idéer och immateriella rättigheter 14 Integritet, skydd av personlig information och data 15 Internet- och E-postanvändning 15 Sociala Media och Sociala Nätverk 15 Datasäkerhet, licensiering av programvara och copyrights 16 Insiderinformation och aktiehandel 16 Politiska bidrag/aktiviteter och donationer för välgörande ändamål 17 Myndigheters undersökningar och förfrågningar 17 Rättvisa affärer 19 Mutor och kickbacks 19 Agenter och konsulter 20 Konkurrens 20 Gåvor och annan gästfrihet 20 Intressekonflikter 21 Egen företagsamhet 22 Internationell handel 22 Hållbarhet 24 Säkerhet, hälsa och miljö 24 Produkt- och servicesäkerhet 25 Respekt för mänskliga rättigheter 25 Ett delat åtagande 25 Resurser och kontaktinformation 26 1 Meddelande från CEO Bästa Avient-medarbetare, Som del i ett växande, globalt företag ställs vi ständigt inför nya utmaningar och komplicerat beslutsfattande.

Náš Kodex chování 2023 Zpráva od generálního ředitele 1 Naše vize a strategie 2 Klíčové a osobní hodnoty 2 Náš Kodex chování Pokyny pro etické chování 4 Osobní hodnoty 4 Řešení otázek a hlášení nedodržování předpisů 6 Horká linka pro etiku 6 Žádná odvetná opatření 6 Uplatňování Kodexu chování 7 Porušení Kodexu 7 Respekt vůči všem Diverzita a inkluze 9 Diskriminace nebo obtěžování 9 Vztahy na pracovišti 9 Užívání návykových látek 10 Fyzické bezpečí a násilí na pracovišti 10 Poctivost na pracovišti Přesné informace, data a záznamy 12 Účetní integrita 12 Firemní komunikace 14 Zabezpečení a používání majetku 14 Vlastnické a důvěrné informace, nápady a duševní vlastnictví 14 Soukromí, osobní údaje a ochrana údajů 15 Používání internetu a e-mailů 15 Sociální média a sdružování na sociálních sítích 16 Bezpečnost počítačů, licence na software a autorská práva 16 Informace a obchodování zasvěcených osob 16 Politické příspěvky/aktivity a charitativní příspěvky 17 Vládní vyšetřování a dotazy 17 Integrita při našem podnikání Spravedlivé jednání 19 Úplatky a nelegální provize 19 Zástupci a konzultanti 20 Spravedlivá soutěž 20 Dary a pohoštění 20 Střety zájmů 21 Nekalé finanční transakce 22 Mezinárodní obchod 22 Společenská odpovědnost firmy Trvalá udržitelnost 24 Bezpečnost, zdraví a životní prostředí 24 Bezpečnost výrobků a služeb 25 Respektování lidských práv 25 Společný závazek 25 Zdroje informací a kontaktní údaje 26 1 Zpráva od generálního ředitele Vážení spolupracovníci ve společnosti Avient, jako součást rozrůstající se globální organizace čelíme náročným situacím a složitému rozhodování.

Unser Verhaltenskodex 2023 Eine Mitteilung des CEO 1 Unsere Vision und Strategie 2 Kern- und persönliche Werte 2 Unser Verhaltenskodex Richtlinien für ethisches Verhalten 4 Persönliche Werte 4 Fragen klären und Situationen mangelnder Compliance melden 6 Ethikhotline 6 Keine Vergeltungsmaßnahmen 6 Anwendung des Verhaltenskodex 7 Verstöße gegen den Kodex 7 Respekt für alle Diversität und Inklusion 9 Diskriminierung oder Belästigung 9 Beziehungen am Arbeitsplatz 9 Drogenmissbrauch 10 Physische Sicherheit und Gewalt am Arbeitsplatz 10 Ehrlichkeit bei der Arbeit Korrekte Informationen, Daten und Aufzeichnungen 12 Integrität der Buchführung 12 Unternehmenskommunikationen 14 Schutz und Verwendung von Vermögenswerten 14 Unternehmenseigene und vertrauliche Informationen, Ideen und geistiges Eigentum 14 Privatsphäre, Personenbezogene Daten und Datenschutz 15 Verwendung von Internet und E-Mail 15 Soziale Medien und soziales Netzwerken 15 Computersicherheit, Softwarelizenzierung und Urheberrechte 16 Insiderinformationen und -handel 16 Politische Spenden/Aktivitäten und gemeinnützige Spenden 17 Ermittlungen und Anfragen der Regierung 17 Integrität in unserem Geschäft Ehrliche Handlungsweise 19 Bestechung und Schmiergelder 19 Beauftragte und Berater 20 Wettbewerb 20 Geschenke und Bewirtung 20 Interessenkonflikte 21 Selbstkontrahierung 22 Internationaler Handel 22 Soziale Verantwortung des Unternehmens Nachhaltigkeit 24 Sicherheit, Gesundheit und die Umwelt 24 Produkt- und Dienstleistungssicherheit 25 Achtung der Menschenrechte 25 Eine gemeinsame Selbstverpflichtung 25 Ressourcen und Kontaktinformationen 26 1 Eine Mitteilung des CEO Liebe Mitarbeiter von Avient, als Teil eines wachsenden, globalen Unternehmens stehen wir schwierigen Situationen und komplexen Entscheidungsprozessen gegenüber.

Ashish Khandpur President and CEO December 18, 2023

Ashish Khandpur President and CEO December 18, 2023

Ashish Khandpur President and CEO December 18, 2023

EPS: $1.00 $0.54 $0.68 $0.30 $0.45 $0.60 $0.75 H1'12 H1'13 Adjusted EPS $101.0 $132.6 $50.0 $100.0 $150.0 H1'12 H1'13 Adjusted Operating Income (millions) +31% $68.8 $97.7 $50.0 $75.0 $100.0 H1'12 H1'13 Specialty Operating Income (millions) First Half 2013 Financial Highlights • Adjusted EPS increased 26% over prior year first half • Operating Income expanded 31% versus first half 2012 • Specialty operating income up 42% • Revenue grew 22% versus 1H ‘12 • Portfolio transformation activities  Completed acquisition of Spartech  Divested non-core Resin business +26% +42% Page 12 • Significant Debt Maturities $ 1,010 Other Debt 21 • Total Debt at 6/30/13 Less: Cash Net Debt • Available Liquidity Cash ABL Availability Total Liquidity • Net Debt / EBITDA = 1.9x* • Net Debt / EBITDA = 2.1x*(tax adjusted) $392 310 $702 $1,031 392 $639 $50 $360 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Significant Debt Maturities As of June 30, 2013 ($ millions) Page 13 Coupon Rates: 7.500% 7.375% 5.250% *Pro Forma TTM Debt Maturities & Liquidity Summary – 6/30/13 Cash Balance = $392M Net Debt / EBITDA* = 1.9x • Repurchased ~3.0M shares YTD in 2013 • 17 million shares are available for repurchase under the current authorization Share Repurchase • Introduced a quarterly dividend in Q1 2011 and increased in Q1 2012 (25%) and Q1 2013 (20%) • Objective of maintaining and growing Dividends • Expanding our sales, marketing, and technical capabilities is top priority • Investing in operational and LSS initiatives (including synergy capture) • CAPEX Organic Growth • Targets that expand our: • Specialty offering • End market presence • Geographic footprint • Synergy opportunities • Adjacent material solutions • North American manufacturing alignment Acquisitions *TTM 6/30/2013 Use of Cash Page 14 Why Invest In PolyOne? Net debt $ 638.8 Adjusted EBITDA Q3 2012 Q4 2012 Q1 2013 Q2 2013 Total PolyOne Income before income taxes $ 30.6 $ (1.1) $ 15.7 $ 62.9 $ 108.1 PolyOne Interest expense, net 12.4 13.7 15.6 16.6 58.3 PolyOne Depreciation and amortization 17.0 15.5 19.0 25.8 77.3 PolyOne Special items in EBITDA 8.3 26.5 27.7 (5.2) 57.3 PolyOne Adjusted EBITDA 68.3 54.6 78.0 100.1 301.0 Pro forma Spartech EBITDA 16.8 14.7 11.2 - 42.7 Pro forma EBITDA $ 85.1 $ 69.3 $ 89.2 $ 100.1 $ 343.7 PolyOne Investor Presentation�Jefferies 2013 Global Industrials Conference��2013年8月13日� Forward – Looking Statements Use of Non GAAP Measures Strategy and Execution Drive Results Four Pillar Strategy PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Proof of Performance & 2015 Goals Innovation Drives Earnings Growth We are Experts in Polymer Science and Formulation Positioned for Strong Growth First Half 2013 Financial Highlights Debt Maturities & Liquidity Summary – 6/30/13 Use of Cash Why Invest In PolyOne?

EPS: $1.00 $0.54 $0.68 $0.30 $0.45 $0.60 $0.75 H1'12 H1'13 Adjusted EPS $101.0 $132.6 $50.0 $100.0 $150.0 H1'12 H1'13 Adjusted Operating Income (millions) +31% $68.6 $97.7 $50.0 $75.0 $100.0 H1'12 H1'13 Specialty Operating Income (millions) First Half 2013 Financial Highlights • Adjusted EPS increased 26% over prior year first half • Operating Income expanded 31% versus first half 2012 • Specialty operating income up 42% • Revenue grew 22% versus 1H ‘12 • Portfolio transformation activities  Completed acquisition of Spartech  Divested non-core Resin business +26% +42% Page 12 • Significant Debt Maturities $ 1,010 Other Debt 21 • Total Debt at 6/30/13 Less: Cash Net Debt • Available Liquidity Cash ABL Availability Total Liquidity • Net Debt / EBITDA = 1.9x • Net Debt / EBITDA = 2.1x*(tax adjusted) $392 310 $702 $1,031 392 $639 $50 $360 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Significant Debt Maturities As of June 30, 2013 ($ millions) Page 13 Coupon Rates: 7.500% 7.375% 5.250% *Pro Forma TTM for taxes on resin gain Debt Maturities & Liquidity Summary – 6/30/13 Cash Balance = $392M Net Debt / EBITDA* = 1.9x • Repurchased ~3.0M shares YTD in 2013 • 17 million shares are available for repurchase under the current authorization Share Repurchase • Introduced a quarterly dividend in Q1 2011 and increased in Q1 2012 (25%) and Q1 2013 (20%) • Objective of maintaining and growing Dividends • Expanding our sales, marketing, and technical capabilities is top priority • Investing in operational and LSS initiatives (including synergy capture) • CAPEX Organic Growth • Targets that expand our: • Specialty offering • End market presence • Geographic footprint • Synergy opportunities • Adjacent material solutions • North American manufacturing alignment Acquisitions *TTM 6/30/2013 Use of Cash Page 14 Why Invest In PolyOne? Net debt $ 638.8 Adjusted EBITDA Q3 2012 Q4 2012 Q1 2013 Q2 2013 Total PolyOne Income before income taxes $ 30.6 $ (1.1) $ 15.7 $ 62.9 $ 108.1 PolyOne Interest expense, net 12.4 13.7 15.6 16.6 58.3 PolyOne Depreciation and amortization 17.0 15.5 19.0 25.8 77.3 PolyOne Special items in EBITDA 8.3 26.5 27.7 (5.2) 57.3 PolyOne Adjusted EBITDA 68.3 54.6 78.0 100.1 301.0 Pro forma Spartech EBITDA 16.8 14.7 11.2 - 42.7 Pro forma EBITDA $ 85.1 $ 69.3 $ 89.2 $ 100.1 $ 343.7 PolyOne Investor Presentation�Credit Suisse 26th Annual Chemical and Ag Science Conference��September 17th, 2013� Forward – Looking Statements Use of Non-GAAP Measures Strategy and Execution Drive Results Four Pillar Strategy PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Proof of Performance & 2015 Goals Innovation Drives Earnings Growth We are Experts in Polymer Science and Formulation Positioned for Strong Growth First Half 2013 Financial Highlights Debt Maturities & Liquidity Summary – 6/30/13 Use of Cash Why Invest In PolyOne?

EPS (ex Amort) 3.96$ 0.13$ 4.09$ (0.58)$ 3.51$ Pro Forma Leverage (12/31/2022E) Net Debt / Adjusted EBITDA 1.6x 3.4x 2.8x Forecast Dyneema Forecast + Dyneema Sale of Distribution Pro Forma 2022 TWO-YEAR LEVERAGE MODEL 20 3.5x 2.7x 1.6x 2.8x 2.4x 2.0x 2019PF 2020PF 2022E 2022PF 2023E 2024E Dyneema® AcquisitionClariant Color Acquisition (1) Pro forma for the acquisition of the Clariant Color business (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan (1) (1) (2) OUR SPECIALTY JOURNEY CONTINUES 21 • Dyneema® brings leading technology and brand with the World’s Strongest Fiber™, deep history of application development and strong management team focused on specialty applications • Dyneema® transaction is aligned with our previously stated acquisition goal of expanding our composites and fiber capabilities • Similar to our other technology expansion acquisitions, Dyneema® allows us to leverage our invest-to-grow strategy • The possible sale of our Distribution business also presents potential benefits with respect to leverage and EBITDA margins 46% 66% 86% 100% 0% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d EB IT D A(1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) Building & 43% 14% Telecom. 2006 2022 Pro forma Building & Telecom. D ISTR IBU TIO N ) 22 END-MARKET FOCUS FOR NEW INNOVATION Semiconductors Robotics Healthcare Interconnected disruptive markets with massive innovation needs 23 APPENDIX Performance Additives Pigments TiO2 Dyestuffs 3%Polyethylene Nylon 6% Polypropylene Other Raw Materials 30% Styrenic Block Copolymer ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 30 • Significant raw material price inflation and tight inventory continued in Q2 2022, although at a slightly lesser rate compared to the prior quarter o For Q2 2022, the average cost of key hydrocarbon based materials was up 15%, roughly the same as the average cost of non- hydrocarbon based materials Three Months Ended June 30, 2022 Three Months Ended June 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income attributable to Avient shareholders $ 84.7 $ 0.92 $ 68.8 $ 0.74 Special items, after tax 5.1 0.06 11.7 0.13 Adjusted net income / EPS - excluding special items 89.8 0.98 80.5 0.87 FX adjustment n/a n/a $ (4.9) $ (0.05) Adjusted net income / EPS - excluding special items, adjusted for FX $ 89.8 $ 0.98 $ 75.6 $ 0.82 Reconciliation to Consolidated Statements of Income Three Months Ended June 30, 2022 2021 Results Results FX Adjustment FX Adjusted Sales: Color, Additives and Inks $ 649.1 $ 624.4 $ (35.8) $ 588.6 Specialty Engineered Materials 243.9 240.6 (10.5) 230.1 Distribution 443.2 404.4 (0.2) 404.2 Corporate and eliminations (33.8) (34.2) (1.2) (35.4) Sales $ 1,302.4 $ 1,235.2 $ (47.7) $ 1,187.5 Operating income: Color, Additives and Inks $ 93.6 $ 86.3 $ (5.2) 81.1 Specialty Engineered Materials 36.6 37.3 (1.3) 36.0 Distribution 27.1 23.7 — 23.7 Corporate and eliminations (27.8) (39.2) 0.2 (39.0) Operating income 129.5 108.1 (6.3) 101.8 Special items in operating income 4.3 14.2 — 14.2 Adjusted operating income $ 133.8 $ 122.3 $ (6.3) $ 116.0 1 June 30, 2022 GAAP Special Adjusted Operating Income $ 129.5 $ 4.3 $ 133.8 Income before income taxes $ 114.7 $ 3.4 $ 118.1 Income tax expense - GAAP (30.0) — (30.0) Income tax impact of special items — (0.8) (0.8) Tax adjustments — 2.5 2.5 Net income attributable to noncontrolling interests — — — Net income attributable to Avient shareholders $ 84.7 $ 5.1 $ 89.8 EPS $ 0.92 0.06 $ 0.98 Weighted-average diluted shares 92.1 92.1 92.1 June 30, 2021 GAAP Special Adjusted Operating Income $ 108.1 $ 14.2 $ 122.3 Income before income taxes $ 89.8 $ 14.2 $ 104.0 Income tax expense - GAAP (20.4) — (20.4) Income tax impact of special items — (3.4) (3.4) Tax adjustments — 0.9 0.9 Net income attributable to noncontrolling interests (0.6) — (0.6) Net income attributable to Avient shareholders $ 68.8 $ 11.7 $ 80.5 EPS $ 0.74 0.13 $ 0.87 Weighted-average diluted shares 92.4 92.4 92.4 September 30, 2021 GAAP Special Adjusted Operating income $ 78.7 $ 20.0 $ 98.7 Income from continuing operations before income taxes $ 61.1 $ 19.9 $ 81.0 Income tax expense - GAAP (8.5) — (8.5) Income tax impact of special items — (4.6) (4.6) Tax adjustments — (3.6) (3.6) Net income attributable to noncontrolling interests 0.3 — 0.3 Net income from continuing operations attributable to Avient shareholders $ 52.9 $ 11.7 $ 64.6 Net income / EPS $ 0.57 $ 0.13 $ 0.70 Weighted-average diluted shares 92.2 92.2 92.2 Reconciliation of EBITDA by Segment Year Ended 2021年12月31日 Operating income: Color, Additives and Inks $ 303.1 Specialty Engineered Materials 132.0 Distribution 93.2 Corporate and eliminations (147.1) Operating income $ 381.2 Items below OI in Corporate: Other income, net $ (1.3) Depreciation & amortization: Color, Additives and Inks $ 105.7 Specialty Engineered Materials 31.7 Distribution 0.8 Corporate and eliminations 7.7 Depreciation & Amortization $ 145.9 EBITDA: Color, Additives and Inks $ 408.8 Specialty Engineered Materials 163.7 Distribution 94.0 Corporate and eliminations (140.7) EBITDA $ 525.8 June 30, Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2022 2021 2021 Net income from continuing operations – GAAP $ 84.7 $ 69.4 $ 230.6 Income tax expense 30.0 20.4 74.0 Interest expense 16.2 19.5 75.3 Depreciation and amortization from continuing operations 36.5 33.8 145.9 EBITDA $ 167.4 $ 143.1 $ 525.8 Special items, before tax 3.4 14.2 57.1 Depreciation and amortization included in special items (1.1) 1.4 (1.7) Adjusted EBITDA $ 169.7 $ 158.7 $ 581.2 AVNT Aug 2022 Presentation w Non GAAP Recs.pdf AVNT Aug 2022 Presentation Update.pdf Avient corporation�investor presentation DISCLAIMER Avient: Who We Are Who we are – Vision, Strategy, Culture What we do: material science Sustainability for a Better Tomorrow Slide Number 7 Slide Number 8 Slide Number 9 Q2 2022 SALES AND OPERATING INCOME�(Total Company) Slide Number 11 Slide Number 12 2021 Sustainability Report Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Two-Year Leverage model our Specialty Journey continues End Market transformation to less cyclical industries�(with Dyneema, ex. distribution) End-market Focus for �New innovation Slide Number 24 PEER COMPARISONS Avient is asset light High free cash flow conversion Our valuation versus peers Slide Number 29 Slide Number 30 Slide Number 31 Slide Number 32 FIT with Four Pillar Strategy AVNT Aug 2022 Presentation w Non GAAP Recs v1 Dyneema® overview AVNT Aug 2022 Presentation w Non GAAP Recs AVNT Aug 2022 Presentation Update.pdf Slide Number 35 Slide Number 36 Dyneema® in the Value Chain Demand trends Products Avient’s Existing Composites Portfolio Avient’s Composites Portfolio�Sales and Ebitda Slide Number 42 �2021 segment, end market and Geography Slide Number 44 Slide Number 45 Slide Number 46 Slide Number 47 AVNT Aug 2022 Presentation w Non GAAP Recs.pdf AVNT Q2 2022 Earnings Presentation - Website.pdf AVNT Q2 2022 Earnings Presentation - Website AVNT Q2 2022 Earnings Presentation - Website AVNT Q2 2022 Earnings Presentation - Website 7.25 323pm IR Deck - AVNT-2022.06.30.pdf AVNT Aug 2022 Presentation w Non GAAP Recs