The following table provides membership and meeting information for each committee as of March 19, 2024. The information below is current as of March 19, 2024.   Beggs, the stock awards reflect RSUs that were granted in recognition of her appointment as Senior Vice President, Chief Financial Officer on August 24, 2020, and which vested on August 24, 2023.

Director since: 2021 Age: 53 Current Public Company Directorships: • None Former Directorships: • None ELECTION OF BOARD OF DIRECTORS PROXY STATEMENT 2023 | Annual Meeting of Shareholders 19 William R. Rathbun – 65% for January 2022 – July 2022 (increased from a 2021 target of 60%) and 75% for August 2022– December 2022 (increased from the 65% target, in recognition of Mr. Beggs joined the Company on August 24, 2020, after the grant date for these awards, and therefore did not participate in the 2020-2022 Long-Term Incentive Program.

Наш кодекс поведения 2023 Оглавление ОБРАЩЕНИЕ ГЕНЕРАЛЬНОГО ДИРЕКТОРА 1 НАШЕ ВИДЕНИЕ И СТРАТЕГИЯ 2 ОСНОВОПОЛАГАЮЩИЕ И ЛИЧНОСТНЫЕ ЦЕННОСТИ 2 Наш кодекс поведения РУКОВОДЯЩИЕ ПРИНЦИПЫ ДЛЯ ЭТИЧНОГО ПОВЕДЕНИЯ 4 ЛИЧНОСТНЫЕ ЦЕННОСТИ 4 РЕШЕНИЕ ВОПРОСОВ И СООБЩЕНИЯ О СИТУАЦИЯХ, КОГДА ПРОИСХОДЯТ НАРУШЕНИЯ НОРМАТИВНО-ПРАВОВОГО СООТВЕТСТВИЯ 6 ГОРЯЧАЯ ЛИНИЯ ПО ВОПРОСАМ ЭТИКИ 6 ЗАПРЕТ МЕР ВОЗМЕЗДИЯ 7 ПРИМЕНЕНИЕ КОДЕКСА ПОВЕДЕНИЯ 7 НАРУШЕНИЯ КОДЕКСА 7 Уважение ко всем РАЗНООБРАЗИЕ И ВКЛЮЧЕНИЕ СОТРУДНИКОВ В ПРОЦЕСС ОБСУЖДЕНИЯ ПРОБЛЕМ 9 ДИСКРИМИНАЦИЯ ИЛИ ПРИТЕСНЕНИЯ 9 ОТНОШЕНИЯ НА РАБОЧЕМ МЕСТЕ 9 ЗЛОУПОТРЕБЛЕНИЕ АЛКОГОЛЕМ И НАРКОТИКАМИ 10 ФИЗИЧЕСКАЯ БЕЗОПАСНОСТЬ И НАСИЛИЕ НА РАБОЧЕМ МЕСТЕ 10 Честность на рабочем месте ТОЧНАЯ ИНФОРМАЦИЯ, ДАННЫЕ И ДОКУМЕНТАЦИЯ 12 ДОБРОСОВЕСТНОСТЬ БУХГАЛТЕРСКОГО УЧЕТА 12 КОММУНИКАЦИИ КОМПАНИИ 14 ЗАЩИТА АКТИВОВ И ИХ ИСПОЛЬЗОВАНИЕ 14 ЛИЧНАЯ И КОНФИДЕНЦИАЛЬНАЯ ИНФОРМАЦИЯ, ИДЕИ И ИНТЕЛЛЕКТУАЛЬНАЯ СОБСТВЕННОСТЬ 14 КОНФИДЕНЦИАЛЬНОСТЬ, ЛИЧНАЯ ИНФОРМАЦИЯ И ЗАЩИТА ДАННЫХ 15 ИСПОЛЬЗОВАНИЕ ИНТЕРНЕТА И ЭЛЕКТРОННОЙ ПОЧТЫ 15 СОЦИАЛЬНЫЕ МЕДИА И СОЦИАЛЬНЫЕ СЕТИ 16 КОМПЬЮТЕРНАЯ БЕЗОПАСНОСТЬ, ЛИЦЕНЗИРОВАНИЕ ПРОГРАММНОГО ОБЕСПЕЧЕНИЯ И АВТОРСКИЕ ПРАВА 16 ИНСАЙДЕРСКАЯ ИНФОРМАЦИЯ И ТОРГОВЛЯ 16 ПОЛИТИЧЕСКИЕ ВЗНОСЫ/МЕРОПРИЯТИЯ И БЛАГОТВОРИТЕЛЬНЫЕ ВЗНОСЫ 17 РАССЛЕДОВАНИЯ, ПРОВОДИМЫЕ ГОСУДАРСТВЕННЫМИ ОРГАНАМИ, И ЗАПРОСЫ 17 Добросовестность в нашем бизнесе ЧЕСТНАЯ ДЕЛОВАЯ ПРАКТИКА 19 ВЗЯТКИ И ОТКАТЫ 19 АГЕНТЫ И КОНСУЛЬТАНТЫ 19 КОНКУРЕНЦИЯ 20 ПОДАРКИ И ЗНАКИ ГОСТЕПРИИМСТВА 20 КОНФЛИКТ ИНТЕРЕСОВ 21 ЗЛОУПОТРЕБЛЕНИЕ СЛУЖЕБНЫМ ПОЛОЖЕНИЕМ 22 МЕЖДУНАРОДНАЯ ТОРГОВЛЯ 22 Корпоративная социальная ответственность УСТОЙЧИВОЕ РАЗВИТИЕ 24 БЕЗОПАСНОСТЬ, ЗДОРОВЬЕ И ОКРУЖАЮЩАЯ СРЕДА 24 БЕЗОПАСНОСТЬ ПРОДУКЦИИ И УСЛУГ 25 УВАЖЕНИЕ ПРАВ ЧЕЛОВЕКА 25 СОВМЕСТНОЕ ОБЯЗАТЕЛЬСТВО 25 Ресурсы и контактная информация 26 1 Оглавление ОБРАЩЕНИЕ ГЕНЕРАЛЬНОГО ДИРЕКТОРА Уважаемые сотрудники компании Avient! Наша личная добросовестность является основой репутации компании Avient, а добросовестность создает доверие. 19 Оглавление ЧЕСТНАЯ ДЕЛОВАЯ ПРАКТИКА Мы продаем наши продукты и услуги, оценивая их по достоинству. Поммерлох, Люксем- бург 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Телефон: +352 269 050 35 Факс: +352 269 050 45 www.avient.com http://www.avient.com ОБРАЩЕНИЕ ГЕНЕРАЛЬНОГО ДИРЕКТОРА Наше видение и стратегия Основополагающие и личностные ценности Наш кодекс поведения РУКОВОДЯЩИЕ ПРИНЦИПЫ ДЛЯ ЭТИЧНОГО ПОВЕДЕНИЯ ЛИЧНОСТНЫЕ ЦЕННОСТИ РЕШЕНИЕ ВОПРОСОВ И СООБЩЕНИЯ О СИТУАЦИЯХ, КОГДА ПРОИСХОДЯТ НАРУШЕНИЯ НОРМАТИВНО-ПРАВОВОГО СООТВЕТСТВИЯ ГОРЯЧАЯ ЛИНИЯ ПО ВОПРОСАМ ЭТИКИ ЗАПРЕТ МЕР ВОЗМЕЗДИЯ ПРИМЕНЕНИЕ КОДЕКСА ПОВЕДЕНИЯ НАРУШЕНИЯ КОДЕКСА Уважение ко всем РАЗНООБРАЗИЕ И ВКЛЮЧЕНИЕ СОТРУДНИКОВ В ПРОЦЕСС ОБСУЖДЕНИЯ ПРОБЛЕМ ДИСКРИМИНАЦИЯ ИЛИ ПРИТЕСНЕНИЯ ОТНОШЕНИЯ НА РАБОЧЕМ МЕСТЕ ЗЛОУПОТРЕБЛЕНИЕ АЛКОГОЛЕМ И НАРКОТИКАМИ ФИЗИЧЕСКАЯ БЕЗОПАСНОСТЬ И НАСИЛИЕ НА РАБОЧЕМ МЕСТЕ Честность на рабочем месте ТОЧНАЯ ИНФОРМАЦИЯ, ДАННЫЕ И ДОКУМЕНТАЦИЯ ДОБРОСОВЕСТНОСТЬ БУХГАЛТЕРСКОГО УЧЕТА РАССЛЕДОВАНИЯ, ПРОВОДИМЫЕ ГОСУДАРСТВЕННЫМИ ОРГАНАМИ, И ЗАПРОСЫ ПОЛИТИЧЕСКИЕ ВЗНОСЫ/МЕРОПРИЯТИЯ И БЛАГОТВОРИТЕЛЬНЫЕ ВЗНОСЫ ИНСАЙДЕРСКАЯ ИНФОРМАЦИЯ И ТОРГОВЛЯ КОМПЬЮТЕРНАЯ БЕЗОПАСНОСТЬ, ЛИЦЕНЗИРОВАНИЕ ПРОГРАММНОГО ОБЕСПЕЧЕНИЯ И АВТОРСКИЕ ПРАВА СОЦИАЛЬНЫЕ МЕДИА И СОЦИАЛЬНЫЕ СЕТИ КОНФИДЕНЦИАЛЬНОСТЬ, ЛИЧНАЯ ИНФОРМАЦИЯ И ЗАЩИТА ДАННЫХ ЛИЧНАЯ И КОНФИДЕНЦИАЛЬНАЯ ИНФОРМАЦИЯ, ИДЕИ И ИНТЕЛЛЕКТУАЛЬНАЯ СОБСТВЕННОСТЬ ЗАЩИТА АКТИВОВ И ИХ ИСПОЛЬЗОВАНИЕ КОММУНИКАЦИИ КОМПАНИИ ИСПОЛЬЗОВАНИЕ ИНТЕРНЕТА И ЭЛЕКТРОННОЙ ПОЧТЫ Добросовестность в нашем бизнесе ЧЕСТНАЯ ДЕЛОВАЯ ПРАКТИКА ВЗЯТКИ И ОТКАТЫ АГЕНТЫ И КОНСУЛЬТАНТЫ КОНКУРЕНЦИЯ ПОДАРКИ И ЗНАКИ ГОСТЕПРИИМСТВА КОНФЛИКТ ИНТЕРЕСОВ ЗЛОУПОТРЕБЛЕНИЕ СЛУЖЕБНЫМ ПОЛОЖЕНИЕМ МЕЖДУНАРОДНАЯ ТОРГОВЛЯ Корпоративная социальная ответственность УСТОЙЧИВОЕ РАЗВИТИЕ БЕЗОПАСНОСТЬ, ЗДОРОВЬЕ И ОКРУЖАЮЩАЯ СРЕДА БЕЗОПАСНОСТЬ ПРОДУКЦИИ И УСЛУГ УВАЖЕНИЕ ПРАВ ЧЕЛОВЕКА СОВМЕСТНОЕ ОБЯЗАТЕЛЬСТВО

مدونة قواعد السلوك الخاصة بنا 2023 جدول المحتويات 1 رسالة من املدير التنفيذي 2 رؤيتنا واسرتاتيجيتنا 2 القيم األساسية والشخصية مدونة قواعد سلوكنا 4 املبادئ التوجيهية للسلوك األخالقي 4 القيم الشخصية 6 حل املسائل واإلبالغ عن حاالت عدم االمتثال 6 الخط الساخن لألخالقيات 6 عدم االنتقام 6 تطبيق مدونة قواعد السلوك 6 مخالفات مدونة قواعد السلوك االحترام للجميع 8 التنوع والدمج 8 التمييز أو املضايقات 8 العالقات يف مكان العمل 9 إدمان املخدرات 9 األمان املادي والعنف يف مكان العمل األمانة في العمل 11 املعلومات، والبيانات، والسجالت الدقيقة 11 نزاهة املحاسبة 13 اتصاالت الرشكة 13 حامية األصول واستخدامها 13 حقوق امللكية ورسية املعلومات، واألفكار وامللكية الفكرية 13 حامية الخصوصية، واملعلومات الشخصية، والبيانات 14 استخدام شبكة اإلنرتنت والربيد اإللكرتوين 14 وسائل التواصل االجتامعي والشبكات االجتامعية 14 املعلومات الداخلية والتداول 15 املساهامت واألنشطة السياسية/واملساهامت الخريية 15 التحقيقات واالستفسارات الحكومية النزاهة في عملنا 17 التعامل العادل 17 الرشاوى والعموالت 18 الوكالء واملستشارون 18 املنافسة 18 الهدايا واالستضافة 19 تضارب املصالح 19 تعامل ذايت تتنافر فيه املصلحة والواجب 19 التجارة الدولية المسؤولية االجتماعية بالشركة 21 االستدامة 21 السالمة، والصحة، والبيئة 21 سالمة املنتج والخدمة 21 احرتام حقوق اإلنسان 22 التزام مشرتك 23 موارد ومعلومات االتصال 1 جدول املحتويات رسالة من المدير التنفيذي ،Avient السادة موظفي نظرًا ألننا جزء من رشكة عاملية متنامية، فإننا نواجه مواقف صعبة وعمليات صنع قرار معّقدة. عالوًة عىل ذلك، ال تُقّدم أو تقبل هذه األشياء إذا كان القيام بذلك غري مرشوعة قانونيًا أو إذا كان شأن القيام بذلك أن يخرتق عمًدا املبادئ الخاصة برب عمل الطرف اآلخر. 19 جدول املحتويات ميكن استخدام املرشوبات الكحولية يف إطار الرتفيه عن العمالء أو خالل األنشطة االجتامعية األخرى. 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، الواليات المتحدة األمريكية ووكر رود آفون ليك، أوهايو ، الواليات 33587 المتحدة 44012 الخط المجاني: 9663 765 866 1+ الهاتف: 1000 930 440 1+ الفاكس:3064 930 440 1+ آسيا والمحيط الهادئ المقر اإلقليمي 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 اإلقليمي ساو باولو ، البرازيل جادة فرانسيسكو ناكاساتو، 1700 إتوبيفا، ساو باولو، البرازيل 000- 13295 الهاتف: 9200 4593 11 55+ أوروبا المقر اإلقليمي بومرلوتش، لوكسمبورغ ،طريق باستون بومرلوتش، لوكسمبورغ 19 L-9638 الهاتف: 35 050 269 352+ الفاكس: 45 050 269 352+ www.avient.com http://www.avient.com

Learn more http://www.avient.com/tpeknowledgecenter http://www.avient.com Next Page 2: Previous Page 2: Next Page 3: Previous Page 3: Next Page 4: Previous Page 4: Next Page 8: Previous Page 8: Next Page 5: Previous Page 5: Next Page 9: Previous Page 9: Next Page 6: Previous Page 6: Previous Page 10: Next Page 10: Next Page 7: Previous Page 7: Next Page 11: Previous Page 11: Next Page 12: Previous Page 12: Next Page 13: Previous Page 13: Next Page 32: Previous Page 33: Next Page 34: Previous Page 37: Next Page 14: Previous Page 14: Next Page 15: Previous Page 16: Next Page 16: Previous Page 17: Next Page 17: Previous Page 18: Next Page 33: Previous Page 34: Next Page 18: Previous Page 19: Next Page 19: Previous Page 20: Next Page 20: Previous Page 21: Next Page 21: Previous Page 22: Next Page 22: Previous Page 23: Next Page 23: Previous Page 24: Next Page 24: Previous Page 25: Next Page 25: Previous Page 26: Next Page 26: Previous Page 27: Next Page 27: Previous Page 28: Next Page 28: Previous Page 29: Next Page 29: Previous Page 30: Next Page 30: Previous Page 31: Next Page 31: Previous Page 32: Previous Page 15: Previous Page 35: Previous Page 36:

Investor Day P O L Y O N E I N V E S T O R P R E S E N T A T I O N M A R C H 2 0 1 9 F O R W A R D L O O K I N G S T A T E M E N T S PolyOne Corporation 2 • • • • • • • • • • U S E O F N O N - G A A P M E A S U R E S PolyOne Corporation 3 • • • V I S I O N PolyOne Corporation 4 To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Excellence Commercial Excellence Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions S A F E T Y F I R S T PolyOne Corporation 5 Injuries per 100 Workers Spartech Acquisition 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 0.51 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 PolyOne Corporation 6 P O L Y O N E 2 0 1 8 R E V E N U E | $ 3 . 5 B I L L I O N Transportation 17% Industrial 15% Consumer 12% Packaging 11% Wire & Cable 10% Appliance 5% United States 57% Europe 16% Asia 10% Latin America 10% Canada 7% Distribution 35% Performance Products & Solutions 19% Specialty Engineered Materials 17% Color Additives & Inks 29% Segment End Market Geography Building & Construction 11% Electrical & Electronics 6% Healthcare 13% 2009 2010 2011 2012 2013 2014 2015 2016* 2017* 2018 $2.43 P R O O F O F P E R F O R M A N C E C O N S E C U T I V E Y E A R S PolyOne Corporation 7 9 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 2006 2018 ROIC** 5.0% 14.1% Operating Income % of Sales Color, Additives & Inks 1.7% 15.1% Specialty Engineered Materials 1.1% 11.2% Performance Products & Solutions 4.3% 10.0% Distribution 2.6% 5.6% A D J U S T E D E P S E X P A N S I O N S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 8 P E O P L E P R O D U C T S P L A N E T P E R F O R M A N C E Double digit annual EPS growth strategic acquisitions Innovate 600K-1M commercial resources 5-7% Double acquired margins Lean Six Sigma commercial excellence 531 710 130 164 504 663 2014 2018 R&D / Technical Marketing Sales PolyOne Corporation 9 Increased commercial headcount + 34% + 26% + 32% I N V E S T M E N T I N C O M M E R C I A L R E S O U R C E S D R I V I N G G R O W T H Sustained revenue increases led by organic business $2.9 $2.9 $3.2 $3.5 2015 2016 2017 2018 Total + 9% Organic + 5% Revenue in billions of $ Total + 10% Organic + 7% Lead Specialists T H E E V O L V I N G C U S T O M E R R E L A T I O N S H I P PolyOne Corporation 10 Expanded Path Traditional Path Strategic Accounts/ Field Sales Business Development Customer Service Web and Social Media Inside Sales PolyOne Corporation 11 Investments in digital and dedicated inside sales to improve customer experience 110% increase in leads (from 6,000 to 12,700) driven by website, phone, and online chat E X P A N D E D P A T H A D D I N G C U S T O M E R T O U C H P O I N T S 4 24 2014 2018 Inside sellers $11M $109M 2014 2018 Inside sales/digital revenue A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R PolyOne Corporation 12 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection I N N O V A T I O N PolyOne Corporation 13 Customization 55% M&A 30% Innovation Pipeline 15% Innovation comes from Research & Development Spend Vitality Index 12% 35% 2006 2018 $20 $56 2006 2018 Transformational Adjacent Core 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 14 Market Technical I N N O V A T I O N I N N O V A T I O N P I P E L I N E PolyOne Corporation 15 PrototypeFrame Opportunity Scale-up & Test Market Build Business Case Commercial Launch (since 2017) Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 6 11 4 4 3 2 28 0 5 10 7 2 5 5 Breakthrough Platform Derivative F L A M E R E T A R D A N T P O L Y M E R S A D V A N C E D C O M P O S I T E S B A R R I E R M A T E R I A L S C O L O R A N T T E C H N O L O G I E S T H E R M O P L A S T I C E L A S T O M E R S I N N O V A T I O N S P O T L I G H T : C O M P O S I T E S PolyOne Corporation 16 C O M P O S I T E S R E F R E S H E R PolyOne Corporation 17 Fiber Polymer Composite S T R A T E G I C I N V E S T M E N T H I S T O R Y Thermoplastic Composites Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets 2012 2015 20162009 2011 2018 PolyOne Corporation 2019 18 C O M P O S I T E S I N T R A N S P O R T A T I O N PolyOne Corporation 19 W A T E R C R A F TR A I L H E A V Y T R U C K F I B E R - L I N E H I G H L I G H T S PolyOne Corporation 20 $100M • • • • • • • • • • • • • • • • • • • Customer Value Fiber-Line Fiber Processing Capabilities Polymer Formulation Capabilities P O L Y O N E A P P L I C A T I O N S I N F I B E R O P T I C C A B L E S PolyOne Corporation 21 • • • • • • • • • F I B E R O P T I C A L G R O W T H D R I V E R S PolyOne Corporation 22 5G Networks      10x 8x 5G vs. 4G PolyOne Corporation 23 Safety Technology Geography Service FinancialPeople 8-10% with ability to double I N V E S T - T O - G R O W M & A S T R A T E G Y PolyOne Corporation 24 Capture sourcing synergies Cross-sell & blend technology 8-10% operating margins I N V E S T - T O - G R O W M & A P L A Y B O O K Protect customers Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First!

Results driven by better than expected results in the Americas, more than offsetting extended COVID-19 lockdowns in Shanghai • Third quarter adjusted EPS guidance of $0.80 introduced with full year adjusted EPS guidance of $3.50 maintained (without giving effect to any adjustments for the announced acquisition of DSM Protective Materials and potential sale of Distribution) • Most recent Sustainability Report published, highlighting the company’s progress on ESG initiatives focused on People, Products, Planet and Performance CLEVELAND – July 26, 2022 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its second quarter 2022 results. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks, including recessionary conditions; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; any material adverse changes in the Dyneema Business; our ability to achieve the strategic and other objectives relating to the Dyneema Acquisition, and the possible sale of the Distribution business segment; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation and any recessionary conditions.

We specialize in formulating sustainable solutions to meet our customers’ toughest challenges, and I am proud of how well our team has delivered throughout the COVID- 19 pandemic and recent supply chain disruptions.” Factors that could cause actual results to differ materially from those implied by these forward-looking statements include disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows; our ability to achieve the strategic and other objectives relating to the acquisition of Clariant's Masterbatch business, including any expected synergies; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve the anticipated financial benefit from initiatives related to acquisition and integration working capital reductions, cost reductions and employee productivity goals; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to consummate and successfully integrate acquisitions; and amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions.

& Canada 40% EMEA 37% Asia 18% Latin America 5% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 20% Packaging 24% Industrial 15% Building and Construction 10% Telecommunications 4% Energy 4% Defense 6% END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) Transportation 9% Healthcare 8% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 2 R E V E N U E | $ 2 . 4 B I L L I O N US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 33 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2 0 2 2 P R O F O R M A R E V E N U E | $ 1 . 3 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 34 Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 27% Healthcare 8% Industrial 14% Building & Construction 5% Telecommunications 3% Energy 1% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 2 P R O F O R M A AV I E N T R E G I O N A L S A L E S Packaging 27% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 10% Energy 5% Defense 8% EMEA (37% of sales)Transportation 11% Packaging 13% Consumer 24% Healthcare 12% Industrial 15% Building & Construction 13% Energy 5% Defense 5% US & Canada (40% of sales) Transportation 7% Packaging 56% Consumer 23% Healthcare 4% Industrial 7% Building & Construction 4% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% 35 B Y E N D M A R K E T 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 Three Months Ended 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: Three Months Ended 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

$3.1B 9,000+ 80+ 100+ 2011 36% 64% 2023 sales by business segment Specialty Engineered Materials SEM Color, Additives & Inks CAI 2023 sales by end market 41% 36% 18% 5% 2023 sales by region US, Canada LATAM Asia EMEA PACKAGING 23% CONSUMER 19% INDUSTRIAL 16% TRANSPORTATION 10% BUILDING & CONSTRUCTION 9% HEALTHCARE 7% DEFENSE 7% ENERGY 5% TELECOM 4% Copyright © . All Rights Reserved 2024 19 Digital digital tools, data-driven insights artificial intelligence Higher run-rates, improved yields, reduced downtime and wastage Manufacturing execution system EXPECTED BENEFITS Reduction in time-to-market, use of alternative formulations to mitigate risks from resin shortage Color design EXPECTED BENEFITS Faster generation/repurposing of content, enhanced search engine optimization leading to more engagement Marketing content EXPECTED BENEFITS Copyright © .