He is also Chairman and Chief Executive Officer of Tesoro Logistics LP, a NYSE-listed master limited partnership that owns, operates and develops crude oil and refined products and logistics assets, since April 2011. Patterson served in leadership roles at Novelis, Inc., an aluminum rolled products manufacturer, and SPX Corporation, a multi-industry manufacturer and developer, after starting his career at Arthur Andersen LLP. Preete Age: 55 Director Since: 2013 Executive Vice President, Global Strategy for Monsanto Company, a leading global provider of technology- based solutions and agricultural products that improve farm productivity and food quality, since 2010.

Alle verkoop aan klanten moet gebaseerd zijn op prijs, voorwaarden en de kwaliteit van het product en de dienst die geleverd moet worden. Daardoor zullen we op legaal en ethische wijze technische, kost-, product-, markt- en andere informatie verzamelen over de markten en onze concurrenten via openbaar beschikbare informatie, en via klanten, analyse, verzoeken en observaties. Product- en dienstveiligheid Het is essentieel dat Avient veilige producten en diensten levert die het vertrouwen van onze klanten behouden, onze verantwoordelijkheden aan het publiek vervullen en een concurrerende positie behouden op de markt.

Investor Day POLYONE 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 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 USE OF NON-GAAP MEASURES 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 United States 57% 16% Latin America Canada Distribution Performance Products & Solutions 19% Specialty Engineered Color Additives & Inks 29% Segment End Market Geography Building & Construction Electrical & Electronics 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 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 Lean Six Sigma commercial excellence 531 710 130 164 504 663 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 COMMERCIAL RESOURCES 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 EXPANDED PATH A DDI N G C U S T O M E R T O U C H P O I N T S 24 Inside sellers $11M $109M 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 Innovation comes from Research & Development Spend Vitality Index $20 $56 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 3 2 28 0 10 7 2 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 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!

การตกลงร่วมกันในแนวราบ ความผิดรา้ยแรงที่สุดคอืการตกลง รว่มกันในแนวราบ (Horizontal agreement) ระหวา่งคูแ่ข่งเพื่อ ยับยัง้การแข่งขัน ตวัอย่างของการตกลงดงักล่าวรวมถึงส่ิงตอ่ไปน้ี: • การตกลงรว่มกันกำ�หนดราคา (Price Fixing)—การตกลง กับคูแ่ข่งที่จะกำ�หนดหรอืส่งผลกระทบกับราคา การประมูล เงือ่นไขและข้อกำ�หนดในการขาย ควรจำ�ไวว้า่ลูกคา้และผู้ผลิต ของ Avient อาจเป็นคูแ่ข่งของ Avient • การจำ�กัดการผลิต (Production Restriction)—การตกลง กับคูแ่ข่งที่จะกำ�หนดขอบเขตหรอืจำ�กัดการผลิตเพื่อรกัษา ปรมิาณสินคา้ให้มีจำ�นวนจำ�กัดและมีราคาที่สูง • การจำ�กัดคณุภาพ (Quality Restriction)—การตกลงกับคู่ แข่งที่จะจำ�กัดการแข่งขันโดยใช้คณุภาพของผลิตภัณฑ์เป็น พืน้ฐาน • การแบ่งตลาดการคา้ (Market Division)—การตกลงกับคู่ แข่งที่จะแบ่งตลาดการคา้ผ่านการจัดสรรของอาณาเขตการ ขาย สายผลิตภัณฑ์ หรอืโดยการแบ่งหรอืการจัดสรรลูกคา้หรอื ผู้ผลิตบางอย่าง • การปฏิเสธในการทำ�ธุรกิจ (Refusals to Deal)—การตกลงกับ คูแ่ข่งที่จะคว่ำ�บาตรหรอืไม่ทำ�ธุรกิจกับบรษัิทภายนอก 2.

Sanders By Phone: (440) 930-1318 or By E-Mail: Amy.Sanders@Avient.com Jamie Beggs By Phone: (440) 930-3574 or By E-Mail: Jamie.Beggs@Avient.com mailto:Amy.Sanders@Avient.com mailto:Jamie.Beggs@Avient.com Revised: December 20, 2024 ANNEX C The following list illustrates examples of types of information that may be considered Inside Information, if not yet available to the public: Ø Unpublished monthly, quarterly or annual financial information, statements or reports for the Company or its subsidiaries; Ø Proposed mergers, acquisitions and divestitures; Ø Proposed new security issues; Ø Liquidity or cash problems; Ø Changes in earnings, dividends or other financial information; Ø Pending patents or new products; Ø Credit history; Ø Information concerning significant changes in the business or personal lives of senior-level management; Ø The existence of and risks associated with significant threatened or pending litigation; Ø Significant regulatory proceedings and governmental investigations involving the Company; Ø Significant cybersecurity incidents involving the Company; and Ø Awareness that the Company or management’s expectations regarding Company performance differ significantly from analysts’ expectations.

The Board administers its risk oversight function directly and through its committees. 8 The Board has delegated specific risk oversight responsibility to the committees of the Board as follows: (i) the Audit Committee oversees risks related to the Company’s financial statements, financial reporting processes, internal controls, information technology, and cybersecurity; (ii) the Compensation Committee oversees risks related to the Company’s compensation programs; (iii) the Governance and Corporate Responsibility Committee oversees risks related to the Company’s programs, policies, and practices related to certain sustainability and governance matters, including a review of reports on corporate responsibility and/or sustainability published by the Company; and (iv) the Environmental, Health and Safety Committee oversees risks related to safety, health, physical security, environmental, and product stewardship matters.

Interruption de la production. Le Vendeur ne sera soumis à aucune responsabilité ou dommage en cas de retard d'exécution ou de non-exécution résultant notamment d'un incendie, d'une inondation, de la glace, d'une catastrophe naturelle, d'une pandémie, d'une grève, d'un lock-out, d'une pénurie de main- d'œuvre, d'un conflit ou d'un trouble du travail, d'un accident, d'une émeute, d'un acte d'autorité gouvernementale, d'un cas de force majeure, d'une guerre, d'un acte de terrorisme (y compris le cyberterrorisme et les attaques par ransomware), ou d'autres éventualités et/ou circonstances échappant à son contrôle raisonnable et interférant avec la production, l'approvisionnement, le transport ou la consommation des produits ou la fourniture de toute matière première utilisée à cet effet, ou si l'exécution est contraire à, ou constitue une violation de, toute réglementation, loi ou exigence d'une autorité gouvernementale reconnue, et les quantités ainsi affectées peuvent être éliminées par le Vendeur du présent contrat sans responsabilité ni dommages-intérêts pour le Vendeur, mais le présent contrat n'est pas affecté pour le reste.

He is also Chairman and Chief Executive Offiff cer of Tesoro Logistics LP, a NYSE-listed master limited partnership that owns, operates and develops crude oil and refinff ed products and logistics assets, since April 2011. Patterson served in leadership roles at Novelis, Inc., an aluminum rolled products manufacff turer, and SPX Corporation, a multi-industry manufacff turer and developer, afteff r starting his career at Arthur Andersen LLP. Preete Executive Vice President, Chief Strategy Offiff cer forff Monsanto Company, a leading global provider of technology-based solutions and agricultural products that improve farm productivity att nd food quality,tt since 2010.

subject= 4 Red flags to watch out for include: • The third party is located or doing business in a country with high levels of corruption • A customer, supplier, or third party • Objects to contractual representations regarding compliance with ABAC Laws • Seeks a contract limiting competition • Divides a purchase into a group of smaller purchases, to avoid approvals required by government or Avient management • Is owned or managed by a government official or someone closely related to an official • Asks for off-book or cash adjustments in price • Is unwilling to provide details necessary for Avient to perform due diligence • A supplier or other third party • Requests payment to a personal or offshore bank account • Lacks experience with product, field, industry, or qualified staff • Objects to a detailed statement of work Accounting and Record Keeping Requirements Under most ABAC Laws, Avient and its affiliates must keep accurate and detailed books and records and maintain an adequate system of internal controls.

The Board has delegated specific risk oversight responsibility to the committees of the Board as follows: (i) the Audit Committee oversees risks related to the Company’s financial statements, financial reporting processes, internal controls, information technology, and cybersecurity; (ii) the Compensation Committee oversees risks related to the Company’s compensation programs; (iii) the Governance and Corporate Responsibility Committee oversees risks related to the Company’s programs, policies, and practices related to certain sustainability and governance matters, including a review of the Company’s Sustainability Report; and (iv) the Environmental, Health and Safety Committee oversees risks related to safety, health, physical security, environmental, and product stewardship matters.