TIER 1 SUPPLIER S E A T B U C K L E S Y S T E M • Rapid development of 3 colors for global OEM platform, for 3 materials (POM, SAN, PP) • Help Tier 1 transition from printing to laser marking of buckles • Develop formulation that offers laser marking solution plus color • Quick reaction to develop three colors for this global vehicle launch • Smartbatch™ color + laser marking formulation met requirements for critical safety components Smartbatch™ Combination Colorants & Additives KEY REQUIREMENTS WHY AVIENT?

Coffee Capsules case study DESIGN FOR COMPOSTING C O F F E E C A P S U L E S • Compliance with European Standard EN 13432 • Biodegradable and compostable solutions approved by certified body (TÜV Austria) • Color customization for various kind of biopolymers • Formulation expertise and regulatory assistance OnColor™ Bio-Colorants KEY REQUIREMENTS WHY AVIENT?

AVIENT CORPORATION F I R S T Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) M A Y 3 , 2 0 2 3 D I S C L A I M E R Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 32 79 87 83 81 76 73 90 79 77 76 73 69 60 22 A vi e n t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L M U LT I P L E E X PA N S I O N Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $38.51. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 33 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 A vi e n t (2 0 1 1 ) A vi e n t (2 0 1 8 ) A vi e n t (2 0 2 3 ) K W R P P G R P M A V Y F U L E C L H X L F M C A S H S C L C E E M N H U N 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.

T I G H T B U F F E R I N G E L - F I L L E D L O O S E T U B E F O R A E R I A L C A B L E S GLOBAL CABLE MANUFACTURER • Operating temperature from -40°C to 70°C • High gel resistance • Low shrinkage • Stripability for easy installation • Good flame retardancy • Developed a formulation with good thermal behaviour and low shrinkage • Enabled a greater range of operating temperatures giving the customer the flexibility of using the same cable design in a range of different climates • Provided superior gel resistance increasing life time of the cable • Utilized simulation service to optimize customer tooling and extrusion output ECCOH™ 5806 Formulation KEY REQUIREMENTS WHY AVIENT?

E L E C T R I C A L PA RT S M A N U FAC T U R E R H E A V Y D U T Y C O N N E C T O R S A N D A C C E S S O R I E S • Reduce material rematching and rejection through more efficient pre-testing • Improve processing efficiencies and color consistency in highly FR-filled and high-temperature resins • Achieve regulatory compliance across multiple resin families • Gain better supply chain control to manage scarcity of key engineering resins and changing resin producers • Offered eight UL 94-recognized sites in U.S.

Versaflex HC - Syringe Plunger - Spanish FABRICANTE DE JERINGAS É M B O L O D E J E R I N G A D E S E C H A B L E • Cumplir con las normas USP VI e ISO 10993-4,5 • Esterilización con gamma y EtO • Rendimiento de sellado a largo plazo • Bajo coeficiente de fricción (COF) • Rendimiento uniforme en jeringas de diferentes diámetros • Ofreció una solución formulada que cumple con los requerimientos rigurosos de una aplicación médica • Mejoró la continuidad del suministro global • Aumentó la eficiencia del proceso al sustituir el material termoestable anterior con un TPE Versaflex™ HC 2110-57B REQUERIMIENTOS CLAVE ¿POR QUÉ AVIENT?

AU TO M O T I V E C O M P O N E N T S M A N U FA C T U R E R O U T S I D E R E A R - V I E W M I R R O R G A S K E T • Black materials with hardness 60 and shore A • UV Stabilized • Overmouldable on to PP • ROHS Compliant • Customer specified material • Utilized global reach to translate customer approved solution from Europe to India • Reduced development time as material was already qualified in Europe • Reduced import/export costs • Enabled Indian business to specify Avient as a preferred supplier Custom GLS™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?

W I R E L E S S P OW E R BA N K M A N U FAC T U R E R W I R E L E S S P O W E R B A N K • Excellent overmolding to PC/ABS • Good stain resistance and UV resistance • Easy processing • Silky Feel • Developed a customized TPE that exhibited better bonding and UV performance than the competition, and met all specification requirements • Supplied a pre-colored formulation to simplify processing and achieve desired look and feel Customized Versaflex™ CE 3120-65 KEY REQUIREMENTS WHY AVIENT?

China Date of Issue：2024-10-26 Date of Expiry：2027-10-25 Date of Initial Issue：2021-10-28 证书编号 E受审核方 英文组织机构代码 E认证范围 E注册地址 E生产办公地址 E注册日期 E有效期至 E初次颁证日期 二维码

PP NONWOVEN MANUFACTURER G E O T E X T I L E S • High concentrate UV solution (up to 50% light protection) in PP nonwoven textiles • Shorter lead time from existing supplier • Local technical support • Long-lasting UV stability • Provided high concentrate UV protection in nonwoven textiles with dosage @ 50% • Shortened the lead time with global supply and technical service • Offered excellent UV stability CesaTM Light Additives KEY REQUIREMENTS WHY AVIENT?