AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) N OV E M B E R 2 , 2 0 2 3 DISCLAIMER 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. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 O P E N I N G RE MARK S B O B P A T T E R S O N C H A I R M A N , P R E S I D E N T A N D C E O Complementary technologies and customer relationships offer opportunity to advance commercial strategy Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications AVIENT PROTECTIVE MATERIALS FIRST YEAR 4 Composites comprises over half of Specialty Engineered Materials, compared to 9% in 2016 Proven history of success in areas such as outdoor high performance, defense and sustainable solutions Composites 44% 56% 2023E Sales Collaboration & InnovationComposites as a % of SEM People & Culture Talented, passionate, and creative associates drive continued integration success and allow two cultures to come together as one Avient Lightweight Protective Laminates: PROJECTILE PROTECTION Dyneema® Fiber Solutions Cushioning + Fit + Comfort: LONG-TERM WEAR reSound™ Versaflex™ Thermoplastic Elastomers Strength + Durability + Light-Weighting: SOLID MOUNTING BRACKETS Nymax™ Bergamid™ Complēt™ Engineered Materials Durability + Lubricity: HELMET LATCHES Lubri-One™ Internally Lubricated Polymers Color Consistency and Weatherability CUSTOMIZED SPECIFICATIONS Avient Color and Additive Solutions Antennae Performance FAST, RELIABLE CONNECTIONS PREPERM™ Low-Loss Dielectric Thermoplastics AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations5 6 AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES 6 Q 3 P E RFO RMAN CE 15.4% 16.3% 2022 PF 2023 Results vs.

Bergamid™ Racing Wheel Application Bergamid™ polymer formulations provide high strength and abrasion resistance for the gear of the racing wheel.

Bergamid™ Racing Wheel Application Bergamid™ polymer formulations provide high strength and abrasion resistance for the gear of the racing wheel.

Bergamid™ Racing Wheel Application Bergamid™ polymer formulations provide high strength and abrasion resistance for the gear of the racing wheel.

Avient assists in creating electronic connector for a new, low-cost computer to meet technical requirements, avoid over-engineering and meet cost-performance requirements with Bergamid™ nylon material Bergamid™ polymer formulations and GLS™ TPEs replace metal and provide comfort and usability for Swiss soldiers pocket knife

Avient assists in creating electronic connector for a new, low-cost computer to meet technical requirements, avoid over-engineering and meet cost-performance requirements with Bergamid™ nylon material Bergamid™ polymer formulations and GLS™ TPEs replace metal and provide comfort and usability for Swiss soldiers pocket knife

White TIO2-Off Grade-H/I Violet UMV 313-H/I

PATRIOT BROWN H-226 CC GREEN H-236 CC

XBERGAMID B70 G30 H UV X1 BLACK T 70 XEDGETEK TX 30GF-000 H UV Balck T 70

CLEVELAND – High-performance Bergamid™ polymer solutions from PolyOne recently received Underwriters Laboratories’ UL 7