Müller, CEO SQS 41 70 _2 / J un e 20 19 / V er si on 2 .0 A.

CONTINUOUS GLUCOSE MONITORING OEM C G M S Y S T E M M O N I T O R • Provide color options that work within a limited existing pigment set • Offer regulatory support in achieving approval for new color formulations • Shorten development time to gain faster approvals and realize lower costs • Offered color options that met desired aesthetics and moods utilizing the approved pigment set while creating a distinct color difference from an existing device • Provided support in achieving regulatory approvals, resulting in significant cost and time savings • Compressed the timeline through on-site color visualization, exploration, and formulation of new colors ColorWorks™ Design Center, Phoenix, AZ KEY REQUIREMENTS WHY AVIENT?

EYEWEAR BRAND S U N G L A S S F R A M E S • Can float on water • Excellent surface with low flash • Compatible with secondary painting process • Formulated a 0.82g/cm³ density material for lightweight performance that allowed the frames to float on water even after painting • Enabled excellent surface by addressing the typical flashing edge problems • Delivered a paintable material to support brand identity and convey value • Dedicated on-site support to ensure the density performance during secondary painting processing Edgetek™ LD Formulation KEY REQUIREMENTS WHY AVIENT?

Müller, CEO SQS 41 70 _2 / J un e 20 19 / V er si on 2 .0 A.

BLOOD LANCET MANUFACTURER S E A L I N G R I N G • Compliance with strict regulations for medical materials • Excellent sealing performance • Good compression set • Provided a recycled TPE solutions compared to silicone without increasing system cost • Delivered a TPE that complied with ISO 10993-4 & -5 and USP Class VI • Supported a change to an injection molded material to ease production and enhance assembly capabilities Versaflex™ HC TPEs – OM1040-1 Grade KEY REQUIREMENTS WHY AVIENT?

SILICONE PRODUCT MANUFACTURER M E N S T R U A L C U P S • Biocompatible silicone pigment dispersion that meets healthcare industry material requirements • Custom-colored silicone paste colorant dispersion for liquid silicone rubber (LSR) • Offered a USP Class VI certified, biocompatible silicone colorant dispersion with necessary regulatory support to meet the stringent demands of healthcare product manufacturing • Provided color customization options through personalized communication and high-level technical support Stan-Tone HC Plus Silicone Dispersions for Healthcare KEY REQUIREMENTS WHY AVIENT?

Name of topic CARGO TRAILER MANUFACTURER T R A I L E R W A L L S & F L O O R • Replace metal sheet skin and framing on current trailer design • Reduce trailer weight and labor costs • Provide a reliable supply chain and quality control system • Provided an impact resistant and corrosion- proof composite material to prevent dents and rust • Reduced labor costs by delivering a customized three-layer composite with a polymer film to replace sheet metal and metal framing • Ensured supply chain reliability with fast delivery and quality control located in North America Polystrand™ APET Thermoplastic Composite Tri-ply Laminate KEY REQUIREMENTS WHY AVIENT?

POWER TOOL COMPANY B A T T E R Y P A C K • HDPE based solution • Meet flammability performance requirement for UL94 V-0 • Consistent color and global availability • Provided global technical services to enable consistent material quality in Europe and Asia • Tested and verified flame retardant performance conforming to UL94 V-0 @ 1.5 and 3.0 mm, GWFI 960°C • Delivered a pre-colored, HDPE-based solution for color uniformity globally Maxxam ™ FR Formulation KEY REQUIREMENTS WHY AVIENT?

Medical textile manufacturer LEARN MORE MEDICAL TEXTILE MANUFACTURER S U R G I C A L D R A P E S & G O W N S • Pre-tested for ISO 10993 biocompatibility standard • Available in standard blue or other customized colors • Compatible with ETO sterilization • Suitable for use in non-woven SMS spunbond layer • Offered standard blue and custom colors such as green • Pre-tested raw materials for biocompatibility ISO10993 standard • Manufactured under ISO 13485 certified medical sites with change control in place MevopurTM Healthcare Colorants and Formulations KEY REQUIREMENTS WHY AVIENT?

Avient corporation first quarter 2023 results AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) J A N UA RY 2 0 2 4 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. WHAT WE DO: WE ARE A FORMULATOR CUSTOM FORMULATION 6 N OVE MBE R 2 , 2023 W E BCAS T P RE S E N TAT I O N 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 8 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 Formulations9 10 AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES 10 Q 3 P E RFO RMAN CE 15.4% 16.3% 2022 PF 2023 Results vs. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 83 80 78 74 86 79 76 67 66 55 50 (39) Av ie nt KW R FU L PP G AV Y R PM FM C C E EC L AS H H XL H U N EM N SC L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $41.57.