ECCOH™ 5702 SEPAP - Riser Cables ECCOH™ LSFOH 5924 - FTTA Cable ECCOH™ 5981 BK UV - Aerial Drop Cable

ECCOH™ 5702 SEPAP - Riser Cables ECCOH™ LSFOH 5924 - FTTA Cable ECCOH™ 5981 BK UV - Aerial Drop Cable

ECCOH™ 5702 SEPAP - Riser Cables ECCOH™ LSFOH 5924 - FTTA Cable ECCOH™ 5981 BK UV - Aerial Drop Cable

OnColor™ Colorants for Wire & Cable Plug Molding, Heater Cable Insulation, Flexible Jacket, Flexible Cords, Coil Cords and Cable, Low-Smoke and Non-Halogen Options OnColor™ Colorants for Wire & Cable

Microsoft PowerPoint - AVNT Fermium Conference - May 2023 AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) M AY 4 , 2 0 2 3 H O S T E D B Y : 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. We partner with Brand Owners / OEMs, processors and assemblers to enable their goals in applications like packaging, healthcare, consumer goods, transportation, wire & cable, building & construction and textiles. FX -11% FX -3% Total Avient -14% YoY Comparison against 2022 pro forma results • Aging infrastructure driving need for greater technological advancements and upgrades • Increased focus on strength and capacity of electrical grid plays into further adoption of composites into the market  UV, weather-resistance, customized capabilities  Best-in-class customer responsiveness  Local high-quality manufacturing, unparalleled breadth of portfolio  Expanding position in insulators, utility poles, crossarms, and wind energy Avient Confidential 15 ENERGY 15 • Fiber-optic investments from AT&T, Corning, Commscope continue to drive industry toward innovation • $42B BEAD program in Infrastructure Bill to increase cable deployments; well-positioned to capitalize on “Made in America” requirement and “last mile” buildout  Flame retardance, weather-resistance enables faster, safer, more reliable connections  Local manufacturing, unparalleled breadth of portfolio  Expanding position in insulation for wire jacketing, 5G buildout TELECOMMUNICATIONS Source: U.S.

Microsoft PowerPoint - AVNT Seaport Conference Presentation AVIENT CORPORATION S E A P O R T C O N F E R E N C E (NYSE: AVNT) A U G U S T 2 4 , 2 0 2 1 DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. We partner with Brand Owners / OEMs, processors and assemblers to enable their goals in applications like packaging, healthcare, consumer goods, transportation, wire & cable, building & construction and textiles. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 29 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 2 2 2 2 3 3 3 4 3 4 4 5 5 5 5 5 6 7 27 e nt e nt ( xc l.

Avient Wire & Cable Industry Bulletin Overview of how Avient serves wire & cable customers, highlighting both power and data cables technologies Wire & Cable Colorants: OnColor™

Avient Solutions for Fiber Optic Cable Avient Wire & Cable Industry Bulletin Overview of how Avient serves wire & cable customers, highlighting both power and data cables technologies

PolyOne’s ECCOH™ low-smoke and fume, non-halogen flame-retardant material for wire and cable enabled Keystone to quickly manufacture and deliver medium- and low-voltage power cables that complied with safety, performance, reliability and environmental requirements. Its main product lines include copper wire, building wire, low- and medium-voltage power cable, control cable and telecommunication cable. Keystone is a qualified cable supplier to public companies.

Broad Portfolio of Specialty Wire and Cable Solutions from Avient Exhibiting at the Wire 2022 Trade Fair, Düsseldorf From telecoms to specialty aerospace cable, visitors to the Avient booth will discover its broad portfolio of specialty solutions for the most demandi Avient Launches High Performance UV Laser Marking Technology for FEP Wire & Cable