ECCOH™ LSFOH 6153/6154 UV Formulations Improved processing speeds & greater gel resistance for optical fiber cables ECCOH™ LSFOH 6153 UV and 6154 UV grades are low smoke, fume, non-halogen material solutions for optical fiber cables with increased processing speeds and greater resistance to chemicals such as gel water blocking compounds, used to protect optical fibers. VALUE ECCOH LSFOH grades can run at high processing speeds of up to 1,000 m/min and, with a much lower melting temperature than PBT alternatives, can greatly enhance manufacturing efficiency. Performing at a lower pressure and with less stress enables a smoother surface finish and can increase processing speeds by up to 15% compared to alternative grades.

PRODUCT SELECTION GUIDE WIRE & CABLE SOLUTIONS Specialty Engineered Materials High performance insulation, jacketing, and cross-web formulations for the wire and cable industry Syncure™ XLPE Cross-linkable Polyethylene Formulations • Ambient curing • Resistant to heat, oil, creep, & abrasion • Low temperature properties • Low capital investment • DBDPE-free grades available • UL/CSA bulletins Maxxam™ FR Flame Retardant Polyolefin Formulations • FEP alternative • Fire performance • UL 444 & plenum yellow card compliance • Low dielectric • High extrusion speeds • Thin wall extrudability Maxxam™ SY Foamable Flame Retardant Formulations • Low dielectric • Uniform cell structure • Crush & heat resistance • Ease of chemical foaming ECCOH™ Low Smoke and Fume Non-Halogen Formulations • Improved fire safety • Low smoke, fume, non-halogen (LSFOH) formulations ECCOH™ XL Cross-Linkable Solutions • Non-halogen, low smoke, toxicity, & corrosiveness • Excellent mechanical & electrical properties • Easily processed • Operating temperature of 90°C • Moisture cure technology Synprene™ Flame Retardant Thermoplastic Elastomers • Low temperature brittleness (LTB) resistance • Easily colored FireCon™ CPE Insulation Jacketing Formulations • Resistance to harsh environments • Sunlight resistance ECCOH™ XL 8148 Non-halogen, low smoke, toxicity, & corrosiveness EN50618 Syncure™ S100FH Horizontal flame UL 44 Syncure™ S100FH-XUV Horizontal flame, UV resistant UL 44 Syncure™ S100FH-UV Horizontal flame, FV-1 flame, UV resistant UL 44, UL 4703 Syncure™ S100FV VW-1 flame UL 44 Syncure™ S100FV-UV VW1, UV resistant UL 44 Syncure™ S112NA Non-flame retardant CSA 22.2 Syncure™ S120NA Non-flame retardant NSF 61 Syncure™ S200FH Horizontal flame, DBDPE-free UL 44 Syncure™ S200FV VW-1, DBDPE-free UL 44 INSULATION FOR POWER CABLE SYSTEMS Low Voltage Power Cables • Resistance to heat, oil, creep, & abrasion • Low capital investment INSULATION & CROSS-WEBS FOR DATA CABLE SYSTEMS Category Cables • FEP alternative • Low dielectric constant • High extrusion speeds & thin wall capability • Flexibility Maxxam™ FR 0521-48 R1 Low smoke & fume, non-halogen UL 444 Maxxam™ FR 0587-21 R3 Halogenated to plenum performance UL 444 Optical Fiber Cables • Resistance to harsh environments, chemicals, & sunlight • Low temperature brittleness (LTB) resistance • Low smoke & toxicity ECCOH™ 6649 UV Low DD Low smoke & fume, non-halogen Meets customer-specific flame requirements Coaxial Cables • Flexibility • Low dielectric constant • Uniform cell structure • Crush & heat resistance Maxxam™ SY 89-22-7 Foamable Meets customer-specific flame requirements JACKETING FOR POWER & DATA CABLE SYSTEMS Low & Medium Voltage Jacketing • Resistance to harsh environments, chemicals, & UV degradation • Low temperature brittleness (LTB) resistance • Low smoke & toxicity • Flexibility • High extrusion speeds • Easily colored FEATURES SUBMARKETS & USES FireCon™ CPE 30-33 RoHS Black Flame retardant, flexible Building & construction, industrial, FireCon™ CPE 37-36 RoHS Black Flame retardant, flexible Building & construction, industrial, FireCon™ CPE 30-20 RoHS Natural Flame retardant, flexible Building & construction, industrial, ECCOH™ 5549 UV Low smoke & fume, non-halogen, flame retardant Building & construction, industrial ECCOH™ 6649 UV Low DD Low smoke & fume, non-halogen, flame retardant Optical fiber, ducts ECCOH™ 5981 UV Low smoke & fume, non-halogen, flame retardant Industrial, Teck 90 wire Synprene™ RT5180 Flame retardant, LTB resistance Building & construction, industrial Synprene™ RT5180UV Flame retardant, LTB resistance Building & construction, industrial Synprene™ RT3870M Flame retardant, LTB resistance Building & construction, industrial 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

Offering premium blue jean stain resistance on par with silicone, this material increases design freedom, boosts speed to market capabilities, and enhances supply chain flexibility at a significantly reduced cost. Increase speed to market – Avient TPEs have a shorter lead time than silicone and can be processed quickly on high speed injection molding equipment.

Device designs are changing to improve high-speed performance and network connectivity to support faster speeds, higher capacity, and lower latencies for customers. KEY CHARACTERISTICS • Enables excellent permittivity and low-loss performance for high-speed signal transmission and connectivity • Delivers lower Dk and Df performance compared to standard TPEs • Provides excellent physical properties, UV resistance and aesthetics INDUSTRIES & APPLICATIONS Versaflex CE 3140 TPEs are formulated for use in phone cases to minimize signal loss and enable high-speed connectively for 5G devices to deliver a seamless experience for consumers.

ATTENDANCE AND PARTICIPATION Our Annual Meeting will be conducted on the internet via live webcast. Abernathy Retired Chairman and Chief Executive Officer of Halyard Health, Inc., a medical technology company that focuses on eliminating pain, speeding recovery, and preventing infection for healthcare providers and patients worldwide. We first reviewed proxy statement disclosures of a peer group of similarly-sized United States based companies as a market check with respect to the compensation for our senior executives.

Competition is based on service, performance, product innovation, product recognition, speed, delivery, quality and price. Our Internet address is www.polyone.com. Our manufacturing capabilities are targeted at meeting our customers’ demand for speed, flexibility and critical quality.

£ Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. You may also submit your proxy by telephone or over the Internet. Instructions for voting by telephone and over the Internet are printed on the proxy cards.

Check one): Large accelerated filer Accelerated filer Non-accelerated filer Smaller reporting company (Do not check if a smaller reporting company) Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Our manufacturing capabilities are targeted at meeting our customers’ demand for speed, flexibility and critical quality. Our Internet address is www.polyone.com.

Ideal applications include antennas, base stations, resonators, lenses, automotive radar, IoT (Internet of Things) devices, and service providers’ equipment that directly serves end-users, such as routers and modems.

Kunkle Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be held on May 14, 2020: The proxy statement, proxy card and annual report to shareholders for the fiscal year ended December 31, 2019 are available at our Internet website, www.polyone.com, on the “Investor Relations” page. PROXY SUMMARY VOTING AND MEETING INFORMATION Attendance and Participation Who is Eligible to Vote Shareholders of Record f fBeneficial Owners of Shares Held in Street Name Advance Voting Methods www.proxyvote.com OVER THE INTERNET BY TELEPHONE BY MAIL Each shareholder’s vote is important. Please submit your vote and proxy by telephone or over the Internet, or complete, sign, date and return your proxy or voting instruction form.