PolyOne Announces Pricing of Public Offering of Common Shares PolyOne Announces Public Offering of Common Shares PolyOne To Hold Fourth Quarter 2019 Conference Call

PolyOne Launches New Acetaldehyde Process Aid To Enhance rPET Processability PolyOne Launches New ECCOH™ LSFOH Grades for Optical Fiber Cables PolyOne Expands Production of OnFlex™ TPEs to North America

PolyOne OnColor™ Naturals Launched at PCD Paris PolyOne Joins UK Plastics Pact to Advance Circular Economy Goals PolyOne Unveils New Bio-Derived Thermoplastic Elastomers for Overmolding

PolyOne Announces First Quarter 2020 Results PolyOne to Host Investor Conference Call PolyOne Announces Leadership Appointments

PolyOne Announces Michael A. PolyOne Announces First Quarter 2018 Results PolyOne Names Dr.

PolyOne Announces Record First Quarter 2016 Results PolyOne Board of Directors Appoints Robert M. PolyOne Appoints Michael A.

PolyOne Accelerates Design Freedom for Dairy Brands with Novapet PET Light Blocker PolyOne Invests in its GSDI Specialty Dispersions Assets and Technology PolyOne Showcases Industry-Leading Solutions at WIRE 2016

SIDING & CLADDING MANUFACTURER P R O F I L E E X T R U S I O N • Achieve consistent distribution and uniform cell structure • Avoid adverse chemical reactions caused by material incompatibility with PVC formulations • Maintain impact resistance and durability • Attain thermally-stable chemical foaming agent (CFA) and gas decomposition temperatures to avoid manufacturing downtime • Ensure the integrity of color, finish, and aesthetics • Validated performance and compatibility during formulation and testing to confirm material compatibility and consistency • Established processing parameters for real- time precision in temperature, pressure, and extrusion speed • Optimized CFA and process to balance weight reduction and retain mechanical properties and aesthetics Hydrocerol Chemical Foaming Agents KEY REQUIREMENTS WHY AVIENT?

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