PolyOne Corporation To Host Investor Day PolyOne To Hold Fourth Quarter 2017 Conference Call PolyOne Launches New Hammerhead™ Marine Composites

PolyOne Hires Cathy K. PolyOne Geon™ HC Solutions Stand Up to Medical Disinfectants Replaces Lead with Trilliant™ Radiation Shielding from PolyOne

PolyOne Designs LED Lighting Innovations with Flame Retardant Polymer Solutions PolyOne to Begin Thermoplastic Elastomer Production in India PolyOne Expands Lineup of Pre-Certified Biocompatible Healthcare Colorants and Additives

PolyOne Receives Innovation Awards for Pioneering Metal Replacement Projects PolyOne Highlights Advanced Packaging Technologies at PACK EXPO 2014 PolyOne To Present at Baird’s 2014 Industrial Conference

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. The Company acquired the Clariant Color business on July 1, 2020.

HVAC Thumb Wheel and Vent NEW ENERGY VEHICLE OEM H V A C T H U M B W H E E L & V E N T • Reliable sealing performance • Excellent abrasion resistance • Good bonding with PA6 • Formulated a TPE with good sealing and insulation for gaskets within the vent to minimize air and moisture leaks, improving the overall efficiency and performance of the HVAC system • Provided a solution that resisted wear, abrasion, and impact to enhance the longevity of components Versaflex Thermoplastic Elastomers KEY REQUIREMENTS WHY AVIENT? LEARN MORE https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Slide 1: New energy vehicle oem

Satisfied USP Class VI regulatory requirements for skin contact • Delivered a series of soft-touch TPEs capable of meeting the desired feel • Eased production of buckle design with injection moldable solutions Versaflex CL TPEs WHY AVIENT? AVIENT SOLUTION https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Slide 1: EEG Wearable manufacturer

About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions. To access PolyOne’s news library online, please go to www.avient.com/news Media contact Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Attachment 1 Special items (1):

Attachment 1 Special items (1) 1)