KEY BENEFITS Avient’s stain-resistant concentrates provide the following benefits: • Efficient, long-lasting stain release properties with no impact on yarn spinnability • Innovative non-fluorine formulation • Suitable for POY (DTY; ATY) and BCF with processing temperatures up to 300°C • Can be combined with color into a single product for convenience • Compatible with bath-dyeing and piece-dyeing • Developed for spin-dyeing—a waterless one-in- one process to dye and enhance the performance of synthetic fibers • Product guidance and technical assistance from our experts 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

THE IMPACT The MPS incorporates Avient’s custom-formulated GlasArmor ballistic panels that meet Level 3 protection under Underwriters Laboratories (UL) 752 standards for ballistic resistance.

Composites is a high-growth area where we’ve invested, such as in January when we purchased Fiber-Line, a global leader in customized engineered fibers and composite materials that serves the fiber optic cable, oil & gas, industrial and consumer industries. Plastic waste is an issue impacting our world, and we were very proud to have joined the Alliance to End Plastic Waste (AEPW) in 2019 as a founding member. Impact of Our Performance on Named Executive Officer 2019 Compensation 2019 Annual Incentive Program Name Title 2019 Annual Incentive Program Payouts Named Executive Officer 2019 Target Opportunity ($) Payout (%) Payout ($) g 2019 Long-Term Incentive Program 2017 – 2019 Cash-Settled Performance Units Performance Measure: Adjusted EPS Performance Periods Weighting Target Result Payout % Our Director Nominees and Committee Membership Name Age Director Since Principal Position Notable Skills and Experiences Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC* EH&SC Average Tenure Average Age Gender Diversity 6 60 30% Name Age Director Since Principal Position Notable Skills and Experiences Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC* EH&SC Governance Highlights Director Independence Independent Lead Director Board Oversight of Risk Management Stock Ownership Requirements Board Practices PROXY STATEMENT POLYONE CORPORATION PolyOne Center 33587 Walker Road Avon Lake, Ohio 44012 PROXY STATEMENT Dated March 30, 2020 PROPOSAL 1 — ELECTION OF BOARD OF DIRECTORS Our Board recommends a vote FOR all the nominees listed below.

We manage training and development through global programs and technology, to provide a consistent and high-quality experience for associates. It drives the innovation that earns us leadership positions in the markets we serve and underpins the high level of respect we show each other every day. Through our design expertise and material science, we positively impact and enable our customers’ products in nearly every end market.

High fatigue strength & stress resistance Gordon Composites™ Molded Unidirectional Thermoset Barstock provided a corrosion-proof custom-shaped compression molded spring capable of deep deflection and high fatigue resistance for extended product life

High wear resistance polymers High Performance Clear Thermoplastics Elastomer

X HC 93293#SR-03215-010 HP2 IP High Blue X HC 93293#SR-03215-005 HP IP High Blue

343.00 PFA340 CC HIGH BLACK 343.56 PFA340 CC HIGH MCSL BLUE

Withdrawal & Consumed from High Water Stress Areas (% of Total) Facilities externally certified to ISO50001 (# of high energy sites)⁴

technology HINGE MANUFACTURER S P E C I A L T Y F U R N I T U R E F I T T I N G • High dimensional stability • Low slip effect • No squeaking noises • Very low wear properties • High process stability • Provided high quality solutions for mass production with high processing performance • Met customer’s tribological requirements over the entire product life cycle of more than 20 years • Customized tailor-made solutions for specific applications that are constantly being adapted to new requirements LubriOne™ Internally Lubricated Formulations KEY REQUIREMENTS WHY AVIENT?