We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT MASTERBATCH Key Financial Data (1) 2021E Sales $4.3 billion 2021E EBITDA $560 million 2021E Free Cash Flow $275 million 88% of EBITDA from specialty applications (1) As of April 30, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 7 CLARIANT COST SYNERGIES • On-track to realize $45 million of expected synergies in 2021 – up from previous estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50MM by 2025 The complementary aspects of our combined businesses are unquestionable. Operating Income $3,783 $4,100 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,300 $308 $360 $308 $410 $1.93 $2.40 $1.93 $2.80 (1) (1)(1) (1)(1) (1) $442 $457 $560 $1.74 $1.93 $2.80 FULL YEAR 2019 – 2021 ORGANIC GROWTH 23 Sales Adjusted EBITDA $3,981 $3,783 $4,300 + 8% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 27% + 61% 24 BALANCE SHEET • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x Net Debt / Adjusted EBITDA ($ in millions) 2021E Adjusted EBITDA 560$ Free Cash Flow 275$ Total Debt 1,860 Less: Cash (800) Net Debt 1,060$ 2021E Net Debt / Adjusted EBITDA 1.9x (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition PEER COMPARISONS 25 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

MINE SAFETY DISCLOSURES Not applicable. Environmental, Health and Safety 4. MINE SAFETY DISCLOSURES PART II ITEM 5.

Animal Testing Policy AVIENT CORPORATION AND SUBSIDIARIES In the normal course of doing business, Avient is required to conduct testing to ensure the safety of its products. Avient is committed to replacing, reducing and refining the use of animal testing by applying the following practices: • Replace – Before any vertebrae testing, Avient will investigate the use of alternative methods and approaches, including use of data that is already publically available, computational toxicology models and read-across to available data for similar substances Reduce – Avient will only consider animal testing if it is a legal requirement, or to ensure the safety of our products, when no suitable alternatives are available.

SAFETY & HEALTH POLICY Avient Corporation believes that safety and health are the highest corporate priority. As a member of the American Chemistry Council, we have adopted Responsible Care® Guiding Principles and the Process Safety Management Practices to continuously guide our efforts to improve safety performance. Our practices reinforce these imperatives, and our commitment to excellence in safety and health is absolute.

PRODUCT OVERVIEW & SELECTION GUIDE INTRODUCING GRIDCORE™ COMPOSITE UTILITY POLES FOR ELECTRIC POWER DISTRIBUTION GridCore™ Composite Utility poles from Avient are engineered to enhance grid resilience as a superior alternative to wood, steel, or concrete electric distribution poles and structures. GridCore FRP Pole Southern Yellow Pine Equivalent Wood Pole Nominal Fiber Stress, F (psi) 45,000 8,000 NESC constructiona Grade B Strength factor, ɸa 1.0 0.65 Modulus of Elasticity, Eb (106 psi) 5.00 2.13 Estimated Density (lb/ft3) 120 65 DESIGN PARAMETERS a Per NESC Table 261-1 b Wood data are per ANSI O5.1-2022 Table 1. FRP data are from tests--nominal fiber stress is at 5% LEL; modulus of elasticity is at mean.

It was first commercially used in the 1970’s as a replacement for steel in racing tires. Abrasion  Yarn on Yarn Abrasion Ultraviolet (UV) Flame  Chemical (Acid) Chemical (Alkali) Chemical (Organic Solvent) P O X P P P P This data is provided for informational purposes only, and does not constitute a specification. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

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