GUIDANCE DEBT / LEVERAGE R EDUCTION • Completed sale of Distribution and paid down $750M of debt in November • Strong free cash flow in fourth quarter reduced leverage and enabled paydown of additional $200M of debt • Fixed/Floating Debt Ratio 63/37 • Proven track record of deleveraging following acquisitions through consistent free cash flow generation $725 $725 $725 $575 $500 $400 $600 $525 $425 $650 $650 $650 $600 $2.40B $2.20B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes After Distribution Divestiture Year-End 4 Year-End Leverage 3.8x 3.1x 2.9x 2023 Notes After Avient Protective Materials Acquisition $3.15B 20 22 TRA NSF OR MATI ONAL PORTFOLI O ENHA NC EMENTS 5 EBITDA margins expanded from 12% to 16% Diversified end markets with reduced exposure to more cyclical industries Dyneema® Acquisition $1.48B acquisition strengthens composites platform Significantly improved EBITDA margins $950M divestiture results in 100% specialty sales Strong exit multiple of 10x TTM EBITDA despite market volatility Distribution Divestiture Improved Portfolio G ROW I NG C OM PO SI T ES P LAT F OR M C O NT R I BU TI O NS TO S EM S EG ME NT 6 Note: 2022 is pro forma for Avient Protective Materials 2016 Sales 2022 Sales Advanced Composites 51% $560M $1,300M Advanced Composites 9% C O M P O S I T E S P O R T F O L I O D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D T A P E S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 7 ADVA NC ED C OM POSI TES PERFORMA NCE 8 (1) Pro forma for the acquisition of Avient Protective Materials Sales $51 $84 $212 $668 2016 2018 2020 2022 $4 $10 $41 $169 2016 2018 2020 2022 EBITDA (1) (1) ($ in millions) PORTFOLIO EVOLUTION AND EPS EXPANSION 9 Adj. We also monitor earnings (defined as net income from continuing operations) before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA (EBITDA before the impact of special items) as a supplement to our GAAP measures. Reconciliation of Pro Forma Net Debt December 31, 2022 Short-term and current portion of long term debt $ 2.2 Total long-term debt, net 2,176.7 Unamortized discount and debt issuance cost 37.4 Total debt $ 2,216.3 Cash (641.1) Net taxes due from sale of business 105.0 Adjusted cash $ (536.1) Net debt $ 1,680.2 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA $ 283.4 $ 351.5 Special items, before income tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 EBITDA as a % of sales 5.4 % 11.5 % 2 Reconciliation of Adjusted EPS 2006 2018 Net income from continuing operations attributable to Avient common shareholders $ 130.9 $ 161.1 Joint venture equity earnings, after tax (68.5) — Special items, after tax (21.2) 44.6 Special items, tax adjustments (30.0) (10.4) Amortization expense, after tax 1.4 19.5 Adjusted net income from continuing operations attributable to Avient common shareholders $ 12.6 $ 214.8 Diluted shares 92.8 80.4 Adjusted EPS attributable to Avient common shareholders $ 0.14 $ 2.67 Three Months Ended Year Ended Year Ended Reconciliation of Pro Forma Adjusted Earnings per Share December 31, 2022 December 31, 2021 Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ 82.8 $ 151.8 Special items, after tax 38.3 116.2 50.0 Amortization expense, after-tax 14.6 49.0 44.9 Adjusted net income from continuing operations excluding special items 35.9 248.0 246.7 Pro forma adjustments* 2.5 13.6 9.9 APM pro forma amortization expense, after tax* — 19.1 21.2 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 $ 280.7 $ 277.8 Weighted average diluted shares 91.7 92.2 92.1 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 $ 3.04 $ 3.02 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale.

Continuing operations Continuing operations EBITDA from continuing operations

PolyOne Launches New ECCOH™ LSFOH Grades for Optical Fiber Cables McHENRY, Ill. – June 15, 2020 – PolyOne today announced that select OnFlex™ thermoplastic elastomers (TPEs) are now being manufactured in North SHANGHAI, China – May 15, 2020 – PolyOne today launched a new functional additive for protective face masks as part of its Fiber Solutions portfo

This is an exciting year to exhibit at the Impressions Expo, as our screen printing inks portfolio continues to evolve with future generations in mind,” said Tito Echiburu, general manager, Avient Specialty Inks. From eco-conscious inks to a refreshed look for one of our most iconic, classic brands, the Avient Specialty Inks team is pleased to continue to offer innovative and inspired solutions.” Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility

Fiber optic cable rendering by Avient Design The telecommunications industry is poised for significant growth through 2025, and fiber optic cables are critical infrastructure components. Mordor Intelligence – Global Fiber Optic Cable Market (2021 – 2026)

CASE STUDY: FIBER-LINE™ HIGH PERFORMANCE ENGINEERED FIBERS Ch all en ge A cc ep te d. INNOVATIVE CARBON FIBER SOLUTIONS FOR SG PIPE REPLACEMENT To learn more about Fiber-Line high performance engineered fibers, visit fiber-line.com. THE SOLUTION Avient worked with the company to develop a novel reinforcement material comprised of Avient Fiber-Line™ carbon fiber tows in which the filaments were manipulated to increase strength and improve abrasion resistance.

NYSE: POL) today announced that its continued investment in outdoor high performance design and materials support is enabling sporting, hunting, powersports, and paddlesports equipment manufacturers to bring improved products to market faster and more efficiently. Combined with our portfolio of advanced composites and polymer formulations, we're helping customers to create lighter weight, higher performing products where failure is not an option." As we continue to invest in design and R&D resources, outdoor equipment makers are leveraging our considerable insights, innovative technologies, and collaborative approach to drive success."

Therma-Tech™ Thermally Conductive Formulations are engineered to combine the heat transfer, dissipation, and cooling capabilities of metals with the design freedom, weight reduction, and cost advantages of thermoplastics. The design and lightweighting benefits of thermoplastics with the conductive performance of metal Engineered with short fiber reinforcements to provide precise levels of electrical conductivity

driven by demand for sustainable solutions, healthcare applications and composites technologies." continued. Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility

U TG ® H U N T I N G & S H O OT I N G S P O RT S G U N M A G A Z I N E H O U S I N G • Good dimension stability with low warpage at different temperature ranges (70˚C, room temperature, -40˚C) • Good appearance with less glass fiber exposure • Provided durable and impact-resistant glass fiber reinforced formulation with excellent surface finish and good dimensional stability for smooth operation • Passed all temperature durability and drop tests to confirm use in outdoor environments • Collaborated with customer via technology services to accelerate product development Bergamid™ Customized Polyamide Formulation KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/short-fiber-reinforced-formulations