Bergamid A700 G10 H yellow VN8275CF (f1) Dark Blue HIPS STAN-TONE DB-15597 HI LITE BLUE

XBERGAMID B70 G15 U-SO BLACK T 70 X ET SR-3066902 Radar Blue Conc STAN-TONE DB-15597 HI LITE BLUE

PA66 G25 FR grey VN5081CF TRANSL BLUE 632C STAN-TONE DB-15597 HI LITE BLUE

PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS IN (MM) MAX WIDTH IN (CM) FLEXURAL MODULUS Msi (GPa) FLEXURAL STRENGTH ksi (MPa) GLASS % GC-70-UL Glass/Epoxy Any 0.1 (2.5) 17.75 (45) 5.8 (39.99) 210 (1448) 70 GC-66-ULW Glass/Epoxy, 90° Weft Any 0.1 (2.5) 17.75 (45) 4.5 (31.03) 130 (896) 66 GC-70-ULS Glass/Epoxy, 1080 Woven Scrim Any 0.1 (2.5) 17.75 (45) 5.8 (39.99) 210 (1448) 70 GC-70-ULZ Glass/Epoxy Natural 0.04 (1.0) 8.75 (22.2) 6.8 (46.89) 245 (1689) 70 GC-70-ULC Carbon/Epoxy Black 0.04 (1.0) 8.0 (20.3) 19.9 (137.21) 300 (2069) 70 http://www.polyone.com/content/product-selection-help-form BARSTOCK All barstock composites are machined to size with a surface finish prepared to fit customer requirements. STANDARD BARSTOCK PRODUCTS PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS IN (MM) MAX WIDTH IN (CM) FLEXURAL MODULUS Msi (GPa) FLEXURAL STRENGTH ksi (MPa) GLASS % GC-67-UB Glass/Epoxy Black 0.575 (14.6) 11.75 (29.8) 5.8 (39.99) 153 (1055) 67 GC-67-UBZ Glass/Epoxy Black 0.5 (12.7) 8.75 (22.2) 5.8 (39.99) 153 (1055) 67 GC-60-UBC Carbon/Epoxy Black 0.25 (6.35) 4.0 (10.2) 12.5 (86.19) 150 (1034) 60 GC-67-UBW Glass/Epoxy, 90° Weft Blue 0.25 (6.35) 8.75 (22.2) 4.8 (33.10) 150 (1034) 67 http://www.polyone.com/content/product-selection-help-form PULTRUDED PROFILES - TYPICAL PROPERTIES The Glasforms™ pultrusion process creates continuous, constant cross-sectional profiles with consistent, uniform quality and exceptional mechanical performance. Standard and custom shapes and sizes are available with a variety of resins including polyester, vinyl ester, and epoxy, and reinforcements including mat/roving (MR-GFRP) or unidirectional (U-GFRP) fiberglass, or high performance unidirectional carbon fiber.

GUIDANCE $800 $754 Guidance Actual $128 $123 Guidance Actual Sales Adjusted EBITDA (in millions) $0.56 $0.57 Guidance Actual Adjusted EPS (in millions) 13 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 14 2023 G U I DAN CE Q4 2023 GUIDANCE VS. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 18 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 20 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of October 27, 2023 Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.0 3.4 3.7 2.8 3.7 4.6 5.0 6.9 7.0 8.6 11.1 Av ie nt KW R FU L PP G AV Y R PM FM C H U N C E EC L AS H H XL EM N SC L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of October 27, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 84 82 80 77 88 81 76 70 69 60 54 (6) Av ie nt KW R FU L PP G AV Y R PM FM C C E EC L AS H H XL H U N EM N SC L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of October 27, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $31.18.

XMAXXAM FR H20 H XF V0 BLACK T 70 STAN-TONE DB-15597 HI LITE BLUE

BLUE TINT PB40 BLUE VN-3877 XMAXXAM FR H 12 T/20 V2 BLACK T 70

Homepage // News Center // Premium Sporting Knife Manufacturer Relies on PolyOne’s Bergamid™ Nylon to Extend its Brand Message Designers selected a custom grade of Bergamid™ high performance polymer from PolyOne for the sheath. Photo Caption: Associates in adventure: the Avanona hunting knife and Bergamid high performance polymer from PolyOne.

METHODS LIGHT BLUE MAXXAM C50 H-AS WHITE 70 BR095.6 CMPD (BLUE)

369ULBFF EPIC PANTONE(R) 369 U HO SIM Geon(TM) V1607-70 TOP COAT BELTING - WHITE STAN-TONE DB-15597 HI LITE BLUE