DK GREY 424 POM F LT GREY 421 POM F

The figure below illustrates the effect of shear rate on the viscosity of GLS styrenic TPEs (measured at 390°F (200°C)). Spiral flow tests performed using 0.0625" thick x 0.375" wide channel at 400°F.

F-COOL GREY 10C W/UV F- COOL GREY 10C W/UV

NON-SHRINK BLACK PP F NON-SHRINK BLACK PP F V2

AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) J U LY 2 7 , 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. GUIDANCE (TOTAL COMPANY) 8 15.4% 15.9% Guidance Actual Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE (TOTAL COMPANY) 9 ($ millions) CAI: Price / Mix 7) Deflation 11) SEM: Price / Mix 2) Deflation 6) Net Price Benefit 26) Wage and Energy Inflation (10) Cost Reductions 13) FX (2) Q2 2023 Actual $131) Adjusted EBITDA Q2 2022 Pro Forma $ 172) Demand (68) • Demand conditions vs. expectations: US & Canada LATAM EMEA Asia • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2023 SEQUENTIAL SALES BY REGION Q 2 2 0 2 3 v s . Avient reflects 2023 adjusted EBITDA guidance of $525M and estimated run-rate CAPEX of $110M. 2023E (%) 23 79 90 84 83 76 73 88 82 77 74 72 67 57 20 A vi en t K W R P P G F U L A V Y R P M F M C C E H X L E C L A S H H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of July 21, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $525M and closing share price of $40.93.

Microsoft PowerPoint - AVNT Q2 2021 Earnings Presentation - Website AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 1 R E S U LT S (NYSE: AVNT) J U LY 3 0 , 2 0 2 1 DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 23 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Formulators Other Chemical/Specialty Companies 2 2 2 2 3 3 3 4 3 4 4 5 5 5 5 5 6 7 27 A vi e nt A vi e nt ( E xc l. D is t. ) K W R P P G A V Y F U L R P M G C P H X L F M C H U N IF F E C L A S H K R A E M N C E S C L A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of July 28, 2021 Avient reflects 2021 estimated revenue of $4,650M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators.

Reduce Scope 1 & 2 greenhouse gas emissions by 35%. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 26 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Formulators Other Chemical/Specialty Companies 2 3 2 2 2 3 3 4 3 3 3 4 4 5 5 5 6 7 7 8 24 A vi en t A vi en t (E xc l. D is t. ) K W R R P M P P G A V Y F U L G C P IF F H X L F M C F O E H U N E C L K R A E M N A S H C E S C L G R A A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of April 27, 2021 Avient reflects 2021 estimated revenue of $4,300M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators.

• Stable and controlled dielectric constant - from 2.6 to 23 • Very low losses even at mmWaves • Isotropic material - no glass fibers • Can be injection molded and machined APPLICATION BULLETIN STABLE RF PROPERTIES OVER A WIDE FREQUENCY RANGE 0,0 2,0 4,0 6,0 8,0 10,0 12,0 0 10 20 30 40 50 60 D ie le ct ri c co ns ta nt F requency [GHz ] PR E PE RM® PPE 95 0 PR E PE RM® PPE 80 0 PR E PE RM® PPE 44 0 PR E PE RM® PPE 32 0 PR E PE RM® PPE 26 0 LOW LOSSES UP TO mmWAVE FREQUENCIES* BATCH-TO-BATCH STABILITY DURING PRODUCTION * Measurements performed at VTT Technical Research Centre of Finland Ltd in 2018. Di el ec tr ic co ns ta nt Lo ss ta ng en t Di el ec tr ic co ns ta nt Frequency [GHz] Frequency [GHz] Pallet number (1250 kg/pallet) PREPERM™ PPE950 PREPERM™ PPE800 PREPERM™ PPE440 PREPERM™ PPE320 PREPERM™ PPE260 -- Dielectric constant target -- +/- 2% 3,76 3,78 3,80 3,82 3,84 3,86 3,88 3,90 3,92 3,94 0 1 2 3 4 5 6 7 8 D ie le ct ri c co ns ta nt P a llet number (1250 k g/pa llet ) Die le ctric cons ta nt ta rge t +/- 2 % 0,000 0,002 0,004 0,006 0,008 0,010 0 10 20 30 40 50 60 Lo ss t a ng en t F requency [GHz ] PR E PE RM® PPE 95 0 PR E PE RM® PPE 80 0 PR E PE RM® PPE 44 0 PR E PE RM® PPE 32 0 PR E PE RM® PPE 26 0 0,000 0,002 0,004 0,006 0,008 0,010 0 10 20 30 40 50 60 Lo ss t a ng en t F requency [GHz ] PR E PE RM® PPE 95 0 PR E PE RM® PPE 80 0 PR E PE RM® PPE 44 0 PR E PE RM® PPE 32 0 PR E PE RM® PPE 26 0 0,000 0,002 0,004 0,006 0,008 0,010 0 10 20 30 40 50 60 Lo ss t a ng en t F requency [GHz ] PR E PE RM® PPE 95 0 PR E PE RM® PPE 80 0 PR E PE RM® PPE 44 0 PR E PE RM® PPE 32 0 PR E PE RM® PPE 26 0 Copyright © 2022, Avient Corporation.

TIER 2 SUPPLIERS P A N E L S F O R O F F - R O A D V E H I C L E S • Transfer OEM-approved materials from North America to manufacturers in Europe • Help manufacturers avoid cash flow issues on small lot orders • Managed REACH qualification for 10 OEM- approved materials • Optimized logistics so manufacturers could purchase small lots 10 engineered material and Masterbatch solutions KEY REQUIREMENTS WHY AVIENT?

PDI) on extruded profiles 2 ASTM D-638 3 ASTM 256 4 ASTM D-648 66 psi, unannealed, 0.125" 5 Savings depends on profile size and production volume Acrylite is a registered trademark of Evonik Performance Materials Lens Performance Resilience™ LS Frost PVC Acrylite® Satinice Frost PMMA Light Transmission1 at 0.060" (1.5mm) 83% Low Diffusion 78% Medium Diffusion 75% High Diffusion 81% Low Diffusion Diffusion Half Power Angle (DLD) 26° Low Diffusion 41° Medium Diffusion 58° High Diffusion 26° Low Diffusion Tensile Strength2 Tensile Modulus2 Tensile Elongation (break)2 7,360 psi 400,000 psi 20% 7,330 psi 330,000 psi 43% Flammability (UL 94) V-0 @ 1.5mm 5VA @ 2.0mm HB @ 1.6mm Notched Izod Impact (73°F)3 2.3 ft-lb/in 0.6 ft-lb/in Heat Deflection Temperature4 157°F/69°C 182°F/83°C UV Stability Good Excellent Chemical Resistance Excellent Good Typical Lens Profile Cost 10–15% Savings5 Baseline 1.866.POLYONE www.polyone.com Copyright © 2018, PolyOne Corporation.