Impact on cost of sales Impact on operating income Diluted earnings per common share impact

R A I L C A R M A N U FAC T U R E R D O O R P A N E L • High stiffness-to-weight ratio and improved thermal insulation to incumbent materials • Efficient manufacturing process to ensure quality panel construction and standards • Domestic supply and manufacturing to ensure timely delivery • Reduced component complexity compared to metal • Custom-engineered panel with varying core materials and thicknesses to meet performance requirements • Reliable material supply with product manufactured in United States CRTM™ Composite Sandwich Panels KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION CORROSION & IMPACT RESISTANT LEARN MORE Copyright © 2024, Avient Corporation.

CARPET PRODUCER N Y L O N C A R P E T • Antimicrobial effectiveness for residential and hospital carpets • Suitable for Bulked Continuous Filament (BCF) processed polyamide (nylon) • Limited impact on color • Quick development to address growing market needs for hygienic surface coverings • Developed efficient antimicrobial solution adapted to BCF processing for high-quality yarns • Reduced risk of discoloration with a smartbatch alternative • Leveraged global capabilities to offer quick development, trials and production quantities • Cesa™ Fiber Additives – antimicrobial additives KEY REQUIREMENTS WHY AVIENT?

FITNESS SMARTWATCH BRAND S M A R T W A T C H H O U S I N G • Reduce carbon footprint at least 30% by using bio-based material • Meet physical properties requirements such as impact strength, UV resistance, and thermal resistance • Provide small lot quantity for various colors • Offered bio-based colorants to support carbon footprint reduction • Maintained over 80% of mechanical properties of materials and passed QSUN & QUV test • Offered supply flexibilities in low volume for a high mix of colors OnColor Bio Colorants KEY REQUIREMENTS WHY AVIENT?

Appliance Manufacturer APPLIANCE MANUFACTURER P U S H B U T T O N S • Non-halogen to industry standards • Lower density • Good impact properties • Easy to process • High aesthetics • Provided a non-halogenated solution while improving the performance of the formerly used halogenated grade • Supported the project with various expertise in design, regulatory and technical support • Helped to reduce the system cost and make our customer more competitive in the market Maxxam NHFR Non-Halogen Flame Retardant Polyolefin Formulation KEY REQUIREMENTS WHY AVIENT?

They realized they might be able to shave off even more weight and improve performance by replacing the aluminum braces with a continuous-fiber composite if they could find a material with an exceptional strength- to-weight ratio, high flexural stiffness, good torsional rigidity, and superior fatigue strength. THE IMPACT Finding ways to reduce weight is a high priority for vehicle manufacturers, because lighter weight corresponds to better fuel efficiency for gas-powered vehicles and more miles per charge for electric cars.

Traditionally aluminum or zinc aluminum alloys (Zamak) are used for heat sinks due to their high thermal conductivity, which was also the case at Elausa. However, compared with engineered thermoplastics, these materials have a relatively high density, are more complicated and energy intense to process, and may suffer from corrosion. THE IMPACT Optimizing the part design for Therma-Tech thermoplastics and simulating its temperature distribution and thermal dissipation confirmed its thermal performance would be similar or slightly better compared to the metal originally used.

THE CHALLENGE PVC sheet and profile extrusion processors were looking for ways to hit lower density targets while maintaining a high-quality cell structure. The lower the density that processors used, the more they conceded a high- quality cell structure. THE IMPACT As tests and trials were conducted, it was shown that the Excelite dispersion interacted more intimately and consistently with PVC resin, essentially becoming part of the PVC resin matrix.

Since 2013, the executive leadership selects 14–16 high per forming, high potential associates each year to par ticipate in the NextGen leadership development program. Dyneema® began as an ultra high molecular weight polyethylene (UHMPE fiber). We have completed a water risk evaluation of our manufacturing locations to identify which of them may be impacted by future water scarcity issues. 28% of facilities are in areas currently classified by the World Resources Institute Aqueduct Water Risk Tool as being extremely high or high for baseline water stress.

Unless otherwise stated, Operating Income, EBITDA and EPS figures included in this presentation are adjusted to exclude the impact of special items as defined in our quarterly earnings releases Purchase price multiple rapidly declining on strength of business and synergy capture (1) (1) (1) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition ($ in millions) 7 SEM CAI Avient • Composites and Outdoor High Performance applications drove positive mix within SEM • Clariant Masterbatch synergy realization under way and expected to drive further margin expansion in 2021 • Portfolio transformation to high growth end markets with focus on sustainable solutions megatrend 10.1% 11.8% 2019PF 2020 (1) (1) EBITDA MARGIN EXPANSION Distribution 6.3% 6.0% 15.2% 17.6% 11.1% 12.1% 2019PF 2020PF 14.5% 19.8% 13.5% 16.1% 6.4% 6.3% 15.2% 16.2% (1) (1) Full YearQ4 (2) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (2) Total company reflects adjusted EBITDA margins SPOTLIGHT: COMPOSITES 8 • SEM delivers a record year in 2020 – 13% operating income growth and over 200 bps in margin expansion year-over-year • Prior investments in composites platform and outdoor high performance applications paying off, resulting in substantial growth over the last two years SEM Operating Income (OI % of Sales) ($ in millions) $(0.1) $(1.0) $2.2 $19.1 $26.8 2016 2017 2018 2019 2020 Composites Performance (Operating Income) $83.7 $94.4 2019 2020 (11.2%) (13.3%) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 11 12 13 14 15 16 17 18 19 20 $19 $160 $338 2011 2019 2020 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 11 12 13 14 15 16 17 18 19 20 21E FREE CASH FLOW AND CAPITAL ALLOCATION 9 Free Cash Flow Dividends Share Repurchases Deleveraging 3.5x 2.7x 2019PF 2020PF Growing Dividend Cumulative Buybacks Net Leverage $ B n $ p e r sh a re Cash Generation (1) (1) ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$350MM PAID OVER LAST 10 YEARS ~$338MM 2.7x NET LEVERAGE (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition GREAT PLACE TO WORK! 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.