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MC-87002PP CEMENT GRAY 1% MC-90351PCR VICTORIAN PURPLE COLOR 0521 STAN-TONE DB-15597 HI LITE BLUE

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). Q 3 2021 P E RFO R MA N CE U P DAT E $74 $99 2020 2021 $0.46 $0.70 2020 2021 Q3 2021 PERFORMANCE (TOTAL COMPANY) 4 Sales Adjusted Operating Income $925 $1,220 2020 2021 + 32% Adjusted EPS + 34% + 52% (in millions) (in millions) Q3 2021 SEGMENT PERFORMANCE 5 CAI $494 $587 Sales ($ in millions) SEM Distribution $51 $67 Operating Income +19% +31% $277 $439 Sales $18 $24 Operating Income +58% +33% (1) $174 $234 Sales $25 $32 Operating Income +34% +28% SPECIALTY EBITDA MARGIN EXPANSION 6 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Color acquisition 15.3% 15.2% 16.2% 17.6% 2018 2019 2020 YTD 2021 14.8% 15.2% 17.6% 18.4% 2018 2019 2020 YTD 2021 (1) SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Color synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements CAI EBITDA MARGIN EXPANSION 7 Legacy CAI 18.9% 18.9% 19.8% 2019 2020 YTD 2021 Legacy Clariant Color 11.9% 13.8% 15.7% 2019 2020 YTD 2021 • Synergy capture driving margin improvement • Favorable mix with growth in healthcare, consumer and packaging end-markets • World-class vitality index of 35% represents sales from products introduced in the last five years. This innovation drives performance and is reflective of consistent, strategic investments in technology and people Clariant Color business acquired July 1, 2020 1 1 2 3 5 7 7 7 9 10 30 40 14 25 13 22 35 9 19 13 18 41 Current Additional share needed to reach 2025 target BRAND OWNERS COMMITTED TO INCREASING USE OF RECYCLED MATERIALS 8 Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) (1) Latest year reported.

The beam changes the molecular structure of the additive, causing a color change that results in a permanent marking. Sourcing the additive as a masterbatch, often bundled with colorant, makes it easier to add to your production process.

Humidity and temperature will also affect the discharge colors on the shirt, and may need to be compensated for as well.  Different dye colors will appear different when discharged.

– PolyOne Colorant Chromatics just launched a new chemical foaming solution for fluoropolymer wire insulation that can reduce part density while enhancing the stability and efficiency of the manufacturing process. It’s difficult to minimize the tradeoffs between thermal stability, foaming control and high processing temperatures when applying wire insulation,” explained Barto du Plessis, general manager, PolyOne Colorant Chromatics.

8:00 a.m. to 1:00 p.m. In addition, the company will provide an update on the integration of the Clariant Color business, including future synergy capture, and a financial overview. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com