EBITDA as % of Revenue 2019 Pro Forma Color, Additives & Inks 15.2% Specialty Engineered Materials 15.2% Distribution 6.4% Avient 11.1% 0% 60% 80% 0% 60% 80% 2005 2010 2015 2019 PF** $14M $117M $273M $500M Adjusted EBITDA* from Specialty Platform o f ju st E B IT D * Specialty EBITDA DistributionJV’s Performance Products & Solutions Specialty Applications * Adjusted EBITDA is EBITDA excluding corporate costs and special items ** 2019 Pro Forma for PP&S Divestiture and Clariant Color & Additive Masterbatch business acquisition with synergies 7% 46% 87% Building & Construction High Growth End Markets A Specialty Transformation Poised for Future Growth 2006 2019 PF** 2006 2019 PF** 38% 5% 22% 50% ** 2019 Pro Forma for PP&S Divestiture and Clariant Color & Additive Masterbatch business acquisition with synergies M ke t ve e a % o f To ta l 8% 10% 4% 18% 12%E M ke t ve e a % o f To ta l 66% Sustainability Report | 2019 78 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) 2016 2017 2018 2019 Revenue from Sustainable Solutions* 2016–2019 Reduced Material Eco-conscious Bio-derived Content Reduced Energy Use Volatile Organic Compound Recyclability Renewable Energy Applications $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Sustainable Products As highlighted in our Products section, Avient has a highly- technical and broad portfolio of materials solutions that help our customers—and our planet—be more sustainable. EBITDA and Adjusted EBITDA are not measures of performance or liquidity under GAAP, and we caution investors that amounts presented in accordance with our definitions of EBITDA and Adjusted EBITDA may not be comparable to similar measures disclosed by other companies, because not all companies calculate EBITDA and Adjusted EBITDA in the same manner.

No C5.1b (C5.1b) Has your emissions accounting methodology, boundary, and/or reporting year definition changed in the reporting year? Change(s) in methodology, boundary, and/or reporting year definition?

EBITDA as % of Revenue 2019 Pro Forma Color, Additives & Inks 15.2% Specialty Engineered Materials 15.2% Distribution 6.4% Avient 11.1% 0% 60% 80% 0% 60% 80% 2005 2010 2015 2019 PF** $14M $117M $273M $500M Adjusted EBITDA* from Specialty Platform o f ju st E B IT D * Specialty EBITDA DistributionJV’s Performance Products & Solutions Specialty Applications * Adjusted EBITDA is EBITDA excluding corporate costs and special items ** 2019 Pro Forma for PP&S Divestiture and Clariant Color & Additive Masterbatch business acquisition with synergies 7% 46% 87% Building & Construction High Growth End Markets A Specialty Transformation Poised for Future Growth 2006 2019 PF** 2006 2019 PF** 38% 5% 22% 50% ** 2019 Pro Forma for PP&S Divestiture and Clariant Color & Additive Masterbatch business acquisition with synergies M ke t ve e a % o f To ta l 8% 10% 4% 18% 12%E M ke t ve e a % o f To ta l 66% Sustainability Report | 2019 78 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) 2016 2017 2018 2019 Revenue from Sustainable Solutions* 2016–2019 Reduced Material Eco-conscious Bio-derived Content Reduced Energy Use Volatile Organic Compound Recyclability Renewable Energy Applications $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Sustainable Products As highlighted in our Products section, Avient has a highly- technical and broad portfolio of materials solutions that help our customers—and our planet—be more sustainable. EBITDA and Adjusted EBITDA are not measures of performance or liquidity under GAAP, and we caution investors that amounts presented in accordance with our definitions of EBITDA and Adjusted EBITDA may not be comparable to similar measures disclosed by other companies, because not all companies calculate EBITDA and Adjusted EBITDA in the same manner.

PolyOne Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) ** Pro Forma for sale of PP&S 2016 2017 2018 30% INCREASE $285M $255M $220M 30% Increase in Revenue from Sustainable Solutions* 2016–2018** Lightweighting Reduced Material Requirements Eco-conscious Composition Bio-derived Content Reduced Energy Use Volatile Organic Compound Reduction Improved Recyclability Renewable Energy Applications Sustainable Products Performance 76 Sustainability Report | 2018 At PolyOne, we strive to create a world-class sustainable organization, by conducting business in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Responsabilità aggiuntive di supervisori e manager di Avient • Date il buon esempio e definite gli standard per un adeguato comportamento in Avient

D ll ar ( $) M il li n 2017 2018 2019 2020 2021 $83 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) ^2020 is Pro forma to include full year of the Clariant Color business Revenue from Sustainable Solutions* 2016–2021 Lightweighting Eco-conscious Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers Recycle Solutions VOC Reduction 2016 2017 2018 2019 2020PF^ 2021 $915M $790M $550M $405M $455M $340M Sustainability Report | 2021 42 Reducing Carbon Footprint What is a carbon footprint*? Sustainability Report | 2021 75 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) ^2020 is Pro forma to include full year of the Clariant Color business Sustainable Solutions As highlighted in our Products section, Avient has a highly- technical and broad portfolio of material solutions that help our customers—and our planet—be more sustainable.

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PolyOne Signs Definitive Agreement to Acquire Clariant Color and Additive Masterbatch Business...

PolyOne Signs Definitive Agreement to Acquire Clariant Color and Additive Masterbatch Business

Central to this effort was the standardization of water stream definitions and reporting frequency, the release of our Position on Water Stewardship and the establishment of our water stress evaluation framework.