With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 24 Avient reflects 2021 estimated EBITDA of $510M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 9.5 21.1 13.2 13.2 12.0 12.0 9.7 25.2 23.1 14.7 13.5 12.9 11.0 11.0 11.0 10.2 9.6 9.3 9.3 9.1 8.6 8.3 A vi e n t K W R A V Y R P M G C P P P G F U L A L B E C L H X L IF F F M C G R A B N R F O E A S H C E S C L U N V R E M N H U N K R A Median: 11.0xMedian: 12.6x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 25 Avient reflects 2021 estimated EBITDA of $580M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 9.5 18.5 15.1 15.1 14.0 11.0 10.4 29.5 28.2 23.9 18.7 12.4 12.2 11.1 9.3 9.2 9.2 7.6 7.6 6.0 A vi e n t K W R P P G A V Y R P M F U L G C P A L B H X L E C L IF F F M C B N R A S H S C L E M N U N V R K R A C E H U N Median: 11.1xMedian: 14.6x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 28 Avient reflects 2021 estimated EBITDA of $560M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 10.2 17.7 16.0 14.9 14.6 11.6 11.1 26.7 24.0 22.8 14.3 12.7 11.5 11.2 11.1 11.0 10.3 10.1 9.5 9.4 8.3 7.0 A vi e n t K W R A V Y R P M P P G G C P F U L A L B H X L E C L IF F F M C B N R A S H G R A F O E S C L E M N U N V R C E K R A H U N Median: 11.1xMedian: 14.8x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

With the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 33 Avient reflects 2021 estimated EBITDA of $580M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 11.4 20.2 16.7 16.5 14.7 12.0 10.8 40.7 29.9 26.2 13.2 12.4 11.0 10.9 9.1 9.0 7.5 6.5 A vi e n t K W R P P G A V Y R P M F U L G C P A L B H X L E C L A S H F M C B N R S C L U N V R E M N C E H U N S U M M A RY: W H Y I N V E S T I N AV I E N T ?

With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 28 Avient reflects 2021 estimated EBITDA of $560M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 10.4 18.2 16.0 15.5 15.3 11.3 11.0 29.7 26.5 23.5 18.2 13.4 11.9 11.9 11.7 10.5 10.4 10.3 10.1 9.7 7.7 6.5 A vi e n t K W R A V Y P P G R P M F U L G C P H X L A L B E C L IF F F M C B N R A S H G R A E M N F O E S C L U N V R C E K R A H U N Median: 11.7xMedian: 15.4x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

GHG Emissions (MT) Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) Greenhouse Gas Emissions Intensity (MT 1 & 2 GHG/ MT Production) 0 60,000 120,000 180,000 240,000 300,000 2016 2017 2018* 2019* .45 .40 .35 .30 .25 .20 .15 .10 .05 0 .43 .35 .38 .34 Total Energy (GJ) Energy Intensity (MWh/MT Production) Total Energy 0 200,000 400,000 600,000 800,000 1,000,000 2016 2017 2018 2019 1.10 1.00 .90 .80 .70 .60 .99 .86 .91 .85 *Excludes divested PP&S segment and is consistent with the GHG Protocol Corporate Accounting and Reporting Standard. More recently, with the divestiture of the PP&S segment in 2019 and the acquisition of Clariant Masterbatch in 2020, we have fundamentally repositioned our portfolio to that of a true specialty enterprise—from which we can springboard to even greater heights in the future. EBITDA as % of Revenue 2019 Pro Forma Color, Additives & Inks 15.2% Specialty Engineered Materials 15.2% Distribution 6.4% Avient 11.1% 0% 20% 40% 60% 80% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2019 PF** $14M $117M $273M $500M Adjusted EBITDA* from Specialty Platform % o f A d ju st e d E B IT D A * 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% 0 10 20 30 40 50 0 10 20 30 40 50 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 E n d M a rk e t R e v e n u e a s a % o f T o ta l 8% 10% 4% 20% 18% 12%E n d M a rk e t R e v e n u e a s a % o f T o ta l 66% HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 78 https://www.avient.com/company/policies-and-governance/code-conduct *Avient Sustainable Solutions definitions aligned with F TC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) 2016 2017 2018 2019 Revenue from Sustainable Solutions* 2016–2019 Lightweighting Reduced Material Requirements Eco-conscious Bio-derived Content Reduced Energy Use Volatile Organic Compound Reduction Recyclability Renewable Energy Applications $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Sustainable Products Performance 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.

GHG Emissions (MT) Greenhouse Gas Emissions (MT Scope 1 & 2 GHG) Greenhouse Gas Emissions Intensity (MT 1 & 2 GHG/ MT Production) 0 60,000 120,000 180,000 240,000 300,000 2016 2017 2018* 2019* .45 .40 .35 .30 .25 .20 .15 .10 .05 0 .43 .35 .38 .34 Total Energy (GJ) Energy Intensity (MWh/MT Production) Total Energy 0 200,000 400,000 600,000 800,000 1,000,000 2016 2017 2018 2019 1.10 1.00 .90 .80 .70 .60 .99 .86 .91 .85 *Excludes divested PP&S segment and is consistent with the GHG Protocol Corporate Accounting and Reporting Standard. More recently, with the divestiture of the PP&S segment in 2019 and the acquisition of Clariant Masterbatch in 2020, we have fundamentally repositioned our portfolio to that of a true specialty enterprise—from which we can springboard to even greater heights in the future. EBITDA as % of Revenue 2019 Pro Forma Color, Additives & Inks 15.2% Specialty Engineered Materials 15.2% Distribution 6.4% Avient 11.1% 0% 20% 40% 60% 80% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2019 PF** $14M $117M $273M $500M Adjusted EBITDA* from Specialty Platform % o f A d ju st e d E B IT D A * 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% 0 10 20 30 40 50 0 10 20 30 40 50 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 E n d M a rk e t R e v e n u e a s a % o f T o ta l 8% 10% 4% 20% 18% 12%E n d M a rk e t R e v e n u e a s a % o f T o ta l 66% HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 78 https://www.avient.com/company/policies-and-governance/code-conduct *Avient Sustainable Solutions definitions aligned with F TC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) 2016 2017 2018 2019 Revenue from Sustainable Solutions* 2016–2019 Lightweighting Reduced Material Requirements Eco-conscious Bio-derived Content Reduced Energy Use Volatile Organic Compound Reduction Recyclability Renewable Energy Applications $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Sustainable Products Performance 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.

Financials are pro forma for the acquisition of Dyneema® and potential divestiture of Distribution Avient Specialty Formulators Other Specialty / Chemical Companies 45 Source: Peer data per Bloomberg market data as of April 21, 2022 Total Enterprise Value / NTM EBITDA With the Dyneema and Clariant Color business acquisition and divestment of the PP&S business, along with the proposed sale of our Distribution business, our exposure is now concentrated in less-cyclical and high-growth markets.

With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 31 Avient reflects 2021 estimated EBITDA of $580M O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 9.5 18.5 15.1 15.1 14.0 11.0 10.4 29.5 28.2 23.9 18.7 12.4 12.2 11.1 9.3 9.2 9.2 7.6 7.6 6.0 A vi e n t K W R P P G A V Y R P M F U L G C P A L B H X L E C L IF F F M C B N R A S H S C L E M N U N V R K R A C E H U N Median: 11.1xMedian: 14.6x S U M M A RY: W H Y I N V E S T I N AV I E N T ?

PROXY SUMMARY Company Operating Performance PolyOne again delivered earnings growth in 2017, driven by broad-based organic revenue growth of 7% and record- setting performances from our Color, Additives and Inks (“CAI”), Performance Products and Solutions (“PPS”) and Distribution (“POD”) segments. Record performance in our CAI, PPS and POD segments, which delivered operating income of $138.6 million, $77.1 million and $72.6 million, respectively, in 2017. Strong organic revenue growth and record operating income in CAI, PPS and POD, along with lower share count and taxes, contributed to an 8% and 7% increase in earnings per share and adjusted earnings per share, respectively.