Department of the Treasury’s Office of Foreign Assets Control, le règlement (UE) 2021/821 du Parlement européen et du Conseil du 20 mai 2021 instituant un régime de l’Union de contrôle des exportations, du courtage, de l’assistance technique, du transit et des transferts en ce qui concerne les biens à double usage (refonte), et toutes les sanctions commerciales promulguées par l'UE (« lois sur le contrôle du commerce »).

Associates Trained in LSS (Cumulative) LSS Projects Completed (Cumulative) 2011 2013 2015 2017 2019 2021 2023 434 996 1,854 2,718 3,161 4,172 323 1,176 2,999 4,544 6,813 7,423 Customer Centric Selling CCS is at the core of how we serve our customers and collaborate with them to solve their most pressing challenges. GRADUATES 331 GRADUATES 148 Leadership Development Training per Participant Over 50 Hours 100 300 500 NextGen & Elevate Program Participants 311 2013 2015 2017 2019 2021 2023 216 125 47 369 479 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 33Sustainability Report | 2023 33 Competency Training In 2023, we launched a global training program focused on understanding the key behaviors in our Competency Model, and how to best leverage them for success in an associate’s current or future role. D ll ar ( $) M il li 2017 2018 2019 2020 2021 2022 2023 $90 from products introduced in the last 5 years 37% of sales Revenue from Sustainable Solutions* Vitality Index Investment in Innovation *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) (1)2020 is Pro Forma to include full year of the Clariant Color business (2)2022 is Pro Forma for the acquisition of APM and the divestiture of Distribution 600 800 1000 1200 1400 2016 2017 2018 2019 2020(1) 2021 2022(2) 2023 $550M $405M $915M $1,135M 8% Organic CAGR Sustainable Solutions represent 90% of the Innovation Pipeline $1,175M $790M $455M $340M HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Sustainability Report | 2023 38 Advancing a Circular Economy As the world continues to shift from operating in a linear economy to a circular economy, Avient is proud to be a part of the solution.

Associates Trained in LSS (Cumulative) LSS Projects Completed (Cumulative) 2011 2013 2015 2017 2019 2021 2023 434 996 1,854 2,718 3,161 4,172 323 1,176 2,999 4,544 6,813 7,423 Customer Centric Selling CCS is at the core of how we serve our customers and collaborate with them to solve their most pressing challenges. GRADUATES 331 GRADUATES 148 Leadership Development Training per Participant Over 50 Hours 100 300 500 NextGen & Elevate Program Participants 311 2013 2015 2017 2019 2021 2023 216 125 47 369 479 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 33Sustainability Report | 2023 33 Competency Training In 2023, we launched a global training program focused on understanding the key behaviors in our Competency Model, and how to best leverage them for success in an associate’s current or future role. D ll ar ( $) M il li 2017 2018 2019 2020 2021 2022 2023 $90 from products introduced in the last 5 years 37% of sales Revenue from Sustainable Solutions* Vitality Index Investment in Innovation *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) (1)2020 is Pro Forma to include full year of the Clariant Color business (2)2022 is Pro Forma for the acquisition of APM and the divestiture of Distribution 600 800 1000 1200 1400 2016 2017 2018 2019 2020(1) 2021 2022(2) 2023 $550M $405M $915M $1,135M 8% Organic CAGR Sustainable Solutions represent 90% of the Innovation Pipeline $1,175M $790M $455M $340M HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Sustainability Report | 2023 38 Advancing a Circular Economy As the world continues to shift from operating in a linear economy to a circular economy, Avient is proud to be a part of the solution.

Sources Cash from Balance Sheet $465 New Senior Unsecured Notes 650 New Equity 450 Total Sources $1,565 Uses Clariant Masterbatch $1,500 Clariant India Masterbatch 60 Less: Lease Adjustment (113) Net Purchase Price $1,447 Net Cash Acquired 57 Fees, Expenses & OID 61 Total Uses $1,565 ($ Millions) Cash and Cash Equivalents $370 $450M Senior Secured ABL Revolver - Senior Secured Term Loan B due 2026 624 Other Debt 25 Total Senior Secured Debt $649 5.25% Senior Unsecured Notes due 2023 $600 New Senior Unsecured Notes 650 Total Senior Debt $1,899 Net Debt $1,529 New Equity $450 Pro Forma Capitalization (1) PF 12/31/2019 $450 $600 $624 $743 2019 2020 2021 2022 2023 2024 2025 2026 A T T R A C T I V E F I N A N C I N G S T R U C T U R E Attractive Debt Maturity Profile Existing Revolver Existing Senior Notes Existing Term Loan B New Debt Summary Terms on New Debt  $465 million of cash from the balance sheet expected to fund a portion of the purchase price  Bridge financing for remainder fully committed from Citi, Morgan Stanley and Wells Fargo  Permanent financing expected to include a combination of long-term debt and new equity  The timing of the permanent financing is subject to a number of factors, including, but not limited to, market conditions  PolyOne is committed to preserving a strong balance sheet – Target net leverage at close below 3.5x, excluding synergies  Pro forma capital structure positions PolyOne with flexibility to pursue continued growth strategy  New financing expected to have same or better covenant package than existing capital structure  Capital structure would be “covenant lite” Capital Policy  Transaction in line with PolyOne’s disciplined capital allocation policy  Existing PolyOne dividend policy to be maintained  Focus on deleveraging in the near term 2028+ PolyOne Corporation 26 PolyOne Corporation 27 T H E N E W P O L Y O N E : A S P E C I A L T Y G R O W T H C O M P A N Y  Landmark portfolio transformation: > 85% of Adjusted EBITDA from specialty solutions  World-class innovation, technology and service are differentiators  Sustainability initiatives and alignment with megatrends drive above market growth in key end markets and applications:  Capital management is a strength - proven track record of expanding ROIC while increasing invested capital Transaction expected to add $0.85 to pro forma adjusted EPS PolyOne Corporation 28 PolyOne Corporation 29

The tables in the next pages contain all Avient UL 94 recognized color concentrates published on UL prospector until March 2021.

To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation.

Avient 2021 Annual Report—Form 10-K 6-7

Associates Trained in LSS (Cumulative) LSS Projects Completed (Cumulative) 2011 2013 2015 2017 2019 2021 2023 434 996 1,854 2,718 3,161 4,172 323 1,176 2,999 4,544 6,813 7,423 Customer Centric Selling CCS is at the core of how we serve our customers and collaborate with them to solve their most pressing challenges. GRADUATES 331 GRADUATES 148 Leadership Development Training per Participant Over 50 Hours 100 300 500 NextGen & Elevate Program Participants 311 2013 2015 2017 2019 2021 2023 216 125 47 369 479 HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 33Sustainability Report | 2023 33 Competency Training In 2023, we launched a global training program focused on understanding the key behaviors in our Competency Model, and how to best leverage them for success in an associate’s current or future role. D ll ar ( $) M il li 2017 2018 2019 2020 2021 2022 2023 $90 from products introduced in the last 5 years 37% of sales Revenue from Sustainable Solutions* Vitality Index Investment in Innovation *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) (1)2020 is Pro Forma to include full year of the Clariant Color business (2)2022 is Pro Forma for the acquisition of APM and the divestiture of Distribution 600 800 1000 1200 1400 2016 2017 2018 2019 2020(1) 2021 2022(2) 2023 $550M $405M $915M $1,135M 8% Organic CAGR Sustainable Solutions represent 90% of the Innovation Pipeline $1,175M $790M $455M $340M HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Sustainability Report | 2023 38 Advancing a Circular Economy As the world continues to shift from operating in a linear economy to a circular economy, Avient is proud to be a part of the solution.

The tables in the next pages contain all Avient UL94 recognized color concentrates published on UL prospector until March 2021.

INVESTMENT IN COMMERCIAL RESOURCES D R I V E S I N N O VAT I V E P R O D U C T P O R T F O L I O AN D S AL E S G R O W T H 19 160 270 2011 2019 2020E 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 TARGET NET LEVERAGE BY 2021 ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$350MM PAID OVER LAST 10 YEARS RETURNING VALUE TO SHAREHOLDERS 12 Free Cash Flow Dividends Share Repurchases Deleveraging Strong track record of cash generation put to work in M&A and return to shareholders while modestly levered 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 2.9x 2020PF* 2021E Growing Dividend Cumulative Buybacks Net Leverage $ $ p e r s h a re *2020 estimate and Pro forma for acquisition of the Clariant Masterbatch business Cash Generation ~$270MM Another unique value creation lever at Avient is synergy capture with our recent acquisition of Clariant Masterbatch.