Use of Non-GAAP Measures 4POLYONE CORPORATION INPUTS FORMULATION EXPERTISE SERVICE VALUE Base resins Additives Modifiers Pigments Expertise in Polymer Materials, Services and Solutions OEMs Brand Owners Processers Assemblers InVisiO SM Color Services IQ Design Labs LSS Customer First Specialty products & services What We Do Driving customer value 5POLYONE CORPORATION $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 2009 2010 2011 2012 2013 2014 2015 2016* *Recast for DSS in discontinued operations PolyOne At a Glance Performance Products & Solutions 22% PolyOne Distribution 34% Specialty Engineered Materials 18% Color Additives and Inks 26% 2016 Revenue by Segment Adjusted Earnings per Share 2016 Revenue by Geography United States 60% Europe 15% Latin America 9% Canada 7% Asia 10% 6POLYONE CORPORATION 2% 43% 76% 0% 20% 40% 60% 80% 100% 2005 2010 3Q 2017 % o f O p e ra ti n g I n c o m e * *Operating Income excludes corporate charges and special items **LTM 3Q 2017 Specialty OI $5M $87M $275M** JV’s Performance Products & Solutions Specialty MixDistribution Mix Shift Highlights Specialty Transformation Distribution and Contract Manufacturing Businesses 7POLYONE CORPORATION 2014 2015 2016 2017 2014 2015 2016 2017 Driving Growth • Refreshed training curriculum for sales force • Upgraded capabilities to generate and capture new business leads • Expanded R&D resources to focus on key platforms 2014 2015 2016 2017 Investment in Commercial Resources Commercial Resource Additions* Total Sales CallsSales Opportunity Funnel (in billions) *Sales, Marketing & Technology headcount 8POLYONE CORPORATION *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period Proof of Performance & 2020 Platinum Vision 20%+ 20%+ 12 - 14% 6.5 – 7.5% 15% Consistently Deliver Double Digit Annual EPS Growth 2006 YTD 2017 2020 “Where we were” “Where we are” Platinum Vision ROIC* 5.0% 13.8% Operating Income % of Sales Color, Additives & Inks 1.7% 16.4% Specialty Engineered Materials 1.1% 13.1% Performance Products & Solutions 5.5% 11.4% Distribution 2.6% 6.6% 9POLYONE CORPORATION $50 $116 $137 $0 $40 $80 $120 $160 $200 2012 2014 2016 2017 10.8% 11.3% 12.9% 13.8% 10.0% 11.0% 12.0% 13.0% 14.0% 15.0% 2012 2014 2016 3Q 2017 2020 Platinum Vision Free Cash Flow (in millions) ROIC* *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period Free Cash Flow and Improving Returns 15.0% >$200 10POLYONE CORPORATION $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.54 $0.70 $- $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 $0.70 $0.80 $0.90 $1.00 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Annual Dividend 7 Consecutive Years of Increased Dividends 3-Year Dividend Plan  Announced 30% increase to dividend in October 2017, reflecting strong and sustainable cash flow as well as confidence in future earnings growth  Expect to increase annual dividend 60% or more cumulatively over next three years 11POLYONE CORPORATION $767M Returning Cash to Shareholders $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 2016 3Q 2017 Cumulative Share Repurchases (in millions)  Since 2011, we have returned over $950 million to shareholders  $192 million returned through dividends  $767 million returned through share repurchases  Have repurchased 20.8 million shares since early 2013 $767M 12POLYONE CORPORATION  Expanding our sales, marketing, and technical capabilities  Investing in operational and LSS initiatives  ~60 - 70% of capital expenditures fund growth initiatives Organic Growth Acquisitions Share Repurchases Dividends  Targets that expand our: • Specialty offerings • End market presence • Geographic breadth  Growth synergies  Adjacent material solutions  Repurchased 2.0 million shares YTD 2017  Repurchased 20.8 million shares since early 2013  6.5 million shares are available for repurchase under the current authorization  Increased annual dividend by 30% to $0.70 per share, representing the seventh consecutive year of dividend growth Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return 13POLYONE CORPORATION *Specialty Platform revenue from products introduced in last five years Vitality Index Progression* 12% 42% 2006 2016 Target ≥ 35% Innovation Drives Earnings Growth Innovation Pipeline Potential $20 $54 2006 2016 Research & Development Spending ($ millions) Phase 1 Frame Opportunity 12 Projects Phase 2 Build Business Case 10 Projects Phase 3 Prototype 21 Projects Phase 4 Scale-up & Test Market 19 Projects Phase 5 Commercial Launch 10 Projects $500 Million $1.4 Billion $700 Million Total Specialty Addressable Market of over $2.6 Billion 14POLYONE CORPORATION Key Innovation Growth Drivers Composites Barrier Additive Technology Fiber Colorants Flame Retardant Polymers  Increasing regulatory drive for halogen replacements  $400m addressable market  Drive to prevent oxygen, light and UV rays from affecting contents in PET packaging, extending shelf life  $200m addressable market  60% of world fiber consumption is synthetic, need to simplify manufacturing and eliminate waste  $300m addressable market  Polymer formulation and process engineering create a pipeline for next generation materials  Drive to replace aluminum and steel with plastics without compromising on strength 15POLYONE CORPORATION  Providing LSS services to small/medium sized customers  54% of associates trained in LSS, with over 125 active black belts  Have trained over 30 customers in LSS methodology  Providing training in Customer Centric Selling Skills with customers  Providing Industrial design and color services to small/medium sized customers  On time delivery above 95% Strengthening relationships: Customer First Through World-Class Service 16POLYONE CORPORATION  Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strategic reinvestment for growth while returning cash to shareholders  Strong and proven management team driving growth and performance Why Invest In PolyOne?

Strong past performance demonstrates that our strategy and execution are working • Megatrends align with our strengths • Innovation and services provide differentiation, incremental pricing power, and competitive advantage • Strong and proven management team driving growth and performance • Addressable market exceeds $40 billion Page 14 1 Schedule I Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S.

Either party may suspend performance hereunder (except to pay for the Product already received) in the event of: (1) acts of God, fire, explosion, flood, earthquake, storms, or other natural disasters; (2) strikes, lockouts or other industrial disturbances or riots; (3) war, declared or undeclared, or acts of terrorism; (4) compliance with any governmental, provincial, municipal or military law, regulation, order, or rule, foreign or domestic, including priority, rationing, allocation or preemption orders or regulations, or cancellation of Seller’s or Buyer’s license to operate its plant; (5) catastrophic failure of facilities used to manufacture the Product, interruption or shortage of transportation, labor, power, fuel or raw materials; (6) total or partial shutdown due to Seller’s plant turnaround resulting from Items (1)-(5) above; or (7) any other cause or causes of any kind or character reasonably outside the control of the party failing to perform, whether similar or dissimilar from the enumerated causes (a “force majeure”).

Use of Non-GAAP Measures 4POLYONE CORPORATION FORMULATION EXPERTISE SERVICE INNOVATION Expertise in Polymer Materials, Services and Solutions OEMs Brand Owners Processers Assemblers IQ Design Labs InVisiOSM Color Services LSS Customer First Specialty products & services driving customer value What We Do 5POLYONE CORPORATION PolyOne At a Glance 2017 Revenue – $3.2 billion Performance Products & Solutions 21% PolyOne Distribution 34% Specialty Engineered Materials 19% Color Additives & Inks 26% United States 59% Europe 14% Latin America 9% Canada 8% Asia 10% $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 2009 2010 2011 2012 2013 2014 2015 2016* 2017 Transportation 18% Consumer 12% Healthcare 11% Packaging 11% Industrial 16% Building & Construction 12% Wire & Cable 9% Electrical & Electronics 6% Appliance 5% *Recast for DSS in discontinued operations 6POLYONE CORPORATION 2% 43% 76% 0% 20% 40% 60% 80% 100% 2005 2010 2017 % o f O pe ra tin g In co m e* *Operating Income excludes corporate charges and special items Specialty OI $5M $87M $280M JV’s Performance Products & Solutions Specialty MixDistribution Mix Shift Highlights Specialty Transformation Distribution and Contract Manufacturing Businesses 7POLYONE CORPORATION Consistently Deliver Double Digit Annual EPS Growth *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period Proof of Performance 2020 Platinum Vision 20%+ 20%+ 12 - 14% 6.5 – 7.5% 15% 2006 2017 2020 “Where we were” “Where we are” Platinum Vision ROIC* 5.0% 14.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% Specialty Engineered Materials 1.1% 12.5% Performance Products & Solutions 5.5% 10.7% Distribution 2.6% 6.3% 8POLYONE CORPORATION $50 $116 $0 $40 $80 $120 $160 $200 2012 2014 2016 2018 10.8% 11.3% 10.0% 11.0% 12.0% 13.0% 14.0% 15.0% 2012 2014 2016 2017 2020 Platinum Vision *ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period Free Cash Flow and Improving Returns Free Cash Flow (in millions) ROIC* $200 - $220 14.0% $143 12.9% 15.0% 9POLYONE CORPORATION $767M Returning Cash to Shareholders $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 2016 2017  Since 2011, we have returned over $950 million to shareholders $767M Cumulative Share Repurchases (in millions) $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.58 $0.70 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 3-Year Dividend Plan Increasing Annual Dividend 10POLYONE CORPORATION  Expanding our sales, marketing, and technical capabilities  Investing in operational and LSS initiatives  ~60 - 70% of capital expenditures fund growth initiatives Organic Growth Acquisitions Share Repurchases Dividends  Targets that expand our: • Specialty offerings • End market presence • Geographic breadth  Growth synergies  Adjacent material solutions  Repurchased 2.0 million shares in 2017  Repurchased 20.8 million shares since early 2013  6.5 million shares are available for repurchase under the current authorization  Increased annual dividend by 30% to $0.70 per share, representing the eighth consecutive year of dividend growth  Expect to increase annual dividend 60% or more cumulatively over next three years Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return 11POLYONE CORPORATION *Specialty Platform revenue from products introduced in last five years Vitality Index Progression* 12% 38% 2006 2017 Target ≥ 35% Innovation Drives Earnings Growth $20 $52 2006 2017 Research & Development Spend ($ millions) Total Specialty Addressable Market of over $2.6 Billion (10 Projects) (10 Projects) ($500 million) (19 Projects) ($1.4 billion) Innovation Pipeline Potential Frame Opportunity Prototype Scale-up and Test Market Commercial Launch $500 Million $1.4 Billion $700 Million Phase 5Phase 4Phase 3Phase 2Phase 1 Build Business Case 12POLYONE CORPORATION 2017 2021 Key Innovation Growth Platforms Composites Barrier Additive Technology Fiber Colorants Flame Retardant Polymers  Increasing regulatory drive for halogen replacements  $400m addressable market  Drive to prevent oxygen, light and UV rays from affecting contents in PET packaging, extending shelf life  $200m addressable market  60% of world fiber consumption is synthetic, need to simplify manufacturing and eliminate waste  $300m addressable market  Polymer formulation and process engineering create a pipeline for next generation materials  Drive to replace aluminum and steel with plastics without compromising on strength Total Sales ($millions) 2017 2021 2017 2021 2017 2021 13POLYONE CORPORATION  Providing LSS services to small/medium sized customers – have trained over 30 customers in LSS methodology  Providing Industrial design and color services to small/medium sized customers  On time delivery above 95% Strengthening Relationships: Customer First Through World-Class Service 14POLYONE CORPORATION  Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strategic reinvestment for growth while returning cash to shareholders  Strong and proven management team driving growth and performance Why Invest In PolyOne?

 Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strategic balance between reinvestment for growth and returning cash to shareholders  Strong and proven management team driving growth and performance 18 POLYONE CORPORATION Segment Highlights POLYONE CORPORATION 19 2016 Revenue: $0.8 Billion At a Glance: Color, Additives & Inks Key Applications 2016 Revenue by Industry Expanding Profits 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 14.7% 16.7% 16.0% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision United States 45% Europe 33% Asia 15% Latin America 5% Canada 2% Packaging 30% Industrial 15% W & C 10% B & C 10% Textiles 9% Transportation 9% Consumer 7% Healthcare 6% Appliance 2% E & E 2% POLYONE CORPORATION 20 2016 Revenue: $0.6 Billion At a Glance: Specialty Engineered Materials 2016 Revenue by Industry Expanding Profits 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12.1% 14.7% 14.3% 20%+ 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision Consumer 19% Transportation 19% E & E 15% W & C 15% Healthcare 11% Industrial 8% Packaging 7% Appliance 3% B & C 3% United States 51% Europe 27% Asia 20% Canada 2% Key Applications POLYONE CORPORATION 21 2016 Revenue: $0.4 Billion At a Glance: Designed Structures & Solutions 2016 Revenue by Industry Expanding Profits 1.4% 5.6% 7.3% 3.0% 8-10% -0.9% 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision Transportation 27% Industrial 21% Packaging 21% B & C 11% Healthcare 8% Consumer 8% Appliance 3% E & E 1% Key Applications United States 95% Canada 5% http://www.google.com/url?

 Addressable market exceeds $40 billion  Strong performance demonstrates that our strategy and execution are working  Megatrends and emerging opportunities align with strengths  Innovation and services provide differentiation, incremental pricing power and competitive advantage  Strategic balance between reinvestment for growth and returning cash to shareholders  Strong and proven management team driving growth and performance 14 POLYONE CORPORATION Segment Highlights POLYONE CORPORATION 15 2016 Revenue: $0.8 Billion At a Glance: Color, Additives & Inks Key Applications 2016 Revenue by Industry Expanding Profits 1.7% 4.6% 5.1% 5.5% 7.2% 8.1% 9.7% 12.2% 14.7% 16.7% 16.0% 20%+ 16.6% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 1Q 2017 2020 Operating Income % of Sales United States 45% Europe 33% Asia 15% Latin America 5% Canada 2% Packaging 30% Industrial 15% W & C 10% B & C 10% Textiles 9% Transportation 9% Consumer 7% Healthcare 6% Appliance 2% E & E 2% Platinum Vision POLYONE CORPORATION 16 2016 Revenue: $0.6 Billion At a Glance: Specialty Engineered Materials 2016 Revenue by Industry Expanding Profits 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 8.6% 9.3% 12.1% 14.7% 14.3% 20%+ 14.8% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 1Q 2017 2020 Operating Income % of Sales Consumer 19% Transportation 19% E & E 15% W & C 15% Healthcare 11% Industrial 8% Packaging 7% Appliance 3% B & C 3% United States 51% Europe 27% Asia 20% Canada 2% Key Applications Platinum Vision POLYONE CORPORATION 17 2016 Revenue: $0.4 Billion At a Glance: Designed Structures & Solutions 2016 Revenue by Industry 2020 Platinum Vision Transportation 27% Industrial 21% Packaging 21% B & C 11% Healthcare 8% Consumer 8% Appliance 3% E & E 1% Key Applications United States 95% Canada 5%  Drive operational efficiency with LSS projects and customer first mentality  Recapture customers by leveraging PolyOne’s commercial excellence and service offerings 2020 Operating Margin: 8 – 10% http://www.google.com/url?

Through this powerful, configurable and global software for the management of regulatory and voluntary standard compliance, we will have full data transparency throughout the life cycle of Avient products. In 2023, we met this goal reaching 62% electricity being from renewable sources by leveraging virtual power purchase agreements among other sourcing initiatives. Does not include renewable energy credits from Virtual Power Purchase Agreements (3) Increase due to capture of all relevant Scope 3 data from APM acquisition (4) Certificates can be found at https://www.avient.com/company/policies-and-governance/global-iso-certificate-library HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 78 https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/policies-and-governance/global-iso-certificate-library INDEX HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 79 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Us—Who We Are 102–2 Activities, brands, products, and services Avient Technologies—Products Avient products are not banned in any market 102–3 Location of headquarters Avient 2023 Annual Report—Form 10-K Cover Page 102–4 Location of operations Where We Are: Global Locations Page 14 Avient 2023 Annual Report—Form 10-K Page 13 102–5 Ownership and legal form Avient 2023 Annual Report—Form 10-K Cover Page 102–6 Markets served About Us—Avient’s Support for Communities and Customers Page 15 Avient 2023 Annual Report—Form 10-K Page 13 102–7 Scale of the organization Avient 2023 Annual Report—Form 10-K Pages 2–7, 38–39 102–8 Information on employees and other workers Avient 2023 Annual Report—Form 10-K Page 5 People—Workforce Demographics Page 28 Currently we report on the number of associates.

Through this powerful, configurable and global software for the management of regulatory and voluntary standard compliance, we will have full data transparency throughout the life cycle of Avient products. In 2023, we met this goal reaching 62% electricity being from renewable sources by leveraging virtual power purchase agreements among other sourcing initiatives. Does not include renewable energy credits from Virtual Power Purchase Agreements (3) Increase due to capture of all relevant Scope 3 data from APM acquisition (4) Certificates can be found at https://www.avient.com/company/policies-and-governance/global-iso-certificate-library HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 78 https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/policies-and-governance/global-iso-certificate-library INDEX HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 79 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Us—Who We Are 102–2 Activities, brands, products, and services Avient Technologies—Products Avient products are not banned in any market 102–3 Location of headquarters Avient 2023 Annual Report—Form 10-K Cover Page 102–4 Location of operations Where We Are: Global Locations Page 14 Avient 2023 Annual Report—Form 10-K Page 13 102–5 Ownership and legal form Avient 2023 Annual Report—Form 10-K Cover Page 102–6 Markets served About Us—Avient’s Support for Communities and Customers Page 15 Avient 2023 Annual Report—Form 10-K Page 13 102–7 Scale of the organization Avient 2023 Annual Report—Form 10-K Pages 2–7, 38–39 102–8 Information on employees and other workers Avient 2023 Annual Report—Form 10-K Page 5 People—Workforce Demographics Page 28 Currently we report on the number of associates.

Patterson 1,037,619 34,761 (3) 1,072,380 1.18% 22 Directors and executive officers as a group 1,793,615 89,628 (3) 1,883,243 2.06% * Represents less than 1% of our outstanding common shares. (1) Except as otherwise stated in the following notes, beneficial ownership of the shares held by each individual consists of sole voting power and sole investment power, or of voting power and investment power that is shared with the spouse or other immediate family member of the individual or with certain trusts. As of December 31, 2023, BlackRock, Inc. had sole voting power with respect to 10,982,952 of these shares, sole dispositive power with respect to all of these shares, and shared voting and dispositive power with respect to none of these shares. (2) Based on information contained in a Schedule 13G/A filed by The Vanguard Group with the SEC on February 13, 2024. As of December 31, 2023, The Vanguard Group had sole voting power with respect to none of these shares, sole dispositive power with respect to 10,210,283 of these shares, shared voting power with respect to 60,468 of these shares and shared dispositive power with respect to 158,617 of these shares. (3) Based on 91,253,130 common shares outstanding as of February 28, 2024.

Through this powerful, configurable and global software for the management of regulatory and voluntary standard compliance, we will have full data transparency throughout the life cycle of Avient products. In 2023, we met this goal reaching 62% electricity being from renewable sources by leveraging virtual power purchase agreements among other sourcing initiatives. Does not include renewable energy credits from Virtual Power Purchase Agreements (3) Increase due to capture of all relevant Scope 3 data from APM acquisition (4) Certificates can be found at https://www.avient.com/company/policies-and-governance/global-iso-certificate-library HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 78 https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/policies-and-governance/global-iso-certificate-library INDEX HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 79 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Us—Who We Are 102–2 Activities, brands, products, and services Avient Technologies—Products Avient products are not banned in any market 102–3 Location of headquarters Avient 2023 Annual Report—Form 10-K Cover Page 102–4 Location of operations Where We Are: Global Locations Page 14 Avient 2023 Annual Report—Form 10-K Page 13 102–5 Ownership and legal form Avient 2023 Annual Report—Form 10-K Cover Page 102–6 Markets served About Us—Avient’s Support for Communities and Customers Page 15 Avient 2023 Annual Report—Form 10-K Page 13 102–7 Scale of the organization Avient 2023 Annual Report—Form 10-K Pages 2–7, 38–39 102–8 Information on employees and other workers Avient 2023 Annual Report—Form 10-K Page 5 People—Workforce Demographics Page 28 Currently we report on the number of associates.