Investor Relations Contact: Joe Di Salvo, Vice President, Treasurer and Investor Relations, PolyOne Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com or Media Contact: Kyle G.

The virtual Annual Meeting platform is fully supported across browsers and devices running the most updated version of applicable software and plugins. Our Board maintains Audit ("AC"), Compensation ("CC"), Governance and Corporate Responsibility ("G&CRC"), and Environmental, Health and Safety ("EH&SC") committees. Estimated Future Payouts Under Equity Incentive Plan Awards (columns (f) and (g)) (3) Stock Appreciation Rights.

In connection with that review, the Board determined that it would be responsible for understanding and overseeing sustainability trends (including climate change related issues) and their impacts on the business and strategy, with input from, and upon recommendations of, the Governance and Corporate Responsibility Committee (the G&CR Committee). Other responsibilities of the full Board include: • Reviewing reports and disclosures on corporate responsibility and/or sustainability published by the Company (following G&CR Committee review). • Conducting an annual Enterprise Risk Management review. • Reviewing the Company’s Great Places To Work (GPTW) employee engagement survey results / action items. Other, please specify Governance and Corporate Responsibility Committee (Chair of the Committee) The Company’s G&CR Committee is also tasked with providing oversight and guidance with regard to how the Board and management evaluate and integrate corporate responsibility and sustainability (including climate change related issues) into the Company’s business strategy and decision-making.

Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com, Media: Kyle G.

Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G.

Media Contact: Kyle G.

Use of Non GAAP Measures Page 3 -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 Strategy and Execution Drive Results Page 4 All time closing high of $29.48 August 1, 2013 • 15 consecutive quarters of double digit EPS growth • 42% CAGR adjusted EPS expansion 2006-2012 • YTD stock price has increased 42% versus 20% growth in the S&P • 275% increase in market cap: $0.7b $2.6b since 2006 The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Four Pillar Strategy Page 5 PP&S 15% Specialty 60% Distribution 25% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010* 2011* 2012* 2015 Target Ad ju st ed E ar ni ng s P er S ha re Appliance 6% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 4% Consumer 9% Packaging 18% Industrial 10% Misc. 5% HealthCare 9% Transportation 16% Textiles 1% United States 70% Europe 14% Canada 8% Asia 5% Latin America 3% 2012 Revenues: $4.0 Billion* End Markets* 2012 Revenues: $4.0 Billion* EPS Page 6 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms & excludes discontinued operations PolyOne At A Glance * Restated to exclude discontinued operations Old PolyOne Transformation *Operating Income excludes corporate charges and special items **Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and excludes discontinued operations 2% 34% 43% 45% 60% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2012 2012 PF** 2015 % o f O pe ra tin g In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $114M $150M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 7 2006 H1 2013 2015 Where we were Where we are Organic Consolidated Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.7% 12.6% 12 – 16% Global Specialty Engineered Materials 1.1% 10.9% 9.2% 12 – 16% Designed Structures & Solutions — — 4.4% 8 – 10% Performance Products & Solutions 5.4% 8.1% 8.2% 9 – 12% Distribution 2.6% 6.1% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 62% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 26% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 8 *Percentage of Specialty Platform revenue from products introduced in last five years 19.5% 46.5% 2006 Q2 2013 $20.3 $44.7 2006 TTM Q2'13 14.3% 31.1% 2006 Q2 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ millions) Specialty Platform Gross Margin % Page 9 We are Experts in Polymer Science and Formulation  Polymer Science  Formulation  Chemistry  Processing Inputs  Base Resins  Additives  Modifiers  Colorants Specialized Polymer Materials, Services, and Solutions Expertise Satisfied Consumers PolyOne Customer Innovative Products & Services  Marketplace Demands  Performance Requirements  Value Drivers Page 10 Positioned for Strong Growth 2015 Target Rev: $5B Adj.

# # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

MARINE PLYWOOD Hammerhead™ panels are three times lighter than marine plywood MOISTURE ABSORPTION % weight change due to water absorption for selected composites and marine plywood 10000 60000 110000 160000 210000 260000 310000 360000 0.5 0.75 1 1.25 1.5 F le x u ra l R ig id it y - lb / in 2 Panel Thickness - in Hammerhead™ 5.3lb/in^3 Core Density Hammerhead™ 8.4lb/in^3 Core Density Plywood — Hammerhead™ 5.3 lb/ft3 Core Density — Hammerhead™ 8.4 lb/ft3 Core Density — Marine Plywood 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 10 20 30 40 50 60 70 80 90 100 % W e ig h t C h a n g e Immersion Time - Days .50" Hammerhead™ .75" Hammerhead™ 1" Hammerhead™ 1.50" Hammerhead™ .50" marine plywood .75" marine plywood 1" marine plywood Fl ex ur al R ig id ity - lb -in 2 INSTALLATION INSTRUCTIONS CUTTING & DRILLING Recommended blade: Industrial fine cut-off saw blade, 10" x 80 teeth 38° ATB grind with 5/8" bore, PTFE coating Recommended router bits: 3/8" diameter, 4 flute TiAlN (titanium aluminum nitride) coated carbide bit FORMING Apply localized 400˚F heat at a length proportional to the panel thickness (see equation below) and bend to shape.

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?