RISK PERCEPTION RISK TOLERANCE DECISION OR ACTION .56 Injury Rate 65% of sites worked injury-free 110% increase in consecutive days injury free in the last two years SAFETY FIRST 50% 0 70%20 43% Average number of risk assessments completed every day Reduction in lacerations since 2017 Reduction in ergonomic related injuries Automobile related injuries Reduction in acquisition injury rate 74424.indd main_3 3/16/20 12:25 PM Annual Report | 2019 4 With our focus on People, it has led to the creation and expansion of Employee Resource Groups (ERGs) at PolyOne to advance diversity and inclusion.

PROXY STATEMENT 2024 | Annual Meeting of Shareholders 49 The 2023 Corporate and Business Segment Annual Plan weightings reflect adjustments from 2022 as follows: Corporate Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 60% 70% Working Capital as a % of Sales 20% 20% Sustainability Objectives 20% 10% Business Segment Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 20% 10.5% Adjusted Operating Income (Business Segment results) 40% 59.5% Working Capital as a % of Sales (Business Segment results) 20% 20% Sustainability Objectives 20% 10% We set appropriate performance goals in 2023 under the 2023 Annual Incentive Program that focused our efforts on those factors that we believed were critical to our ongoing success, including earnings improvement, cash generation from working capital, efficiencies in our operations, and the advancement of sustainability initiatives. Total attainment for these participants under the 2023 Annual Incentive Program was 52.5%, with the components consisting of (dollars in millions): 50 PROXY STATEMENT 2024 | Annual Meeting of Shareholders 2023 Corporate Plan Annual Incentive Program* (Patterson, Beggs, Kunkle, Rathbun) Adjusted Operating Income (consolidated) 70% $314.5 $338.6 $399.6 $312.8 0.0% Working Capital as a % of Sales 20% 12.4% 11.7% 10.7% 10.3% 200.0% Sustainability Objectives 10% See above disclosure for more information about  goals and achievements 125.0% *Adjusted operating income (performance measures and results) reported in the table above was calculated with adjustments for special items (as noted on Appendix A) pursuant to the terms of the awards and as approved by the Compensation Committee. Although SARs granted in 2023, 2022 and 2021 would also be 70 PROXY STATEMENT 2024 | Annual Meeting of Shareholders subject to prorata vesting in cases of retirement, disability or death, and full vesting in the case of an involuntary termination following a change in control, the table reflects a value of $0 for the SAR awards, as the grant price in each of these years exceeds the December 29, 2023 closing stock price

2022 Proxy Statement TABLE OF CONTENTS Message from our CEO i Notice of 2022 Annual Meeting of Shareholders ii Record Date ii Voting Matters and Vote Recommendations ii Proxy Statement 1 Proxy Summary 1 Voting and Meeting Information 1 Attendance and Participation 1 Who is Eligible to Vote 1 Advance Voting Methods 2 Voting During the Annual Meeting 2 Questions 3 Company Operating Performance 3 Our Company Culture 4 The 4Ps of Sustainability at Avient 4 Impact of our Performance on Named Executive Officer 2021 Compensation 9 Our Director Nominees and Committee Membership 11 Summary of Director Nominee Skills, Experience and Background 12 Governance Highlights 13 Proposal 1 - Election of Twelve Director Nominees to Our Board of Directors 16 Proposal 2 - Advisory Vote to Approve Named Executive Officer Compensation 23 Proposal 3 - Ratification of the Appointment of Ernst & Young LLP as Our Independent Registered Public Accounting Firm for the Fiscal Year Ending December 31, 2022 25 Independent Registered Public Accountant Services and Related Fee Arrangements 25 Report of the Audit Committee 26 Corporate Governance 28 Director Independence 28 Lead Director 29 Board Leadership Structure 29 Majority Voting for Directors 29 Board Oversight of Risk 29 Board Oversight of ESG and Sustainability Matters 30 Code of Ethics, Code of Conduct and Corporate Governance Guidelines 31 Related Person Transactions 31 Communication with Board 32 Board and Committees 32 Board Refreshment and Diversity 36 2021 Non-Employee Director Compensation 38 Non-Employee Director Compensation Highlights 38 Non-Employee Director Retainer and Meeting Fees 38 2021 Non-Employee Director Compensation Table 39 Option Awards Outstanding and Fully Vested Deferred Shares 40 Ownership of Avient Shares 41 Beneficial Ownership of Our Common Shares 41 Stock Ownership Guidelines for Non-Employee Directors 42 Compensation Discussion and Analysis 43 Executive Summary 43 Executive Compensation Philosophy and Objectives 46 What We Pay and Why: Elements of Compensation 49 Other Aspects of our Compensation Programs 55 Executive Compensation 59 2021 Summary Compensation Table 59 2021 Grants of Plan-Based Awards 61 Outstanding Equity Awards at 2021 Fiscal Year-End 63 2021 Option Exercises and Stock Vested 64 2021 Non Qualified Deferred Compensation 64 Potential Payments Upon Termination or Change of Control 65 CEO Pay Ratio Disclosure 70 Compensation Committee Interlock and Insider Participation 70 Risk Assessment of the Compensation Programs 71 Compensation Committee Report 71 Miscellaneous Provisions 72 Voting at the Meeting 72 Revoking a Proxy 72 Shareholder Proposals 73 Proxy Solicitation 73 Appendix A A-1 i MESSAGE FROM OUR CEO Dear Fellow Shareholder: We have decided to hold the Annual Meeting virtually because doing so enables greater shareholder attendance and participation from any location around the world, and reduces the cost and environmental impact of the Annual Meeting. Beggs – 70%; and Messrs. EXECUTIVE COMPENSATION 70 PROXY STATEMENT 2022 | Annual Meeting of Shareholders (6) Continuation of health and welfare benefits, or comparable benefits, are provided under the Executive Severance Plan in the event of an involuntary termination without cause or the Continuity Agreement in the event of an involuntary termination following a change of control

Abernathy 70 2018 Yes M M Richard H. Director since: 2018 Age: 70 Current Public Company • Haemonetics Corporation Former Directorships: • Halyard Health, Inc With respect to SARs granted in 2022, the table reflects a value of $0 for the SAR PROXY STATEMENT 2025 | Annual Meeting of Shareholders 70 awards, as the 2022 SAR grants have not met any of the applicable stock price hurdles and the grant price in 2022 exceeds the December 31, 2024 closing stock price

Typical Sprue Designs for Various Hardness Values Typical TPE Hardness Range Most Common Sprue Puller Types Figure >50 Shore A Tapered, Pin, Z-Type 3, 4 and 6 40-70 Shore A Undercut 5 5-40 Shore A Pine Tree 7 Hot sprue bushings and extended nozzles may also be used with GLS TPEs.

PROXY STATEMENT 2024 | Annual Meeting of Shareholders 49 The 2023 Corporate and Business Segment Annual Plan weightings reflect adjustments from 2022 as follows: Corporate Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 60% 70% Working Capital as a % of Sales 20% 20% Sustainability Objectives 20% 10% Business Segment Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 20% 10.5% Adjusted Operating Income (Business Segment results) 40% 59.5% Working Capital as a % of Sales (Business Segment results) 20% 20% Sustainability Objectives 20% 10% We set appropriate performance goals in 2023 under the 2023 Annual Incentive Program that focused our efforts on those factors that we believed were critical to our ongoing success, including earnings improvement, cash generation from working capital, efficiencies in our operations, and the advancement of sustainability initiatives. Total attainment for these participants under the 2023 Annual Incentive Program was 52.5%, with the components consisting of (dollars in millions): 50 PROXY STATEMENT 2024 | Annual Meeting of Shareholders 2023 Corporate Plan Annual Incentive Program* (Patterson, Beggs, Kunkle, Rathbun) Adjusted Operating Income (consolidated) 70% $314.5 $338.6 $399.6 $312.8 0.0% Working Capital as a % of Sales 20% 12.4% 11.7% 10.7% 10.3% 200.0% Sustainability Objectives 10% See above disclosure for more information about  goals and achievements 125.0% *Adjusted operating income (performance measures and results) reported in the table above was calculated with adjustments for special items (as noted on Appendix A) pursuant to the terms of the awards and as approved by the Compensation Committee. Although SARs granted in 2023, 2022 and 2021 would also be 70 PROXY STATEMENT 2024 | Annual Meeting of Shareholders subject to prorata vesting in cases of retirement, disability or death, and full vesting in the case of an involuntary termination following a change in control, the table reflects a value of $0 for the SAR awards, as the grant price in each of these years exceeds the December 29, 2023 closing stock price

Patterson Chairman, President and CEO INTRODUCTION B O B P A T T E R S O N PolyOne Corporation 7 PolyOne Corporation 8 H I S T O R I C P A S T S U S T A I N A B I L I T Y A T P O L Y O N E PolyOne Corporation 9 P E O P L E P R O D U C T S P L A N E T S A F E T Y F I R S T PolyOne Corporation 10 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Injuries per 100 Workers Spartech Acquisition T H E P O L Y O N E A C A D E M Y PolyOne Corporation 11 Leadership Program Participants 2012 2013 2015 86 2016 125 169 216 Campus Hires 2008 2011 25 S U S T A I N A B L Y I M P A C T I N G D I V E R S E E N D M A R K E T S PolyOne Corporation 12 With emphasis on: • Light-weighting • Reducing packaging materials • Improving recyclability • Reducing spread of infection • Facilitating alternative energy solutions Building & 9% Electrical & P R O D U C T S A N D P O R T F O L I O O P T I M I Z A T I O N PolyOne Corporation 13 R E I N V E S T G R O WD I V E S T ( D S S ) OUR PLANET PolyOne Corporation 14 Energy Saving Projects 26 REDUCTION REDUCTION Waste Reduction Projects 2,557 LSS Projects Executed 202 PolyOne LSS Blackbelts 2011 2017 202 2008 147 67 2,557 2008 2017 S U S T A I N A B I L I T Y A T P O L Y O N E PolyOne Corporation 15 2009 2010 2011 2012 2013 2014 2015 2016* 2017* A D J U S T E D E P S E X P A N S I O N C O N S E C U T I V E Y E A R S PolyOne Corporation 16 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 *Pro Forma for sale of DSS E A R L Y Y E A R S D E F I N E D B Y S P E C I A L T Y M I X I M P R O V E M E N T PolyOne Corporation 17 65% 2005 2014 $5M $242M + 25% + 33% Specialty OI % of Operating Income C O M M O D I T Y P R U N I N G H E L D O R G A N I C S A L E S F L A T PolyOne Corporation 18 2010 2011 2012 2013 2014 Acquisitions Organic Revenue I N V E S T M E N T I N COMMERCIAL RESOURCES D R I V I N G R E S U L T S PolyOne Corporation 19 Largest organic revenue growth since recession $2.9 $2.9 $3.2 2015 2016 2017 Revenue in billions of $ Total + 10% Organic + 7% S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 20 Double digit annual EPS growth Expand specialty portfolio with strategic acquisitions Innovate and develop new technologies and services Repurchase 600K-1M shares annually Increase commercial resources 6-8% annually Double acquired company margins Enhance efficiencies through Lean Six Sigma and commercial excellence 5.0% 2006 2017 Platinum Vision Updated Expectations R A I S I N G T H E B A R R O I C D R I V E S S H A R E H O L D E R R E T U R N PolyOne Corporation 21 COMMERCIAL EXCELLENCE PolyOne Corporation 22 M I C H A E L G A R R A T T PolyOne Corporation 23 PolyOne Corporation 24 35% more sales calls 25% more marketing campaigns 1,000 new customers, expanding customer base by 5% $1.0B increase in new opportunities 8% reduction of average territory size, enabling greater customer focus 20% more prospecting calls PolyOne Corporation 25 P O L Y O N E +34% $3.0 billion $4.0 billion A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R PolyOne Corporation 26 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection PolyOne Corporation 27 Customization 55% M&A Innovation Pipeline Adjacent Opportunity for Growth Through New Innovation comes from PolyOne Corporation 28 Adjacent Opportunity for Growth Through New New development adjacent to our existing New development beyond our current Development within our current markets and Create new markets, target new customer Service existing markets and Adjacent Opportunity for Growth Through New PolyOne Corporation 29 markets and Create new markets, target new customer Service existing markets and Gordon/Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives New development adjacent to our existing New development beyond our current Development within our current Adjacent Opportunity for Growth Through New PolyOne Corporation 30 markets and Create new markets, target new customer Service existing markets and Non-Halogen Flame Retardant Polymers Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers New development adjacent to our existing New development beyond our current Development within our current I N N O V A T I O N P I P E L I N E PolyOne Corporation 31 PrototypeFrame Opportunity Scale-up & Test Build Business Case Commercial Launch Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 6 2 1 15 4 10 11 4 7 Breakthrough Platform Derivative Number of Projects 26 16 20 15 2 79 Color Technologies – – $335 $670 $410 19 $1,415 Barrier Additives – – $160 $255 – 8 $415 Flame Retardant Polymers – – $200 $50 – 14 $250 Thermoplastic Elastomers – – $410 $80 $30 17 $520 Advanced Composites – – $100 $40 – 8 $140 Specialty Vinyl Formulations – – $25 $75 – 13 $100 Total Addressable Market ($ millions) – – $1,230 $1,170 $440 $2,840 38% $20 $52 Research & Development Spend ($ millions) Vitality Index % of sales from products launched last 5 years I N N O V A T I O N D R I V E S E A R N I N G S G R O W T H PolyOne Corporation 32 A U N I Q U E C U S T O M E R E X P E R I E N C E Industrial Design IQ DESIGN LABS PolyOne Corporation 33 Material & Color Expertise Manufacturing Expertise 3 14 Industrial designers $0 $7M $4M $40M Opportunity funnel New business revenue 3 D P R I N T I N G B R I N G I N G N E W I D E A S T O L I F E PolyOne Corporation 34 Enables validation of fit and function Shortens design cycle and time to market Avoids tooling rework Drives innovation Delivers substantial customer value LSS CUSTOMER FIRST PolyOne Corporation 35 Customer Projects Enables sales growth by building more intimate customer relationships, giving us insight to customers’ needs, with a service that is not easily replicated 2 85 Lead Specialists T H E E V O L V I N G C U S T O M E R R E L A T I O N S H I P PolyOne Corporation 36 Expanded Path Traditional Path Strategic Accounts/ Field Sales Business Development Customer Service Web and Social Media Inside Sales PolyOne Corporation 37 Investments in digital and dedicated inside sales to improve customer experience 80% increase in leads (from 6,000 to 11,000) driven by website, phone, and online chat EXPANDED PATH A D D I N G C U S T O M E R T O U C H P O I N T S 4 21 Inside sellers $11M $88M Inside sales/digital revenue 4 focused end-markets aligned with global megatrends 5 strategic innovation platforms 30% increase in IQ Design projects 35% increase in revenue from inside sales/digital ≥35% vitality index PolyOne Corporation 38 I N N O V A T I N G W I T H P O L Y O N E PolyOne Corporation 39 SEGMENT REVIEWS POLYONE DISTRIBUTION PolyOne Corporation 40 S C O T T H O R N D I S T R I B U T I O N E N D M A R K E T S & S U P P L I E R S PolyOne Corporation 41 23% 22% Electrical & Building & $20 $63 $73 2.9% 5.9% 1.0% 3.0% 5.0% 7.0% 15 25 35 45 55 65 75 Operating Income & Margin2017 Revenue | $1.2 Billion http://www.avient.com/Pages/VariationRoot.aspx http://www.avient.com/Pages/VariationRoot.aspx S E R V I C E I S O U R B U S I N E S S PolyOne Corporation 42 Uniquely positioned to help our customers grow their brand and value-added solutions 1.2B $ Annual Sales 250 Global Employees 24 Strategic Presence 132 Sales Reps Warehouse Locations 6 Service Centers Dedicated Commercial Team S E R V I C E I S O U R B U S I N E S S S A F E L Y A N D R E S P O N S I B L Y PolyOne Corporation 43 95% on-time delivery Customer/Product Combinations 14,000 Transactions/Month In-Person Customer Visits 6,500 27,000 $ PolyOne Corporation 44 37% more sales calls $65M in new revenue from inside sales $400M increase in new opportunities 24% increase in close rate 51% increase in prospecting calls 119 13211 1315 23 Sales R&D / Technical Marketing + 53% + 11% PolyOne Corporation 45 Providing differentiated services that meet the needs of the changing customer landscape G R O W T H T H R O U G H I N S I D E S A L E S $65 PolyOne Distribution Inside Sales $ in millions PolyOne Corporation 46 G R O W T H T H R O U G H M U L T I P L E S A L E S C H A N N E L S Technical Field Sales Key Accounts / Industry Sales Inside Sales Serving a broad spectrum of customers Leveraging digital systems to drive awareness and enhance the customer experience PolyOne Corporation 47 P O D S A L E S +27% $1.2 billion $1.6 billion >10% annual increase in revenue from inside sales and digital with expanded customer touch points 8% annual expansion of sales funnel with best-in-class service and technical expertise 6-8% compound annual operating income growth 6-7% operating margins PolyOne Corporation 48 SPECIALTY ENGINEERED MATERIALS PolyOne Corporation 49 M I C H A E L G A R R A T T S P E C I A L T Y E N G I N E E R E D M A T E R I A L S PolyOne Corporation 50 Engineered Formulations Advanced Thermoplastic Elastomers 19% Electrical & 13% 8% Building & S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Revenue by Region Operating Income & Margin 2 0 1 7 R E V E N U E | $ 6 2 4 M I L L I O N PolyOne Corporation 51 $21 $57 $76 0.1% 5.1% 9.3% 12.1% Europe 28% 48% 22% C A P I T A L I Z I N G O N T H E G L O B A L M A R K E T PolyOne Corporation 52 Demand for engineered materials is accelerating Expanding thermoplastic elastomer portfolio to meet the demands of local consumption Grow and develop low smoke, non-halogen technologies to meet increasing European standards Adding capacity in strategic markets India Germany China North America Establishing a commercial hub in Southeast Asia PolyOne Corporation 53 PolyOne Corporation 54 13% more sales calls 36% increase in customization projects $270M increase in new opportunities 12% reduction in average territory size, enabling greater customer focus 50% improvement in speed of formulation turnaround Increased commercial headcount 133 17335 39 120 147 + 30% + 11% PolyOne Corporation 55 S E M S A L E S +43% $610 million $880 million PolyOne Corporation 56 Leading Sporting Goods Manufacturer Provided Lean Six Sigma training and led an onsite Black Belt project to improve product development cycle times Reduced innovation project cycle times by over 10% and prototyping by 40% 80% increased resulting in $500k savings I N N O V A T I O N S P O T L I G H T : C O M P O S I T E S PolyOne Corporation 57 C O M P O S I T E S R E F R E S H E R PolyOne Corporation 58 Polymer Composite Strength Design Flexibility Continuous Fiber Thermoset Short Glass Fiber Thermoplastics Continuous Fiber Long Glass Fiber Thermoplastics S T R A T E G I C I N V E S T M E N T H I S T O R Y PolyOne Corporation 59 Acquired Polystrand Installed LFT production Avon Lake Long Fiber Thermoplastic (LFT) Technology Installed LFT Barbastro, Spain Acquired Glasforms Acquired Gordon Thermoplastic Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets 2010 2012 2015 2016 20162009 20122011 2014 C O M P O S I T E S I N T R A N S P O R T A T I O N PolyOne Corporation 60 W A T E R C R A F TR A I L H E A V Y T R U C K Bulkheads and Transoms Ceilings and Hatches Doors and Cabinetry Flooring Door Panels Side Walls Flooring & Side Panels Aerodynamic Fairings Seat and Bunk Reinforcements 44 At Acquisition Now Commercial Resources 0% At Acquisition Goal Operating Margins Test Market Innovation Projects PolyOne Corporation 61 A D V A N C E D C O M P O S I T E S Long-term investments align with key global megatrends Light-Weighting Design Flexibility Sustainability >10% annual increase in customization projects 10% annual expansion of sales funnel, enhancing portfolio in 4 focus end markets 20% increase in global capacity 12-15% compound annual operating income growth 14-16% operating margins PolyOne Corporation 62 PERFORMANCE PRODUCTS & SOLUTIONS PolyOne Corporation 63 D O N W I S E M A N P E R F O R M A N C E P R O D U C T S & S O L U T I O N S PolyOne Corporation 64 Specialty Vinyl Solutions Healthcare Formulations Smart Device Materials Flame Retardant Polymers Building & Electrical & 1% Asia 77% Mexico P E R F O R M A N C E P R O D U C T S & S O L U T I O N S Operating Income & MarginRevenue by Region 2 0 1 7 R E V E N U E | $ 7 2 1 M I L L I O N $40 $33 $56 $77 4.6% 3.6% 7.2% 10.7% 16.0% 10 PolyOne Corporation 65 $886 $668 $773 $721Sales PolyOne Corporation 66 PolyOne Corporation 67 25% more sales calls 113% increase in innovation pipeline $240M increase in new opportunities 36% increase in prospecting calls 300 basis point improvement in operating margin 57 66 18 37 53 + 16% + 43% + 6% PolyOne Corporation 68 P P & S S A L E S +40% $610 million $850 million PolyOne Corporation 69 Leading Wire & Cable Manufacturer Provided Lean Six Sigma training and led on-site Kaizen process improvements Reduced over 400 labor hours through reorganized work area and floor space Increased manufacturing throughput value $1.4M PolyOne Corporation 70 IQ Design is collaborating with a leading medical device manufacturer to replace metal and provide chemical resistance to solve cracking issues related to intense cleaning requirements H E A L T H C A R E I N N O V A T I O N S I N N O V A T I O N S P O T L I G H T : F L A M E R E T A R D A N T P O L Y M E R S PolyOne Corporation 71 F L A M E R E T A R D A N T D R I V E R S PolyOne Corporation 72 Shift toward less toxic solutions Increased consumer awareness Focus on environmentally friendly solutions New regulatory standards F L A M E R E T A R D A N T P E R F O R M A N C E S P E C T R U M PolyOne Corporation 73 Flame Retardant Flame Retardant Flame Retardant Non-Halogen No Dripping Low Smoke Low Toxicity & Corrosiveness H A L O G E N N O N - H A L O G E N L S F O H ( L o w S m o k e a n d F u m e , N o n - H a l o g e n ) Non-Halogen R E G U L A T O R Y C H A N G E S P R O V I D E O P P O R T U N I T Y L E D S O L U T I O N S PolyOne Corporation 74 Solutions for rigid molded & extruded applications Superior outdoor weather performance Excellent light dispersion qualities Formulated to meet stringent flame-rating regulations Custom design support to meet demand 8% more sales calls annually 10% annual expansion of sales funnel, including breakthroughs in healthcare technologies 8-10% compound annual operating income growth 12-14% operating margins PolyOne Corporation 75 COLOR ADDITIVES & INKS PolyOne Corporation 76 M A R K C R I S T C O L O R , A D D I T I V E S & I N K S PolyOne Corporation 77 Solid Colorants Performance Additives Screen Printing Inks Liquid Colorants 27% 14% Textiles Building & 8% Electrical & Operating Income & MarginRevenue by Region C O L O R , A D D I T I V E S & I N K S 2 0 1 7 R E V E N U E | $ 8 9 3 M I L L I O N $104 $139 0.9% 5.5% 12.2% 15.5% 16.0% 18.0% 110 120 130 140 150 PolyOne Corporation 78 Europe 32% 46% 1% Mexico Brazil C A P I T A L I Z I N G O N T H E G L O B A L M A R K E T PolyOne Corporation 79 Emerging markets driving strong demand for color and additives Rapid adoption of food and beverage packaging additives Fiber colorants growth focused on expanding Asia-Pacific market Increase commercial investments focused on China, India and Mexico Expand capacity in China and leverage investments in India Recent acquisitions increasing global reach PolyOne Corporation 80 PolyOne Corporation 81 35% more sales calls 30% increase in customized color formulations 106% increase in innovation pipeline $170M increase in new opportunities 20% increase in prospecting calls 9 days or less in design turnaround time: best-in-class Increased commercial investment 301 382 38 43 209 275 + 27% + 13% + 32% PolyOne Corporation 82 C A I S A L E S +32% $540 million $710 million PolyOne Corporation 83 Developed inventory management framework to reduce working capital by Printing Equipment and Supply Manufacturer Provided Lean Six Sigma training and conducted process mapping exercises to identify key improvement opportunities Optimize manufacturing: 45% improvement in assembly process, 25% cycle time A D D I T I V E & C O L O R A N T T E C H N O L O G I E S PolyOne Corporation 84 B A R R I E R T E C H N O L O G I E S Active oxygen scavenging additive in the bottle wall Evolving technology for active oxygen scavenging additive in the bottle cap Amosorb™ HyGuard™ UV and visible light blocking additive to prevent degradation of product Lactra™ SX Market leader in oxygen, light and UV barrier solutions for the PET bottle market PolyOne Corporation 85 S T R A T E G I C A D D R E S S A B L E M A R K E T > $ 2 0 0 M F I B E R C O L O R A N T S Eliminate waste water associated with conventional dyeing Help meet sustainability targets for brand owners Enable “uncolored fiber” producers to bypass dyehouse Strategic addressable market >$300M PolyOne Corporation 86 S T R A T E G I C I N V E S T M E N T H I S T O R Y PolyOne Corporation 87 Thermoplastic 2011 2015 2018 Acquired ColorMatrix Acquired Magenta Acquired IQAP $10 $45 Revenue from Fiber Color Invested in development of liquid fiber colorant technology Expanded solid colorant offerings 38 43 At Acquisition Now Commercial Resources Innovation Projects PolyOne Corporation 88 I N V E S T I N G F O R T H E F U T U R E Nearly 900 projects identified Gaining sustainable momentum & building trust with consumers Sales Funnel $125M “We are unleashing the power of human potential, all to advance the game.

In 2023, Avient collected sustainable assessments for 70% of our total direct spend for sourcing. In 2023, Avient collected sustainable assessments for 70% of our total direct spend for sourcing. Avient successfully collected sustainable assessments for 70% of our total direct spend for sourcing.

The following table summarizes our liquidity as of December 31, 2015: Cash and cash equivalents $279.8 Revolving credit availability 341.9 Liquidity $621.7 As of December 31, 2015, 70% of the Company’s cash and cash equivalents resided outside the United States. Based on the current funded status of the plan, our pension asset investment allocation guidelines are to invest 60% to 70% in fixed income securities, 30% to 40% in equity securities and 0% to 10% in alternative investments and cash. In response, Franklin-Burlington and approximately 70 other companies (collectively, the Cooperating Parties) agreed, pursuant to an Administrative Order of Consent with the USEPA, to assume responsibility for development of a RIFS of the lower Passaic River.

March 11, 2013 25+38+38 +73+74+95 19+15+9 +56+72+85 Operating Income % Specialty PP&S Distribution   Specialty Platform Operating Income % of Total ROIC** (after-tax) 3.2% 6.1% 3.0% 20% 7% 9.1% 9.0% 6.4% 45% 11% 2015 TARGET 12%–16% 9%–12% 6%–7.5% 65%–75% 15% 0 20 40 60 80 100 120 $ millions SPECIALTY PLATFORM OPERATING INCOME 40+68+70 +86+84+902012 0 10 20 30 40 50 60 % PERCENTAGE SPECIALTY PLATFORM OPERATING INCOME % OF TOTAL* 41+33+35 +70+79+932012 0 1 2 3 4 5 6 7 8 % PERCENTAGE ADJUSTED RETURN ON SALES^ POLYONE STOCK (POL) PERFORMANCE VERSUS S&P 0 .20 .40 .60 .80 1.00 1.20 1.40 $ DOLLARS ADJUSTED EARNINGS PER SHARE† 0 .2 .4 .6 .8 1 1.2 *Operating income excludes corporate operating income SAFETY INJURY INCIDENCE RATE˚ 12.31.09 6.30.10 12.31.10 6.30.11 12.31.11 6.30.12 12.31.12 DATE 200 150 100 50 0 P R C TA G POL S&P 600 CHEMICALS S&P 500 INJURY incidence rate 91+91+71 +54+47+45 ˚Number of injuries per 100 full time associates^Operating income excludes special items and equity income from SunBelt **ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period †EPS excluding special items and equity income from SunBelt POL 173% S&P 600 Chemicals 34% S&P 500 28% 5 Proof of Performance Our values, strategy, commitment and execution are clearly evident in our recent financial and operational performance. Unrecognized compensation cost for RSUs at December 31, 2012 was $7.1 million, which is expected to be recognized over the weighted average remaining vesting period of 15 months. 70 POLYONE CORPORATION Stock Options Our incentive stock plans previously provided for the award or grant of options to purchase our common shares.