• Factors that could cause actual results to differ materially from those implied by these forward looking statements include but are not limited to:• Factors that could cause actual results to differ materially from those implied by these forward‐looking statements include, but are not limited to:  Our ability to achieve the strategic and other objectives relating to the Spartech acquisition, including any expected synergies; our ability to successfully integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive;  Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future;  The financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability;liquidity) to maintain their credit availability;  The speed and extent of an economic recovery, including the recovery of the housing market;  Our ability to achieve new business gains;  The amount and timing of repurchases, if any, of PolyOne common shares and our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets where we conduct business;g p y p g ;  Changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online;  Fluctuations in raw material prices, quality and supply and in energy prices and supply;  Production outages or material costs associated with scheduled or unscheduled maintenance programs;  Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters;  An inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions, employee productivity goals, and an inability to raise or sustain prices for products or services;, , p y p y g , y p p ;  An inability to maintain appropriate relations with unions and employees; and  Other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward‐looking statements, whether as a result of new information, future events or otherwise. EPS: $2.50 Assumptions • High single digit organic revenue CAGR • Operating margins in mid range of 2015 targets • No global recession• No global recession • No investment in incremental PP&S capacity • Completion of 2‐3 midsize accretive acquisitions • No divestitures • Housing starts at 85% of 50 year norm by 2015 R i f t bl b l 3X N t 2012 $ • Remain comfortably below 3X Net Debt / EBITDA Page 13 Rev: $3.0B Adj.

• Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to:  The final amount of charges resulting from the planned North American asset realignment and the Company’s ability to realize anticipated savings and operational benefits from the asset realignment;  Our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies;  Our ability to successfully integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive;  Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future;  The financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability;  The speed and extent of an economic recovery, including the recovery of the housing market;  Our ability to achieve new business gains;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets where we conduct business;  Changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online;  Fluctuations in raw material prices, quality and supply and in energy prices and supply;  Production outages or material costs associated with scheduled or unscheduled maintenance programs;  Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters;  An inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions, employee productivity goals, and an inability to raise or sustain prices for products or services;  An inability to raise or sustain prices for products or services;  An inability to maintain appropriate relations with unions and employees;  The inability to achieve expected results from our acquisition activities;  Our ability to continue to pay cash dividends;  The amount and timing of repurchases of our common shares, if any; and  Other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise. Use of Non-GAAP Measures Page 3 -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 All time high of $34.47 December 9th, 2013 • 16 consecutive quarters of double digit EPS growth • 42% CAGR adjusted EPS expansion 2006-2012 • YTD stock price has increased 63% versus 27% growth in the S&P • More than six fold increase in market cap: $0.5b $3.3b Strategy and Execution Drive Results Page 4 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 2% 34% 43% 63% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 YTD 2013 2015 % o f O pe ra tin g In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $153M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 7 2006 YTD 2013 2015 Where we were Where we are Organic Consolidated Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.8% 12.8% 12 – 16% Global Specialty Engineered Materials 1.1% 10.8% 8.9% 12 – 16% Designed Structures & Solutions — — 5.0% 8 – 10% Performance Products & Solutions 5.5% 8.0% 8.2% 9 – 12% Distribution 2.6% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 63% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 28% 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% 44.0% 2006 Q3 2013 $20.3 $46.6 2006 TTM Q3'13 14.3% 31.0% 2006 Q3 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ 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.

• Review and approve corporate goals and objectives relevant to the Chief Executive Officer’s compensation; in conjunction with the evaluation conducted by the Board as described in the Company’s Corporate Governance Guidelines, evaluate the Chief Executive Officer’s performance in light of these goals and objectives; and determine and approve (or determine and approve, and recommend to the independent members of the Board for their determination and approval) the Chief Executive Officer’s compensation level based on this evaluation and comparable market data provided by an independent compensation consultant. • In determining the long-term incentive component of the Chief Executive Officer’s compensation, consider the Company’s performance and relative shareholder return, the value of similar incentive awards to chief executive officers at comparable companies, and the awards given to the Chief Executive Officer in the past. • Review and approve the compensation of other executive officers of the Company, including benefits and perquisites, taking into consideration the Company’s performance, comparable market data, the performance of each executive officer, and such other factors as may, in the Committee’s discretion, be appropriate. • In evaluating and making recommendations regarding, or determining and approving, executive compensation, the Committee shall consider the results of the most recent shareholder advisory vote on executive compensation (“Say on Pay Vote”) required by Section 14A of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). • With respect to incentive compensation plans and equity-based plans: • Make recommendations to the Board with respect to the approval of incentive compensation plans for executive officers and all equity-based plans. • Review and approve equity-based grants and awards, including long-term incentive plan awards, to officers, senior managers, key employees, and other employees of the Company and its subsidiaries under the Company’s equity-based plans. • Review and approve the performance criteria, target awards, payout criteria and like items for the Company’s long-term incentive compensation plans. • Review and approve (a) attainment levels for executive officers under the Company’s annual incentive plan; (b) payments to executive officers under the annual incentive plan; and (c) payments to executive officers under the Company’s long-term incentive compensation plans. • Administer the Company’s equity-based incentive compensation plans and other plans 3 adopted by the Board that contemplate administration by the Committee. • Review and approve special bonuses and/or other awards to executive officers on a case-by- case basis for outstanding performance. • Review and approve the terms of all employment agreements, management continuity agreements and change in control agreements for elected officers. Oversee Regulatory Compliance. • Review and assess risks arising from the Company’s compensation policies and practices for its executive officers and employees, and whether any such risks are reasonably likely to have a material adverse effect on the Company. • In consultation with appropriate officers of the Company, oversee (or provide for the oversight of) regulatory compliance with respect to compensation matters, including with respect to applicable tax laws. • Review and recommend to the Board for approval the frequency with which the Company will conduct Say on Pay Votes, taking into account the results of the most recent shareholder advisory vote on the frequency of Say on Pay Votes required by Section 14A of the Exchange Act, and review and approve the proposals regarding the Say on Pay Vote and the frequency of the Say on Pay Vote to be included in the Company's proxy statement. Board Reports and Annual Evaluation. • Regularly report the Committee’s activities and any recommendations to the Board in such manner and at such times as the Committee or the Board deems appropriate. • Conduct an annual evaluation of the Committee’s performance.

• Review and approve a peer group of companies to be used for marketplace trend analysis and to assess the competitiveness of the Company’s total compensation opportunities for executive officers. 2 • Review and approve corporate goals and objectives relevant to the Chief Executive Officer’s compensation; in conjunction with the evaluation conducted by the Board (including as described in the Company’s Corporate Governance Guidelines), evaluate the Chief Executive Officer’s performance annually in light of these goals and objectives; and determine and recommend to the independent members of the Board for their determination and approval the Chief Executive Officer’s compensation level based on this evaluation and considering comparable market data provided by an independent compensation consultant. • In determining the long-term incentive component of the Chief Executive Officer’s compensation, consider the Company’s performance and relative shareholder return, the value of similar incentive awards to chief executive officers at comparable companies, and the awards given to the Chief Executive Officer in the past. • Review and approve the compensation of other executive officers of the Company, including benefits and perquisites, taking into consideration the Company’s performance, comparable market data, the performance of each executive officer, and such other factors as may, in the Committee’s discretion, be appropriate. • In evaluating and making recommendations regarding, or determining and approving, executive officer compensation, the Committee shall consider the results of the most recent shareholder advisory vote on executive compensation (“Say on Pay Vote”) required by Section 14A of the Exchange Act. • Make recommendations to the Board with respect to the approval of incentive compensation plans for executive officers and all equity-based plans. • For annual (or other short term) incentive plans: o Review and approve annual incentive plans (including performance criteria, target awards, payout criteria and similar award design items applicable under such plans) that are applicable to executive officers and any Company officers reporting directly to the Chief Executive Officer. o Review and approve attainment levels and payments to executive officers and any other Company officers reporting directly to the Chief Executive Officer. • For long-term and equity-based incentive plans: o Review and approve the performance criteria, target awards, payout criteria and similar award design items for recipients of grants and awards under the plans. o Review and approve grants, awards, and attainment levels, including equity-based grants, to recipients of grants and awards under such plans. o Review and approve payments for performance-based grants and awards to executive officers and any other Company officers reporting directly to the Chief Executive Officer, as applicable, under such plans. • Administer the Company’s equity-based incentive compensation plans and other plans adopted by the Board that contemplate administration by the Committee. • Review and approve the terms of all employment agreements, executive severance plan and agreements, management continuity agreements and change in control agreements for elected officers. • Approve the adoption and amendment of Company stock ownership guidelines and annually review compliance with these guidelines. 3 Non-employee Director Compensation. • Review the compensation of non-employee directors and make recommendations to the Board regarding changes to existing compensation levels. • Review and recommend to the Board for its approval equity-based grants and awards to non- employee directors under the Company’s equity-based plans and annually review compliance with Company stock ownership guidelines. Oversee Regulatory Compliance. • Review and assess risks arising from the Company’s compensation policies and practices for its executive officers and employees and assess whether any such risks are reasonably likely to have a material adverse effect on the Company. • In consultation with appropriate officers of the Company, oversee (or provide for the oversight of) regulatory compliance with respect to compensation matters, including with respect to applicable tax laws. • Review and recommend to the Board for approval the frequency with which the Company will conduct Say on Pay Votes, taking into account the results of the most recent shareholder advisory vote on the frequency of Say on Pay Votes required by Section 14A of the Exchange Act, and review and approve the proposals regarding the Say on Pay Vote and the frequency of the Say on Pay Vote to be included in the Company’s proxy statement. Review and Discuss the CD&A; Compensation Committee Report. • With the assistance of management and any outside advisers the Committee deems appropriate (a) review and discuss with management the Company’s disclosures in the CD&A, and, based on this review, make a recommendation as to whether to include it in the Company’s annual report on Form 10-K and proxy statement relating to the Company’s annual meeting of shareholders, and (b) prepare a Compensation Committee Report for inclusion in the Company’s proxy statement or other applicable SEC filings. 4 Board Reports and Annual Evaluation. • Regularly report the Committee’s activities and any recommendations to the Board in such manner and at such times as the Committee or the Board deems appropriate. • Conduct an annual evaluation of the Committee’s performance.

Khandpur added, “In addition, our 2024 safety performance represented the safest year in company history and evidenced that we’ll continue to build upon the many proven foundational strengths of Avient as we execute our new strategy.” 2025 Outlook “As we shared at our Investor Day in December, we laid out a path to grow organic sales 100 – 200 basis points above GDP with margin expansion by intersecting high growth markets and secular trends with our technologies to create platforms that scale,” said Jamie Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Changes in laws and regulations regarding plastics in jurisdictions where we conduct business; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including Avient Protective Materials (APM); • An inability to raise or sustain prices for products or services; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, any recessionary conditions, and terrorism or hostilities Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. WHAT WE DO: WE ARE A FORMULATOR CUSTOM FORMULATION 6 N OVE MBE R 2 , 2023 W E BCAS T P RE S E N TAT I O N Complementary technologies and customer relationships offer opportunity to advance commercial strategy Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications AVIENT PROTECTIVE MATERIALS FIRST YEAR 8 Composites comprises over half of Specialty Engineered Materials, compared to 9% in 2016 Proven history of success in areas such as outdoor high performance, defense and sustainable solutions Composites 44% 56% 2023E Sales Collaboration & InnovationComposites as a % of SEM People & Culture Talented, passionate, and creative associates drive continued integration success and allow two cultures to come together as one Avient Lightweight Protective Laminates: PROJECTILE PROTECTION Dyneema® Fiber Solutions Cushioning + Fit + Comfort: LONG-TERM WEAR reSound™ Versaflex™ Thermoplastic Elastomers Strength + Durability + Light-Weighting: SOLID MOUNTING BRACKETS Nymax™ Bergamid™ Complēt™ Engineered Materials Durability + Lubricity: HELMET LATCHES Lubri-One™ Internally Lubricated Polymers Color Consistency and Weatherability CUSTOMIZED SPECIFICATIONS Avient Color and Additive Solutions Antennae Performance FAST, RELIABLE CONNECTIONS PREPERM™ Low-Loss Dielectric Thermoplastics AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations9 10 AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES 10 Q 3 P E RFO RMAN CE 15.4% 16.3% 2022 PF 2023 Results vs.

While we anticipate weakness in consumer and transportation end markets, we see opportunities for growth in our largest end market, packaging, as well as strength in our high profit portfolios in defense and healthcare. By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. Factors that could cause actual results to differ materially from those implied by these forward- looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs and any recessionary conditions.

We expect momentum from our high profit portfolios in defense and healthcare markets, along with disciplined cost controls and productivity initiatives, to contribute to continued margin expansion over the prior year.” By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs and any recessionary conditions.

You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.