Business Strategy C3.1 (C3.1) Have climate-related risks and opportunities influenced your organization’s strategy and/or financial planning? This strategy has proven successful. Operations Yes Climate related risks influence our operations strategy.

WHO WE ARE – VISION, STRATEGY, CULTURE 3 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. OUR STRATEGY Specialization Differentiates us through unique value-creating offerings to our customers. We partner with Brand Owners / OEMs, processors and assemblers to enable their goals in applications like packaging, healthcare, consumer goods, transportation, wire & cable, building & construction and textiles.

However, when active oxygen scavengers and other additives are used in PET bottle production clarity can decrease, which negatively impacts product appearance, customer appeal and brand value. RECYCLABILITY & rPET Brand owners wishing to operate with a Circular Economy need to use higher levels of rPET in their packaging. Brand owners need to ensure the oxygen scavengers used in their PET bottles maintain their oxygen scavenging efficacy with the introduction of increasing levels of rPET.

Copyright © . 2024 2 Summary and financials Ashish Khandpur Introduction and strategic overview SEGMENT STRATEGY: Color, Additives & Inks SEGMENT STRATEGY: Specialty Engineered Q&AMike Mosley SPOTLIGHT: Building new platforms of scale in Advanced composites Copyright © . 2024 3 Disclaimer Forward-looking statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. items, include statements relating to future actions; prospective changes in raw material costs, product pricing or product demand; future performance; estimated capital expenditures; results of current and anticipated market conditions and market strategies; sales efforts; expenses; the outcome of contingencies such as legal proceedings and environmental liabilities; and financial results. Avient is evolving to its next phase as an innovator of materials solutions to help our customers succeed, while enabling a sustainable world Key messages Our primary focus is on organic revenue growth and margin expansion ► intersect secular trends and high growth markets with our technologies ► catalyze growth in our core build businesses in high growth markets ► hybridization Our strategy is enabled and driven by our focus on (a) portfolio prioritization, (b) amplifying innovation, (c) digital for operational excellence and growth, and (d) leadership, talent and culture for the Avient of the future Copyright © . 2024 7 Avient at a glance

said, "Our balance sheet remains strong, and it provides us with important flexibility to invest in our growth strategy through strategic innovation, commercial resources and bolt-on acquisitions.  Patterson added, "Our ability to innovate across our business segments and execute our strategy is what differentiates PolyOne.  We present Specialty Platform sales, gross margin, selling and administrative expense, and operating income because management believes that this is useful information to investors by highlighting our collective progress in advancing our specialization strategy.

Patterson President and Chief Executive Officer PolyOne Corporation Page 82 PolyOne Core Values Innovation Collaboration Excellence PolyOne Corporation Page 83 Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence PolyOne Corporation Page 84 ‘06-‘14 Adjusted EPS CAGR = 40% Strategy and Execution Drive Results $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 '06 '07 '08 '09 '10 '11 '12 '13 '14 Adjusted EPS Share Price vs. Addressable market exceeds $40 billion • Strong performance demonstrates that our strategy and execution are working • Megatrends and emerging opportunities align with our strengths • Innovation and services provide differentiation, incremental pricing power, and competitive advantage • Strong and proven management team driving growth and performance PolyOne Corporation Page 92 Questions & Answers 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. Adjusted net cash provided by operating activities is calculated as follows: 2008Y 2009Y 2010Y 2011Y 2012Y 2013Y 2014Y Net cash provided by operating activities $ 72.5 $ 229.7 $ 140.8 $ 72.5 $ 106.9 $ 109.0 $ 208.4 Dividends and distributions received from joint ventures (32.9) (36.5) (24.2) (6.0) - - - Pension Cash Contributions 35.9 28.5 37.5 38.1 68.8 69.8 21.6 Adjusted net cash provided by operating activities $ 75.5 $ 221.7 $ 154.1 $ 104.6 $ 175.7 $ 178.8 $ 230.0 Net debt to adjusted EBITDA is calculated as follows: Twelve Months Ended (In millions) December 31, 2011 December 31, 2012 December 31, 2013 December 31, 2014 Short-term portion and current portion of long-term debt $ 3.0 $ 3.8 $ 12.7 $ 61.8 Long-term debt 704.0 703.1 976.2 962.0 Less: Cash and cash equivalents (191.9) (210.0) (365.2) (238.6) Net Debt $ 515.1 496.9 623.7 785.2 Income before income taxes $ 168.9 $ 83.3 $ 151.0 $ 88.4 Interest expense, net 33.7 50.8 63.5 62.2 Depreciation and amortization 53.2 65.8 108.8 123.9 Equity income from equity affiliates (5.7) - - - Special items, impact on income before income taxes (48.1) 55.1 46.3 164.9 Interest expense included in special items - (1.3) (1.9) - Accelerated depreciation included in special items - - (12.7) (23.1) Adjusted EBITDA $ 202.0 $ 253.7 $ 355.0 $ 416.3 Net Debt/Adjusted EBITDA 2.6 2.0 1.8 1.9 Investor Day - May 18 2015 r11 Investor Day - May 18 2015 POL IR Presentation - Investor Day - 5_13_15 Master Version WEBSITE Investor Day Forward-Looking Statements Use of Non-GAAP Measures Agenda Introduction�� Slide Number 6 The Leaders Behind the Team Commodity to Specialty Transformation Proof of Performance Mix Shift Highlights Specialty Transformation Proof of Performance Successfully Navigating Change Since 2012 Strategy and Execution Drive Results Well Positioned for Accelerated Growth Global Color, Additives & Inks�� At a Glance A Case Study for Transformational Success Slide Number 18 Accelerating Growth Who We Are Growing With Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary Global Specialty Engineered Materials�� What We Do At a Glance A Case Study for Transformational Success Slide Number 30 Accelerating Growth Who We Are Growing With Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary �Designed Structures and Solutions�� At a Glance Early Progress A Lot of Work Remains with Tremendous Upside Potential Innovating with Cross-Business Unit Technologies Who We Are Growing With Key Initiatives Platinum Vision Summary Performance Products and Solutions�� At a Glance What We Have Delivered Slide Number 50 Accelerating Growth Who We Are Growing With Geographic Growth Opportunities Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary PolyOne Distribution�� At a Glance Slide Number 61 What We Have Delivered Accelerating Growth Who We Are Growing With Megatrends Aligned with Key End Markets Geographic Growth Opportunities Going Beyond Distribution Platinum Vision Summary Financial Highlights�� Who We Are Growing With 2014 Awards and Recognitions 2014 Financial Highlights Proof of Performance & 2015 Targets Ours is Not a Cost Cutting Story Financial Strength Financial Flexibility Cash to Generate Value Slide Number 79 Slide Number 80 2020 Platinum Vision�� PolyOne Core Values Confirmation of Our Strategy Strategy and Execution Drive Results Formula for Success Track Record of Successful Acquisitions Driving Toward Premier Profitability 2020 Platinum Vision Platinum Vision: Pathway to Accelerated Growth Driving Toward a Premium Specialty Multiple Why Invest In PolyOne?

RECYCLABILITY & rPET Brand owners wishing to operate with a Circular Economy need to use higher levels of rPET in their packaging. Brand owners would like to ensure the oxygen scavengers used in their PET bottles maintain their oxygen scavenging efficacy with the introduction of increasing levels of rPET. For brand owners seeking to maximize their rPET usage up to 100% to achieve sustainability and recyclability targets, Amosorb 4020R offers a cost effective solution with reliable oxygen scavenging performance and low haze levels on final bottles.

Versaflex OM - Rotary Power Tool Handle PREMIUM POWER TOOL BRAND R O T A R Y P O W E R T O O L H A N D L E • Soft touch grip with improved haptics • Reduced vibration • Excellent surface appearance • Bonding to nylon • Utilized global technical services to translate customer’s preferred material in North America to Europe • Enabled brand consistency across the globe, and accelerated time to market Versaflex™ OM 6258 KEY REQUIREMENTS WHY AVIENT?

PREMIUM TOOL BRAND S C R E W D R I V E R H A N D L E • High impact resistance • High tensile strength • Aesthetic surface • Good processability • Customized a nylon 6 based formulation, with an emphasis on the impact properties and processability, yet delivering the desired aesthetic surface • Met the customer’s aggressive timeline and helped troubleshoot application needs to determine the best material solution Custom Edgetek™ Nylon Formulation KEY REQUIREMENTS WHY AVIENT? https://www.polyone.com/products/engineered-polymer-formulations/general-engineered-formulations Premium tool brand

GLS TPE - Bayer Cap - English BAYER® T P E O V E R M O L D E D C A P • Easy to grip and open • Design requirements: • Raised logo • Specific brand color • Optimize retail shelf space/reduce packaging • Improved packaging functionality for both user (ergonomic design) and on shelf (better stacking and reduced packaging) • Offered value-add formulation that allowed customer to extend brand differentiation in the market GLS™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?