Globalization allows us to service our customers with consistency wherever their operations might be around the world. Commercial excellence enables us to deliver value to customers by supporting their growth and profitability with superior customer service. Under this standard, a company recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services.

Customized Performance to Meet Demanding Environmental and Physical Requirements  Product/Service Overview Product/Service Overview

For and on behalf of BSI: Chief Operating Officer Assurance - Americas Certification Date: 2018-05-10 Latest Issue: 2018-05-10 Expiry Date: 2021-05-09 BSI Certificate Number: 691920 IATF Number: 0303891 Page: 1 of 2 This certificate remains the property of BSI and shall be returned immediately upon request. IATF Contracted Office: BSI Assurance UK Limited, registered in England under number 7805321 at 389 Chiswick High Road, London W4 4AL, UK. Including the following support activities: PolyOne Design Center (Solution Center) 33567 Walker Road Avon Lake Ohio 44012 Audited by ABS QE Customer service, Marketing, Human resources, Logistics, Supplier management, Continuous improvement, Info.

We also offer a wide range of services including materials testing, component analysis, custom formulation development, colorant and additive services, part design assistance, structural analysis, process simulations, mold design and flow analysis and extruder screw design. Globalization allows us to service our customers with consistency wherever their operations might be around the world. Concentration of credit risk for trade accounts receivable is limited due to the large number of customers constituting our customer base and their distribution among many 34 POLYONE CORPORATION industries and geographic locations.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. POL IR Presentation - February 2016 2.26.2016 ��PolyOne Investor Presentation�March 2016�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation 25 Consecutive Quarters of EPS Growth PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Color and Engineered Materials at the�Heart of Specialty Transformation Proof of Performance & 2020 Goals Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Innovation Drives Earnings Growth Investing to Drive Growth Design and Service as a Differentiator Customer First Through World-Class Service Debt Maturities & Pension Funding Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return Why Invest In PolyOne? Appendix Recent Acquisitions 2015 Full Year Financial Highlights At a Glance�Color, Additives and Inks At a Glance�Specialty Engineered Materials At a Glance�Designed Structures and Solutions At a Glance�Performance Products and Solutions At a Glance�Distribution Plastics: Key to Future Sustainable Development Application Examples Outdoor Applications Slide Number 32 Authentication Technology Metal Replacement Solutions Range Rover Evoque Interior Slide Number 36 High-Barrier Packaging Containers Aerospace Applications Investor Presentation - March 1, 2016 r36 Investor Presentation - March 1, 2016

Globalization allows us to service our customers with consistency wherever their operations might be around the world. Commercial Excellence enables us to deliver value to customers by supporting their growth and profitability with superior customer service. Our guiding principle of sustainability is to enable our customers’ innovation and sustainability goals through products and services.

BROOKS R U N N I N G S H O E • Exceed current material performance • Optimal cushioning • Fast reaction time • Both energy absorption and return • Provided a 30-50% improvement in cushioning over traditional material • Simplified manufacturing from four-steps to a single injection molding process, yielding a 30-40% reduction in energy usage • Increased sales by up to 40% compared with the previous model Customized TPE Material KEY REQUIREMENTS WHY AVIENT?

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 3 AVIENT OVERVIEW OUR VISION: Creating specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers Key Highlights  Premier formulator of specialized and sustainable materials solutions  Asset-light business model, with flexibility to adapt to customer needs  Best-in-class technology and service (140+ PhDs / 2,500+ patents)  History of transformation through successful M&A while consistently returning cash to shareholders  Poised for continued future growth in excess of GDP $3.14B Revenue $2.36 $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow Over $1B in share buybacks since 2011 Raised dividend for 13 consecutive years, a 15% CAGR since 2011 U.S. & Canada 64% Specialty Engineered Materials Color Additives and Inks 23% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Taxes paid on gain on sale of business 104.1 Adjusted cash provided by operating activities $ 305.7 Capital expenditures $ (119.4) Free cash flow $ 186.3 Three Months Ended Year Ended 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 Other expense, net: $ 4.3 $ (28.4) $ 5.8 $ (59.7) Depreciation & amortization: Color, Additives and Inks $ 22.2 $ 25.2 $ 98.3 $ 101.3 Specialty Engineered Materials 19.8 20.3 81.5 48.7 Corporate 2.2 3.1 9.0 12.5 Depreciation & amortization $ 44.2 $ 48.6 $ 188.8 $ 162.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 84.0 $ 69.5 $ 358.2 $ 402.3 Specialty Engineered Materials 49.2 55.5 224.0 188.8 Corporate (45.9) (76.0) (196.6) (185.3) Other expense, net $ 4.3 $ (28.4) $ 5.8 $ (59.7) EBITDA $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items in EBITDA 22.3 86.8 110.4 162.5 EBITDA - excluding special items $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). 3 AVNT February IR Presentation_w_Non-GAAP Recs.pdf AVNT February IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition Slide Number 6 Slide Number 7 Portfolio transformation Slide Number 9 END MARKET observations�(% of company sales) Regional observations�(% of company sales) Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 2023 segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 26 AVNT Q4 2023 Earnings Presentation.pdf AVNT Q4 2023 Earnings Presentation_For Website_with Non-GAAP.pdf IR Deck - AVNT-2023.12.31 (2.12.24 9PM Milestone February 12 0905 pm).pdf Attachment 3.26.24 - Public Lender Presentation Non-GAAP Attachments (005).pdf

Avient’s customer-focused ColorNow™ digital service uses a mobile app at its core with structural enhancements around it, such as a portable light booth for color matching based on a physical target. These improved services can help customers achieve significant time savings from color matching and selection to sampling, approval, ordering, and delivery. Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. POL IR Presentation (Goldman Sachs Basic Materials Conference - 2016) ��PolyOne Investor Presentation�Goldman Sachs Basic Materials Conference�May 2016�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation Confirmation of Our Strategy 26 Consecutive Quarters of EPS Growth PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Color and Engineered Materials at the�Heart of Specialty Transformation Proof of Performance & 2020 Goals Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Innovation Drives Earnings Growth Ours is Not a Cost Cutting Story Design and Service as a Differentiator Customer First Through World-Class Service Debt Maturities & Pension Funding Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return Why Invest In PolyOne? Appendix 1Q 2016 Financial Highlights At a Glance�Color, Additives and Inks At a Glance�Specialty Engineered Materials At a Glance�Designed Structures and Solutions At a Glance�Performance Products and Solutions At a Glance�Distribution Plastics: Key to Future Sustainable Development Application Examples Outdoor Applications Slide Number 32 Authentication Technology Metal Replacement Solutions Range Rover Evoque Interior Slide Number 36 High-Barrier Packaging Containers Aerospace Applications Investor Presentation - May 17, 2016 r7 Investor Presentation - May 17, 2016