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Our materials address strong consumer demands for enhanced safety, purity, and regulatory compliance.

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. WHAT WE DO: WE ARE A FORMULATOR 6 CUSTOM FORMULATION M AY 3 , 2023 W EB CAS T Keeping Safety First o Relentless focus on best-in-class safety performance as an ACC Responsible Care® organization Exceeding Customer Expectations o Complementary technologies and customer relationships offer opportunity for future revenue synergies o Proven innovation-led commercial strategy with strong brands and participation across the full value chain Collaboration in Innovation o Leveraging Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications People – Culture is Everything o Talented, passionate and collaborative associates drive an effective integration strategy o Strong Great Places to Work® scores reflect positive integration efforts in first year AVIENT PROTECTIVE MATERIALS INTEGRATION 8 AVIENT PROTECTIVE MATERIALS K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders • Body Armor • Helmets • Vehicle Protection 50% MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes 30% CONSUMER Consumer • Outdoor High Performance • Safety Equipment 9 Figures reflect approximate proportions of 2022 sales Q 1 P ER FO RM A N CE Q1 2023 PERFORMANCE VS. FX -11% FX -3% Total Avient -14% YoY Comparison against 2022 pro forma results • Aging infrastructure driving need for greater technological advancements and upgrades • Increased focus on strength and capacity of electrical grid plays into further adoption of composites into the market  UV, weather-resistance, customized capabilities  Best-in-class customer responsiveness  Local high-quality manufacturing, unparalleled breadth of portfolio  Expanding position in insulators, utility poles, crossarms, and wind energy Avient Confidential 16 ENERGY 16 • Fiber-optic investments from AT&T, Corning, Commscope continue to drive industry toward innovation • $42B BEAD program in Infrastructure Bill to increase cable deployments; well-positioned to capitalize on “Made in America” requirement and “last mile” buildout  Flame retardance, weather-resistance enables faster, safer, more reliable connections  Local manufacturing, unparalleled breadth of portfolio  Expanding position in insulation for wire jacketing, 5G buildout TELECOMMUNICATIONS Source: U.S.

Chinaplas 2023, the world's leading technology-oriented plastics and rubber trade fair, is taking place April 17-20 at the Shenzhen World Exhibition & Convention Center. Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports   Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy    

Homepage // News Center // PolyOne Expands Specialty Portfolio with High-Performance Elastomer Technology License Access to this technology enables our customers to tap a leading-edge option for demanding applications. EDITORS: For a high-resolution image, please click here: Licensing Fortrex™ technology from Cooper Standard

NYSE: POL) is showcasing new specialty technologies that have been added to its comprehensive polymer materials and services portfolio. IM3D Surface Imagery Technology, launched in collaboration with to collaborate with many of our existing customers and to introduce some of our latest technologies to new customers also," said

Homepage // News Center // PolyOne Announces Launch of Innovative Specialty Technology to Serve the Healthcare Industry Catheters made using the patent-pending NEU View technology provide optical visibility (translucent) when outside the body and superior visibility under X-ray (radiopaque) when inside the body. PolyOne continues to innovate and develop technologies that benefit our global customers and enable healthcare professionals to improve performance,” said Craig Nikrant, president, Global Specialty Engineered Materials, PolyOne Corporation.

Homepage // News Center // PolyOne Features Innovative Packaging Technologies and Inspiration at PACK EXPO 2015 At the show, PolyOne will also feature a number of its specialty solutions, including a new aluminum cap liner technology, GLS™ Versaflex™ PKG 4190 thermoplastic elastomer (TPE). Additional PolyOne technologies being featured include:

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets.2 T RAN S FO R MAT IO NAL OVE RV IE W Avient Protective Materials Dyneema ® RECENT TRANSACTIONS Acquired Divested $1.45 B $0.95 B 4 Distribution UPDATED CAPITAL STRUCTURE & LIQUIDITY • Proceeds from completed sale of Distribution used to pay near-term maturing debt to strengthen balance sheet • Fixed/floating debt ratio of ~55/45 • Proven track record of deleveraging following major acquisitions through strong free cash flow generation • 2022 pro forma net debt/adjusted EBITDA expected to be 3.1x $725 $725 $575 $500 $600 $525 $650 $650 $600 Capital Structure Cash $544 Undrawn Revolver $250 Liquidity $3.15B $2.40B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes 2023 Notes After Dyneema Acquisition After Distribution Divestiture $794M (1) $250M reflects estimated undrawn revolver following the divestiture of Distribution 5 PREVIOUS TRANSACTIONS Performance Solutions Products & $0.8 B COLOR $1.4 B Acquired (2020)Divested (2019) 6 • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $75 million of realized synergies anticipated in 2022 • Acquisition completed on July 1, 2020 for $1.45 billion. Purchase price multiple rapidly declining on strength of business and synergy capture 7 $133 $201 2019PF 2022E 7 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 8 Distribution DSM Protective Materials BOLT-ON ACQUISITION HISTORY 9 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 100% 0% 60% 80% 100% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 10 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom.

Formerra (Avient Distribution) Dyneema®