The acquired Accella technology portfolio complements our existing specialty business, and expands our presence in fast-growing end markets that are aligned with key megatrends.” We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share, Adjusted Operating Income and Free Cash Flow, to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Global Compact & fulfilled Communication of Progress (COP) requirements • New Sustainability Strategy overview page including our 2022 AIP ESG metrics • New ESG Performance page with ESG ratings, awards, and certifications • Increased disclosures on carbon emissions, including disclosure of Climate Change Scenario Analysis • Added new Product Stewardship and Chemical Management policies • Enhanced data reporting for Workforce Demographics • Improved social disclosures on human rights, dependent care and special leave and strategic training management 2021 SUSTAINABILITY REPORT Launching integrated sustainability website in parallel with report Aligned with leading reporting frameworks 9 ESG PERFORMANCE & AWARDS 10 84th ENVIRONMENTAL SOCIAL GOVERNANCE 2 1 3 (as of 6/30/22) 2022 O U TLO O K $429 $490 2021 2022E $3.05 $3.50 2021 2022E FY 2022 GUIDANCE (TOTAL COMPANY: CURRENT PORTFOLIO) 12 Sales Adjusted Operating Income $4,819 $5,100 2021 2022E + 6% Adjusted EPS + 14% + 15% (in millions) (in millions) (+ 9% excluding FX) (+ 18% excluding FX) (+ 20% excluding FX) 13 CASH FLOW / LEVERAGE ($ millions) 2022E Cash Flow from Operating Activities 400$ Less: Run-Rate CapEx (90) CapEx for Clariant Integration (10) CapEx for IT System Upgrade (15) Total CapEx (115) Free Cash Flow 285$ Adjusted EBITDA 635$ Net Debt / Adjusted EBITDA 1.6x 14 DYNEEMA / DISTRIBUTION UPDATES • Strong performance so far in 2022 in-line with our modeling • Acquisition to be finalized as early as September 1, pending standard regulatory process and closing conditions • Encouraging interest thus far from potential buyers for world-class business with a strong track record • Second round bids due in August DISTRIBUTION 15 PRO FORMA MODELING UPDATE 2022E ($M) Revenue 5,100$ 415$ 5,515$ (1,635)$ 3,880$ Adjusted EBITDA 635 130 765 (109) 656 EBITDA % 12% 31% 14% 7% 17% Adj.

Market Needs: Structural Components, Regulatory Compliance, Halogen Free Cesa™ Additive Masterbatches are utilized for solar back sheets to enhance the halogen-free mono material structure and protect against voltage breakdowns 

Transforming Modular & Offsite Construction with Advanced Composites APPLICATION GUIDE Siding & Cladding Impact resistance; thermal expansion reduction; superior strength-to-thickness ratio compared to traditional siding Roofing Systems Impact resistance; flexural strength; thermally insulative; will not contribute to mold or rot Interior Wall, Floor, & Ceiling Panel Systems Improved structural integrity; integrated fire protection; customized dimensions & finishes; thermal insulation; water, pest, & impact resistance Doors Impact resistance; ballistic resistance; high strength-to-weight ratio Exterior Sheathing Continuous insulation; impact, moisture & rot resistance; lightweight construction Garage Doors Impact & corrosion resistance; high flexural strength; customized dimensions & finishes; weatherability; UV stability; weight reduction Flood Barriers Moisture & corrosion resistance; durable; will not contribute to mold growth Composite Decking & Lumber Reinforcements for increased strength; material & weight reduction Cabinetry & Storage Weight reduction; customized dimensions & finishes Hammerhead™ FR Flame Retardant Composite Panels & Laminates Hammerhead™ & Polystrand™ Composite Panels GlasArmor™ & ThermoBallistic™ Ballistic Panels Polystrand™ Continuous Fiber Tapes ADVANCED COMPOSITES FOR BUILDING & CONSTRUCTION Polystrand™ Continuous Fiber Laminates Storm Shutters Impact & ballistic resistance; superior strength-to-weight ratio Safe/Panic Rooms Ballistic & impact resistance 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation. MATERIAL SOLUTION DESCRIPTION KEY CHARACTERISTICS POTENTIAL APPLICATIONS Hammerhead™ FR Flame Retardant Composite Panels Industry-first flame retardant thermoplastic composite panels that meet ASTM E84 Class A standards for flame spread and smoke developed and configurations available to meet NFPA 286 corner room burn testing • Excellent flame performance • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Interior Wall, Floor & Ceiling Panel Systems • Garage Doors • Interior & Entry Doors • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Hammerhead™ and Polystrand™ Composite Panels Thermoplastic composite panels constructed with Polystrand™ continuous fiber laminates thermally bonded to thermoplastic foam or honeycomb cores • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Garage Doors • Interior Entry Doors • Interior Wall, Floor & Ceiling Panel Systems • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Polystrand™ Continuous Fiber Tapes & Laminates High strength unidirectional (UD) glass fibers combined with thermoplastic resins available in unidirectional tapes or multi-ply laminates • High strength and stiffness • Enables impact resistance • Formulations available to meet ASTM E84 Class A and Class B flame/smoke rating • Composite Deckng • Interior & Entry Doors • Roofing Systems GlasArmor™ Ballistic Resistant Panels Ballistic protection constructed from layers of 0°/90° woven E-glass fiber reinforcements with a proprietary thermoset resin system • UL 752 Level 1–3 compliant • Less than 25% the weight of comparable steel panel • 1-hr fire rating per ASTM E119* • Safe/Panic Rooms • Garage Doors • Interior & Entry Doors ThermoBallistic™ Thermoplastic Panels Industry-first thermoplastic ballistic resistant panels thermally formed with layers of 0°/90° UD E-glass fiber reinforcements and polyolefin-based resin systems • UL 752 Level 3 compliant • Extremely lightweight • Moisture, UV, and corrosion resistant • Safe/Panic Rooms • Garage Doors • Interior & Entry Doors * UL Level 3 panel was fire tested as part of a wall system with steel studs and drywall facesheet

The comprehensive publication is issued in advance of Avient’s upcoming Sustainability Day to be held on September 20, 2023. Sustainability remains a crucial matter in our world today, and it’s also the largest of our four key growth drivers,” Mr. Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise. Cable jacket/sheath– Made of PE or PVC 9 Fiber-Line Product PolyOne Materials F I B E R O P T I C A L G R O W T H D R I V E R S PolyOne Corporation 20 5G Networks  Enable lower latency, greater flexibility & efficiency  Installation of these networks are in the very early stages  Installation will start in urban hubs and will continue to expand into suburban and rural areas  By 2025, only 14% of the world will have 5G connections  Growth is expected over multi- year period 5G technology will be a leading growth driver in fiber optic cable for several years 10x Speed Increase & 8x More Antennae Required 5G vs. 4G PolyOne Corporation 21 Safety Technology Geography Service FinancialPeople Low EH&S risk profile New and complementary technologies Leverage our global footprint Strong customer relationships Foundational operating margins of 8-10% with ability to double Motivated team with a specialty culture I N V E S T - T O - G R O W M & A S T R A T E G Y PolyOne Corporation 22 Capture sourcing synergies Cross-sell & blend technology 8-10% operating margins I N V E S T - T O - G R O W M & A P L A Y B O O K Protect customers Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First! Baird Global Industrial conference Forward Looking Statements USE OF �NON-GAAP�MEASURES Vision Safety First PolyOne�pro forma 2018 Revenue | $2.9 billion* Slide Number 7 Sustainable Path to Double-Digit EPS Growth Investment in Commercial Resources driving growth The Evolving Customer Relationship Slide Number 11 Aligning with trends for Growth Innovation 3 Horizons of Development Innovation Spotlight: Composites Composites Refresher Strategic Investment History COMPOSITES in Transportation PolyOne applications in Fiber optic cables Fiber optical growth drivers Invest-to-Grow M&A Strategy Invest-to-Grow M&A Playbook Invest-to-Grow Proof of performance Invest-to-Grow Driving the future Strong Pipeline�driven by fragmented Market Returning cash to shareholders�Over $1.2 Billion since 2011 Why Invest In PolyOne?

Overview of key characteristics, markets and applications eBook Smart Materials™ Advanced Composites for Demanding Applications - eBook Take a comprehensive look at composite materials to help you identify the best solution for your needs.

advancing through commercial roles, P&L responsibilities and executive positions, ultimately serving as president and general manager of the company’s Technical Specialties division. Julie played a key role in transforming and evolving PolyOne’s marketing function to support our specialty strategy,” Mr.

Cesa fiber tracer concentrates comply with the fiber industry’s key regulatory requirements by EN, DIN, and UNI. Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Avient materials can address key EVSE performance, function, and design areas including outdoor durability, impact resistance, thermal management, and fire safety. Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy