With Excelite IM, processors can achieve density reductions, smoother surface finishes, and notably reduced sink marks resulting in lower scrap rates and higher productivity. New Excelite IM chemical foaming additives are suitable for use in automotive, construction, commercial, personal care packaging or structural foamed applications. 

These panels provide structural bullet-resistant reinforcement to meet UL 752 Level 3 ballistic rating for interior architectural surfaces and components at a lighter weight than traditional panel materials. 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  

The new ECCOH™ XL Cross-Linkable Solutions for photovoltaic cables are REACH compliant and rated for permanent outdoor use with good UV and weather resistance, passing Arrhenius lifetime prediction tests as per IEC 60216-1. 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 

Syncure XLPE formulations are UL-44, UL-4703, and CSA 22.2 certified materials with FT2, FV1, and VW-1 flame retardant ratings. 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  

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • The time required to consummate the proposed acquisitions described in this presentation; • The satisfaction or waiver of conditions in the purchase agreements for the proposed acquisitions; • Any material adverse changes in the business of Clariant’s Color and Additive Masterbatch business; • The ability to obtain required regulatory or other third-party approvals and consents and otherwise consummate the proposed acquisitions; • Our ability to achieve the strategic and other objectives relating to the proposed acquisitions, including any expected synergies; • Our ability to successfully integrate Clariant’s Color and Additive Masterbatch business and achieve the expected results of the acquisitions, including, without limitation, the acquisitions 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 effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions 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 raise or sustain prices for products or services; • An ability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to acquisition and integration, working capital reductions, costs reductions and employee productivity goals; • Information systems failures and cyberattacks; 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. S A F E T Y F I R S T PolyOne Corporation 7 Injuries per 100 Workers Spartech Acquisition 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 0.51 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 G R E A T P L A C E T O W O R K PolyOne Corporation 8 * Pro Forma for sale of DSS Operating Income % of Sales 2006 Q3 YTD 2019 Color, Additives & Inks 1.7% 15.5% Specialty Engineered Materials 1.1% 11.8% Distribution 2.6% 6.3% 2009 2010 2011 2012 2013 2014 2015 2016*2017* 2018 $2.43 P R O O F O F P E R F O R M A N C E C O N S E C U T I V E Y E A R S PolyOne Corporation 9 10 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 A D J U S T E D E P S E X P A N S I O N 2018 2019E $1.65 $1.51 Pro Forma for sale of PP&S T R A N S F O R M A T I O N H E A D L I N E S PolyOne Corporation 10 C O M M O D I T Y T O S P E C I A L T Y T R A N S F O R M A T I O N PolyOne Corporation 11 • Volume driven, commodity production • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures • Shift to value-based selling & an innovative culture • New leadership team appointed • Implementation of four pillar strategy • Investment in commercial training and innovation • Faster growing, high margin focus • Accelerated growth with world class vitality index • Significant commercial resource additions • Expanded margins with specialty focus • Acquired strategic, bolt-on companies to expand technology offerings and improve geographic breadth Volume Value Transformation The Future 2006 - 2013 2013 – 20192000-2005 2006 - 2013 • Landmark portfolio transformation creates specialty growth company • Sustainability / mega- trends drive above market growth 2020 and Beyond F I T W I T H F O U R P I L L A R S T R A T E G Y PolyOne Corporation 12 Specialization • Innovation-led organization with heavy emphasis on R&D • World-class expertise in color formulation • Strong presence in specialty end markets including Consumer, Packaging and Healthcare Globalization • Diverse geographic portfolio with an established presence in every major region • Expands PolyOne’s ability to serve customers in key growth areas including India, China and Southeast Asia Operational • Extensive manufacturing footprint with 46 facilities • Organizational focus on optimizing supply chain to better serve customers • Color design expertise Commercial • Value-focused salesforce with vast experience marketing and commercializing specialty technologies • Diverse customer portfolio with established OEM’s People Experienced and talented associates with a winning mentality L E V E R A G I N G G L O B A L M E G A T R E N D S 13 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R EC O N S U M E R PolyOne Corporation E N D M A R K E T T R A N S F O R M A T I O N PolyOne Corporation 14 Building & Construction 18% 8% 50% 22% High Growth End Markets Percentage of Total Revenue 38% E N D M A R K E T T R A N S F O R M A T I O N PolyOne Corporation 15 8% Building & Construction 38% Wire & Cable 11% Industrial Electrical & Electronic 7% Transportation 18% Building & Construction Wire & Cable Industrial Electrical & Electronic Appliance 3% Textiles Transportation 13% C O M P L E M E N T A R Y G E O G R A P H I C P R E S E N C E PolyOne Corporation 16 38% Europe 33% Asia 19% 22% Europe Asia & Middle East 31% 1% Color & Engineered Materials Clariant Color & Additive Masterbatch Business Net Sales by Geographic Region 31% Europe 36% Asia & Middle East 24% 3% Pro Forma Color & Engineered Materials 531 710 1,042 130 164 208 504 663 880 2014 2018 2019E PF* R&D / Technical Marketing Sales PolyOne Corporation 17 + 34% + 26% + 32% E X P A N S I O N O F COMMERCIAL RESOURCES D R I V I N G G R O W T H $2.9 $2.9 $3.5 2015 2016 2017 2018 2019E PF Total + 9% Organic + 5% Revenue in Billions Total + 10% Organic + 7%+ 47% + 27% + 33% $4.0 $3.2 2019E PF* P R I O R A C Q U I S I T I O N S : P R O O F O F P E R F O R M A N C E PolyOne Corporation 18 Commercial Resources Operating Income ($ in millions) Operating Margins 243 340 $36 $96 11% Established Acquisitions (> 7 years) + 40% + 165% + 900 bps U N I F I E D F O C U S O N S U S T A I N A B I L I T Y PolyOne Corporation 19 2006 - 2013 2013 – 2019 PEOPLE PRODUCTS PLANET PERFORMANCE Clariant Color & Additive Masterbatch Business • Building mini-recycling plants to facilitate customer projects on design for recycling - CycleWorks • Uses packaging additives & colorants to improve recyclability and enhance automated sorting • Manufactures oxygen scavengers to extend shelf-life of perishable items and reduce material requirements • Combines UV-blocking additive colorants & other barriers to prevent spoilage and waste • Offers spin-dyeing solutions that use significantly less water than traditional methods, allowing for sustainable coloration of textiles • Produces infrared absorbing additives that reduce energy requirements for bottle manufacturing ($ in millions) (Continuing Operations) Clariant Color & Additive Masterbatch Business Synergies New 2019E Total Sales $2,860 $1,150 $4,010 2019E Adjusted EBITDA $310 $130 $60 $500 % Margin 10.8% 11.3% 12.5% 2019E CapEx $60 $85 % Sales 2.1% 2.1% 2019E Free Cash Flow $170 $250 2019E Adjusted EPS $1.65 $2.22 2019E PF Adjusted EPS $1.65 $2.50 P O L Y O N E + C L A R I A N T C O L O R & A D D I T I V E M A S T E R B A T C H B U S I N E S S PolyOne Corporation 20 (1) Excludes step-up of depreciation & amortization related to purchase accounting of transaction (1) $0.85/share O V E R 8 5 % O F A D J U S T E D E B I T D A F R O M S P E C I A L T Y PolyOne Corporation 21 46% 66% 0% 60% 80% 100% 2005 2010 2015 2019E PF % o f A d ju s te d E B IT D A * JV's Performance Products & Solutions Distribution Specialty 7% 87% * Adjusted EBITDA is EBITDA excluding corporate costs and special items ** 2019E Pro Forma for PP&S Divestiture and Clariant Color & Additive Masterbatch business acquisition with synergies Specialty EBITDA $14M $117M $273M $500M ** PolyOne Corporation 22 T R A N S A C T I O N O V E R V I E W • Expected mid-2020, subject to regulatory approvals and customary closing conditions Closing Conditions / Timing • Committed financing in place • Permanent financing to be combination of available cash on-hand, new debt and equity component to limit leverage • Equity issuance of $400 to $500MM • Target net leverage below 3.5x, 3.1x synergized, with intention to de-lever below 3.0x within 2 years PolyOne Corporation 23 • $1.45 B net purchase price • Represents 11.1x adjusted EBITDA (excluding synergies), 7.6x adjusted EBITDA (including synergies) • Pre-tax synergies of $60MM expected to be fully realized by the end of 2023 • Synergies realized from sourcing, operational, technology / commercial, and general administrative Transaction Value Synergies Estimated Synergy Breakdown $60MM • Expect EBITDA synergies of $60MM – Proven integration expertise with a decade of acquisition experience – Administrative synergies reflect reduction of duplicative internal and third-party costs • Run rate synergies of $20MM by the end of Year 1 with $60MM achieved by the end of Year 3 • Significant additional opportunity for geographical expansion – Clariant Color & Additive Masterbatch business has complementary regional presence in key growth areas including India & Southeast Asia • Opportunity to accelerate growth with a combined portfolio of innovative solutions aligned with sustainability megatrends Sourcing Operational 30% Administrative 30% PolyOne Corporation 24 S I G N I F I C A N T S Y N E R G Y O P P O R T U N I T I E S C A P I T A L S T R U C T U R E / L E V E R A G E PolyOne Corporation 25 At Close Year 1 Year 2 3.2x 3.5x 3.1x 2.6x Pro Forma with Synergies 2019E PF Two year leverage goal (1) Pro Forma Capitalization is for illustrative purposes only; amounts may vary depending on various market and other factors. Sources Cash from Balance Sheet $465 New Senior Unsecured Notes 650 New Equity 450 Total Sources $1,565 Uses Clariant Masterbatch $1,500 Clariant India Masterbatch 60 Less: Lease Adjustment (113) Net Purchase Price $1,447 Net Cash Acquired 57 Fees, Expenses & OID 61 Total Uses $1,565 ($ Millions) Cash and Cash Equivalents $370 $450M Senior Secured ABL Revolver - Senior Secured Term Loan B due 2026 624 Other Debt 25 Total Senior Secured Debt $649 5.25% Senior Unsecured Notes due 2023 $600 New Senior Unsecured Notes 650 Total Senior Debt $1,899 Net Debt $1,529 New Equity $450 Pro Forma Capitalization (1) PF 12/31/2019 $450 $600 $624 $743 2019 2020 2021 2022 2023 2024 2025 2026 A T T R A C T I V E F I N A N C I N G S T R U C T U R E Attractive Debt Maturity Profile Existing Revolver Existing Senior Notes Existing Term Loan B New Debt Summary Terms on New Debt  $465 million of cash from the balance sheet expected to fund a portion of the purchase price  Bridge financing for remainder fully committed from Citi, Morgan Stanley and Wells Fargo  Permanent financing expected to include a combination of long-term debt and new equity  The timing of the permanent financing is subject to a number of factors, including, but not limited to, market conditions  PolyOne is committed to preserving a strong balance sheet – Target net leverage at close below 3.5x, excluding synergies  Pro forma capital structure positions PolyOne with flexibility to pursue continued growth strategy  New financing expected to have same or better covenant package than existing capital structure  Capital structure would be “covenant lite” Capital Policy  Transaction in line with PolyOne’s disciplined capital allocation policy  Existing PolyOne dividend policy to be maintained  Focus on deleveraging in the near term 2028+ PolyOne Corporation 26 PolyOne Corporation 27 T H E N E W P O L Y O N E : A S P E C I A L T Y G R O W T H C O M P A N Y  Landmark portfolio transformation: > 85% of Adjusted EBITDA from specialty solutions  World-class innovation, technology and service are differentiators  Sustainability initiatives and alignment with megatrends drive above market growth in key end markets and applications:  Capital management is a strength - proven track record of expanding ROIC while increasing invested capital Transaction expected to add $0.85 to pro forma adjusted EPS PolyOne Corporation 28 PolyOne Corporation 29

In addition, demand for composites including Dyneema applications for personal protection were also higher,” said Robert M. Beggs continued, “In the first quarter, we expect to experience similar demand conditions as in the fourth quarter of 2022, driven by negative consumer sentiment, rising interest rates and a slow restart of China. Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in numbers and a personal PIN, which are required to access the conference call.

Second Quarter and Full Year 2023 Outlook The company noted global demand conditions continue to be challenged by negative consumer sentiment, rising interest rates and inflation. This factors in a more conservative growth rate in the second half of the year in light of the present macroeconomic environment.” Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in numbers and a personal PIN, which are required to access the conference call.

This prohibition applies whether the offer or payment is made directly or through another person. Bribes may include: • Cash and cash equivalents (gift cards or gift certificates) • Gifts, entertainment and hospitality where is no clear business purpose or they are in excess of reasonable business needs • Payment of travel expenses or providing vacations • Paying a government official to ignore an applicable customs requirement or to accelerate a tax refund • Personal services, favors, loans • Offers of employment or other benefits to a family member or friend of the individual • Political party and candidate contributions • Charitable donations and sponsorships Other less obvious items can also be a violation. There may be situations where avoiding facilitation payments or kickbacks may put our associate’s (or their families’) personal security at risk.

In 2024, we had our safest year ever with a record low recordable incident rate. The Board recognizes that some transactions, arrangements, and relationships present a heightened potential for conflicts of interest (or the perception of conflicts of interest) and, therefore, has adopted a written Related Person Transactions Policy (the “Policy”) governing these transactions. For purposes of this table and threshold level disclosure, we assumed that the lowest weighted portion of a metric achieved the threshold level of attainment.

Purchase price multiple rapidly declining on strength of business and synergy capture (1) Financial information is pro forma to include a full year of Clariant Color acquisition 11.9% 16.3% Avient Corporation 12 People C U L T U R E I S E V E R Y T H I N G Avient Corporation 13 Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $16 million raised since 2010 Diversity & Inclusion Future Growth in Excess of GDP is Driven By: Our company is positioned to sustainably grow at a rate that exceeds GDP. Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% Avient Corporation 14 Avient Corporation 15 Clariant: Better Together Norbert Merklein • Geographic footprint – Complementary not overlapping. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 Sustainability Targets 27Avient Corporation Sustainalytics 2021 ESG Risk Ranking RANK (1st = lowest risk) PERCENTILE (1st – lowest risk) Chemicals INDUSTRY 75/449 17th Specialty Chemicals SUBINDUSTRY 21/124 17th ISS November 2021 ESG Scores SCORE (1 = Best, 10 = Worst) Environmental 2 Social 1 Governance 4 28Avient Corporation Avient ESG Ratings Products 8 W A Y S W E H E L P C U S T O M E R S B E M O R E S U S T A I N A B L E 29Avient Corporation Enabling Customers’ Recycling Goals R E S O U N D ™ R R E C Y C L E D - C O N T E N T T P E 62% recycle content High performance and quality Reduce waste with refillable features 30Avient Corporation Lightweighting Commercial Trucks P O L Y S T R A N D ™ T H E R M O P L A S T I C C O M P O S I T E L A M I N A T E S 60% Weight reduction in box truck panels Improve fuel economy 100% recyclable 31Avient Corporation 75% less water Enabling Customers to Conserve Resources, Reduce Waste R E N O L ™ S P I N D Y E C O L O R I N G M E T H O D 30% less energy lower carbon footprint 32Avient Corporation Sustainability for a Better Tomorrow *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business Revenue From Sustainable Solutions* 2016-2021 2016 2017 2018 2019 2020PF** 2021E $405M $455M $550M $790M $270 215 170 $930M2021E Sales Avient Corporation 33 The Challenge and the Opportunity Avient Corporation 34 Plastic is Part of the Solution PLASTIC ALTERNATIVE PACKAGING (GLASS & ALUMINUM) Requires… Avient Corporation 35 Source: Franklin Associates, A Division of Eastern Research Group (ERG) 2x more 6x more Water 5x more Weight 2x more Greenhouse gas emissions Brand Owners Goals: Substantially Increase use of Recycled Materials 10 40 14 25 13 22 35 19 13 18 41 Current Additional share needed to reach 2025 target Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) Latest year reported.