Common resins include MDPE, HDPE, PVDF, PVC and Nylon.

Non-nylon based

Non-nylon based

GUIDANCE 11 14.8% 15.8% Adjusted EBITDA Margin % Better-than-expected margins driven by: • Resilient demand for composites and sustainable solutions which improved mix of higher margin applications • Deceleration of raw material inflation • Cost reduction activities Q1 EBITDA BRIDGE 12 $ millions CAI: Price / Mix 19) Inflation (4) SEM: Price / Mix 6) Inflation (4) Net Price Benefit 17) Wage and Energy Inflation (13) Cost Reductions 8) FX (6) Q1 2023 Actual $134) Adjusted EBITDA Q1 2022 Pro Forma $ 176) Demand (48) • Weak demand conditions in-line with previous expectations • Pricing continues to cover inflation of raw materials, wages and energy U.S. & Canada 40% 38% 17% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 18% 23% Building and 6%Telecommunications END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 13 Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20%  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 17 DEFENSE Source: US Department of Defense, defense.gov, NATO17 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 18 $130 $530 $0.60 $2.40 2023 GUIDANCE 19 Sales Adjusted EBITDA $845 $3,400 Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 20 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 21 Sustainable Solutions 32% Asia / LATAM Composites Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 22 SUSTAINABILITY INVESTOR DAY 22 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 23 *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 ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 24 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 25 AP P EN D IX 28 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 30 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION 34% 38% END MARKET REGION 31 34% 21% Building & 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET 52% 35% REGION 32 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 33 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 35 4 4 5 5 5 6 7 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

$600 $592 $3.02 $3.04 FULL YEAR 2022 PERFORMANCE (TOTAL COMPANY PRO FORMA) 19 Sales Adjusted EBITDA $3,712 $3,653 -2% Adjusted EPS -1% + 1% (in millions) (in millions) (+4% excluding FX) (+5% excluding FX) (+9% excluding FX) FULL YEAR 2022 SEGMENT PERFORMANCE 20 CAI $2,402 $2,355 $409 $402 SEM Pro Forma $1,308 $1,300 $278 $272 (+4% excluding FX) - 2% -1% (+5% excluding FX) - 2% (+4% excluding FX) - 2% (+2% excluding FX) PRO FORMA FULL YEAR EPS BRIDGE 21 Pro Forma 2021 Adjusted EPS 3.02$ Foreign Currency (0.23) Russia Import Sales (0.07) Outdoor High Performance (0.13) Color, Additives and Inks 0.18 Specialty Engineered Materials 0.24 Corporate Costs / Other 0.03 Pro Forma 2022 Adjusted EPS 3.04$ FULL YEAR EBITDA BRIDGE (PRO FORMA TOTAL COMPANY) 22 $ millions CAI: Price / Mix 247 Inflation (176) SEM: Price / Mix 121 Inflation (77) Net Price Benefit 115 Wage and Energy Inflation (47) Clariant Color Integration Synergies 23 Incentives, Other Employee Costs 43 FX (34) Full Year 2022 $592 Adjusted Full Year 2021 $ 600 Demand (99) Russia Import Sales (9) • Demand primarily impacted by China lockdowns, 4th quarter industrywide destocking and declining consumer sentiment • Pricing outpaced inflation of raw materials, wages and energy 2023 G U IDA N CE $125 $530 $0.55 $2.40 2023 GUIDANCE 24 Sales Adjusted EBITDA $845 $3,450 Adjusted EPS (in millions) (in millions) CASH FLOW / BALANCE SHEET 25 • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x K E Y G R O W T H D R I V E R S A N D T R A N S F O R M E D P O R T F O L I O GROWTH DRIVERS: PROVEN SUCCESS 27 (1) Pro forma for the acquisition of Avient Protective Materials (APM) COMPOSITES $51 $84 $212 $668 HEALTHCARE $108 $113 $231 $293 8-10% ASIA/EMERGING REGIONS $265 $358 $726 $830 $340 $455 $790 $1,175 SUSTAINABLE SOLUTIONS 8-12% (1) (1)(1) (Sales in $ millions) #1 Color Formulator Dyneema® - World’s Strongest Fiber™ #1 in Composites applications for outdoor high performance #1 in Performance Inks Customized solutions 140+ PhDs on staff Rapid development of innovative products Extensive patent (2,500+) portfolio 33% Vitality Index Better-positioned toward stable, high-growth end markets Consumer, packaging, healthcare and defense comprise nearly 60% of sales Agnostic to raw materials, helping all customers achieve their goals Broad portfolio of diversified sustainable solutions 90%+ of our innovation pipeline invested in sustainable solutions Long-term growth rate well above GDP with expectations of 8-12% LEVERAGING OUR TRANSFORMED PORTFOLIO 28 Building & 4% Telecom. 2022 PF $3.65B sales Leading Positions Sustainable SolutionsDiversified IndustriesSpecialty Formulator (1) 2022 Pro forma for the acquisition of Avient Protective Materials (2) 2020 Pro forma for the acquisition of Clariant Color (1)(2) $340M $455M $790M 2016 2018 2020PF 2022PF $1,175M P EE R C O M PAR IS O N S AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,450 and estimated run-rate CAPEX of $110M. 30 2 4 4 5 5 5 6 7 7 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 32 EV / 2023E EBITDA Historic Multiple 6.5 8.3 10.0 15.6 13.9 13.7 12.8 9.5 18.0 17.5 12.3 10.2 9.7 8.8 8.4 5.9 (2 01 1) (2 01 8) RA W M AT ER IA L OVE RV IE W 34 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives 16% Pigments TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 30% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials Excludes Avient Protective Materials SEGMENT DATA U.S. & Canada 40% 37% 18% Latin America 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE (1) Total company adjusted EBITDA of $592M includes corporate costs $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M 36 C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION US & Canada 34% 38% Latin America END MARKET REGION 37 34% 21% Building & 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 52% 35% REGION 38 19% 8%Industrial 16% Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 39

Nymax™ REC Recycled Nylon Formulations Nymax™ REC Recycled Nylon Formulations Complēt™ Moisture Resistant Nylons

Softer SEBS materials (below 30 Shore A) will shrink more than harder 6 materials. Undercut sprue puller Figure 6. Specific Versaflex OM grades have been specially formulated to bond to PC, ABS, nylon 6/6, PC/ABS, and PPO.

We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT COLOR Key Financial Data (1) 2021E Sales $4.75 billion 2021E EBITDA $580 million 87% of EBITDA from specialty applications (1) As of October 28, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 CLARIANT COST SYNERGIES • On-track to realize $50 million of expected synergies in 2021 – up from earlier estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50M by 2025 The complementary aspects of our combined businesses are unquestionable. This innovation drives performance and is reflective of consistent, strategic investments in technology and people Clariant Color business acquired July 1, 2020 10 30 40 14 22 35 19 18 41 Current Additional share needed to reach 2025 target BRAND OWNERS COMMITTED TO INCREASING USE OF RECYCLED MATERIALS 14 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. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 31 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 3 3 3 4 3 3 5 5 5 6 nt nt ( xc l.

Find out how you can increase the traceability of textile products with Cesa Fiber Tracer Concentrates, a low-investment and efficient taggant technology specifically developed for spun-dyed polypropylene and polyamide (nylon) fibers (Chinese language version) Find out how you can increase the traceability of textile products with Cesa Fiber Tracer Concentrates, a low-investment and efficient taggant technology specifically developed for spun-dyed polypropylene and polyamide (nylon) fibers.

Nylon Alternatives for Powersports Applications Overview, key characteristics and technical data on nylon alternatives for powersports applications