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Monthly reporting of production rates, waste generation rates, recycling rates, disposal methods, and compliance.

Issued July 2024

August 27, 2024 SHANGHAI – August 27, 2024 – Avient Corporation, a premier provider of specialized and sustainable materials solutions and services, will showcase its extensive portfolio of synthetic fiber colorants and functional additives for the textile industry at Yarn Expo Autumn, one of Asia’s leading yarn and fiber trade fairs in Shanghai, August 27th through 29th.  Avient will exhibit at Hall 8.2, Stand A137, at Yarn Expo Autumn in the National Exhibition and Convention Center in Shanghai from August 27th to 29th, 2024.  

September 9, 2024 CLEVELAND – September 9, 2024 – Dyneema®, owned by Avient Corporation, a leading provider of specialty and sustainable materials solutions and services, is proud to provide ultra-high-molecular-weight polyethylene (UHMWPE) fiber, unidirectional (UD) composite fabric, and film materials that are manufactured without intentionally added per- and polyfluoroalkyl substances (PFAS) for hard and soft ballistic armor, helmets, and vehicle armor. At the North Carolina FEDTEX 2024 Conference, the US Army Combat Capabilities Development Command (DEVCOM) Soldier Center warned that solutions containing PFAS are becoming less readily available because of regulatory and supply chain uncertainty.

May 30, 2024 LYON, France – May 30, 2024 – Avient Corporation will showcase its portfolio of specialized and sustainable materials solutions and services, including recycled and bio-based thermoplastics and elastomers, next week at France Innovation Plasturgie (FIP), the industry-leading trade show for plastics, composites, and rubber in Lyon, France.   Avient will exhibit at France Innovation Plasturgie from June 4-7, 2024, at booth C55 at the Eurexpo Convention Center in Lyon, France.  

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • The impact of the COVID-19 pandemic has on our business, results from operations, financial condition and liquidity; • Our ability to achieve the strategic and other objectives relating to the acquisition of Clariant’s Masterbatch business, including any expected synergies; • 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 the disposal of plastic 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; • Our ability to continue to pay cash dividends including at the increased rate; • Our ability to consummate and successfully integrate acquisitions; • 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 acquisitions and integration, working capital reductions, cost reductions, and employee productivity goals; • Information systems failures and cyber attacks; 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. 10 2021 O U TLO O K Synergies ($ millions) Initial Three-Year Estimate Revised Three-Year Estimate 2021 Expected Realization Administrative $ 18 $ 20 $ 15 Sourcing 24 30 15 Operational 18 25 5 Total Synergies $ 60 $ 75 $ 35 CLARIANT INTEGRATION & COST SYNERGIES UPDATE 12 • Integration going extremely well: synergy target increased from $60 million to $75 million • $5 million of synergies in 2020 and expect to realize $35 million in 2021 • Relentless focus on guiding principles of safety first, employee collaboration and exceeding customer expectations • Future revenue synergies are not part of these estimates and represent additional growth over the long term $86 $103 $0.53 $0.70 ORGANIC GROWTH PROJECTIONS – Q1 13 Sales Adjusted Operating Income $991 $1,090 + 10% Adjusted EPS + 20% + 32% (in millions) (in millions) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition $308 $360 $1.93 $2.40 ORGANIC GROWTH PROJECTIONS – FULL YEAR 14 Sales Adjusted Operating Income $3,783 $4,100 + 8% Adjusted EPS + 17% + 24% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (in millions) (in millions) 2020 Pro forma $3,783 $308 Sustainable Solutions 60 11% 24 Healthcare 60 11% 18 Composites 20 10% 10 Growth in Emerging Regions 50 7% 11 Other (GDP growth) 82 5% 11 Sub-total $4,055 7% $382 COVID Response Applications (25) - (11) Outdoor High Performance Applications (15) - (7) Asia Payroll Tax Subsidy (COVID) - - (4) FX Impact 85 - 7 Synergies - - 30 Incentives, Travel, Other Employee Costs - - (37) 2021 Estimated $4,100 8% $360 2021 ORGANIC SALES AND OPERATING INCOME 15 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (2) COVID Response Applications: facemasks, personal protective equipment Sales Growth Rate Operating Income$ millions (2) CASH FLOW AND LEVERAGE 16 • Asset light business generates significant free cash flow • Cash generation in 2021 partially offset by restructuring activities to capture synergies associated with the Clariant Masterbatch acquisition • Cash flow deployed to M&A, opportunistic share repurchases and balance sheet / leverage reduction 3.5x 2.7x 2.1x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition ($ millions) 2020 2021E Adjusted EBITDA 382 510 Working Capital: Source / (Use) 116 (30) Cash Taxes (40) (53) Interest Paid (67) (76) CapEx (62) (75) CapEx for Synergy Capture (2) (20) Restructuring for Synergy Capture (11) (25) Other 22 19 Free Cash Flow 338 250 We sell solutions not commodities. That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 18 AVIENT’S VALUE CREATION LEVERS 19 Exposure to high growth end markets Investment in commercial resources and innovation Strong free cash flow generation / capital deployment Clariant Masterbatch synergies COVID recovery Re-Rating: Current share price valuation Avient is poised for near-term and long-term shareholder value creation. 20 • 8% increase in sales drives 24% increase in adjusted EPS to $2.40 ($2.70 excluding step-up depreciation and amortization) as a result of continued growth in sustainable solutions and synergy capture • Clariant synergy capture ahead of schedule: $35M of savings planned from Clariant Masterbatch acquisition • Adjusted EBITDA of $510M – highest level in company history • Deleveraging ahead of schedule – 2.1x net debt to adjusted EBITDA by the end of 2021 2021 PROJECTIONS PEER COMPARISONS 21 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • 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; • The current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows, including without any limitation, any supply chain and logistics issues; • Changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; • 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; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2020 under Item 1A, “Risk Factors.” Purchase price multiple rapidly declining on strength of business and synergy capture 10 $133 $205 2019PF 2021 10 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies 11.9% 16.2% 2019PF 2021 EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business ($ millions) Initial Synergy Estimate 2021 Synergy Realization Total Synergies Expected Administrative $ 18 $ 29 $ 40 Sourcing 24 20 24 Operational 18 5 21 Total Synergies $ 60 $ 54 $ 85 CLARIANT COLOR INTEGRATION & COST SYNERGIES UPDATE 11 • Integration going extremely well: synergy target increased to $85 million at December 9th Investor Day • Relentless focus on guiding principles of safety first, employee collaboration and exceeding customer expectations • Future revenue synergies are not part of these estimates and represent additional growth over the long term SUSTAINABILITY FOR A BETTER TOMORROW • Revenue from sustainable solutions grew 16% in 2021 and expected to grow 8-12% in 2022 as our innovation efforts and collaboration with customers accelerates • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options *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 2016 2017 2018 2019 2020PF** 2021 $405M $455M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $915M $340M PEOPLE C U L T U R E I S E V E R Y T H I N G Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $16 million raised since 2010 Diversity & Inclusion 13 Q4 2020 $997 $80 Sustainable Solutions 23 12% 8 Healthcare 53 43% 9 Composites 7 22% 2 Growth in Asia / LATAM 14 10% 3 Other 118 23% 2 Sub-total $1,212 22% $104 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (10) (13) Q4 2021 $1,202 21% $85 Q4 2021 SALES AND OPERATING INCOME 14 Sales Growth Rate Operating Income$ millions Q4 EBITDA BRIDGE 15 Price increases more than offsets raw material and supply chain impacts Q4 2020 $ 118 Demand - $ millions CAI: Price / Mix 62 Inflation (45) SEM: Price / Mix 25 Inflation (20) Distribution: Price / Mix 114 Inflation (109) Net Price Benefit 27 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (13) Q4 2021 $ 126 Transportation (5)$ Outdoor High Performance (3) Other 8 Total Demand - Q4 2021 SEGMENT PERFORMANCE 16 $526 $581 SEM Distribution $58 $61 + 11% + 6% $305 $425 $18 $22 + 39% + 22% $191 $228 $30 $29 + 19% - 3% 2022 O U TLO O K REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate 2022E Growth Rate Sustainable Solutions 8–12% 12% Healthcare 8–10% 10% Composites 10% 3% Asia / LATAM 5% 6% Other (GDP growth) 2–3% 2–3% Avient 6.5% 6% 18 Excluding Outdoor High Performance 13% (7.5% excl. FX) 2022 GROWTH PROJECTIONS 19 $3.05 $3.50 2021 2022E Full Year – Adjusted EPS + 15% (+ 17% excluding FX) $0.89 $0.95 2021 2022E Q1 – Adjusted EPS + 7% (+ 10% excluding FX) ($ millions) Q1 Full Year Q1 Full Year 2021 - Actual 1,162$ 4,819$ 123$ 429$ Sustainable Solutions 27 110 12 44 Healthcare 15 66 4 13 Composites (excl.Outdoor High Performance) 11 29 5 13 Outdoor High Performance Applications (7) (20) (4) (10) Growth in Asia / LATAM 10 51 3 11 Other 57 115 9 12 Sub-total 1,275$ 5,170$ 152$ 512$ Wage Inflation and Overtime (12) (18) Other Supply Chain Costs (4) (7) FX Impact (25) (70) (4) (8) Synergies 4 15 Travel, Other Employee Costs (1) (4) 2022 - Estimated 1,250$ 5,100$ 135$ 490$ Adjusted 2022 SALES AND OI – Q1 AND FULL YEAR 20 ($ millions) 2021 2022E Cash Flow from Operating Activities 234$ 385$ Less: Run-Rate CapEx (86) (90) CapEx for Clariant Integration (15) (20) CapEx for IT System Upgrade - (25) Total CapEx (101) (135) Free Cash Flow 133$ 250$ Adjusted EBITDA 581$ 635$ Net Debt / Adjusted EBITDA 2.2x 1.8x 21 CASH FLOW / LEVERAGE 22 • Record results – highest level of sales ($4.8B) and earnings ($3.05 adjusted EPS) in company history • Successful Clariant Color integration – net debt to adjusted EBITDA reduced to 2.2x, one-year ahead of schedule • Recognized as one of America’s Most Responsible Companies by Newsweek • Earned 3rd consecutive Great Place to Work certification 2021 HIGHLIGHTS 23 • 15% adjusted EPS growth to $3.50, led by growth in sustainable solutions and increased synergy realization • Continued strong synergy capture from the Clariant Color integration: $75M anticipated run-rate synergies by the end of 2022 • Adjusted EBITDA of $635M represents 9% growth above 2021 – 11% excluding the impact of foreign currencies • Deleveraged to 1.8x net debt to adjusted EBITDA by the end of 2022 2022 SUMMARY PEER COMPARISONS 25 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

Hanna consolidate • Cultures clash – commodity wins • Dependent on income derived from commodity joint ventures The First 6 Years • Globally organized along three strategic platforms • Non-core equity investment dispositions • Talent upgrades, discipline instilled throughout organization • New CEO hired to transform POL into specialty business �18 of 20 officers new • Implemented four pillar strategy • Nearly 50% of The Second 6 Years History of PolyOne – A Transformation • Focused on increasing volume, not profits • Heavily tied to cyclical markets 2000 2006 2012 The FormationThe Formation The TransformationThe Transformation The New PolyOneThe New PolyOne organization • Demonstrated ability to deliver • Nearly 50% of business operating income derived from Specialty Platform* • Specialty assets acquired *Pro forma for ColorMatrix acquisition Page 8 30% 50% 70% 90% $10 $12 $14 $16 $18 PolyOnePolyOne Stock Price S&P 500 (relative performance) Strategy and Execution Drive Results | | | | -50% -30% -10% 10% 30% $0 $2 $4 $6 $8 $10 2006 2007 2008 2009 2010 2011 2012 Page 9 Four Pillar Strategy The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Page 10 60% 80% 100% % o f O p e ra ti n g I n co m e * Old PolyOne Transformation 2012 Target “What We Said” Mix Shift Highlights Specialty Transformation Ahead of Schedule *Operating Income excludes Corporate Charges ** Pro Forma for the acquisition of ColorMatrix and divestiture of SunBelt 2% 34% 42% 50% >50% 0% 20% 40% 2005 2008 2011 2011** 2012 % o f O p e ra ti n g I n co m e * JV's PP&S Distribution Specialty Specialty OI $5M $46M $89M $117M “What We Said” Page 11 2007 2012 Target 2011 “Where we were” “What we said” “Where we are” 1) Operating Income % Specialty 3.2% 10% - 12% 8.9% PP&S 6.1% 8% - 10% 7.2% Pro forma ColorMatrix Proof of Performance Distribution 3.0% 4% - 5% 5.6% 2) Specialty Platform sss% of Operating Income 20% >50% 50% 3) Specialty Vitality Index 21% 35% - 40% 49% 4) ROIC* (pre-tax) 11% >15% 16% 5) Sales outside the US 37% >40% 40% *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 12 2011 Pro forma ColorMatrix 2015 Target “Where we are” “Where we expect to be” 1) Operating Income % Specialty 8.9% PP&S 7.2% 12 – 16% 9 – 12% Elevating our Expectations and Yours PP&S 7.2% Distribution 5.6% 2) Specialty Platform % of Operating Income 50% 3) ROIC* (after-tax) 10% 4) Adjusted Annual EPS Growth 3 yr CAGR = 71% 9 – 12% 6 – 7.5% 65 – 75% 15% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 13 • Four pillar strategy, coupled with our ability to execute is driving results • Strong leadership team driving growth & executing • Innovation and services provide differentiation and How do we get there?

When manufacturing blow molded bottles intended for food and beverage, industrial chemical and personal care markets, issues managing pearlescence and haze can lead to costly delays and disruptions – including unwanted downtime, higher scrap rates and quality concerns.