This innovation drives performance and is reflective of consistent, strategic investments in our portfolio…and people. 2020 Pro forma $991 $86 Sustainable Solutions 15 11% 6 Healthcare 28 22% 6 Composites 6 10% 3 Growth in Emerging Regions 44 30% 10 Other 53 10% 7 Sub-total $1,137 15% $118 FX Impact 25 - 2 Synergies - - 11 Incentives, Travel, Other Employee Costs - - (8) 2021 Actual $1,162 17% $123 Q1 2021 ORGANIC SALES AND OPERATING INCOME 18 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Sales Growth Rate Operating Income$ millions 19 Wire & Cable Transportation Industrial Healthcare Packaging Consumer Q1 2020PF Q1 2021 (2) Financial information is presented on a constant currency basis (1,2) (42% of total revenue) (58% of total revenue) Q1 END MARKET SALES PERFORMANCE +17% +14% +8% +10% +8% +22% +5% +24% Q 2 AN D FU LL Y EA R 2021 O U TLO O K A S O F A P R I L 3 0 , 2 0 2 1 W E B C A S T $69 $112 $0.42 $0.80 ORGANIC GROWTH PROJECTIONS – Q2 21 Sales Adjusted Operating Income $870 $1,100 + 26% + 62% + 90% (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition FULL YEAR GUIDANCE INCREASED 22 Sales Adj. APPENDIX Performance Additives Pigments TiO2 12% Dyestuffs 4%Polyethylene Nylon Polypropylene Other Raw Materials Styrenic Block Copolymer ~1/3 hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 31 • Exiting 2020, the majority of hydrocarbon based raw material markets were experiencing price inflation and tight inventory • Winter Storm Uri in the Gulf Coast caused further stress on the situation for 2021 • Raw materials most impacted include polyethylene, polypropylene and nylon • We purchase over 8,000 different raw materials to formulate our customized solutions and unique specifications Annual Purchases RAW MATERIAL UPDATE Based on 2020 pro forma purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% 26% 16% Latin America 2020 SEGMENT, END MARKET AND GEOGRAPHY 33 GEOGRAPHY REVENUESEGMENT FINANCIALS 21%Industrial Building & Electrical & END MARKET REVENUE All data reflects 2020 Pro forma for acquisition of the Clariant Masterbatch business. (1) The total company sales and EBITDA of $3,783M and $457M, respectively, include intercompany sales eliminations and corporate costs $2,043M $331M $709M $124M $1,110M $70M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $457M$3,783M 35% 14% Building & Electrical & C O L O R , A D D I T I V E S & I N K S 2020 PF REVENUE | $2 .0 BILLION 31% 40% 22% Latin America END MARKET REGION 34 2020 figures Pro forma for acquisition of the Clariant Masterbatch business 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 24% Wire & Cable(1) 24% Electrical & 13% 11% Building & 2020 REVENUE | $709 MILLION END MARKET 58% 19% REGION 35 (1) Approximately 50% of Wire and Cable sales are associated with Fiber Optic Cabling DI S TR IBU T I ON 2020 REVENUE | $1 .1 B ILL ION 25% 20% 14% Electrical & Building & 1% 82% Latin America END MARKET REGION K E Y S U P P L I ER S 36 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 32% 27% 12% Building & Electrical & 9% (16% of sales) 34% 16%Healthcare 17% Building & Electrical & (26% of sales) 2020 figures Pro forma for acquisition of the Clariant Masterbatch business 37 26% 19% 13% 16% Building & Electrical & US & Canada (50% of sales) 45% Building & Electrical & 2% Wire & Cable 1% LATAM (8% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) March 31, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Adjusted Results Income from continuing operations before income taxes $ 102.6 $ 2.4 $ 105.0 Income tax expense - GAAP (22.9) — (22.9) Income tax impact of special items — (0.9) (0.9) Tax adjustments — 1.1 1.1 Net income attributable to noncontrolling interests (0.4) — (0.4) Net income from continuing operations attributable to Avient shareholders $ 79.3 $ 2.6 $ 81.9 Net income / EPS $ 0.86 0.03 $ 0.89 Weighted-average diluted shares 92.2 92.2 92.2 Reconciliation to Consolidated Statements of Income March 31, 2021 Operating income - GAAP $ 120.4 Special items in operating income 2.4 Adjusted Operating income $ 122.8 1 Business Segment Operations March 31, Year Ended December 31, 2021 2020 2020 2019 2018 Sales: Color, Additives and Inks $ 609.3 $ 256.5 $ 1,502.9 $ 1,003.8 $ 1,046.5 Specialty Engineered Materials 216.5 185.3 708.8 745.7 645.8 Distribution 362.7 289.5 1,110.3 1,192.2 1,265.4 Corporate and eliminations (26.2) (19.8) (79.9) (79.0) (76.7) Sales $ 1,162.3 $ 711.5 $ 3,242.1 $ 2,862.7 $ 2,881.0 Gross margin: Color, Additives and Inks $ 197.5 $ 89.4 $ 484.4 $ 338.4 $ 353.4 Specialty Engineered Materials 64.7 52.6 207.6 200.2 171.7 Distribution 39.3 33.6 124.0 132.1 125.8 Corporate and eliminations 0.9 (4.1) (31.7) (13.5) (26.1) Gross margin $ 302.4 $ 171.5 $ 784.3 $ 657.2 $ 624.8 Selling and administrative expense: Color, Additives and Inks $ 108.7 $ 48.9 $ 303.6 $ 191.0 $ 194.9 Specialty Engineered Materials 30.5 30.3 113.2 116.5 99.4 Distribution 15.3 14.2 54.5 56.7 54.3 Corporate and eliminations 27.5 25.3 123.7 136.2 97.6 Selling and administrative expense $ 182.0 $ 118.7 $ 595.0 $ 500.4 $ 446.2 Operating income: Color, Additives and Inks $ 88.8 $ 40.5 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 34.2 22.3 94.4 83.7 72.3 Distribution 24.0 19.4 69.5 75.4 71.5 Corporate and eliminations (26.6) (29.4) (155.4) (149.7) (123.7) Operating income $ 120.4 $ 52.8 $ 189.3 $ 156.8 $ 178.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 116.2 $ 51.4 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 42.0 29.8 124.4 113.2 95.5 Distribution 24.2 19.5 70.2 75.9 72.2 Corporate and eliminations (24.9) (28.0) (146.2) (144.3) (119.3) Other income, net 1.5 1.6 24.3 12.1 (12.9) EBITDA $ 159.0 $ 74.3 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 19.1 % 20.0 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 19.4 % 16.1 % 17.6 % 15.2 % 14.8 % Distribution 6.7 % 6.7 % 6.3 % 6.4 % 5.7 % 2 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Three Months Ended March 31, Year Ended December 31, 2021 2020 2020 2019 2018 Sales: Color, Additives and Inks $ 609.3 $ 256.5 $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(1) — 279.4 540.4 1,118.6 1,209.8 Pro forma sales $ 609.3 $ 535.9 $ 2,043.3 $ 2,122.4 $ 2,256.3 Operating income: Color, Additives and Inks $ 88.8 $ 40.5 $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(1) — 23.0 45.0 72.9 80.3 Pro forma operating income $ 88.8 $ 63.5 $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 27.4 $ 10.9 $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(1) — 15.1 30.1 60.3 61.2 Pro forma depreciation & amortization $ 27.4 $ 26.0 $ 105.2 $ 103.0 $ 105.5 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 116.2 $ 51.4 $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(1) — 38.1 75.1 133.2 141.5 Pro forma EBITDA $ 116.2 $ 89.5 $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 19.1 % 16.7 % 16.2 % 15.2 % 15.3 % March 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Sales $ 711.5 $ — $ 711.5 $ 279.4 $ 990.9 Operating income 52.8 9.7 62.5 23.0 85.5 Interest expense, net (9.4) — (9.4) (12.8) (22.2) Other income, net 1.6 (0.1) 1.5 — 1.5 Income taxes (11.9) (1.0) (12.9) (2.4) (15.3) Net income from continuing operations attributable to Avient shareholders $ 33.1 $ 8.6 $ 41.7 $ 7.8 $ 49.5 Weighted average diluted shares 86.7 Impact to diluted shares from January 2020 equity offering 6.1 Weighted average diluted shares 92.8 EPS $ 0.53 (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 3 Three Months Ended June 30, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(2) Pro Forma Adjusted Sales $ 609.1 $ — $ 609.1 $ 261.1 $ 870.2 Operating income $ 38.0 $ 9.0 $ 47.0 $ 22.0 $ 69.0 Interest expense, net (16.2) — (16.2) (5.3) (21.5) Other income, net 9.5 (0.3) 9.2 — 9.2 Income taxes (7.9) 0.7 (7.2) (3.8) (11.0) Net income attributable to non controlling interests (0.4) — (0.4) — (0.4) Net income from continuing operations attributable to Avient shareholders $ 23.0 $ 9.4 $ 32.4 $ 12.9 $ 45.3 Weighted average diluted shares 91.8 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 107.1 Pro forma adjusted EPS $ 0.42 (2) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition Year Ended December 31, Reconciliation to Adjusted EBITDA 2020 2019 2018 Net income from continuing operations – GAAP $ 133.8 $ 75.7 $ 87.4 Income tax expense 5.2 33.7 14.4 Interest expense 74.6 59.5 62.8 Debt extinguishment cost — — 1.1 Depreciation and amortization from continuing operations 115.0 78.1 72.6 EBITDA $ 328.6 $ 247.0 $ 238.3 Special items, before tax 66.2 61.7 59.5 Interest expense included in special items (10.1) — — Accelerated depreciation included in special items (3.2) — (3.0) Adjusted EBITDA $ 381.6 $ 308.7 $ 294.8 4 December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(3) Pro Forma Adjusted Sales $ 3,242.1 $ — $ 3,242.1 $ 540.4 $ 3,782.5 Operating income $ 189.3 $ 73.7 $ 263.0 $ 45.0 $ 308.0 Interest expense, net (74.6) 10.1 (64.5) (18.1) (82.6) Other income, net 24.3 (17.6) 6.7 — 6.7 Income taxes (5.2) (41.4) (46.6) (6.2) (52.8) Net income attributable to noncontrolling interests (1.8) — (1.8) — (1.8) Net income from continuing operations attributable to Avient shareholders $ 132.0 $ 24.8 $ 156.8 $ 20.7 $ 177.5 Weighted average diluted shares 90.6 Impact to diluted shares from January 2020 equity offering 1.5 Pro forma weighted average diluted shares 92.1 Pro forma adjusted EPS $ 1.93 Reconciliation of Pro Forma Adjusted EBITDA from continuing operations Operating income and other income, net $ 213.6 $ — $ 56.1 $ 269.7 $ 45.0 $ — $ 314.7 Depreciation and amortization 115.0 (3.2) 111.8 30.1 141.9 EBITDA from continuing operations $ 328.6 $ 52.9 $ 381.5 $ 75.1 $ 456.6 December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Sales $ 2,862.7 $ — $ 2,862.7 $ 1,118.6 $ 3,981.3 Operating income $ 156.8 $ 71.7 $ 228.5 $ 72.9 $ 301.4 Interest expense, net (59.5) — (59.5) (33.4) (92.9) Other income, net 12.1 (10.0) 2.1 — 2.1 Income taxes (33.7) (5.9) (39.6) (9.1) (48.7) Net income attributable to noncontrolling interests (0.2) — (0.2) — (0.2) Net income from continuing operations attributable to Avient shareholders $ 75.5 $ 55.8 $ 131.3 $ 30.4 $ 161.7 Weighted average diluted shares 77.7 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 93.0 Pro forma adjusted EPS $ 1.74 Reconciliation of Pro Forma Adjusted EBITDA from continuing operations Operating income and other income, net $ 168.9 $ — $ 61.7 $ 230.6 $ 72.9 $ — $ 303.5 Depreciation and amortization 78.1 — 78.1 60.3 138.4 EBITDA from continuing operations $ 247.0 $ 61.7 $ 308.7 $ 133.2 $ 441.9 (3) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 5 Avient IR Presentation - June 2021.pdf Avient IR Presentation - June 2021 w Non GAAP Recs.pdf Avient IR Presentation - May 2021 w Non-GAAP Recs.pdf AVNT First Quarter 2021 Earnings Presentation.pdf AVNT First Quarter 2021 Earnings Presentation.pdf AVNT First Quarter 2021 Earnings Presentation.pdf AVNT First Quarter 2021 Earnings Presentation.pdf 4.29 127pm Q1 21 IR Deck Version non-GAAP Recs (002).pdf

Post-consumer recycled content as percentage of total plastic packaging volume, by weight ENABLING THE USE OF RECYCLED CONTENT T O P 5 G A P S T H A T W E A R E A D D R E S S I N G 2) DECONTAMINATION1) COLOR MANAGEMENT 3) MAINTAINING MECHANICAL PROPERTIES 4) MONO-MATERIAL CONSTRUCTION 5) CONSISTENT RECYCLED MATERIAL QUALITY 15 G U I D I N G B R A N D S T O W H A T I S P O S S I B L E CASE STUDY WITH BRAND OWNER Recycled ResinVirgin Resin 16 SUSTAINABILITY FOR A BETTER TOMORROW • Revenue from sustainable solutions expected to grow 18% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • 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** 2021E $405M $455M $340M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $930M Q3 2020 $925 $74 Sustainable Solutions 35 19% 14 Healthcare 51 44% 10 Composites 13 39% 6 Growth in Asia / LATAM 14 11% 3 Other 177 39% 16 Sub-total $1,215 31% $123 Supply Chain Disruption Costs (19) COVID Response Applications (5) (3) FX Impact 10 2 Synergies 12 Incentives, Travel, Other Employee Costs (16) Q3 2021 $1,220 32% $99 Q3 2021 SALES AND OPERATING INCOME 18 Sales Growth Rate Operating Income$ millions 19 Q3 2020 Q3 2021 (1) Financial information is presented on a constant currency basis (44% of total revenue) (56% of total revenue) Q3 END MARKET SALES PERFORMANCE +20% +31% +40% +24% +46% +40% +14% +33% Energy Telecom Building & Transportation Industrial Healthcare Packaging Consumer Q3 YEAR-OVER-YEAR EBITDA BRIDGE 20 • Demand driven by growth in sustainable solutions, healthcare and consumer applications • Price increases more than offsets raw material and supply chain impacts • Synergy capture on pace to achieve $50M in annual savings in 2021 Q3 2020 $ 111 Demand 29 EBITDA$ millions CAI: Price / Mix 51 Inflation (37) SEM: Price / Mix 25 Inflation (22) Distribution: Price / Mix 108 Inflation (103) Net Price Benefit 22 Supply Chain Disruption Costs (19) COVID Response Applications (3) Synergies 12 Incentives, FX, Other (16) Q3 2021 $ 136 21 • Price increases have more than covered raw material and freight inflation impacts of $300M year- to-date compared to 2020 • Demand impact driven by Q3 seasonality for the business Q2 TO Q3 SEQUENTIAL EBITDA BRIDGE Q2 2021 $ 159 CAI: Price / Mix 17 Inflation (8) SEM: Price / Mix 6 Inflation (5) Distribution: Price / Mix 35 Inflation (35) Net Price Benefit 10 Supply Chain Disruption Costs (4) Demand / Seasonality (35) Other 6 Q3 2021 $ 136 EBITDA$ millions FU LL Y EA R 2021 O U T LO O K $308 $430 $1.93 $3.00 FULL YEAR GROWTH PROJECTIONS 23 Sales Adjusted Operating Income $3,783 $4,750 + 26% + 40% + 55% (1) Financial information is pro forma to include a full year of Clariant Color acquisition (1)(1)(1) $1.74 $1.93 $3.00 $442 $457 $580 FULL YEAR 2019 – 2021 GROWTH 24 Sales Adjusted EBITDA $3,981 $3,783 $4,750 + 19% (1) Financial information is pro forma to include a full year of Clariant Color acquisition (1) (1) (1)(1) + 31% + 72% (1) (1) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.0 11 12 13 14 15 16 17 18 19 20 21 40% 99% YTD 5 - YR 10 - YR 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 0.95 11 12 13 14 15 16 17 18 19 20 21 22 2.1x Q4 NET LEVERAGE ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$450MM PAID OVER LAST 11 YEARS CREATING VALUE FOR SHAREHOLDERS Share Performance Dividends Share Repurchases Deleveraging 3.5x 2.1x 2019PF 2021E Growing Dividend Cumulative Buybacks Net Leverage $B n $ p r sh ar Total Shareholder Return ~$4Bn MARKET CAP INCREASE OVER LAST 10 YEARS (1) Share performance includes reinvested dividends and is as of 10.25.2021 (2) Financial information is pro forma to include a full year of Clariant Color acquisition (2) 494% SUSTAINABILITY REPORT Continuous ESG Improvement 26 • Updated 2030 Sustainability Goals • Further disclosure on key Environmental, Social, and Governance impacts • Joined U.N. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 SUSTAINABILITY TARGETS 27 Sustainalytics 2021 ESG Risk Ranking RANK (1st = lowest risk) PERCENTILE (1st – lowest risk) Chemicals INDUSTRY 75/449 17th Specialty Chemicals SUBINDUSTRY 21/124 17th AVIENT ESG RATINGS ISS November 2021 ESG Scores SCORE (1 = Best, 10 = Worst) Environmental 2 Social 1 Governance 4 28 2021 AVIENT INVESTOR DAY 29 • Investor Day to be held December 9, 2021 in New York, NY • The company will be doing a deep dive into its key long- term growth drivers with a particular focus on sustainable solutions Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites / 5G 10% Growth in Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% • Senior leadership team will also provide further details on the Clariant Color integration, as well as capital allocation priorities PEER COMPARISONS 30 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

DISCLAIMER Avient Corporation 3 Avient Corporation 4 Welcome Chairman, President, and Chief Executive Officer INTRODUCTION Sustainability for a Better Tomorrow Senior Vice President and Chief Financial Officer Avient Corporation 5 WE ARE A FORMULATOR CUSTOM FORMULATION Avient Corporation 6 Avient Corporation 7 WE ARE INNOVATORS 2,500+ ACTIVE PATENT FILINGS WORLDWIDE 1,100+ RESEARCH AND DEVELOPMENT ASSOCIATES >85% Stage-gate technology projects enable sustainable solutions INDIA INNOVATION CENTER 33% 2022 VITALITY INDEX 140+ MATERIAL SCIENCE PhD ASSOCIATES Avient Corporation 8 3% 3% 5% Avient Specialty Formulators Other Specialty / Chemical Companies CAPEX / Revenue 2023E Global footprint enables greater flexibility to exceed needs of customers and deliver localized technical and formulation expertise 9 36 24 Manufacturing Locations by Region WE ARE ASSET LIGHT Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA Avient Corporation 9 Asset-light flexibility enables more nimble manufacturing capabilities and lower overhead Periods of economic weakness have driven higher levels of cash generation due to working capital improvement PROVEN TRACK RECORD OF HIGH FREE CASH FLOW CONVERSION 80% 80% 81% 84% 83% 79% 50% 70% 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023E 150 200 250 300 350 400 Fr ee C as h Fl ow C ve rs io Fr ee C as h Fl ow FCF $ AVNT FCF Conversion % S&P FCF Conversion % 2 Recent Divestitures - Combined $1.7B in Proceeds PORTFOLIO EVOLUTION Avient Corporation 10 Combined $3.6B Investment in Acquisitions Since 2016 Color Business Distribution 2016 2022 PORTFOLIO TRANSFORMATION 46% 87% 0% 20% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT DA Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications Avient Corporation 11 END MARKET TRANSFORMATION Defense Avient Corporation 12 8% 23% 4% 2006 2023E Other Industri es 22% 56% 14% 43% 9% 2006 2023E Reduced Exposure to Cyclical End Markets End Market Diversification Transportation Building & Construction 57% Defense IMPROVING PROFITABILITY AND EXPANDING MARGINS Avient Corporation 13 Adj. Plastics Pact Post-Consumer Recycle (PCR) Color Predictive Tool Innovation Award, Winner: Product Technology Innovation, Winner: Plastics Recycling Awards Europe 2023 Additive for Enhanced Recycling Innovation Award, Finalist: Product Technology Innovation, Finalist: Plastics Recycling Awards Europe 2023 Service Innovation Enables Quality Recycle Product Innovation Enables PCR Claims + Low CO2 Product Innovation Protects Quality Recycle …are Growing at Twice the Rate as Conventional ProductsSustainably-Branded Products… Consumers Are demanding recyclability and eco- conscious products Governments Are mandating changes through legislation, taxes, and regional accords STAKEHOLDER INFLUENCE DRIVES DEMAND For Sustainable Products From Sustainable Companies Brand Owners Have committed to ambitious goals to achieve sustainability metrics Avient Corporation 77 Avient Corporation 78 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) 2022 2030 Medical Plastics Market Size (in $Billions) 12% CAGR 3% CAGR Recycled Virgin Growing Demand for Recycled Content Avient Sustainable Solutions 11% CAGR 8% CAGR Sources: McKinsey, Bloomberg, Grand View Research Avient Corporation 79 Increasing the use of recycled content Reducing weight to lower fuel consumption 2022 SALESDESCRIPTION $340M $310M $525M OUTCOMES Enabling customers to advance the circular economy Shrinking carbon footprint and decreasing emissions Making our planet a better place for all Using fewer natural resources; protecting human life $1,175MTOTAL SALES SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH AVIENT IS WELL-POSITIONED A Clean House Avient holds leading ratings on ESG matters of importance to customers, countries, and key stakeholders Leading Portfolio Our formulation expertise and materials are meeting the unique sustainability needs of our customers around the world in endless applications 8-12% Long-Term Growth RateAvient’s Sustainable Solutions Investing in Innovation 85% of our opportunity funnel is directed at sustainable solutions addressing unmet customer needs Avient Corporation 80 Avient Corporation 81 ADJUSTED EBITDA MARGIN EXPANSION • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 17.3% 20% 20.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $19 million raised since 2007 Diversity & Inclusion PEOPLE AND CULTURE Avient Corporation 82 Avient Corporation 83 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture LONG-TERM OBJECTIVES Avient Corporation 84 Wrap Up and Q + A Chairman, President, and Chief Executive Officer Avient Corporation 85 Investor Deck_9_19_23 v4_WEBSITE_GAAP.pdf 2023 SR Non-GAAP Rec v3

We believe you will find our programs make us an industry leader in these areas.

Defense 6% END MARKET TRANSFORMATION TO LESS CYCLICAL INDUSTRIES ( W IT H DY N E E MA, E X .

This family of polypropylene- and polyethylene- based products is an ideal performance driven alternative to highly engineered polymers across a variety of industries.

$3.2B $526M 80+ 100+ 2011 63% 2024 sales by business segment Specialty Engineered Materials SEM Color, Additives & Inks CAI 2024 sales by end market 41% 35% 18% 2024 sales by region US, Canada LATAM EMEA PACKAGING 23% CONSUMER INDUSTRIAL TRANSPORTATION BUILDING & CONSTRUCTION HEALTHCARE DEFENSE ENERGY TELECOM 3% 2024 SALES 2024 ADJ.

subject= 4 Red flags to watch out for include: • The third party is located or doing business in a country with high levels of corruption • A customer, supplier, or third party • Objects to contractual representations regarding compliance with ABAC Laws • Seeks a contract limiting competition • Divides a purchase into a group of smaller purchases, to avoid approvals required by government or Avient management • Is owned or managed by a government official or someone closely related to an official • Asks for off-book or cash adjustments in price • Is unwilling to provide details necessary for Avient to perform due diligence • A supplier or other third party • Requests payment to a personal or offshore bank account • Lacks experience with product, field, industry, or qualified staff • Objects to a detailed statement of work Accounting and Record Keeping Requirements Under most ABAC Laws, Avient and its affiliates must keep accurate and detailed books and records and maintain an adequate system of internal controls.

Tanda bahaya yang perlu diwaspadai meliputi: • Pihak ketiga berada atau menjalankan bisnis di negara dengan tingkat korupsi yang tinggi • Pelanggan, pemasok, atau pihak ketiga • Menolak pernyataan kontrak terkait kepatuhan terhadap Undang-undang ABAC • Mengupayakan kontrak yang membatasi persaingan • Membagi pembelian dalam kelompok pembelian yang lebih kecil guna menghindari persetujuan yang diwajibkan oleh pemerintah atau manajemen Avient • Dimiliki atau dikelola oleh pejabat pemerintah atau pihak yang berhubungan erat dengan pejabat • Meminta penyesuaian harga di luar pembukuan atau uang tunai • Tidak bersedia memberikan perincian yang diperlukan kepada Avient untuk melakukan uji tuntas • Pemasok atau pihak ketiga lainnya • Meminta pembayaran ke rekening bank pribadi atau luar negeri • Kurang berpengalaman dengan produk, lapangan, industri, atau staf yang memenuhi kualifikasi • Menolak memberikan pernyataan kerja terperinci Persyaratan Akuntansi dan Pencatatan Berdasarkan sebagian besar Undang-undang ABAC, Avient dan afiliasinya harus menyimpan pembukuan serta catatan yang akurat dan terperinci serta memelihara sistem pengawasan internal yang memadai.

We believe you will find our programs make us an industry leader in these areas.