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  Growing leadership position in attractive markets  Innovation, technology and service are differentiators  Capital management is a strength: Record-setting cash generation to continue for years  Expand ROIC while increasing invested capital  Proven acquisition strategy with robust pipeline  Commercial investments are fueling momentum and generating organic growth SERVICE: T H E T I M E L E S S D I F F E R E N T I A T O R PolyOne Corporation 28 T A L E N T D E V E L O P M E N T PolyOne Corporation 29 Leadership Program Participants 2012 2013 2015 47 86 2016 125 169 412 Campus Hires 2008 2011 2017 25 47 PolyOne LSS Blackbelts 2008 2011 67 247 147 2018 141 A U N I Q U E C U S T O M E R E X P E R I E N C E Industrial Design IQ DESIGN LABS PolyOne Corporation 30 Material & Color Expertise Manufacturing Expertise 3 14 Industrial designers $0 $10M $4M $80M Opportunity funnel New business revenue LSS CUSTOMER FIRST PolyOne Corporation 31 Customer Projects Enables sales growth by building more intimate customer relationships, giving us insight to customers’ needs, with a service that is not easily replicated 2 104 3 D P R I N T I N G B R I N G I N G N E W I D E A S T O L I F E PolyOne Corporation 32 Enables validation of fit and function Shortens design cycle and time to market Avoids tooling rework Drives innovation Delivers substantial customer value PolyOne Corporation 33 From concept to production 99.9% Reduction in turnaround time Traditional Timeline up to 24 weeks PolyOne ColorMatrix Select™ 6 hours Innovative system for processors and OEMs to develop colors in real time Complete system that provides customers with the freedom to match, prototype and produce color entirely within their own facility C O L O R M A T R I X S E L E C T ™ “Being able to create color and produce parts in 1 day is unheard of in this industry” -CEO, Industry Leader I N N O V A T I N G W I T H P O L Y O N E PolyOne Corporation 34 SEGMENT HIGHLIGHTS C O L O R , A D D I T I V E S & I N K S E N D M A R K E T S & S O L U T I O N S PolyOne Corporation 35 Solid Colorants Performance Screen Printing Inks Liquid Colorants 32% Textiles Wire & Cable Building & Construction 9%Consumer 7% Appliances Electrical & Electronics Operating Income & MarginRevenue by Region C O L O R , A D D I T I V E S & I N K S 2 0 1 8 R E V E N U E | O V E R $ 1 B I L L I O N $4 $25 $104 $159 0.9% 5.5% 12.2% 15.1% 8.0% 10.0% 12.0% 14.0% 16.0% 20 30 40 50 60 70 80 100 110 120 130 140 150 160 170 PolyOne Corporation 36 Europe 35% United States 45% Mexico South America S P E C I A L T Y E N G I N E E R E D M A T E R I A L S E N D M A R K E T S & S O L U T I O N S PolyOne Corporation 37 Engineered Formulations Advanced Thermoplastic Elastomers 28% 18% Electrical & Electronic Building & Construction 16% S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Revenue by Region Operating Income & Margin P R O F O R M A 2 0 1 8 R E V E N U E | $ 7 5 0 M I L L I O N * PolyOne Corporation 38 $21 $57 $72 0.1% 5.1% 9.3% 11.2% 8.0% 10.0% 12.0% 20 30 40 50 60 70 80 Europe 28% United States 46% 24% *Pro-Forma including Fiber-Line D I S T R I B U T I O N E N D M A R K E T S & S U P P L I E R S PolyOne Corporation 39 27% 23% 18% Electrical & Electronics Building & $20 $25 $63 $71 2.9% 5.9% 5.6% 1.0% 3.0% 5.0% 7.0% 15 25 35 45 55 65 75 Operating Income & Margin2018 Revenue | $1.3 Billion http://www.polyone.com/Pages/VariationRoot.aspx O V E R V I E W O F R A W M A T E R I A L P U R C H A S E S PolyOne Corporation 40 Performance Polyethylene Pigments TiO2 Styrenic Block Copolymer 7% Nylon Polypropylene Plasticizers 4% Dyestuffs Other Raw Materials 32% $900 million of raw material purchases estimated in 2019 excluding Distribution business Note: All figures exclude PolyOne Distribution business and divested PP&S business T A R G E T E N D M A R K E T S & A P P L I C A T I O N E X A M P L E S PolyOne Corporation 41 Thermally Conductive Chemical Resistant Polymer Colorants Elastomeric Grips and Handles Structural Composites Antimicrobial Technologies Anti-Counterfeiting Target End Markets… Healthcare Catheter Technologies Under-hood Components Target End Markets… Automotive Interior Structural Sound & Vibration Management Roof Systems Air Management Electronics and Cameras Lighting Exterior / Interior Trim Braces & Brackets Fasteners Seals & Flaps Target End Markets… Consumer Thermally Conductive Polymer Colorants Elastomeric Grips and Handles Structural Composite Oxygen Scavenger Laser Marking Additives Antistatic Technologies UV Light Barrier Technologies Cap & Closure Colorants Process Optimization Antioxidant Technologies Density Modified Target End Markets… Packaging  Impart weight, sound and metallic finish to caps and closures for cosmetics and spirits applications  Elevate quality and prestige perceptions among high-end consumers  Eliminate time and cost associated with secondary operations and assembly Luxury Packaging GravitechTM Density Modified Polymers  Eliminate costs by increasing pigment density  Enhance color performance without altering form and formulation  Increase design capabilities by reducing weight and layer thickness Optimize Color Usage OnColorTM Super Concentrates  Inhibit microbial growth on polymer surfaces  Enhance value or products and devices  Highly versatile concentrate with the ability to be incorporated into a wide variety of products Combat Bacteria Formation WithStandTM Antimicrobial Technology  Durable, long-lasting products stand up to the most aggressive disinfectants  Minimize environmental stress cracking and discoloration  One of the broadest medically approved polymer and colorant portfolios Medical Device Housings Chemically Resistant Engineered Polymers Color & Design Services  Greater control of color development and supply chain  Work across entire design process from concept to commercialization  Inspire creativity in the use of polymer materials, colors, and effects  Innovative brand differentiation  Faster development timelines Outdoor Applications  Leading provider of high performance specialty materials for the recreational and sports & leisure industry  Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance  ColorMatrix Fiber Colorant Solutions  Proprietary advanced liquid color formulations and equipment enable greater efficiency and productivity  Eliminates aqueous dyeing and its associated wastewater treatment  Solid Color Concentrates  Extrusion-spun fibers colored via solid masterbatch Fiber Colorants Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

All Rights Reserved 2025 28 NON-HYDROCARBON MATERIALS HYDROCARBON-BASED ~35% of the raw material basket including part of “Other raw materials” are hydrocarbon-based Raw material basket 16% 14% 9% 2% 37% 9% 5% 4% 4% Performance additives Pigments TiO2 Dyestuffs Styrenic block copolymers Polypropylene Nylon Polyethylene Other raw materials Copyright © .

Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 10.8 16.1 15.5 14.1 14.0 10.3 21.0 19.0 14.3 12.1 11.8 11.7 11.5 9.7 11 21 23 PM AV FM Avient Historic Multiple Avient Specialty Other Specialty / AP P E N DI X 30 Performance Additives 16% 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 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 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% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 BILLION US & Canada 34% 38% END MARKET REGION 33 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 BILLION US & Canada 52% 35% 34 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 35 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Hiformer™ Clearview™ Clarifiers For Polypropylene Hiformer™ NuAge™ Polypropylene Nucleating Agent OnForce™ Long Glass Fiber Reinforced Polypropylene Composites

Hiformer™ Clearview™ Clarifiers For Polypropylene

MULTIPURPOSE COLORANTS Polyethylene 1% Polypropylene 1% GP Polystyrene 1% HI Polystyrene 1–2% Acrylics (Opaque) 1% PBT Polyester 1% PET Polyester 1% Polyurethane 1–2% Polyamide (Nylon) 1% Acetal 1% SAN 1% ABS 1–3% PVC 1–3% Polycarbonate 1% Thermoplastic 1–3% Alloys & Blends 1–3% EVA 1% Filled Polymers 1–3% RECOMMENDED ADDITION RATES CONCENTRATE SELECTION Omnicolor colorants are generally selected because of their versatility where a wide range of polymers are processed and their availability for sale in small quantities.

OUR VALUATION VERSUS PEERS Avient Specialty Other 5.4 8.5 10.1 9.8 13.8 12.8 12.1 11.8 10.2 21.0 19.2 16.8 13.7 13.6 8.8 8.7 8.7 8.3 8.0 5.6 01 1) 01 6) 02 1) (T od ay ) PM PP AV VR C Historic Multiple APPENDIX Performance Additives 15% Pigments TiO2 Dyestuffs 3%Polyethylene Nylon 6% Polypropylene Other Raw Materials 30% Styrenic Block Copolymer ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 48 • Significant raw material price inflation and tight inventory continued in Q1 2022 o The average cost of hydrocarbon based materials was up 30% o The average cost of non-hydrocarbon based materials was up 20% • Additionally, we continued to experience other supply chain challenges during Q1 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% Latin America 2021 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M 15% 34% Building & 1% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILLION 32% 40% Latin America END MARKET REGION 51 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 27% Building & 2021 REVENUE | $919 MILLION END MARKET 55% REGION 52 DI S T RI BU T I O N 26% 23% Building and 80% 3% Latin America END MARKET REGION K EY SU PPL IER S 2021 REVENUE | $1 .6 BILLION 53 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 26%Healthcare 14% Building & 2% Energy (16% of sales) 32% Building & (25% of sales) 54 19% Building & US & Canada (50% of sales) 38% 33% Building & LATAM (9% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

APPENDIX Performance Additives Pigments TiO2 Dyestuffs 4%Polyethylene Nylon Polypropylene Other Raw Materials 29% Styrenic Block Copolymer ~1/3 hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 36 • Significant raw material price inflation and tight inventory continued in Q3 2021 o Average cost of hydrocarbon based materials was up 65% year-over-year and 10% sequentially o Average cost of non-hydrocarbon based materials was up 20% year-over-year and 3% sequentially • Additionally, we continued to experience other supply chain challenges during Q3 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2020 pro forma purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 51% Latin America 2021 YTD SEGMENT, END MARKET AND GEOGRAPHY 38 GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and EBITDA of $3,617M and $455M, respectively, include intercompany sales eliminations and corporate costs All charts reflect YTD financials through September 30 $1,820M $321M $691M $127M $1,206M $72M Sales Adjusted EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $455M$3,617M 34% 21% 7% Building & 9% 2% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 YTD REVENUE | $1 .8 BILL ION 31% 42% 21% Latin America END MARKET REGION 39 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 28% 11% Building & 7% 2021 YTD REVENUE | $691 MILLION END MARKET 55% 20% REGION 40 DI S TR IBU T I ON 26% 22% 20% Building and 81% Latin America END MARKET REGION K E Y S U P P L I ER S 2021 YTD REVENUE | $1 .2 BILL ION 41 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 27% Building & 2% Energy (16% of sales) 31% 17% Building & (25% of sales) 42 19% 17% Building & US & Canada (51% of sales) 13% 42% 33% 3% Building & LATAM (8% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted Operating income $ 78.7 $ 20.0 $ 98.7 Income from continuing operations before income taxes $ 61.1 $ 19.9 $ 81.0 Income tax expense - GAAP (8.5) — (8.5) Income tax impact of special items — (4.6) (4.6) Tax adjustments — (3.6) (3.6) Net income attributable to noncontrolling interests 0.3 — 0.3 Net income from continuing operations attributable to Avient shareholders $ 52.9 $ 11.7 $ 64.6 Net income / EPS $ 0.57 $ 0.13 $ 0.70 Weighted-average diluted shares 92.2 92.2 92.2 September 30, 2020 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted Operating income $ 33.5 $ 40.4 $ 73.9 Income from continuing operations before income taxes $ 5.3 $ 50.0 $ 55.3 Income tax expense - GAAP (2.7) — (2.7) Income tax impact of special items — (12.7) (12.7) Tax adjustments — 3.0 3.0 Net income attributable to noncontrolling interests (0.9) — (0.9) Net income from continuing operations attributable to Avient shareholders $ 1.7 $ 40.3 $ 42.0 Net income / EPS $ 0.02 $ 0.44 $ 0.46 Weighted-average diluted shares 91.9 91.9 91.9 Three Months Ended Three Months Nine Months Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2021 2020 June 30, 2021 September 30, 2021 2020 2019 2018 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 69.4 $ 201.7 $ 133.8 $ 75.7 $ 87.4 Income tax expense 8.5 2.7 20.4 51.8 5.2 33.7 14.4 Interest expense 19.0 29.7 19.5 57.8 74.6 59.5 62.8 Debt extinguishment cost — — — — — — 1.1 Depreciation and amortization from continuing operations 36.8 36.5 33.8 107.7 115.0 78.1 72.6 EBITDA $ 116.9 71.5 $ 143.1 $ 419.0 $ 328.6 $ 247.0 $ 238.3 Special items, before tax 19.9 50.0 14.2 36.5 66.2 61.7 59.5 Interest expense included in special items — (9.6) — — (10.1) — — Depreciation and amortization included in special items (0.9) (1.3) 1.4 (0.1) (3.2) — (3.0) Adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 381.6 $ 308.7 $ 294.8 Clariant MB pro forma adjustments(1) — — — — 75.1 133.2 141.5 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 456.7 $ 441.9 $ 436.3 (1) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Reconciliation of EBITDA by Segment Nine Months December 31, 2021 2020 2021 2020 2019 2018 Sales: Color, Additives and Inks $ 586.6 $ 493.8 $ 1,820.3 $ 1,502.9 $ 1,003.8 $ 1,046.5 Specialty Engineered Materials 233.6 174.1 690.7 708.8 745.7 645.8 Distribution 438.8 276.9 1,205.9 1,110.3 1,192.2 1,265.4 Corporate and eliminations (39.2) (20.3) (99.6) (79.9) (79.0) (76.7) Sales $ 1,219.8 $ 924.5 $ 3,617.3 $ 3,242.1 $ 2,862.7 $ 2,881.0 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 31.7 24.7 103.2 94.4 83.7 72.3 Distribution 23.8 17.5 71.5 69.5 75.4 71.5 Corporate and eliminations (43.6) (59.2) (109.4) (155.4) (149.7) (123.7) Operating income $ 78.7 $ 33.5 $ 307.2 $ 189.3 $ 156.8 $ 178.6 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 24.3 $ 12.1 $ (12.9) Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 75.1 $ 42.7 $ 44.3 Specialty Engineered Materials 7.9 7.5 23.8 30.0 29.5 23.2 Distribution 0.2 0.2 0.6 0.7 0.5 0.7 Corporate and eliminations 2.1 2.5 4.1 9.2 5.4 4.4 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 115.0 $ 78.1 $ 72.6 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 39.6 32.2 127.0 124.4 113.2 95.5 Distribution 24.0 17.7 72.1 70.2 75.9 72.2 Corporate and eliminations (41.5) (56.7) (105.3) (146.2) (144.3) (119.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 17.6 % 15.2 % 14.8 % Distribution 5.5 % 6.4 % 6.0 % 6.3 % 6.4 % 5.7 % Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Year Ended December 31, 2020 2019 2018 Sales: Color, Additives and Inks $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(1) 540.4 1,118.6 1,209.8 Pro forma sales $ 2,043.3 $ 2,122.4 $ 2,256.3 Operating income: Color, Additives and Inks $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(1) 45.0 72.9 80.3 Pro forma operating income $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(1) 30.1 60.3 61.2 Pro forma depreciation & amortization $ 105.2 $ 103.0 $ 105.5 EBITDA Color, Additives and Inks $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(1) 75.1 133.2 141.5 Pro forma EBITDA $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 16.2 % 15.2 % 15.3 % December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(1) 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 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 AVNT November Investor Meetings.pdf AVNT Q3 2021 Earnings Presentation.pdf Final 10.27 606pm Q3 21 IR Deck Version v1.pdf

APPENDIX Performance Additives Pigments TiO2 Dyestuffs 4%Polyethylene Nylon Polypropylene Other Raw Materials 29% Styrenic Block Copolymer ~1/3 hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 34 • In Q2 2021, several raw material markets experienced significant price inflation and tight inventory o Average cost of hydrocarbon based materials was up 45% year-over-year and 20% sequentially o Average cost of non-hydrocarbon based materials was up 10% year-over-year and 8% sequentially • Additionally, we experienced other supply chain challenges during Q2 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2020 pro forma purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% 26% Latin America 2021 YTD SEGMENT, END MARKET AND GEOGRAPHY 36 GEOGRAPHY REVENUESEGMENT FINANCIALS 23% Building and 9% END MARKET REVENUE (1) Total company sales and EBITDA of $2,398M and $320M, respectively, include intercompany sales eliminations and corporate costs All charts reflect YTD financials through June 30 $1,234M $228M $457M $87M $767M $48M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $320M$2,398M 14% 34% 21% Building & 9% 2% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 YTD REVENUE | $1 .2 BILL ION 31% 42% 21% Latin America END MARKET REGION 37 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 28% Building & 2021 YTD REVENUE | $457 MILLION END MARKET 54% 26% REGION 38 DI S TR IBU T I ON 27% 22% Building and 81% Latin America END MARKET REGION K E Y S U P P L I ER S 2021 YTD REVENUE | $767 MILLION 39 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 27%Healthcare Building & 2% Energy (16% of sales) 32% 13% 18% Building & (26% of sales) 40 25% 19% Building & US & Canada (50% of sales) 13% 40% 33% Building & LATAM (8% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) June 30, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted Operating income $ 108.1 $ 14.2 $ 122.3 Income from continuing operations before income taxes $ 89.8 $ 14.2 $ 104.0 Income tax expense - GAAP (20.4) — (20.4) Income tax impact of special items — (3.4) (3.4) Tax adjustments — 0.9 0.9 Net income attributable to noncontrolling interests (0.6) — (0.6) Net income from continuing operations attributable to Avient shareholders $ 68.8 $ 11.7 $ 80.5 Net income / EPS $ 0.74 $ 0.13 $ 0.87 Weighted-average diluted shares 92.4 92.4 92.4 September 30, 2020 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted Operating income $ 33.5 $ 40.4 $ 73.9 Income from continuing operations before income taxes $ 5.3 $ 50.0 $ 55.3 Income tax expense - GAAP (2.7) — (2.7) Income tax impact of special items — (12.7) (12.7) Tax adjustments — 3.0 3.0 Net income attributable to noncontrolling interests (0.9) — (0.9) Net income from continuing operations attributable to Avient shareholders $ 1.7 $ 40.3 $ 42.0 Net income / EPS $ 0.02 $ 0.44 $ 0.46 Weighted-average diluted shares 91.9 91.9 91.9 Three Months Ended Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2021 March 31, 2021 June 30, 2020 2020 2019 Net income from continuing operations – GAAP $ 69.4 $ 79.7 $ 23.4 $ 133.8 $ 75.7 Income tax expense 20.4 22.9 7.9 5.2 33.7 Interest expense 19.5 19.3 16.2 74.6 59.5 Depreciation and amortization from continuing operations 33.8 37.1 20.9 115.0 78.1 EBITDA $ 143.1 $ 159.0 $ 68.4 $ 328.6 $ 247.0 Special items, before tax 14.2 2.4 2.4 66.2 61.7 Interest expense included in special items — — (0.5) (10.1) — Depreciation and amortization included in special items 1.4 (0.5) (1.2) (3.2) — Adjusted EBITDA $ 158.7 $ 160.9 $ 69.1 $ 381.6 $ 308.7 Clariant MB pro forma adjustments(1) — — 37.0 75.1 133.2 Pro forma adjusted EBITDA $ 158.7 $ 160.9 $ 106.1 $ 456.7 $ 441.9 (1) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 1 Reconciliation of EBITDA by Segment Six Months Ended December 31, 2021 2020 2021 2020 2019 2018 Sales: Color, Additives and Inks $ 624.4 $ 226.8 $ 1,233.7 $ 483.3 $ 1,502.9 $ 1,003.8 Specialty Engineered Materials 240.6 158.8 457.1 344.1 708.8 745.7 Distribution 404.4 238.8 767.1 528.3 1,110.3 1,192.2 Corporate and eliminations (34.2) (15.3) (60.4) (35.1) (79.9) (79.0) Sales $ 1,235.2 $ 609.1 $ 2,397.5 $ 1,320.6 $ 3,242.1 $ 2,862.7 Operating income: Color, Additives and Inks $ 86.3 $ 32.3 $ 175.1 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 37.3 17.0 71.5 94.4 83.7 72.3 Distribution 23.7 14.6 47.7 69.5 75.4 71.5 Corporate and eliminations (39.2) (25.9) (65.8) (155.4) (149.7) (123.7) Operating income $ 108.1 $ 38.0 $ 228.5 $ 189.3 $ 156.8 $ 178.6 Items below OI in Corporate: Other income, net $ 1.2 $ 9.5 $ 2.7 $ 24.3 $ 12.1 $ (12.9) Depreciation & amortization: Color, Additives and Inks $ 25.3 $ 10.6 $ 52.6 $ 75.1 $ 42.7 $ 44.3 Specialty Engineered Materials 8.1 7.6 15.9 30.0 29.5 23.2 Distribution 0.2 0.1 0.4 0.7 0.5 0.7 Corporate and eliminations 0.2 2.6 2.0 9.2 5.4 4.4 Depreciation & Amortization $ 33.8 $ 20.9 $ 70.9 $ 115.0 $ 78.1 $ 72.6 EBITDA: Color, Additives and Inks $ 111.6 $ 42.9 $ 227.7 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 45.4 24.6 87.4 124.4 113.2 95.5 Distribution 23.9 14.7 48.1 70.2 75.9 72.2 Corporate and eliminations (39.0) (23.3) (63.8) (146.2) (144.3) (119.3) EBITDA $ 143.1 $ 68.4 $ 302.1 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 17.9 % 18.9 % 18.5 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 18.9 % 15.5 % 19.1 % 17.6 % 15.2 % 14.8 % Distribution 5.9 % 6.2 % 6.3 % 6.3 % 6.4 % 5.7 % 2 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Three Months Ended June 30, Six Months Ended Year Ended December 31, 2021 2020 2021 2020 2019 2018 Sales: Color, Additives and Inks $ 624.4 $ 226.8 $ 1,233.7 $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(1) — 261.1 — 540.4 1,118.6 1,209.8 Pro forma sales $ 624.4 $ 487.9 $ 1,233.7 $ 2,043.3 $ 2,122.4 $ 2,256.3 Operating income: Color, Additives and Inks $ 86.3 $ 32.3 $ 175.1 $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(1) — 22.0 — 45.0 72.9 80.3 Pro forma operating income $ 86.3 $ 54.3 $ 175.1 $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 25.3 $ 10.6 $ 52.6 $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(1) — 15.0 — 30.1 60.3 61.2 Pro forma depreciation & amortization $ 25.3 $ 25.6 $ 52.6 $ 105.2 $ 103.0 $ 105.5 EBITDA Color, Additives and Inks $ 111.6 $ 42.9 $ 227.7 $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(1) — 37.0 — 75.1 133.2 141.5 Pro forma EBITDA $ 111.6 $ 79.9 $ 227.7 $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 17.9 % 16.4 % 18.5 % 16.2 % 15.2 % 15.3 % Three Months Ended June 30, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma 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 (6.6) 2.9 — 2.9 Income taxes (7.9) 0.2 (7.7) (3.8) (11.5) Net income attributable to noncontrolling interests (0.4) — (0.4) — (0.4) Net income from continuing operations attributable to Avient shareholders $ 23.0 $ 2.6 $ 25.6 $ 12.9 $ 38.5 Weighted average diluted shares 91.8 Pro forma adjusted EPS $ 0.42 3 December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma 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 December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma 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 4 AVNT Seaport Conference Presentation.pdf AVNT Q2 2021 Earnings Presentation - Website.pdf AVNT Q2 2021 Earnings Presentation - Website.pdf Final - 7.19 1158am Q2 21 IR Deck Version v2

Polypropylene (PP) carriers are recommended for the harder SEBS formulations