Avient Corporation 1 JEFFERIES VIRTUAL INDUSTRIALS CONFERENCE A U G U S T 2 0 2 0 Avient Corporation 2 FORWARD LOOKING STATEMENTS • • • • • • • • • • • • • • • • • • • • Avient Corporation 3 USE OF NON-GAAP MEASURES • • • Avient Corporation 4 UPDATE ON THE COVID-19 PANDEMIC • • • • Avient Corporation 5 2019 Transportation Consumer Discretionary Healthcare Packaging All Other Industries Cost Containment FX 2020 $64.3 18% 18% 9% 6% 16% 2% $46.9 20% • • • • • • SECOND QUARTER 2020 IN REVIEW Consumer Discretionary Avient Corporation 6 CLARIANT MASTERBATCH STRATEGIC RATIONALE Avient Corporation 7 FIT W I T H FOUR PILLAR S T R A T E G Y Specialization • • • Globalization • • Operational Excellence • • • Commercial Excellence • • People Avient Corporation 8 5% 2006 2019E PF* 4% 12% 10% 18% 8% 20% 2006 2019E PF* Healthcare Consumer Packaging 38% * 2019E Pro Forma for PP&S Divestiture and Clariant Masterbatch business Percentage of Total Revenue E N D M A R K E T T R A N S F O R M A T I O N Building & Construction High Growth End Markets 50% 22% Avient Corporation 9 Wire & Cable 11% Industrial 10% Electrical & Electronic 7% Healthcare 4% Packaging 8% Consumer 10% Transportation 12% Building & Construction 38% Healthcare 12% Packaging 20% Consumer 18%Transportation 12% Building & Constrution 5% Wire & Cable 9% Industrial 11% Electrial & Electronic 4% Appliance 2% Textiles 7% 2006 Pro Forma(1) Net Sales by End Market E N D M A R K E T T R A N S F O R M A T I O N Avient Corporation 10 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 2006 - 2013 2013 – 2019 PEOPLE PROD UC TS PLANET PER FOR M A NC E •• •• •• Avient Corporation 11 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 46% 66% 0% 20% 40% 60% 80% 100% 2005 2010 2015 Pro Forma % o f A d ju s te d E B IT D A ( 1) JVs Performance Products & Solutions Distribution Specialty 7% 87% (2) Avient Corporation 12 T H E N E W A V I E N T : A S P E C I A L T Y G R O W T H C O M P A N Y     Transaction expected to add $0.85 to pro forma adjusted EPS Avient Corporation 13 SUSTAINABILITY AT AVIENT P E O P L E , P R O D U C T S , P L A N E T , P E R F O R M A N C E Avient Corporation 13 Avient Corporation 14 V I S I O N To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Excellence Commercial Excellence Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and sustainable solutions Avient Corporation 15 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 0.56 0.14 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 YTD S A F E T Y F I R S T Injuries per 100 Workers Spartech Acquisition Avient Corporation 16 G R E A T P L A C E T O W O R K Avient Corporation 17 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 • • • • • • • • • • • • 2006 - 2013 2013 – 20192000-2005 2006 - 2013 • • 2020 and Beyond Avient Corporation 18 A V I E N T 2 0 1 9 R E V E N U E | $ 2 . 9 B I L L I O N Segment End Market Geography Healthcare 15% Industrial 14% Consumer 14% Packaging 13% Transportation 13% Wire & Cable 11% Building & Construction 6% Electrical & Electronics 6% Textiles 5% Appliance 3% Color Additives & Inks 34% Distribution 41% Specialty Engineered Materials 25% United States 54% Europe 19% Asia 11% Latin America 11% Canada 5% Avient Corporation 19 Operating Income % of Sales 2006 2019 Color, Additives & Inks 1.7% 14.7% Specialty Engineered Materials 1.1% 11.6% 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 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 2019 $1.69 $1.51 Avient Corporation 20 531 710 1,032 130 164 207 504 663 871 2014 2018 Pro Forma R&D / Technical Marketing Sales + 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 Revenue in Billions Total + 10% Organic + 7%+ 45% + 26% + 31% $4.0 $3.2 (2) (1) (1) $2.9 $2.9 $3.5 2015 2016 2017 2018 Pro Forma Total + 9% Organic + 5% Pro Forma(2) Avient Corporation 21 P R I O R A C Q U I S I T I O N S H I S T O R Y Commercial Resources(1) Operating Income ($ in millions) Operating Margins 256 350 At Acquisition 2019 $36 $100 At Acquisition 2019 9% 19% At Acquisition 2019 Established Acquisitions (> 7 years) + 37% + 176% + 1000 bps Avient Corporation 22 A L I G N I N G W I T H T R E N D S F O R G R O W T H 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 E C O N S U M E R Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection Avient Corporation 23 I N N O V A T I O N Customization 55% M&A 30% Innovation Pipeline 15% Innovation comes from Research & Development Spend Vitality Index 12% 37% 2006 2019 $20 $51 2006 2019 Avient Corporation 24 R E V E N U E F R O M S U S T A I N A B L E S O L U T I O N S $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Avient Corporation 25 SEGMENT HIGHLIGHTS I N N O V A T I N G W I T H A V I E N T Avient Corporation 25 Avient Corporation 26 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 Solid Colorants Performance Additives Screen Printing Inks Liquid Colorants Packaging 31% Industrial 14% Textiles 13% Wire & Cable 10% Building & Construction 9% Consumer 8% Transportation 7% Healthcare 5% Appliances 2% Electrical & Electronics 1% Avient Corporation 26 Avient Corporation 27 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 9 R E V E N U E | O V E R $ 1 B I L L I O N Europe 34% United States 44% Asia 15% Canada 1% Mexico 3% South America 3% $4 $25 $104 $147 2005 2009 2013 2019 0.9% 5.5% 12.2% 14.7% Avient Corporation 27 Avient Corporation 28 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 Engineered Formulations Advanced Composites Thermoplastic Elastomers Wire & Cable* 28% Consumer 19% Electrical & Electronics 12% Healthcare 9% Industrial 8% Packaging 6% Appliance 2% Building & Construction 2% Transportation 14% Avient Corporation 28 Avient Corporation 29 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 2 0 1 9 R E V E N U E | $ 7 5 0 M I L L I O N Europe 27% United States 54% Asia 17% Canada 2% $21 $57 $87 2005 2009 2013 2019 0.1% 5.1% 9.3% 11.6% Avient Corporation 29 Avient Corporation 30 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 Healthcare 28% Industrial 19% Transportation 18% Consumer 17% Appliance 6% Electrical & Electronics 5% Building & Construction 4% Packaging 2% Wire & Cable 1% Operating Income & Margin2019 Revenue | $1.2 Billion $25 $63 $75 2005 2009 2013 2019 $20 2.9% 4.0% 5.9% 6.3% Avient Corporation 30 http://www.polyone.com/Pages/VariationRoot.aspx Avient Corporation 31 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 Avient Corporation 31 Avient Corporation 32 Avient Corporation 33 Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** Q1 2019*** 2019 Q1 2020 Net income from continuing operations attributable to PolyOne common shareholders Joint venture equity earnings, after tax Special items, before tax (1) Special items, tax adjustments (1) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 22.4 $ 75.5 $ 33.1 (19.0) (14.7) (3.7) — — — — — — — — — — — (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 12.2 61.7 9.6 (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (1.2) (5.9) (1.0) $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 33.4 $ 131.3 $ 41.7 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 78.2 77.7 86.7 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 0.43 $ 1.69 $ 0.48 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. ** Pro forma for sale of Designed Structures and Solutions segment (DSS). *** Pro forma for sale of Performance Products and Solutions segment (PP&S). Adjusted EPS attributable to Avient common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** 2019 Q2 2020 Net income from continuing operations attributable to Avient common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 75.5 $ 23.0 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 61.7 2.4 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (5.9) 0.2 Adjusted net income from continuing operations attributable to Avient common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 131.3 $ 25.6 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 77.7 91.8 Adjusted EPS attributable to Avient common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 1.69 $ 0.28 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. ** Pro forma for sale of Designed Structures and Solutions segment (DSS). *** Pro forma for sale of Performance Products and Solutions segment (PP&S).

Comparisons to prior year full year financial results herein are presented on a pro forma basis such that the prior periods include the business results of Clariant Color for that prior period. Refer to Attachment 7 Reconciliation of Non-GAAP Financial Measures for details regarding adjustments to previously reported results to arrive to the pro forma financial metrics. Reconciliation of Pro Forma Adjusted Earnings per Share: Nine Months Ended September 30, 2020 Year Ended December 31, 2020 Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 132.0 Special items, after tax 42.0 24.8 Adjusted net income from continuing operations excluding special items 99.8 156.8 Clariant MB pro forma adjustments to net income from continuing operations(2) 20.7 20.7 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 120.5 $ 177.5 Weighted average diluted shares 90.7 90.6 Pro forma impact to diluted shares from January 2020 equity offering(2) 2.9 1.5 Pro forma weighted average diluted shares 93.6 92.1 Adjusted EPS - excluding special items pro forma for Clariant MB acquisition $ 1.29 $ 1.93 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 15 Nine Months Ended September 30, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share: Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(2) Pro Forma Adjusted Avient Sales $ 2,245.1 $ — $ 2,245.1 $ 540.5 $ 2,785.6 Operating income $ 124.3 $ 59.1 $ 183.4 $ 45.0 $ 228.4 Interest expense, net (55.3) — (55.3) (18.1) (73.4) Pension settlement gain and mark-to-market adjustment — (6.9) (6.9) — (6.9) Other income, net 12.6 0.3 12.9 — 12.9 Income taxes (22.5) (10.5) (33.0) (6.2) (39.2) Net income attributable to noncontrolling interests (1.3) — (1.3) — (1.3) Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 42.0 $ 99.8 $ 20.7 $ 120.5 Weighted average diluted shares 90.7 Impact to diluted shares from January 2020 equity offering 2.9 Pro forma weighted average diluted shares 93.6 Pro forma adjusted EPS $ 1.29 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 16 Reconciliation of EBITDA by Segment Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 123.3 Specialty Engineered Materials 31.7 24.7 103.2 64.0 Distribution 23.8 17.5 71.5 51.5 Corporate and eliminations (43.6) (59.2) (109.4) (114.5) Operating income $ 78.7 $ 33.5 $ 307.2 $ 124.3 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 12.6 Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 48.0 Specialty Engineered Materials 7.9 7.5 23.8 22.7 Distribution 0.2 0.2 0.6 0.4 Corporate and eliminations 2.1 2.5 4.1 6.2 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 77.3 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 171.3 Specialty Engineered Materials 39.6 32.2 127.0 86.7 Distribution 24.0 17.7 72.1 51.9 Corporate and eliminations (41.5) (56.7) (105.3) (108.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.5 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 16.7 % Distribution 5.5 % 6.4 % 6.0 % 6.4 % 17 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Nine Months Ended September 30, 2020 Sales: Color, Additives and Inks $ 977.1 Clariant MB pro forma adjustments(2) 540.5 Pro forma sales $ 1,517.6 Operating income: Color, Additives and Inks $ 123.3 Clariant MB pro forma adjustments(2) 45.0 Pro forma operating income $ 168.3 Depreciation & amortization: Color, Additives and Inks $ 48.0 Clariant MB pro forma adjustments(2) 30.1 Pro forma depreciation & amortization $ 78.1 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 171.3 Clariant MB pro forma adjustments(2) 75.1 Pro forma EBITDA $ 246.4 Pro forma EBITDA as a % of Sales 16.2 % (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA: 2021 2020 2021 2020 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 201.7 $ 59.1 Income tax expense 8.5 2.7 51.8 22.5 Interest expense 19.0 29.7 57.8 55.3 Depreciation and amortization from continuing operations 36.8 36.5 107.7 77.3 EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 Special items, before tax 19.9 50.0 36.5 62.0 Interest expense included in special items — (9.6) — (10.1) Depreciation and amortization included in special items (0.9) (1.3) (0.1) (2.5) Adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 263.6 Clariant MB pro forma adjustments(2) — — — 75.1 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 338.7 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition NEWS RELEASE Attachment 1

Full Year Comparisons Pro Forma for Acquisition of Clariant’s Color Business The company acquired Clariant’s color (“Clariant Color”) business on July 1, 2020 (the “Acquisition Date”). Refer to Attachment 7 Reconciliation of Non-GAAP Financial Measures for details regarding adjustments to previously reported results to arrive to the pro forma financial metrics. Reconciliation of Pro Forma Adjusted Earnings per Share: Year Ended December 31, 2020 Net income from continuing operations attributable to Avient shareholders $ 132.0 Special items, after tax 24.8 Adjusted net income from continuing operations excluding special items 156.8 Clariant Color pro forma adjustments to net income from continuing operations(2) 20.7 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 177.5 Weighted average diluted shares 90.6 Pro forma impact to diluted shares from January 2020 equity offering(2) 1.5 Pro forma weighted average diluted shares 92.1 Adjusted EPS - excluding special items pro forma for Clariant Color acquisition $ 1.93 Year Ended December 31, 2020 Sales $ 3,242.1 Clariant Color pro forma adjustment to sales(2) 540.4 Pro forma sales $ 3,782.5 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 15 Reconciliation of Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA) by Segment Three Months Ended December 31, Year Ended December 31, 2021 2020 2021 2020 Operating income: Color, Additives and Inks $ 61.2 $ 57.5 $ 303.1 $ 180.8 Specialty Engineered Materials 28.8 30.4 132.0 94.4 Distribution 21.7 18.0 93.2 69.5 Corporate and eliminations (37.7) (40.9) (147.1) (155.4) Operating income $ 74.0 $ 65.0 $ 381.2 $ 189.3 Items below OI in Corporate: Other income, net $ (5.4) $ 11.7 $ (1.3) $ 24.3 Depreciation & amortization: Color, Additives and Inks $ 26.4 $ 27.3 $ 105.7 $ 75.1 Specialty Engineered Materials 8.0 7.4 31.7 30.0 Distribution 0.2 0.3 0.8 0.7 Corporate and eliminations 3.6 2.8 7.7 9.3 Depreciation & Amortization $ 38.2 $ 37.8 $ 145.9 $ 115.1 EBITDA: Color, Additives and Inks $ 87.6 $ 84.8 $ 408.8 $ 255.9 Specialty Engineered Materials 36.8 37.8 163.7 124.4 Distribution 21.9 18.3 94.0 70.2 Corporate and eliminations (39.5) (26.4) (140.7) (121.8) EBITDA $ 106.8 $ 114.5 $ 525.8 $ 328.7 16 Reconciliation of Pro Forma Sales, Operating Income and EBITDA - Color, Additives and Inks Year Ended December 31, 2020 Sales: Color, Additives and Inks $ 1,502.9 Clariant Color pro forma adjustments(2) 540.4 Pro forma sales $ 2,043.3 Operating income: Color, Additives and Inks $ 180.8 Clariant Color pro forma adjustments(2) 45.0 Pro forma operating income $ 225.8 Depreciation & amortization: Color, Additives and Inks $ 75.1 Clariant Color pro forma adjustments(2) 30.1 Pro forma depreciation & amortization $ 105.2 EBITDA: Color, Additives and Inks $ 255.9 Clariant Color pro forma adjustments(2) 75.1 Pro forma EBITDA $ 331.0 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Three Months Ended December 31, Year Ended December 31, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA: 2021 2020 2021 2020 Net income from continuing operations – GAAP $ 28.9 $ 74.7 $ 230.6 $ 133.8 Income tax expense (benefit) 22.2 (17.3) 74.0 5.2 Interest expense 17.5 19.3 75.3 74.6 Depreciation and amortization from continuing operations 38.2 37.8 145.9 115.1 EBITDA $ 106.8 $ 114.5 $ 525.8 $ 328.7 Special items, before tax 20.6 4.2 57.1 66.2 Interest expense included in special items — — (10.1) Depreciation and amortization included in special items (1.6) (0.7) (1.7) (3.2) Adjusted EBITDA $ 125.8 $ 118.0 $ 581.2 $ 381.6 Clariant Color pro forma adjustments(2) — — — 75.1 Pro forma adjusted EBITDA $ 125.8 $ 118.0 $ 581.2 $ 456.7 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 17 Net Debt Calculation December 31, 2021 Total long-term debt, net $ 1,850.3 Unamortized discount and debt issuance cost 14.4 Short-term and current portion of long term debt 8.6 Total debt $ 1,873.3 Cash (601.2) Net debt $ 1,272.1 NEWS RELEASE Attachment 1

NYSE: AVNT), with 2020 pro forma revenues of

About Avient Avient Corporation (NYSE: AVNT), with 2020 pro forma revenues of $3.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. Three Months Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income (loss) from continuing operations attributable to Avient shareholders $ 27.8 $ 0.30 $ (17.0) $ (0.19) Special items, after tax (Attachment 3) 5.4 0.06 38.3 0.42 Amortization expense, after-tax 15.0 0.16 14.6 0.16 Adjusted net income / EPS $ 48.2 $ 0.52 $ 35.9 $ 0.39 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 $ 82.8 $ 0.90 Special items, after tax (Attachment 3) 79.3 0.86 116.2 1.26 Amortization expense, after-tax 61.5 0.67 49.0 0.53 Adjusted net income / EPS $ 216.6 $ 2.36 $ 248.0 $ 2.69 (1) Per share amounts may not recalculate from figures presented herein due to rounding 1 Three Months Ended December 31, Year Ended December 31, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA 2023 2022 2023 2022 Sales - GAAP $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Pro forma APM adjustments — — — 256.1 Pro forma adjusted sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,653.0 Net income (loss) from continuing operations – GAAP $ 27.6 $ (16.6) $ 76.3 $ 83.1 Income tax (benefit) expense (7.0) (60.8) 11.0 (19.3) Interest expense 26.8 49.4 115.3 119.8 Depreciation and amortization from continuing operations 44.2 48.6 188.8 162.5 EBITDA from continuing operations $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items, before tax 22.4 104.3 114.6 194.0 Interest expense included in special items (0.1) (16.0) (2.3) (26.0) Depreciation and amortization included in special items — (1.5) (1.9) (5.5) Adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 Pro forma adjusted EBITDA as a percent of sales 15.8 % 13.6 % 16.0 % 16.2 % * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). Three Months Ended Year Ended Reconciliation of Pro Forma Adjusted Earnings per Share December 31, 2022 Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ 82.8 Special items, after tax 38.3 116.2 Amortization expense, after-tax 14.6 49.0 Adjusted net income from continuing operations excluding special items 35.9 248.0 Pro forma adjustments* 2.5 13.6 APM pro forma amortization expense, after-tax* — 19.1 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 $ 280.7 Weighted average diluted shares 91.7 92.2 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 $ 3.04 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale.

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. Three Months Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income (loss) from continuing operations attributable to Avient shareholders $ 27.8 $ 0.30 $ (17.0) $ (0.19) Special items, after tax (Attachment 3) 5.4 0.06 38.3 0.42 Amortization expense, after-tax 15.0 0.16 14.6 0.16 Adjusted net income / EPS $ 48.2 $ 0.52 $ 35.9 $ 0.39 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 $ 82.8 $ 0.90 Special items, after tax (Attachment 3) 79.3 0.86 116.2 1.26 Amortization expense, after-tax 61.5 0.67 49.0 0.53 Adjusted net income / EPS $ 216.6 $ 2.36 $ 248.0 $ 2.69 (1) Per share amounts may not recalculate from figures presented herein due to rounding 1 Three Months Ended December 31, Year Ended December 31, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA 2023 2022 2023 2022 Sales - GAAP $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Pro forma APM adjustments — — — 256.1 Pro forma adjusted sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,653.0 Net income (loss) from continuing operations – GAAP $ 27.6 $ (16.6) $ 76.3 $ 83.1 Income tax (benefit) expense (7.0) (60.8) 11.0 (19.3) Interest expense 26.8 49.4 115.3 119.8 Depreciation and amortization from continuing operations 44.2 48.6 188.8 162.5 EBITDA from continuing operations $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items, before tax 22.4 104.3 114.6 194.0 Interest expense included in special items (0.1) (16.0) (2.3) (26.0) Depreciation and amortization included in special items — (1.5) (1.9) (5.5) Adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 Pro forma adjusted EBITDA as a percent of sales 15.8 % 13.6 % 16.0 % 16.2 % * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). Three Months Ended Year Ended Reconciliation of Pro Forma Adjusted Earnings per Share December 31, 2022 Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ 82.8 Special items, after tax 38.3 116.2 Amortization expense, after-tax 14.6 49.0 Adjusted net income from continuing operations excluding special items 35.9 248.0 Pro forma adjustments* 2.5 13.6 APM pro forma amortization expense, after-tax* — 19.1 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 $ 280.7 Weighted average diluted shares 91.7 92.2 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 $ 3.04 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. 2 Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 Other expense, net: $ 4.3 $ (28.4) $ 5.8 $ (59.7) Depreciation & amortization: Color, Additives and Inks $ 22.2 $ 25.2 $ 98.3 $ 101.3 Specialty Engineered Materials 19.8 20.3 81.5 48.7 Corporate 2.2 3.1 9.0 12.5 Depreciation & amortization $ 44.2 $ 48.6 $ 188.8 $ 162.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 84.0 $ 69.5 $ 358.2 $ 402.3 Specialty Engineered Materials 49.2 55.5 224.0 188.8 Corporate (45.9) (76.0) (196.6) (185.3) Other expense, net $ 4.3 $ (28.4) $ 5.8 $ (59.7) EBITDA $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items in EBITDA 22.3 86.8 110.4 162.5 EBITDA - excluding special items $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). 3 AVNT Q4 2023 Earnings Presentation_For Website_with Non-GAAP.pdf AVNT Q4 2023 Earnings Presentation_For Website.pdf IR Deck - AVNT-2023.12.31 (2.12.24 9PM Milestone February 12 0905 pm).pdf Attachment Non-GAAP Update.pdf

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In certain cases throughout this presentation, we have presented GAAP and non-GAAP financial measures adjusted to reflect full- year 2012 Pro forma results, including Spartech and Glasforms and excluding discontinued operations. • PolyOne’s chief operating decision makers use these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources. Use of Non-GAAP Measures Page 3 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • Steve Newlin appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • 18 consecutive quarters of double- digit adjusted EPS growth • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Established aggressive 2015 targets • Continue specialty transformation • Targeting $2.50 Adjusted EPS by 2015, nearly double 2013 EPS • Drive double digit operating income and adjusted EPS growth Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% 450.00% PolyOne S&P 500 Russell 2000 Dow Jones Chemical All time high of $39.28 April 4th, 2014 • 18 consecutive quarters of double digit EPS growth • 49% CAGR adjusted EPS expansion 2006-2013 • 2013 stock price increased 73% versus 30% growth in the S&P • More than seven fold increase in market cap: $0.5b $3.6b Strategy and Execution Drive Results Page 6 Appliance 4% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 5% Consumer 10%Packaging 16% Industrial 12% HealthCare 11% Transportation 18% Misc. 2% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 1.31 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010 2011 2012 2013 2015 Target Ad ju st ed E ar ni ng s P er S ha re 2013 Revenues: $3.8 Billion End Markets 2013 Revenues: $3.8 Billion EPS Page 7 PolyOne At A Glance United States 67% Europe 14% Canada 7% Asia 6% Latin America 6% Specialty 54% PP&S 18% Distribution 28% Mix Shift Highlights Specialty Transformation Page 8 Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 64% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 Q1 2014 2015 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 65-75% Specialty OI $5M $46M $87M $195M $60M Target 2015 Target Proof of Performance & 2015 Goals Page 9 2006 Q1 2014 2015 “Where we were” “Where we are” Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 13.8% 12 – 16% Global Specialty Engineered Materials 1.1% 11.6% 12 – 16% Designed Structures & Solutions -- 6.5% 8 – 10% Performance Products & Solutions 5.5% 7.7% 9 – 12% Distribution 2.6% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 64% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 42% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Bridge to $2.50 Adjusted EPS by 2015 2015 EPS: $2.50 2013 EPS: $1.31 Continued Gross Margin Expansion Mergers & Acquisitions Spartech Accretion Incremental share buybacks Ongoing LSS Programs (50-100 bps/yr) Accelerated Innovation & Mix Improvement Several Levers to Drive Growth Mid single digit revenue CAGR Innovation Drives Earnings Growth $20.3 $52.3 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years Page 11 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 42.0% 2006 Q1 2014 Healthcare Consumer Packaging and Additive Technology Transportation Page 12 Unique and Innovative Solutions https://www.dropbox.com/sh/dwe4t8aacvhb8ui/uD3p_bdglP/Presentation revise pics/GLS Beverage can closure XO 2.jpg https://www.dropbox.com/sh/dwe4t8aacvhb8ui/-YgkycKypw/Anti-Counterfeiting release & images/GN1979.JPG 60% 100% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2008 2014 Pension Funding** As of March 31, 2014 Debt Maturities & Pension Funding – 3/31/14 Net Debt / EBITDA* = 1.9x $48 $317 $600 $0 $100 $200 $300 $400 $500 $600 $700 $800 2015 2020 2023 Debt Maturities As of March 31, 2014 ($ millions) Coupon Rates: 7.500% 7.375% 5.250% ** includes US-qualified pension plans only *TTM 3/31/2014 Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return $0.16 $0.20 $0.24 $0.32 $0.10 $0.20 $0.30 $0.40 2011 2012 2013 2014 Annual Dividend  Expanding our sales, marketing, and technical capabilities  Investing in operational and initiatives that drive profitability growth Manufacturing realignment  Targets that expand our: • Specialty offerings • End market presence • Geographic footprint • Operating Margin  Synergy opportunities  Adjacent material solutions  Repurchased 1.4 million shares in Q1 2014  Repurchased 6.4 million shares since April 2013  13.6 million shares are available for repurchase under the current authorization Organic Growth Acquisitions Share Repurchases Dividends The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

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