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?

ISSUE AVIENT SOLUTION WHAT IT IS WHAT IT DOES Bottle quality and strength; energy usage ColorMatrix™ SmartHeat RHC Process aid, approved by Association of Plastics Recyclers (APR), which helps to reduce carbon emissions and improve the quality and performance of rPET, allowing for higher levels of rPET to be used. Solutions for rPET Converters ISSUE AVIENT SOLUTION WHAT IT IS WHAT IT DOES Color consistency, yellowing ColorMatrix™ SmartHeat RHC Tone Recycle-friendly toner containing APR approved SmartHeat RHC process aid Corrects the natural yellowing of PET through the recycle process while also reducing yellowing at root cause.

What is the normal throughput? What is the range of liquid addition rate? What is the length of production runs?

What is the range of throughput? What is the normal liquid addition rate? What is the length of production runs?

Kunkle 48 Senior Vice President, General Counsel and Secretary M. As a percent of sales, cost of sales decreased from 81.5% in 2014 to 79.8% in 2015. The Base Rate is a fluctuating rate equal to the greater of (i) the Federal Funds Rate plus one-half percent, (ii) the prevailing LIBOR Rate plus one percent, and (iii) the prevailing Prime Rate.

Late payments will bear interest at the maximum percent permitted by applicable law. Buyer assumes all risks and liabilities (i) arising out of unloading, discharge, storage, handling and use of the Product, or (ii) arising out of compliance or non- compliance with federal, state, provincial, or local laws and regulations governing or controlling such activity. Buyer shall indemnify, defend and save Seller harmless against any and all liability for Buyer Indemnity Costs arising out of or in any way connected with Buyer’s failure to disseminate such information.

Specific Gravity Color Index Heat Stability (F) Light- fastness Carrier White HC Plus-35000 Titanium Dioxide 60 1.78 White 6 Above 400° I/O LSR HC Plus-35100 Titanium Dioxide 75 2.31 White 6 Above 400° I/O HCR Yellow HC Plus-35011 Benzimidazolone Yellow 10 1.01 Yellow 180 350°–400° I/O (MASS) LSR HC Plus-35111 Benzimidazolone Yellow 24 1.49 Yellow 180 350°–400° I/O (MASS) HCR Orange HC Plus-35020 Monoazo Orange 10 1.02 Orange 64 350°–400° I/O LSR HC Plus-35120 Monoazo Orange 25 1.19 Orange 64 350°–400° I/O HCR Red HC Plus-35032 Red Iron Oxide VYS 50 1.60 Red 101 Above 400° I/O LSR HC Plus-35132 Red Iron Oxide VYS 70 2.17 Red 101 Above 400° I/O HCR HC Plus-35031 Special Azoic 15 1.03 Red 187 350°–400° I/O LSR HC Plus-35131 Special Azoic 33 1.33 Red 187 350°–400° I/O HCR Blue HC Plus-35040 3 Phthalocyanine Blue GS 25 1.07 Blue 15 Above 400° I/O LSR HC Plus-35140 3 Phthalocyanine Blue GS 40 1.42 Blue 15 Above 400° I/O HCR HC Plus-35041 Ultramarine Blue 45 1.32 Blue 29 Above 400° I/O LSR HC Plus-35141 Ultramarine Blue 60 1.51 Blue 29 Above 400° I/O HCR Green HC Plus-35050 Phthalocyanine Green 25 1.13 Green 7 Above 400° I/O LSR HC Plus-35150 Phthalocyanine Green 40 1.71 Green 7 Above 400° I/O HCR Violet HC Plus-35033 Quinacridone Red 20 1.04 Violet 19 Above 400° I/O LSR HC Plus-35130 Quinacridone Red 40 1.40 Violet 19 Above 400° I/O HCR Brown HC Plus-35070 Yellow Inorganic - Cr/Sb/Ti Oxide 30 1.26 Brown 24 Above 400° I/O LSR HC Plus-35170 Yellow Inorganic - Cr/Sb/Ti Oxide 60 1.79 Brown 24 Above 400° I/O HCR Black HC Plus-35080 Carbon Black 12 1.03 Black 7 Above 400° I/O LSR HC Plus-35180 Carbon Black 30 1.14 Black 7 Above 400° I/O HCR Copyright © 2024, Avient Corporation.

Specific Gravity Color Index Heat Stability (F) Light- fastness Carrier White HC Plus-35000 Titanium Dioxide 60 1.78 White 6 Above 400° I/O LSR HC Plus-35100 Titanium Dioxide 75 2.31 White 6 Above 400° I/O HCR Yellow HC Plus-35011 Benzimidazolone Yellow 10 1.01 Yellow 180 350°–400° I/O (MASS) LSR HC Plus-35111 Benzimidazolone Yellow 24 1.49 Yellow 180 350°–400° I/O (MASS) HCR Orange HC Plus-35020 Monoazo Orange 10 1.02 Orange 64 350°–400° I/O LSR HC Plus-35120 Monoazo Orange 25 1.19 Orange 64 350°–400° I/O HCR Red HC Plus-35032 Red Iron Oxide VYS 50 1.60 Red 101 Above 400° I/O LSR HC Plus-35132 Red Iron Oxide VYS 70 2.17 Red 101 Above 400° I/O HCR HC Plus-35031 Special Azoic 15 1.03 Red 187 350°–400° I/O LSR HC Plus-35131 Special Azoic 33 1.33 Red 187 350°–400° I/O HCR Blue HC Plus-35040 3 Phthalocyanine Blue GS 25 1.07 Blue 15 Above 400° I/O LSR HC Plus-35140 3 Phthalocyanine Blue GS 40 1.42 Blue 15 Above 400° I/O HCR HC Plus-35041 Ultramarine Blue 45 1.32 Blue 29 Above 400° I/O LSR HC Plus-35141 Ultramarine Blue 60 1.51 Blue 29 Above 400° I/O HCR Green HC Plus-35050 Phthalocyanine Green 25 1.13 Green 7 Above 400° I/O LSR HC Plus-35150 Phthalocyanine Green 40 1.71 Green 7 Above 400° I/O HCR Violet HC Plus-35033 Quinacridone Red 20 1.04 Violet 19 Above 400° I/O LSR HC Plus-35130 Quinacridone Red 40 1.40 Violet 19 Above 400° I/O HCR Brown HC Plus-35070 Yellow Inorganic - Cr/Sb/Ti Oxide 30 1.26 Brown 24 Above 400° I/O LSR HC Plus-35170 Yellow Inorganic - Cr/Sb/Ti Oxide 60 1.79 Brown 24 Above 400° I/O HCR Black HC Plus-35080 Carbon Black 12 1.03 Black 7 Above 400° I/O LSR HC Plus-35180 Carbon Black 30 1.14 Black 7 Above 400° I/O HCR Copyright © 2024, Avient Corporation.

Each of such adjustments has not yet occurred, are out of the Company's control and/or cannot be reasonably predicted. Three Months Ended March 31, Reconciliation to Consolidated Statements of Income 2023 2022 Sales $ 845.7 $ 892.2 Gross margin - GAAP 247.6 254.4 Special items in gross margin (Attachment 3) 8.0 5.8 Adjusted gross margin $ 255.6 $ 260.2 Adjusted gross margin as a percent of sales 30.2 % 29.2 % Operating income - GAAP 57.1 102.2 Special items in operating income (Attachment 3) 27.1 6.8 Adjusted operating income $ 84.2 $ 109.0 Adjusted operating income as a percent of sales 10.0 % 12.2 % Three Months Ended March 31, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Net income from continuing operations – GAAP $ 21.3 $ 64.7 Income tax expense 7.7 20.0 Interest expense, net 28.8 16.9 Depreciation and amortization 50.5 37.6 EBITDA from continuing operations $ 108.3 $ 139.2 Special items, before tax 27.3 6.7 Depreciation and amortization included in special items (1.8) (2.1) Adjusted EBITDA $ 133.8 $ 143.8 Adjusted EBITDA as a % of sales 15.8 % 16.1 % NEWS RELEASE Attachment 1

Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. Three Months Ended September 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 38.2 $ 0.41 $ 5.1 $ 0.06 Special items, after-tax 6.6 0.07 32.0 0.35 Amortization expense, after-tax 15.0 0.16 15.2 0.16 Adjusted net income / EPS $ 59.8 $ 0.65 $ 52.3 $ 0.57 (1) Per share amounts may not recalculate from figures presented herein due to rounding Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 38.7 $ 5.1 Income tax expense (benefit) 11.3 (0.1) Interest expense, net 26.9 30.3 Depreciation & amortization 45.1 46.4 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales 15.9 % 16.3 % 1 Three Months Ended September 30, 2024 2023 Sales: Color, Additives and Inks $ 521.5 $ 486.5 Specialty Engineered Materials 294.6 267.9 Corporate (0.9) (0.7) Sales $ 815.2 $ 753.7 Operating income: Color, Additives and Inks $ 75.5 $ 64.5 Specialty Engineered Materials 36.4 30.3 Corporate (34.7) (60.5) Operating income $ 77.2 $ 34.3 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 24.6 Specialty Engineered Materials 20.7 20.5 Corporate 2.5 1.3 Depreciation & amortization $ 45.1 $ 46.4 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 97.4 $ 89.1 Specialty Engineered Materials 57.1 50.8 Corporate (32.2) (59.2) Other (expense) income, net (0.3) 1.0 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.7 % 18.3 % Specialty Engineered Materials 19.4 % 19.0 % 2 Year Ended December 31, 2023 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.9) Adjusted EBITDA $ 501.8 3 Avient Q3 Earnings Webcast Slides w_Appendix and Non-GAAP.pdf 2024 AVNT Q3 Webcast Slides w non-GAAP.pdf Q3 Avient Webcast Slides with Non-GAAP Recs.pdf Appendix Slides for webcast.pdf IR Deck - AVNT-2024.09.30 - 10.30.24 3PM (002).pdf Attachment