In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Platform sales and operating income (OI) 2006Y* 2008Y* 2010Y* 2012Y* 2012PF** Global Specialty Engineered Materials Sales $ 345.3 $ 514.0 $ 517.4 $ 543.6 $ 773.0 Global Color, Additives and Inks Sales 531.8 554.3 527.4 703.5 828.5 Designed Structures and Solutions - - - - 850.6 Specialty Platform Sales $ 877.1 $ 1,068.3 $ 1,044.8 $ 1,247.1 $ 2,452.1 Performance Products and Solutions Sales 1,166.2 1,001.4 776.3 837.0 696.1 PolyOne Distribution Sales 732.8 796.7 911.9 1,030.3 1,030.3 Corporate and Eliminations (153.7) (127.7) (111.1) (121.8) (121.6) Total Sales $ 2,622.4 $ 2,738.7 $ 2,621.9 $ 2,992.6 $ 4,056.9 Global Specialty Engineered Materials OI $ 3.9 $ 17.6 $ 49.7 $ 47.0 $ 47.7 Global Color, Additives and Inks OI 8.9 28.1 37.7 66.8 81.6 Designed Structures & Solutions OI - - - - 20.9 Specialty Platform OI $ 12.8 $ 45.7 $ 87.4 $ 113.8 $ 150.2 Performance Products and Solutions OI 64.2 31.3 54.0 74.9 37.4 PolyOne Distribution OI 19.2 28.1 42.0 66.0 66.0 Sunbelt Joint Venture OI 102.9 28.6 18.9 - - Corporate and eliminations (4.6) (28.9) (32.5) (33.7) (40.0) Special items in OI 39.1 (396.2) 4.8 (53.9) (53.9) Operating income (loss) GAAP $ 233.6 $ (291.4) $ 174.6 $ 167.1 $ 159.7 Sunbelt equity income (107.0) (32.5) (23.1) - - Special items in OI (39.1) 396.2 (4.8) 53.9 53.9 Operating income adjusted $ 87.5 $ 72.3 $ 146.7 $ 221.0 $ 213.6 Global Specialty Engineered Materials - OI % of sales 1.1% 3.4% 9.6% 8.6% 6.1% Global Color, Additives and Inks - OI % of sales 1.7% 5.1% 7.1% 9.5% 9.8% Designed Structures & Solutions – OI % of sales - - - - 2.5% Specialty platform OI - % of sales 1.5% 4.3% 8.4% 9.1% 6.1% PP&S operating OI - % of sales 5.5% 3.1% 7.0% 9.0% 5.4% Distribution OI - % of sales 2.6% 3.5% 4.6% 6.4% 6.4% PolyOne OI adjusted - % of sales 3.3% 2.6% 5.6% 7.4% 5.3% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment. ** Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and exclude the Resin business assets. *** Restated results to exclude the Resin business and to remove Specialty Coatings from the Performance Products and Solutions segment into Global Color, Additives and Inks segment. Average Debt Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne Debt $ 705.8 $ 705.2 $ 706.9 $ 1,055.5 $ 1,031.2 $ 840.9 Average Equity Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne shareholders’ equity $ 604.3 $ 629.3 $ 629.1 $ 871.8 $ 993.9 $ 745.7 Platform sales and operating income (OI) H1 2012*** H1 2013*** H1 2013**** Global Specialty Engineered Materials Sales $ 280.9 $ 352.0 $ 285.1 Global Color, Additives and Inks Sales 413.9 434.7 409.2 Designed Structures & Solutions Sales - 240.4 - Specialty Platform Sales $ 694.8 $ 1,027.1 $694.3 Performance Products and Solutions Sales 336.0 336.7 317.5 PolyOne Distribution Sales 533.6 543.1 543.1 Corporate and Eliminations (62.3) (68.2) (68.2) Total Sales $ 1,502.1 $ 1,838.7 $ 1,486.7 Global Specialty Engineered Materials OI $ 24.6 $ 32.5 $ 31.2 Global Color, Additives and Inks OI 44.0 54.7 52.0 Designed Structures & Solutions OI - 10.5 - Specialty Platform OI $ 68.6 $ 97.7 $ 83.2 Performance Products and Solutions OI 19.3 27.5 25.7 PolyOne Distribution OI 33.4 33.1 33.1 Corporate and eliminations (20.3) (25.7) (20.3) Special items in OI (20.3) (11.4) (20.3) Operating income - GAAP $ 80.7 $ 121.2 $ 101.4 Special items in OI 20.3 11.4 20.3 Operating income adjusted $ 101.0 $ 132.6 $ 121.7 Global Specialty Engineered Materials - OI % of sales 8.8% 9.2% 10.9% Global Color, Additives and Inks - OI % of sales 10.6% 12.6% 12.7% Designed Structures & Solutions - OI % of sales - 4.4% - Specialty platform - OI % of sales 9.9% 9.5% 12.0% PP&S operating - OI % of sales 5.7% 8.2% 8.1% Distribution OI - % of sales 6.3% 6.1% 6.1% PolyOne OI adjusted - % of sales 6.7% 7.2% 8.2% Reconciliation to Condensed Consolidated Balance Sheets H1 2013 Short-term debt and current portion of long-term debt $ 8.7 Long-term debt 1,022.5 Less cash and cash equivalents (392.4) Specialty Platform Gross Margin Percentage 2006Y* Q2 2013**** Global Specialty Engineered Materials Sales $ 345.3 $ 143.5 Global Color, Additives and Inks Sales 531.8 207.5 Specialty Platform Sales $ 877.1 $ 351.0 Global Specialty Engineered Materials Gross Margin $ 41.6 $ 37.3 Global Color, Additives and Inks Gross Margin 83.6 71.8 Specialty Platform Gross Margin $ 125.2 $ 109.1 Specialty Platform Gross Margin Percentage 14.3% 31.1% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

PE Tarpaulin manufacturer PE TARPAULIN MANUFACTURER O U T D O O R T A R P S • Resist UV light degradation in European climates for an extended period • Maintain color stability • Enhanced UV resistance against UV degradation • Delivered colors stability with good light fastness • Provided cost effectiveness by combining colorant and UV solutions • Offered in-house Q-Lab UV (QUV) tester to meet strict customer standard / requirement Smartbatch Combination Colorants and Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives Slide 1: PE Tarpaulin manufacturer

HVAC AUTOMOTIVE PRODUCER N O R T H A M E R I C A Excelite™ IM Chemical Foaming Additives WHY AVIENT? https://www.avient.com/products/polymer-additives/foaming-agents/colormatrix-excelite-chemical-foaming-additives

NORBERT MERKLEIN Vice President and General Manager EMEA, Color, Additives and Inks Norbert Merklein serves as vice president and general manager for the Europe, Middle East and Africa (EMEA) region of Color, Additive and Inks at Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Merklein previously served in management positions at Clariant International, Ltd., including Head of Group Procurement; Vice President, Business Line Plastics and Special Applications and Head of Region Europe for the Pigments and Additives Division.

WOUND CARE MA NUFAC TURER S E L F - A D H E S I V E B A N D A G E S • Provided aqueous dispersions that are safe for uses in contact with human skin and produce low levels of VOCs • Offered high antioxidant performance to protect bandages from degradation and improve storage time • Collaborated to deliver effectively and efficiently with accelerated development cycles and streamlined operations Aquamix Additive Formulations WHY AVIENT? https://www.avient.com/products/polymer-additives/additive-dispersions/aquamix-chemical-dispersions Slide 1: Wound care Manufacturer

More complexities arose: the addition of an antimicrobial ingredients had an adverse effect on the color harmony. The resulting Smartbatch solution was developed specifically for the OEM’s patient mobility product, but was so effective that the OEM has plans to incorporate this technology into additional devices currently being developed. © 2022, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 ANTIMICROBIAL TECHNOLOGY, CUSTOM COLORS AND PERFORMANCE ADDITIVES IN ONE MASTERBATCH.

Color & Additive Solutions for Biopolymers In recent times, interest in using biopolymers has grown in several industry sectors. Constituents added to resins, such as colorants and additives, must be adapted to obtain a final article compliant with prescribed standards such as EN13432 for Packaging Applications and EN17033 for Agriculture Mulch Films. Color & Additive Formulations for Biodegradable Resins & Blends Using a selected list of pigments and additives, Avient color experts know how to enhance biodegradable starch blends or PLA without affecting degradability of the resins.

& Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O C T O B E R 3 1 , 2 0 2 4 W E B C A S T P R E S E N TA T I O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj. In addition, operating income before the effect of special items is a component of Avient’s annual incentive plans and is used in debt covenant computations. 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 Reconciliation to Condensed Consolidated Statements of Income $ EPS Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 Special items, after-tax 79.3 0.86 Amortization expense, after-tax 61.5 0.67 Adjusted net income / EPS $ 216.6 $ 2.36 Adjusted Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Capital expenditures (119.4) Free cash flow 82.2 Taxes paid on gain on sale of business 104.1 Adjusted free cash flow $ 186.3 Year Ended December 31, 2023 Sales: Color, Additives and Inks $ 2,007.4 Specialty Engineered Materials 1,138.2 Corporate (2.8) Sales $ 3,142.8 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 Adjusted EBITDA as a percent of sales 16.0 % 3 Avient M11 Investor Presentation.pdf IR Deck - AVNT-2024.09.30 (M11) - 11.05.24 11AM.pdf Attachment

AVIENT SOLUTION Colorant Chromatics UV Laser Marking Additives for FEP LEARN MORE © 2024, Avient Corporation. All Rights Reserved https://www.avient.com/products/polymer-additives/laser-marking-additives/colorant-chromatics-uv-laser-marking-technology Wire & cable manufacturer

WOON KEAT MOH Senior Vice President and President, Color, Additives & Inks Woon Keat Moh (“Moh”) is senior vice president and president, Color, Additives & Inks, for Avient Corporation, a premier provider of specialized and sustainable material solutions and services. This has included Sales Director for Avient’s Color and Additives segment in Asia and General Manager of Engineered Materials Asia.