& Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 21 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR , AD DI TI VES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 22 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPEC IA LTY ENGI NEER ED MATERI ALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 23 B Y E N D M A R K E T 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. We also monitor earnings (defined as net income from continuing operations) before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA (EBITDA before the impact of special items) as a supplement to our GAAP measures. Three Months Ended June 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 33.6 $ 0.36 $ 22.1 $ 0.24 Special items, after-tax 21.8 0.24 19.6 0.21 Amortization expense, after-tax 14.8 0.16 16.2 0.18 Adjusted net income / EPS $ 70.2 $ 0.76 $ 57.9 $ 0.63 Three Months Ended June 30, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 33.8 $ 22.3 Income tax expense 11.2 10.4 Interest expense, net 26.6 29.4 Depreciation & amortization 44.9 47.6 EBITDA from continuing operations $ 116.5 $ 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales 16.9 % 15.9 % 1 Three Months Ended June 30, 2024 2023 Sales: Color, Additives and Inks $ 542.0 $ 524.5 Specialty Engineered Materials 308.1 300.8 Corporate (0.4) (0.9) Sales $ 849.7 $ 824.4 Operating income: Color, Additives and Inks $ 86.1 $ 68.0 Specialty Engineered Materials 42.8 39.7 Corporate (56.4) (45.4) Operating income $ 72.5 $ 62.3 Depreciation & amortization: Color, Additives and Inks $ 21.8 $ 25.7 Specialty Engineered Materials 20.8 19.9 Corporate 2.3 2.0 Depreciation & amortization $ 44.9 $ 47.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 107.9 $ 93.7 Specialty Engineered Materials 63.6 59.6 Corporate (54.1) (43.4) Other expense, net (0.9) (0.2) EBITDA from continuing operations 116.5 109.7 Special items, before tax 28.1 21.7 Interest expense included in special items (1.0) — Depreciation & amortization included in special items (0.3) (0.1) Adjusted EBITDA $ 143.3 $ 131.3 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 19.9 % 17.9 % Specialty Engineered Materials 20.6 % 19.8 % 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 AVNT M8 Investor Presentation.pdf Avient Disclaimer SLide.pdf AVNT M8 Investor Presentation IR Deck - AVNT-2024.06.30 (M8) (8.26.24 11AM Milestone August 26 1053 am).pdf Attachment

Seat Ventilation Tube Case Study Snapshot L E A D I N G LU X U RY C A R M A N U FAC T U R E R S E A T V E N T I L A T I O N T U B E • Reliable sealing performance • Good bonding ASA+PBT • Excellent chemical resistance and good flexibility • Provided a TPE with good flexibility to maintain a tight seal within the ventilation system, preventing air leaks and ensuring efficient airflow • Formulated a durable and chemically resistant grade to help withstand the various stresses and environmental conditions that the ducts may encounter • Offered quick technical support to fix the leak problem for customer Versaflex Thermoplastic Elastomers KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Slide 1: Leading Luxury Car manufacturer

H O M E W A R E P RO D U C T S M A N U FAC T U R E R C L I P & L O C K C L O S U R E • Food contact compliance • Good compatibility • Excellent hinging properties • Reduce strain marks • Retain clarity • Provided extensive technical support throughout formulation development • Met exact mechanical properties, provided excellent hinging properties and reduced strain whitening marks • Increased flexibility & lowered temperature flexing properties • Enabled customer to differentiate products & add value for the end consumer Versaflex™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Homeware products manufacturer

AUTOMOTIVE OEM W A T E R P R O O F S E A L O N A C C E S S O R Y P A R T • FDA food contact compliance • Color match to OEM-specified gray • 70 Shore A durometer for overmolding to PP • Scratch and mar resistance • Provided material compliant with FDA 21 CFR 177.1210 • Supplied both the base resin and at-press colorant to meet OEM specifications • Offered TPV alloy grade that enabled easy processing and durable surface aesthetics • Specified material in North America with design engineers and supplied out of a facility in China to meet production needs Versalloy™ XL Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? All Rights Reserved https://www.avient.com/products/thermoplastic-elastomers/versalloy-thermoplastic-elastomers

F O O D P RO C E S S I N G B E LT M A N U FAC T U R E R C O N V E Y O R B E L T • Electrical resistivity of E+8 Ω • FDA and EU 10/2011 food compliant • Designed to meet ATEX standard • Light color (white) • Provided a permanent statically dissipative solution • Met stringent compliance requirements • Reduced manufacturing steps from two-step process to single-step process Stat-Tech™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? All Rights Reserved https://www.avient.com/products/thermoplastic-elastomers/stat-tech-tpe-static-dissipative-electrically-conductive-thermoplastic-elastomers Food processing belt manufacturer

G L O B A L E L A S T I C & R U B B E R P R O D U C T M A N U FA C T U R E R T O U R N I Q U E T B A N D • Hardness 45, shore A • Thickness 0.5mm and Tensile set https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers Global Elastic & Rubber Product Manufacturer

AU TO M O T I V E C O M P O N E N T S M A N U FA C T U R E R O U T S I D E R E A R - V I E W M I R R O R G A S K E T • Black materials with hardness 60 and shore A • UV Stabilized • Overmouldable on to PP • ROHS Compliant • Customer specified material • Utilized global reach to translate customer approved solution from Europe to India • Reduced development time as material was already qualified in Europe • Reduced import/export costs • Enabled Indian business to specify Avient as a preferred supplier Custom GLS™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers Automotive components manufacturer

E U R O P E A N M E D I C A L D E V I C E M A N U FA C T U R E R F A C E M A S K V E N T I L A T I O N V A L V E • ISO 9001 and USP VI compliant • Compatible with overmolding onto PP • Translucent and highly colorable • Soft touch • Provided valuable regulatory support and documentation, enabling faster internal trials and material qualification for this customer • Worked together with customer to select the best material from a broad portfolio of medical TPE grades • Trusted as a polymer supplier for multiple healthcare applications Dynaflex™ G2711 Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION BIOCOMPATIBILITY + SOFT TOUCH LEARN MORE © 2020, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.avient.com/products/thermoplastic-elastomers/dynaflex-thermoplastic-elastomers European medical device manufacturer

PowerPoint Presentation M E D I C A L D E V I C E M A N U FA C T U R E R O S T O M Y B A G S E A L S • Comply with ISO 10993 and FDA Class II medical device regulations • Offer Good sealing performance • Provide technical supports for processing recommendations • Deliver a high compression set materials to improve comfort • Provided a medical-grade TPE to help the customer meet necessary regulatory specifications and gain market share • Provided technical support during design and the manufacturing process for EVA bonding • Delivered soft-touch feel and excellent sealing performance Versaflex HC Thermoplastic Elastomers - G2705 Formulation KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-hc-thermoplastic-elastomers Slide 1: MEDICAL Device manufacturer

As a continuation of its specialty transformation, the company announced in April it had entered into an agreement to acquire the to improve from the prior quarter and growth to continue in the Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility