The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. Avient reflects 2022 estimated revenue of $5,100M and estimated CAPEX of $90M (excludes IT system upgrade of $25M and synergy capture CAPEX of $20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2022E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 31 1.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. D is t. ) K W R R P M P P G A V Y F U L G C P IF F H X L F M C F O E H U N E C L K R A E M N A S H C E S C L G R A A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of April 27, 2021 Avient reflects 2021 estimated revenue of $4,300M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 27 1.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2022E (%) Being asset light helps us to generate strong free cash flow that is in line with other specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2022 estimated EBITDA of $635M and estimated CAPEX of $90M (excludes IT system upgrade of $15M and synergy capture CAPEX of $10M) Avient PF reflects 2022 modelled EBITDA of $660M and estimated CAPEX of $120M to reflect Dyneema run-rate CAPEX, as well as potential sale of Distribution.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. Avient reflects 2022 estimated revenue of $5,100M and estimated CAPEX of $90M (excludes IT system upgrade of $25M and synergy capture CAPEX of $20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2022E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 27 1.

AIRCRAFT INTERIOR OEM A I R C R A F T F L O O R I N G • Meet aircraft flammability requirements (FAA) • Provide flame retardance and smoke mitigation • Maintain physical properties • Control viscosity and allow enhanced processability • Retain product integrity as contaminant free • Provide product traceability • Provided strong global EHS and regulatory support to minimize risk • Offered a solution to improve quality consistency and control viscosity • Enhanced mixing capability and improved processing temperature and imprint hold • Allowed greater security of supply with multiple manufacturing locations • Provided an integrated solution of plastisols and pigment dispersions that met traceability requirements with JIT delivery KEY REQUIREMENTS QUALITY + PERFORMANCE WHY AVIENT?

The non-GAAP financial measures include: Adjusted Earnings Per Share, Adjusted EBITDA, Adjusted Free Cash Flow and adjusted EBITDA margins. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 3 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & 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 $515 to $540 million Adjusted EBITDA $2.55 to $2.70 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION AU G U S T 6 , 20 24 W EB CAS T P RE SE N TATI O N 6 Q2 2024 HIGHLIGHTS • 5% organic sales growth supported by broad-based growth across all regions in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Cost control and operational discipline expanded EBITDA margins by 100 bps • EPS exceeded guidance by $0.05 and increased 21% vs the prior year Adj. 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

Syncure™ XLPE Cross-linkable Polyethylene Formulations FOR LOW VOLTAGE CABLES PRODUCT SELECTION GUIDE Syncure™ XLPE MOISTURE CROSS-LINKABLE POLYETHYLENE INSULATION FOR LOW VOLTAGE CABLE SYSTEMS SYSTEM S100FH S100FH-XUV S100FH-UV S100FV S100FV-UV S112NA S120NA S200FH S200FV Applications Building Wire, Tray Cable Building Wire, Tray Cable Photo-Voltaic (PV) Wire Building Wire, Tray Cable Building Wire, Tray Cable Building Wire, Teck-90 Pipe and Tube Building Wire, Tray Cable, Service Entrance Building Wire, Tray Cable, Service Entrance Specification UL 44 UL 44 UL 44, UL 4703 UL 44 UL 44 CSA 22.2 Suitable for NSF 61 UL 44 UL 44 Wire Type XHHW-2, RHW-2, USE-2, SIS XHHW-2, RHW-2, USE-2, SIS XHHW-2, RHW-2, USE-2, SIS, PV XHHW-2, RHW-2, SIS XHHW-2, RHW-2, USE-2, SIS, PV RW-90, Teck-90 – RHW-2, RHW, RHH, XHHW-2, XHH, XHHW, SIS RHW, RHH, RHW-2 Components % 83% S1054A 17% V0022G RoHS 83% S1054A 17% V0022G-UV RoHS 70% S1054A 30% V0022G-UV RoHS 50% S1054A 50% V0044G RoHS 50% S1054A 50% V0044G-UV RoHS 95% S1054A 5% S1000B 95% S1016A 5% S1037B 78% S1054A 22% SC5400-0002 RoHS MB ALT FR 50% S1054A 50% SC5400-0003 RoHS MB ALT FR Features Horizontal Flame Horizontal Flame, UV Resistant, Colors Possible Horizontal Flame, FV-1 Flame, UV Resistant, Colors Possible VW-1 VW-1, UV Resistant, Colors Possible Non-FR Rigid Pipe Applications Horizontal Flame, DBDPE-free VW-1, DBDPE-free GENERAL PROPERTIES Specific Gravity 1.01 1.02 1.10 1.31 1.31 0.92 0.95 1.01 1.31 Hardness Shore D, 10 Seconds 47 47 47 48 48 47 59 47 48 Gel 68 68 70 70 70 72 72 68 70 TENSILE PROPERTIES Tensile Strength (psi) 2800 2500 2650 3200 2650 2800 4500 2800 3200 Elongation % 400 400 540 470 540 400 80 400 470 Tensile Retention % 100 100 97 110 110 95 75 95 100 Elongation Retention % 90 90 94 100 100 90 75 90 93 ELECTRICAL Dielectric Strength (V/mil) 1000 1400 1400 1200 1200 1000 – 1000 1200 Dielectric Constant 2.31 2.45 2.61 2.61 2.61 2.24 2.1 2.31 2.61 Dissipation Factor % 0.0012 0.0080 0.008 0.0043 0.0043 0.0008 0.002 0.0012 0.0043 THERMAL Temperature Rating °C 90 90 90 90 90 90 125 90 90 Heat Deformation % 10 5 5 5 5 10 10 10 5 The Syncure™ XLPE portfolio is a two-step, silane- grafted, moisture cross-linkable polyethylene system.

Long glass fiber formulations using this environmental stabilization technology resolve such aesthetic concerns by providing a smooth, fiber-free finish that is perfect for bringing structural parts out of hiding. Complēt moisture resistant nylons reinforced with long glass fiber produce a smooth, fiber-free finish without special processing to give molded components a high-quality appearance.

KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified sites, providing global consistency and increased security of supply • Documented change control beyond CAS number reducing risk of change • Non-phthalate and formulated without animal- derived substances • Available for use in a wide range of polymers including polyolefins, styrenics, polycarbonate and alloys, polyester, POM • Functionality can be combined with colorants into convenient combination concentrates and ready-to-use formulations REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Drug Master File (Type III) and/or Device Master File • Food contact established with FDA/EU* APPLICATION BULLETIN * FDA/EU compliance information available upon request FUNCTIONALITY TARGET APPLICATIONS DRUG DELIVERY DEVICES SYRINGES & NEEDLES DIAGNOSTICS CATHETERS Clarifying PP Sorbitol-free for transparent applications with reduced migration and improved thermal stability     Lubricant— permanent/ non-migrating Fast acting reduction in friction for wide variety of polymers such as PP, ABS, POM, PC    Protection from UV in transparent applications for PP, PE, PETG, COP UV blocking in 290-450nm with no impact on clarity; can be combined with colors (e.g., amber)   Antistatic ready-to- use solution for PP, ABS, PC/ABS Permanent/non-migrating; fast decay time independent of % relative humidity  Gamma/e-beam sterilization protection of the polymer Preserving the properties of PP and COC/COP; reduction in yellowing using Color Compensation Technology (CCT)    Reduced material consumption/cycle time—nucleation Fast acting new generation nucleant for PE and PP; improved thermal and mechanical properties allows wall thinning; reduction of tolerance/dimensional problems between different colors    Laser marking replacing ink printing/labels Solvent-free, high-speed identification for Nd/YAG laser for PE,PP, ABS, PC, POM     Antioxidants for PE, PP, TPE Thermal protection during converting/downstream sterilization    Brand protection/ anticounterfeit Covert and non-covert systems   Healthcare use limitations apply—see below.

KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified sites, providing global consistency and increased security of supply • Documented change control beyond CAS number, reducing risk of change • Non-phthalate and formulated without animal- derived substances • Available for use in a wide range of polymers including polyolefins, styrenics, polycarbonate and alloys, polyester, POM • Functionality can be combined with colorants into convenient combination concentrates or formulations REGULATORY SUPPORT • Pre-tested raw materials: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Drug Master File (Type III) • Food contact established with FDA/EU* APPLICATION BULLETIN * FDA/EU compliance information available upon request FUNCTIONALITY TARGET APPLICATIONS EBM/IBM CONTAINERS CLOSURES FILM COMBINATION DEVICES Clarifying PP Sorbitol-free—possibilities in packaging ocular solutions    Slip/torque reduction Slip for PE, PP films, processing aid, torque reduction for closures   Protection from UV in transparent packaging for PP, PE, PETG, COP UV blocking in 290–450nm with no impact on clarity    Antistatic ready-to-use solution for PE films e.g. for API handling Permanent/non-migrating; fast decay time independent of % relative humidity  Antistatic masterbatch for PE films Cost effective, long-lasting, migrating type but with biological evaluation  Gamma/e-beam sterilization protection of the polymer Preserving the properties of PP and COC/COP. Reduction in yellowing using Color Compensation Technology (CCT)   Reduced material consumption/cycle time/improved properties—nucleation Fast acting new generation nucleant for PE and PP; improved dimensional stability, thermal and mechanical properties    Laser marking replacing ink printing/labels Solvent-free, high-speed identification for Nd/YAG laser    Antiblock for PE/PP film Non-migrating additive system maintaining high gloss and printability  Antioxidants for PE, PP, TPE Thermal protection during converting/ downstream sterilization     Brand protection/ anticounterfeit Range of covert and non-covert systems    Volatiles/odor absorber for PE/PP Physical absorption of a wide range of molecules responsible for odor, VOC and potential extractables/ leachables in plastics   Healthcare use limitations apply—see below.