Q 1 2 0 2 3 -8% +6% -1% Flat 10 Total Avient -2.6% 2023 G U IDA N CE $128 $525 $0.56 $2.40 2023 GUIDANCE 12 $800 $3,280 Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 13 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ millions) 2023E Cash Flow from Operating Activities 320$ Less: CapEx (140) Free Cash Flow 180$ Adjusted EBITDA 525$ Net Debt / Adjusted EBITDA 3.0x SUSTAINABILITY AS A GROWTH DRIVER 14 LONG-TERM REVENUE GROWTH DRIVERS Revenue From Sustainable Solutions* 2016-2022 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** $1,175M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue SUSTAINABILITY REPORT 2022 • Provides progress on 2030 goals • Reaffirms commitment to U.N.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to:  The final amount of charges resulting from the planned North American asset realignment and the Company’s ability to realize anticipated savings and operational benefits from the asset realignment;  Our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies;  Our ability to successfully integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive;  Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future;  The financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability;  The speed and extent of an economic recovery, including the recovery of the housing market;  Our ability to achieve new business gains;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets where we conduct business;  Changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online;  Fluctuations in raw material prices, quality and supply and in energy prices and supply;  Production outages or material costs associated with scheduled or unscheduled maintenance programs;  Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters;  An inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions, employee productivity goals, and an inability to raise or sustain prices for products or services;  An inability to raise or sustain prices for products or services;  An inability to maintain appropriate relations with unions and employees;  The inability to achieve expected results from our acquisition activities;  Our ability to continue to pay cash dividends;  The amount and timing of repurchases of our common shares, if any; and  Other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 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 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 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 % 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

© 2020, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012

© 2022, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 ANTIMICROBIAL TECHNOLOGY, CUSTOM COLORS AND PERFORMANCE ADDITIVES IN ONE MASTERBATCH.

No freedom from any patents or other industrial or intellectual property rights is granted or to be inferred.

Valve gates may be pneumatically or hydraulically activated. If a foaming agent is required (to produce foamed parts), a mechanical shut-off nozzle must be used to control foaming activity and to prevent drooling.

An overview of the system components is to the right. Footprint (LxW cm) 86 x 71 98 x 38 60 x 35 55 x 30 86 x 80 Typical max. throughput (kg/hr) 1000 625 250 50 120 Max. metering rate (cc/s) 10 10 10 1.8 1.25 Continuous use Yes Yes No No Yes Transfer pumps PC/Peri Peri NA NA PC Metering pumps PC/Peri PC/Peri PC/Peri Peri PC Interchangeable cassette Yes Yes Yes No Yes Typical PlanetPak delivery unit 25L 25L NA 1L 25L Other delivery packaging IBC/LN Drum/LN LN LN NA PC PUMP RATE (cc/rev) 0.09 0.28 0.87 2.6 5.2 RECOMMENDED OUTPUT RANGE (g/min) 0.9 to 9 2.8 to 28 8.7 to 87 26 to 260 53 to 520 PC PUMP MAX (g/min) 18 56 174 520 1040 CONTROLLER CMG 3000 FlexG CMG 5000 CMG 6000 Application Injection Molding Extrusion Melt Injection Volumetric/gravimetric V V (weight data) V/G V/G Data export/network No Yes Yes Yes Touch screen No Yes Yes Yes Multiple log-in levels No No Yes Yes FlexCart Model S Optional Yes No Mini Model S No Yes No Micro Yes No Yes No Nano Yes No No No Melt Injection No No No Yes Choosing a progressive cavity pump for transfer or metering Choosing the controller MAKING THE RIGHT CHOICE Here are the options which should be considered for an informed choice of combinations: (Note: LN = 3, 5 & 10L molded container PC = Progressing Cavity Pump Peri = Peristaltic Pump) Avient can provide support and assistance on every aspect of liquid color and additive processing.

The predictions provided guidance in selecting the right temperatures to use in a 30-day compressive creep test that enabled PDI to more accurately estimate device performance over a 20-year span.

These factors make choosing the right material more important than ever for enhanced durability and longer product life.