Color & Insights Report: January 2022

Three Months Ended September 30, 2023 Three Months Ended September 30, 2022 Reconciliation to Condensed Consolidated Statements of Income: $ EPS $ EPS Net income (loss) from continuing operations attributable to Avient shareholders $ 5.1 $ 0.06 $ (27.4) $ (0.30) Special items, after tax 32.0 0.35 68.3 0.75 Amortization expense, after-tax 15.2 0.16 $ 13.4 $ 0.14 Adjusted net income / EPS $ 52.3 $ 0.57 $ 54.3 $ 0.59 Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Sales - GAAP $ 753.7 $ 823.3 Pro Forma APM adjustments — 60.7 Pro forma adjusted sales $ 753.7 $ 884.0 Net income from continuing operations – GAAP $ 5.1 $ (27.8) Income tax (benefit) expense (0.1) (1.2) Interest expense, net 30.3 37.3 Depreciation and amortization 46.4 39.8 EBITDA from continuing operations $ 81.7 $ 48.1 Special items, before tax 43.2 82.0 Interest expense included in special items (2.2) (10.0) Depreciation and amortization included in special items — (0.8) Adjusted EBITDA $ 122.7 $ 119.3 Pro forma APM adjustments — 17.2 Pro forma adjusted EBITDA $ 122.7 $ 136.5 Pro forma adjusted EBITDA as a % of sales 16.3 % 15.4 % 1 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense, net 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA from continuing operations $ 283.4 $ 351.5 Special items, before tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 Adjusted EBITDA as a % of sales 5.4 % 11.5 % Reconciliation to EBITDA and Adjusted EBITDA: Three Months Ended December 31, 2022 Net loss from continuing operations – GAAP $ (16.6) Income tax benefit (60.8) Interest expense, net 49.4 Depreciation and amortization 48.6 EBITDA from continuing operations $ 20.6 Special items, before tax 104.3 Interest expense included in special items (16.0) Depreciation and amortization included in special items (1.5) Adjusted EBITDA $ 107.4 Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended December 31, 2022 Net loss from continuing operations attributable to Avient shareholders $ (17.0) Special items, after tax 38.3 Amortization expense, after-tax 14.6 Adjusted net income from continuing operations excluding special items 35.9 Pro forma adjustments* 2.5 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 Weighted average diluted shares 91.7 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. 2 AVNT November IR Presentation (11.3) 3PM Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition What we do: We are a formulator Slide Number 7 Avient protective materials �First Year Slide Number 9 Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 Slide Number 23 Slide Number 24 Slide Number 25 Avient is asset light Free cash flow conversion Multiple expansion Slide Number 29 Slide Number 30 Slide Number 31 2022 pro forma segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 35 IR Deck - AVNT-2023.09.30 Non GAAP Recs Attachment

Reconciliation of Pro Forma Net Debt December 31, 2022 Short-term and current portion of long term debt $ 2.2 Total long-term debt, net 2,176.7 Unamortized discount and debt issuance cost 37.4 Total debt $ 2,216.3 Cash (641.1) Net taxes due from sale of business 105.0 Adjusted cash $ (536.1) Net debt $ 1,680.2 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA $ 283.4 $ 351.5 Special items, before income tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 EBITDA as a % of sales 5.4 % 11.5 % 2 Reconciliation of Adjusted EPS 2006 2018 Net income from continuing operations attributable to Avient common shareholders $ 130.9 $ 161.1 Joint venture equity earnings, after tax (68.5) — Special items, after tax (21.2) 44.6 Special items, tax adjustments (30.0) (10.4) Amortization expense, after tax 1.4 19.5 Adjusted net income from continuing operations attributable to Avient common shareholders $ 12.6 $ 214.8 Diluted shares 92.8 80.4 Adjusted EPS attributable to Avient common shareholders $ 0.14 $ 2.67 Three Months Ended Year Ended Year Ended Reconciliation of Pro Forma Adjusted Earnings per Share December 31, 2022 December 31, 2021 Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ 82.8 $ 151.8 Special items, after tax 38.3 116.2 50.0 Amortization expense, after-tax 14.6 49.0 44.9 Adjusted net income from continuing operations excluding special items 35.9 248.0 246.7 Pro forma adjustments* 2.5 13.6 9.9 APM pro forma amortization expense, after tax* — 19.1 21.2 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 $ 280.7 $ 277.8 Weighted average diluted shares 91.7 92.2 92.1 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 $ 3.04 $ 3.02 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale.

The independent auditor reports directly to the Audit Committee. Recommend to the Board whether the financial statements should be included in the Annual Report on Form 10-K. 12. Review and evaluate the staffing and qualifications of the financial reporting and control function.

What is FATCA Reporting? Certain payees are exempt from FATCA reporting. Exemption from FATCA reporting code.

Leadership (A/A-): Implementing current best practices Management (B/B-): Taking coordinated action on climate issues Awareness (C/C-): Knowledge of impacts on, and of, climate issues Disclosure (D/D-): Transparent about climate issues UNDERSTANDING YOUR SCORE REPORT PolyOne Region North America Country United States of America Questionnaire General Activity Group Trading, wholesale, distribution, rental & leasing The CDP Score Report allows companies to understand their score and indicate which categories require attention to reach higher scoring levels. Investors will additionally receive a copy of the CDP Score Report upon request. CDP SCORE REPORT - CLIMATE CHANGE 2020 Your CDP score Average performance B C D C Trading, wholesale, distribution, rental & leasing North America Global Average CDP SCORE REPORT - CLIMATE CHANGE 2020 CATEGORY SCORES If a company scored C or below, they will not have been scored for management or leadership points (the dark purple line represents this).

A sample of A-list companies from your Activity Group: AmorePacific Corporation Beiersdorf AG Borregaard ASA CDP SCORE REPORT - CLIMATE CHANGE 2023 Avient received an A- which is in the Leadership band. Investors will additionally receive a copy of the CDP Score Report upon request. CATEGORY SCORES CDP SCORE REPORT - CLIMATE CHANGE 2023 If a company scored a C or below, they will not have been scored for Management or Leadership points (the dark purple line represents this).

VERIFICATION OPINION DECLARATION GREENHOUSE GAS EMISSIONS To: The Stakeholders of Avient Corporation Apex Companies, LLC (Apex) was engaged to conduct an independent verification of the greenhouse gas (GHG) emissions reported by Avient Corporation (Avient) for the period stated below. Apex’s sole responsibility was to provide independent verification on the accuracy of the GHG emissions reported, and on the underlying systems and processes used to collect, analyze and review the information. Page 3 Verification Opinion: Based on the verification process and procedures conducted to a limited assurance level of the GHG emissions statement shown above, Apex found no evidence that the GHG emissions statement: • is not materially correct and is not a fair representation of the GHG emissions data and information; and • has not been prepared in accordance with the WRI/WBCSD GHG Protocol Corporate Accounting and Reporting Standard (Scope 1 and 2), and WRI/WBCSD Greenhouse Gas Protocol Corporate Value Chain Accounting and Reporting Standard (Scope 3).

USD C0.5 (C0.5) Select the option that describes the reporting boundary for which climate- related impacts on your business are being reported. No C5.1b (C5.1b) Has your emissions accounting methodology, boundary, and/or reporting year definition changed in the reporting year? Change(s) in methodology, boundary, and/or reporting year definition?

U.S. reporting companies that manufacture products (or have others manufacture products) that contain 3TG metals or their derivatives (tantalum, tin, tungsten and gold) that are necessary to product functionality or production are required to assess their supply chains and report to the SEC on whether those materials are sourced from the Democratic Republic of Congo and adjoining countries. We expect our global supply chain partners to do the same, whether or not they are subject to the reporting requirements of the Act. Avient is equally committed to complying with the reporting obligations under Section 1502 of the Act and the related rule issued by the SEC.