Avient acquired the Clariant Color business on 2020年7月1日 (the “Acquisition Date”). To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. APPENDIX Performance Additives 15% Pigments 15% TiO2 12% Dyestuffs 4%Polyethylene 10% Nylon 5% Polypropylene 4% Other Raw Materials 29% Styrenic Block Copolymer 6% ~1/3 hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 27 • Significant raw material price inflation and tight inventory continued in Q3 2021 o Average cost of hydrocarbon based materials was up 65% year-over-year and 10% sequentially o Average cost of non-hydrocarbon based materials was up 20% year-over-year and 3% sequentially • Additionally, we continued to experience other supply chain challenges during Q3 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2020 pro forma purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 51% EMEA 25% Asia 16% Latin America 8% 2021 YTD SEGMENT, END MARKET AND GEOGRAPHY 29 GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 19% Industrial 16% Building and Construction 10% Telecommunications 4% Energy 2% END MARKET REVENUE (1) Total company sales and EBITDA of $3,617M and $455M, respectively, include intercompany sales eliminations and corporate costs All charts reflect YTD financials through September 30 $1,820M $321M $691M $127M $1,206M $72M Sales Adjusted EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $455M$3,617M (1) Transportation 12% Healthcare 14% Packaging 34% Consumer 21% Healthcare 7% Industrial 16% Building & Construction 10% Transportation 9% Energy 2% Telecommunications 1% C O L O R , A D D I T I V E S & I N K S 2 0 2 1 Y T D R E V E N U E | $ 1 . 8 B I L L I O N US & Canada 31% EMEA 42% Asia 21% Latin America 6% END MARKET REGION 30 All charts reflect 2021 YTD financials through September 30 S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Consumer 28% Healthcare 10% Packaging 6% Telecommunications 16% Transportation 12% Industrial 11% Building & Construction 10% Energy 7% 2 0 2 1 Y T D R E V E N U E | $ 6 9 1 M I L L I O N END MARKET US & Canada 55% EMEA 25% Asia 20% REGION 31 All charts reflect 2021 YTD financials through September 30 D I S T R I B U T I O N Healthcare 26% Consumer 22% Packaging 6% Industrial 20% Transportation 16% Building and Construction 8% Energy 1% Telecommunications 1% US & Canada 81% Asia 4% Latin America 15% END MARKET REGION K E Y S U P P L I E R S 2 0 2 1 Y T D R E V E N U E | $ 1 . 2 B I L L I O N 32 All charts reflect 2021 YTD financials through September 30 T O T A L C O M PA N Y R E G I O N A L S A L E S B Y E N D M A R K E T Packaging 30% Consumer 27% Healthcare 12% Industrial 14% Building & Construction 5% Telecommunications 2% Energy 2% Asia (16% of sales) Transportation 8% Packaging 31% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 12% Telecommunications 5% Energy 4% EMEA (25% of sales) Transportation 12% 33 Consumer 25% Healthcare 19% Packaging 10% Industrial 17% Building & Construction 10% Telecommunications 4% Energy 2% US & Canada (51% of sales) Transportation 13% Packaging 42% Consumer 33% Healthcare 3% Industrial 10% Building & Construction 5% Telecommunications 1% LATAM (8% of sales) Transportation 6% All charts reflect 2021 YTD financials through September 30 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Three Months Ended 2021年9月30日 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating income $ 78.7 $ 20.0 $ 98.7 Income from continuing operations before income taxes $ 61.1 $ 19.9 $ 81.0 Income tax expense - GAAP (8.5) — (8.5) Income tax impact of special items — (4.6) (4.6) Tax adjustments — (3.6) (3.6) Net income attributable to noncontrolling interests 0.3 — 0.3 Net income from continuing operations attributable to Avient shareholders $ 52.9 $ 11.7 $ 64.6 Net income / EPS $ 0.57 $ 0.13 $ 0.70 Weighted-average diluted shares 92.2 92.2 92.2 Three Months Ended 2020年9月30日 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating income $ 33.5 $ 40.4 $ 73.9 Income from continuing operations before income taxes $ 5.3 $ 50.0 $ 55.3 Income tax expense - GAAP (2.7) — (2.7) Income tax impact of special items — (12.7) (12.7) Tax adjustments — 3.0 3.0 Net income attributable to noncontrolling interests (0.9) — (0.9) Net income from continuing operations attributable to Avient shareholders $ 1.7 $ 40.3 $ 42.0 Net income / EPS $ 0.02 $ 0.44 $ 0.46 Weighted-average diluted shares 91.9 91.9 91.9 1 Three Months Ended September 30, Three Months Ended Nine Months Ended Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2021 2020 2021年6月30日 2021年9月30日 2020 2019 2018 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 69.4 $ 201.7 $ 133.8 $ 75.7 $ 87.4 Income tax expense 8.5 2.7 20.4 51.8 5.2 33.7 14.4 Interest expense 19.0 29.7 19.5 57.8 74.6 59.5 62.8 Debt extinguishment cost — — — — — — 1.1 Depreciation and amortization from continuing operations 36.8 36.5 33.8 107.7 115.0 78.1 72.6 EBITDA $ 116.9 71.5 $ 143.1 $ 419.0 $ 328.6 $ 247.0 $ 238.3 Special items, before tax 19.9 50.0 14.2 36.5 66.2 61.7 59.5 Interest expense included in special items — (9.6) — — (10.1) — — Depreciation and amortization included in special items (0.9) (1.3) 1.4 (0.1) (3.2) — (3.0) Adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 381.6 $ 308.7 $ 294.8 Clariant MB pro forma adjustments(1) — — — — 75.1 133.2 141.5 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 456.7 $ 441.9 $ 436.3 (1) Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects to the financing for the acquisition 2 Reconciliation of EBITDA by Segment Three Months Ended September 30, Nine Months Ended September 30, Year Ended 2021年12月31日 2020 2021 2020 2019 2018 Sales: Color, Additives and Inks $ 586.6 $ 493.8 $ 1,820.3 $ 1,502.9 $ 1,003.8 $ 1,046.5 Specialty Engineered Materials 233.6 174.1 690.7 708.8 745.7 645.8 Distribution 438.8 276.9 1,205.9 1,110.3 1,192.2 1,265.4 Corporate and eliminations (39.2) (20.3) (99.6) (79.9) (79.0) (76.7) Sales $ 1,219.8 $ 924.5 $ 3,617.3 $ 3,242.1 $ 2,862.7 $ 2,881.0 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 31.7 24.7 103.2 94.4 83.7 72.3 Distribution 23.8 17.5 71.5 69.5 75.4 71.5 Corporate and eliminations (43.6) (59.2) (109.4) (155.4) (149.7) (123.7) Operating income $ 78.7 $ 33.5 $ 307.2 $ 189.3 $ 156.8 $ 178.6 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 24.3 $ 12.1 $ (12.9) Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 75.1 $ 42.7 $ 44.3 Specialty Engineered Materials 7.9 7.5 23.8 30.0 29.5 23.2 Distribution 0.2 0.2 0.6 0.7 0.5 0.7 Corporate and eliminations 2.1 2.5 4.1 9.2 5.4 4.4 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 115.0 $ 78.1 $ 72.6 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 39.6 32.2 127.0 124.4 113.2 95.5 Distribution 24.0 17.7 72.1 70.2 75.9 72.2 Corporate and eliminations (41.5) (56.7) (105.3) (146.2) (144.3) (119.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 17.6 % 15.2 % 14.8 % Distribution 5.5 % 6.4 % 6.0 % 6.3 % 6.4 % 5.7 % 3 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Year Ended 2020年12月31日 2019 2018 Sales: Color, Additives and Inks $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(1) 540.4 1,118.6 1,209.8 Pro forma sales $ 2,043.3 $ 2,122.4 $ 2,256.3 Operating income: Color, Additives and Inks $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(1) 45.0 72.9 80.3 Pro forma operating income $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(1) 30.1 60.3 61.2 Pro forma depreciation & amortization $ 105.2 $ 103.0 $ 105.5 EBITDA Color, Additives and Inks $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(1) 75.1 133.2 141.5 Pro forma EBITDA $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 16.2 % 15.2 % 15.3 % (1) - Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects of the financing for the acquisition 4 Year Ended 2020年12月31日 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient Sales $ 3,242.1 $ — $ 3,242.1 $ 540.4 $ 3,782.5 Operating income $ 189.3 $ 73.7 $ 263.0 $ 45.0 $ 308.0 Interest expense, net (74.6) 10.1 (64.5) (18.1) (82.6) Other income, net 24.3 (17.6) 6.7 — 6.7 Income taxes (5.2) (41.4) (46.6) (6.2) (52.8) Net income attributable to noncontrolling interests (1.8) — (1.8) — (1.8) Net income from continuing operations attributable to Avient shareholders $ 132.0 $ 24.8 $ 156.8 $ 20.7 $ 177.5 Weighted average diluted shares 90.6 Impact to diluted shares from January 2020 equity offering 1.5 Pro forma weighted average diluted shares 92.1 Pro forma adjusted EPS $ 1.93 (1) - Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects of the financing for the acquisition Year Ended 2019年12月31日 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient Sales $ 2,862.7 $ — $ 2,862.7 $ 1,118.6 $ 3,981.3 Operating income $ 156.8 $ 71.7 $ 228.5 $ 72.9 $ 301.4 Interest expense, net (59.5) — (59.5) (33.4) (92.9) Other income, net 12.1 (10.0) 2.1 — 2.1 Income taxes (33.7) (5.9) (39.6) (9.1) (48.7) Net income attributable to noncontrolling interests (0.2) — (0.2) — (0.2) Net income from continuing operations attributable to Avient shareholders $ 75.5 $ 55.8 $ 131.3 $ 30.4 $ 161.7 Weighted average diluted shares 77.7 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 93.0 Pro forma adjusted EPS $ 1.74 (1) - Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects of the financing for the acquisition 5 AVNT Q3 2021 Earnings Presentation.pdf AVNT Q3 2021 Earnings Presentation.pdf Final 10.27 606pm Q3 21 IR Deck Version v1.pdf

Pro Forma The Company acquired the Clariant Masterbatch business (“CMB”) on 2020年7月1日 (the “Acquisition Date”). 2) Tax adjustments include the net tax benefit/(expense) from one-time income tax items, the set-up or reversal of uncertain tax position reserves and deferred income tax valuation allowance adjustments. 9 Attachment 4 Avient Corporation Condensed Consolidated Balance Sheets (In millions) (Unaudited) 2021年3月31日 2020年12月31日 ASSETS Current assets: Cash and cash equivalents $ 594.5 $ 649.5 Accounts receivable, net 642.2 516.6 Inventories, net 357.0 327.5 Other current assets 122.7 108.5 Total current assets 1,716.4 1,602.1 Property, net 675.5 694.9 Goodwill 1,281.9 1,308.1 Intangible assets, net 973.3 1,008.5 Operating lease assets, net 80.9 80.9 Other non-current assets 181.4 176.0 Total assets $ 4,909.4 $ 4,870.5 LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Short-term and current portion of long-term debt $ 18.8 $ 18.6 Accounts payable 529.6 471.7 Current operating lease obligations 24.3 25.1 Accrued expenses and other current liabilities 290.9 285.6 Total current liabilities 863.6 801.0 Non-current liabilities: Long-term debt 1,852.7 1,854.0 Pension and other post-retirement benefits 111.3 115.0 Non-current operating lease obligations 56.8 56.0 Other non-current liabilities 303.0 332.8 Total non-current liabilities 2,323.8 2,357.8 SHAREHOLDERS' EQUITY Avient shareholders’ equity 1,707.0 1,697.1 Noncontrolling interest 15.0 14.6 Total equity 1,722.0 1,711.7 Total liabilities and equity $ 4,909.4 $ 4,870.5 10 Attachment 5 Avient Corporation Condensed Consolidated Statements of Cash Flows (Unaudited) (In millions) Three Months Ended 2021年3月31日 2020 Operating Activities Net income $ 79.7 $ 32.8 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 36.6 19.9 Accelerated depreciation and amortization 0.5 — Share-based compensation expense 2.7 2.1 Changes in assets and liabilities, net of the effect of acquisitions: Increase in accounts receivable (137.6) (56.9) Increase in inventories (35.1) (13.0) Increase in accounts payable 67.3 44.6 Decrease in pension and other post-retirement benefits (7.1) (3.2) Increase in post-acquisition earnout liabilities — 1.0 Decrease in accrued expenses and other assets and liabilities, net (3.4) (19.1) Payment of post-acquisition date earnout liability — (21.0) Net cash provided (used) by operating activities 3.6 (12.8) Investing activities Capital expenditures (16.5) (11.1) Net proceeds from divestiture — 7.1 Net proceeds (used) provided by other assets (2.0) 5.2 Net cash (used) provided by investing activities (18.5) 1.2 Financing activities Purchase of common shares for treasury (4.2) (13.6) Cash dividends paid (19.5) (15.6) Repayment of long-term debt (2.3) (2.0) Payments of withholding tax on share awards (3.1) (1.3) Equity offering proceeds, net of underwriting discount and issuance costs — 496.3 Payment of acquisition date earnout liability — (32.9) Net cash (used) provided by financing activities (29.1) 430.9 Effect of exchange rate changes on cash (11.0) (3.8) (Decrease) increase in cash and cash equivalents (55.0) 415.5 Cash and cash equivalents at beginning of year 649.5 864.7 Cash and cash equivalents at end of period $ 594.5 $ 1,280.2 11 Attachment 6 Avient Corporation Business Segment Operations (Unaudited) (In millions) Operating income and earnings before interest, taxes, depreciation and amortization (EBITDA) at the segment level does not include: special items as defined in Attachment 3; corporate general and administration costs that are not allocated to segments; intersegment sales and profit eliminations; share-based compensation costs; and certain other items that are not included in the measure of segment profit and loss that is reported to and reviewed by the chief operating decision maker. Three Months Ended 2021年3月31日 2020 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results Income from continuing operations before income taxes $ 102.6 $ 2.4 $ 105.0 $ 45.0 $ 9.6 $ 54.6 Income tax expense - GAAP (22.9) — (22.9) (11.9) — (11.9) Income tax impact of special items (Attachment 3) — (0.9) (0.9) — (2.0) (2.0) Tax adjustments (Attachment 3) — 1.1 1.1 — 1.0 1.0 Income tax (expense) benefit $ (22.9) $ 0.2 $ (22.7) $ (11.9) $ (1.0) $ (12.9) Effective Tax Rate(1) 22.3 % 21.6 % 26.5 % 23.7 % (1) Rates may not recalculate from figures presented herein due to rounding 13 The following pro forma adjustments are referenced by management to provide comparable business performance by incorporating the Clariant Masterbatch business in periods prior to the acquisition date (2020年7月1日).

If Buyer has a dispute with respect to an invoice, Buyer must notify Seller within seven (7) business days after the date of invoice. Any times or dates for delivery communicated by Seller (including those contained in Seller’s order confirmation) are estimates only and are not terms of the sale. Unless Seller and Buyer have expressly agreed to a firm delivery date term in a single writing signed by both parties, delay in delivery of any Products shall not relieve Buyer of its obligation to accept delivery thereof.

DATE 04/23/2020 DOCUMENT ID 202011402526 NAME RESERVATION (NRO) DESCRIPTION FILING 39.00 EXPED 100.00 CERT 0.00 COPY 0.00 Receipt Effective Date: 04/23/2020 DOC ID ----> 202018203934 180 East Broad Street, 16th Floor Columbus, OH 43215 (877) 767-6446 | (614) 466-2655 info@OhioSecretaryofState.gov www.OhioSecretaryofState.gov 2020年6月22日 CT Corporation System Attn: Ken Brown 4400 Easton Common Way, Suite 125 Columbus, OH 43219 Re: Preclearance of Certificate of Amendment Dear: Mr. NOW, THEREFORE, BE IT RESOLVED, that, effective as of the time and date that the applicable certificate is accepted for filing by the Ohio Secretary of State (the “Effective Time”), the name of the Company shall be changed from “PolyOne Corporation” to “Avient Corporation.”

Certificate of Amendment Loi canadienne sur les sociétés par actionsCanada Business Corporations Act Certificat de modification Avient Colorants Canada Inc. 942266-8 Corporate name / Dénomination sociale Corporation number / Numéro de société Raymond Edwards Date of amendment (YYYY-MM-DD) Date de modification (AAAA-MM-JJ) Director / Directeur 2021-01-15 I HEREBY CERTIFY that the articles of the above-named corporation are amended under section 178 of the Canada Business Corporations Act as set out in the attached articles of amendment.

Limited PO Box 2137, Jeddah 22758, Saudi Arabia Has been assessed and found to meet the requirements of ISO 45001:2018 This certificate is valid for the following scope of operations: Production and Supply of Color and Additive Master Batches Authorised by: Stan Wright Director Date of Certificate Issue: 30 December 2021 Certificate Valid Until: 29 December 2024 Recertification audit before 30 November 2024.

Fearon Director Date: 2013年2月12日 /S/ GREGORY J. Goff Director Date: 2013年2月12日 /S/ GORDON D. Powell Director Date: 2013年2月12日 /S/ FARAH M.

GOFF Director Date: 2018年2月15日 Gregory J. JELLISON Director Date: 2018年2月15日 William R. PREETE Director Date: 2018年2月15日 Kerry J.

https://www.avient.com/investors https://edge.media-server.com/mmc/p/yrq7mgm9 https://edge.media-server.com/mmc/p/yrq7mgm9 https://www.avient.com/investors 3 Full Year Comparisons Pro Forma for Acquisition of Clariant’s Color Business The company acquired Clariant’s color (“Clariant Color”) business on 2020年7月1日 (the “Acquisition Date”). Three Months Ended 2021年9月30日 2020 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results $ 61.1 $ 19.9 $ 81.0 $ 5.3 $ 50.0 $ 55.3 Income tax expense - GAAP (8.5) — (8.5) (2.7) — (2.7) Income tax impact of special items (Attachment 3) — (4.6) (4.6) — (12.7) (12.7) Tax adjustments (Attachment 3) — (3.6) (3.6) — 3.0 3.0 Income tax (expense) benefit $ (8.5) $ (8.2) $ (16.7) $ (2.7) $ (9.7) $ (12.4) Effective Tax Rate(1) 14.1 % 20.8 % 51.9 % 22.7 % (1) Rates may not recalculate from figures presented herein due to rounding 14 Nine Months Ended 2021年9月30日 2020 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results $ 253.5 $ 36.5 $ 290.0 $ 81.6 $ 62.0 $ 143.6 Income tax expense - GAAP (51.8) — (51.8) (22.5) — (22.5) Income tax impact of special items (Attachment 3) — (8.9) (8.9) — (15.4) (15.4) Tax adjustments (Attachment 3) — (1.6) (1.6) — 4.9 4.9 Income tax (expense) benefit $ (51.8) $ (10.5) $ (62.3) $ (22.5) $ (10.5) $ (33.0) Effective Tax Rate(1) 20.5 % 21.5 % 27.6 % 23.0 % (1) Rates may not recalculate from figures presented herein due to rounding The following pro forma adjustments are referenced by management to provide comparable business performance by incorporating the Clariant Masterbatch business in periods prior to the acquisition date (2020年7月1日). Reconciliation of Pro Forma Adjusted Earnings per Share: Nine Months Ended 2020年9月30日 Year Ended 2020年12月31日 Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 132.0 Special items, after tax 42.0 24.8 Adjusted net income from continuing operations excluding special items 99.8 156.8 Clariant MB pro forma adjustments to net income from continuing operations(2) 20.7 20.7 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 120.5 $ 177.5 Weighted average diluted shares 90.7 90.6 Pro forma impact to diluted shares from January 2020 equity offering(2) 2.9 1.5 Pro forma weighted average diluted shares 93.6 92.1 Adjusted EPS - excluding special items pro forma for Clariant MB acquisition $ 1.29 $ 1.93 (2) Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects to the financing for the acquisition 15 Nine Months Ended 2020年9月30日 Reconciliation of Pro Forma Adjusted Earnings per Share: Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(2) Pro Forma Adjusted Avient Sales $ 2,245.1 $ — $ 2,245.1 $ 540.5 $ 2,785.6 Operating income $ 124.3 $ 59.1 $ 183.4 $ 45.0 $ 228.4 Interest expense, net (55.3) — (55.3) (18.1) (73.4) Pension settlement gain and mark-to-market adjustment — (6.9) (6.9) — (6.9) Other income, net 12.6 0.3 12.9 — 12.9 Income taxes (22.5) (10.5) (33.0) (6.2) (39.2) Net income attributable to noncontrolling interests (1.3) — (1.3) — (1.3) Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 42.0 $ 99.8 $ 20.7 $ 120.5 Weighted average diluted shares 90.7 Impact to diluted shares from January 2020 equity offering 2.9 Pro forma weighted average diluted shares 93.6 Pro forma adjusted EPS $ 1.29 (2) Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects to the financing for the acquisition 16 Reconciliation of EBITDA by Segment Three Months Ended September 30, Nine Months Ended 2021年9月30日 2020 2021 2020 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 123.3 Specialty Engineered Materials 31.7 24.7 103.2 64.0 Distribution 23.8 17.5 71.5 51.5 Corporate and eliminations (43.6) (59.2) (109.4) (114.5) Operating income $ 78.7 $ 33.5 $ 307.2 $ 124.3 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 12.6 Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 48.0 Specialty Engineered Materials 7.9 7.5 23.8 22.7 Distribution 0.2 0.2 0.6 0.4 Corporate and eliminations 2.1 2.5 4.1 6.2 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 77.3 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 171.3 Specialty Engineered Materials 39.6 32.2 127.0 86.7 Distribution 24.0 17.7 72.1 51.9 Corporate and eliminations (41.5) (56.7) (105.3) (108.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.5 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 16.7 % Distribution 5.5 % 6.4 % 6.0 % 6.4 % 17 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Nine Months Ended 2020年9月30日 Sales: Color, Additives and Inks $ 977.1 Clariant MB pro forma adjustments(2) 540.5 Pro forma sales $ 1,517.6 Operating income: Color, Additives and Inks $ 123.3 Clariant MB pro forma adjustments(2) 45.0 Pro forma operating income $ 168.3 Depreciation & amortization: Color, Additives and Inks $ 48.0 Clariant MB pro forma adjustments(2) 30.1 Pro forma depreciation & amortization $ 78.1 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 171.3 Clariant MB pro forma adjustments(2) 75.1 Pro forma EBITDA $ 246.4 Pro forma EBITDA as a % of Sales 16.2 % (2) Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects to the financing for the acquisition Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA: 2021 2020 2021 2020 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 201.7 $ 59.1 Income tax expense 8.5 2.7 51.8 22.5 Interest expense 19.0 29.7 57.8 55.3 Depreciation and amortization from continuing operations 36.8 36.5 107.7 77.3 EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 Special items, before tax 19.9 50.0 36.5 62.0 Interest expense included in special items — (9.6) — (10.1) Depreciation and amortization included in special items (0.9) (1.3) (0.1) (2.5) Adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 263.6 Clariant MB pro forma adjustments(2) — — — 75.1 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 338.7 (2) Pro forma adjustments for the periods prior to the acquisition date (2020年7月1日) and to give effects to the financing for the acquisition NEWS RELEASE Attachment 1

The payment date will be a date in 2026 determined by the Compensation Committee (or its authorized delegate), which will occur no later than March 15, 2026. Kunkle was employed by Avient from the original grant date of the award through 2023年11月1日 (the modification date). Kunkle was employed by Avient from the original grant date of the award through 2023年11月1日 (the modification date).