Has an immediate family member who is a current partner of the Company’s internal or external auditor, or who is a current employee of the Company’s internal or external auditor and personally works on the Company’s audit; 2 E. All such actions, interpretations and determinations that are done or made by the Board in good faith will be final, conclusive and binding. 2. Qualification Standards; Composition of the Board Director Independence; Categorical Independence Standards Qualification Criteria Conflicts of Interest Service on Other Boards Change in Director’s Employment Retirement Policy Policy of the Board of Directors Relating to Majority Voting 2.

Issued on 2 August 20212 August 20212 August 20212 August 2021 . 2021-08-02T11:00:37+0800 The Government of the Hong Kong Special Administrative Region NG Ka Hung Paul Digitally signed by Companies Registry

Organic sales grew in all geographic regions with the U.S. and Canada growing at 6%, EMEA at 1%, Asia at 7% and Latin America at 14%.” 2 Commenting on full year 2024 results, Dr. Three Months Ended December 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 48.3 $ 0.52 $ 27.8 $ 0.30 Special items, after-tax (Attachment 3) (18.0) (0.20) 5.4 0.06 Amortization expense, after-tax 14.8 0.17 15.0 0.16 Adjusted net income / EPS $ 45.1 $ 0.49 $ 48.2 $ 0.52 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 169.5 $ 1.84 $ 75.8 $ 0.83 Special items, after-tax (Attachment 3) 15.9 0.17 79.3 0.86 Amortization expense, after-tax 59.5 0.65 61.5 0.67 Adjusted net income / EPS $ 244.9 $ 2.66 $ 216.6 $ 2.36 (1) Per share amounts may not recalculate from figures presented herein due to rounding 8 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended December 31, Year Ended December 31, 2024 2023 2024 2023 Sales $ 746.5 $ 719.0 $ 3,240.4 $ 3,142.8 Cost of sales 487.0 510.1 2,183.7 2,250.3 Gross margin 259.5 208.9 1,056.7 892.5 Selling and administrative expense 173.9 165.8 727.4 695.7 Operating income 85.6 43.1 329.3 196.8 Interest expense, net (25.5) (26.8) (105.6) (115.3) Other income, net 3.2 4.3 1.1 5.8 Income from continuing operations before income taxes 63.3 20.6 224.8 87.3 Income tax (expense) benefit (14.8) 7.0 (54.1) (11.0) Net income from continuing operations 48.5 27.6 170.7 76.3 Income (loss) from discontinued operations, net of income taxes — 0.8 — (0.1) Net income 48.5 28.4 170.7 76.2 Net (income) loss attributable to noncontrolling interests (0.2) 0.2 (1.2) (0.5) Net income attributable to Avient common shareholders $ 48.3 $ 28.6 $ 169.5 $ 75.7 Earnings per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.53 $ 0.30 $ 1.86 $ 0.83 Discontinued operations — 0.01 — — Total $ 0.53 $ 0.31 $ 1.86 $ 0.83 Earnings per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.52 $ 0.30 $ 1.84 $ 0.83 Discontinued operations — 0.01 — — Total $ 0.52 $ 0.31 $ 1.84 $ 0.83 Cash dividends declared per share of common stock $ 0.2700 $ 0.2575 $ 1.0425 $ 1.0000 Weighted-average shares used to compute earnings per common share: Basic 91.4 91.2 91.3 91.1 Diluted 92.2 91.9 92.0 91.8 9 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended December 31, Year Ended December 31, 2024 2023 2024 2023 Cost of sales: Restructuring costs, including accelerated depreciation $ (4.6) $ (2.0) $ 1.0 $ (11.9) Environmental remediation costs (6.8) (17.2) (35.0) (69.7) Reimbursement of previously incurred environmental costs 34.7 1.6 34.7 1.6 Impact on cost of sales 23.3 (17.6) 0.7 (80.0) Selling and administrative expense: Restructuring and employee separation costs (2.6) (1.1) (9.2) (14.9) Legal and other (0.3) (6.1) (10.4) (15.2) Acquisition related costs — (1.3) (2.5) (5.9) Impact on selling and administrative expense (2.9) (8.5) (22.1) (36.0) Impact on operating income 20.4 (26.1) (21.4) (116.0) Interest expense, net - financing costs — (0.1) (2.3) (2.3) Pension and post retirement mark-to-market adjustments and other 3.5 3.8 3.6 3.7 Impact on other income, net 3.5 3.8 3.6 3.7 Impact on income from continuing operations before income taxes 23.9 (22.4) (20.1) (114.6) Income tax (expense) benefit on above special items (5.8) 4.5 6.1 27.7 Tax adjustments(2) (0.1) 12.5 (1.9) 7.6 Impact of special items on net income from continuing operations $ 18.0 $ (5.4) $ (15.9) $ (79.3) Diluted earnings per common share impact $ 0.20 $ (0.06) $ (0.17) $ (0.86) Weighted average shares used to compute adjusted earnings per share: Diluted 92.2 91.9 92.0 91.8 (1) Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; costs incurred directly in relation to acquisitions or divestitures; employee separation costs resulting from personnel reduction programs, plant realignment costs, executive separation agreements; asset impairments; settlement gains or losses and mark-to- market adjustments associated with gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; one-time, non-recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results 2) Tax adjustments include the net tax impact from non-recurring income tax items and certain adjustments to uncertain tax position reserves and valuation allowances. 10 Attachment 4 Avient Corporation Condensed Consolidated Balance Sheets (Unaudited) (In millions) Year Ended December 31, 2024 2023 ASSETS Current assets: Cash and cash equivalents $ 544.5 $ 545.8 Accounts receivable, net 399.5 399.9 Inventories, net 346.8 347.0 Other current assets 131.3 114.9 Total current assets 1,422.1 1,407.6 Property, net 955.3 1,028.9 Goodwill 1,659.7 1,719.3 Intangible assets, net 1,450.4 1,590.8 Operating lease assets, net 89.1 65.3 Deferred income tax assets 81.3 92.3 Other non-current assets 153.2 64.3 Total assets $ 5,811.1 $ 5,968.5 LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Short-term and current portion of long-term debt $ 7.7 $ 9.5 Accounts payable 417.4 432.3 Accrued expenses and other current liabilities 331.0 331.8 Total current liabilities 756.1 773.6 Non-current liabilities: Long-term debt 2,059.3 2,070.5 Deferred income taxes 260.4 281.6 Other non-current liabilities 405.7 504.8 Total non-current liabilities 2,725.4 2,856.9 SHAREHOLDERS' EQUITY Avient shareholders’ equity 2,313.8 2,319.2 Noncontrolling interest 15.8 18.8 Total equity 2,329.6 2,338.0 Total liabilities and equity $ 5,811.1 $ 5,968.5 11 Attachment 5 Avient Corporation Condensed Consolidated Statements of Cash Flows (Unaudited) (In millions) Year Ended December 31, 2024 2023 Operating activities Net income $ 170.7 $ 76.2 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 179.7 188.8 Increase in environmental insurance receivable (34.0) — Deferred income tax benefit (23.8) (61.3) Share-based compensation expense 15.4 13.2 Changes in assets and liabilities, net of the effect of acquisitions: (Increase) decrease in accounts receivable (15.2) 38.6 (Increase) decrease in inventories (13.7) 24.3 Increase (decrease) in accounts payable 0.3 (22.2) Decrease in pension, retirement benefits and deferred compensation (34.3) (8.7) Taxes paid on gain on sale of business — (104.1) (Decrease) increase in environmental obligations (11.2) 38.9 Accrued expenses and other assets and liabilities, net 22.9 17.9 Net cash provided by operating activities 256.8 201.6 Investing activities Capital expenditures (121.9) (119.4) Net proceeds from divestiture — 7.3 Proceeds from plant closures 3.4 7.6 Other investing activities (2.1) 10.3 Net cash used by investing activities (120.6) (94.2) Financing activities Proceeds from long-term borrowings 650.0 — Payments on long-term borrowings (660.9) (105.8) Cash dividends paid (94.0) (90.2) Payments on withholding tax on share awards (6.4) (3.4) Debt financing costs (9.6) (2.3) Net cash used by financing activities (120.9) (201.7) Effect of exchange rate changes on cash (16.6) (1.0) Decrease in cash and cash equivalents (1.3) (95.3) Cash and cash equivalents at beginning of year 545.8 641.1 Cash and cash equivalents at end of year $ 544.5 $ 545.8 12 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.

Of those collected, 81% of the suppliers reported an EcoVadis medal rating in their overall scorecard evaluation. NOx: 13.40 MT 2. PSIC: 0 2.

CESA Fiber Additives for Heat Preservation ProductBulletin_CN4.27-2 CESA™ 红外蓄热纤维添加剂 1.844.4AVIENT www.avient.com 版权所有©2021 埃万特公司。

Versaflex CE TPEs for 5G Application Bulletin_CN8.26-2 VERSAFLEX™ CE TPEs 实现 5G 信号高速传输 应用公告 主要特性 为实现信号高速传输和连接提供卓越的介电性 能及较低的信号损耗 与标准 TPEs 相比，具有更低的介电常数（Dk） 和介电损耗（Df） 物理性能优越、耐紫外线、美观 行业&应用 Versaflex™ CE 3140 TPEs 专为手机保护壳研制， 最大限度地减少信号损耗，实现 5G场景中终端设 备的高速连接，为消费者提供无缝使用体验。

Figure 2. Figure 2. Increase machine tonnage to a minimum of 2 tons/in2

INVESTOR DAY O R L A N D O , F L O R I D A | M A Y 2 0 1 8 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. I N V E S T O R D A Y A G E N D A M A Y 1 0 , 2 0 1 8 PolyOne Corporation 5 8:00 WELCOME BREAKFAST 9:00 Introduction: Bob Patterson 9:45 Investing for Growth: Michael Garratt Commercial Resources Innovation Service 10:15 SEGMENT REVIEWS PolyOne Distribution: Scott Horn Specialty Engineered Materials: Michael Garratt BREAK (10 MINUTES) SEGMENT REVIEWS (CONTINUED) Performance Products & Solutions: Don Wiseman Color, Additives & Inks: Mark Crist 11:40 Mergers & Acquisitions: Joel Rathbun 12:00 Financial Review: Brad Richardson 12:20 Conclusion/Q&A: Bob Patterson 1:00 LUNCH Bradley C. Leverage PolyOne’s global reach Phase 1 Phase 2 Phase 3 18-20% operating margins Invest in commercial resources I N V E S T - T O - G R O W P R O O F O F P E R F O R M A N C E PolyOne Corporation 98 Commercial Operating Income Operating 243 335 $36 $90 Established Acquisitions (> 7 years) + 40% + 150% + 900 bps I N V E S T - T O - G R O W P R O O F O F P E R F O R M A N C E PolyOne Corporation 99 Commercial Operating Income (millions) 53 109 187 214 3 12 $12 $45 $22 $42 $2 Acquisition #1 (10 years) Acquisition #3 (7 years) Acquisition #2 (9 years) EBITDA Multiple 10.5x 3.0x 11.1x 7.6x 4.9x 2.8x 23% 17% 21% Return on Sales I N V E S T - T O - G R O W D R I V I N G T H E F U T U R E PolyOne Corporation 100 Commercial Operating Income Operating 44 65 $0 $0 0% 0% Advanced Composites I N V E S T - T O - G R O W D R I V I N G T H E F U T U R E PolyOne Corporation 101 Commercial Operating Income Operating 96 141 $16 $18 $36 11% 12% 18-20% Recent Color Acquisitions PolyOne Corporation 102 Average Company Size # of Possibilities Rationale 250 • Local to regional footprint • Niche technology focus • Concentrated customer base $50M–$200M 150 • Regional to global footprint • 1–3 specialty technologies • Diversified customer base >$200M 30 • Global footprint with local service • Diverse specialty technologies • Highly diversified customer & market portfolio S T R O N G P I P E L I N E D R I V E N B Y F R A G M E N T E D M A R K E T S U M M A R Y PolyOne Corporation 103 Proven track record with specialty acquisitions using invest-to-grow strategy Our approach to integration differentiates PolyOne in a competitive M&A market Trusted brand and reputation Buyer of choice Robust pipeline with a range of opportunities that fit our strategy FINANCIAL REVIEW B R A D R I C H A R D S O N PolyOne Corporation 104 PolyOne Corporation 105 A D J U S T E D E P S E X P A N S I O N 2009 2010 2011 2012 2013 2014 2015 2016* 2017* C O N S E C U T I V E Y E A R S $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 *Pro Forma for sale of DSS PolyOne Corporation 106 S T R A T E G I C C A S H D E P L O Y M E N T ORGANIC GROWTH Investing in R&D and capacity 11 Maintenance 40% Strategic Growth Investments 60% Capital Expenditures M&A OPPORTUNITIES Continued pursuit of strategic bolt on acquisitions that expand specialty offerings 2 SHAREHOLDER RETURN Dividends and share buybacks3 Over $400 million M&A Spending Since 2014 $809 million Share Repurchases 2011-Q1 2018 60% Increase in annual dividend over next three years 2011 2013 2015 2017 “Where we were” “Where we are” ROIC 5.0% 14.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% Specialty Engineered Materials 1.1% 12.1% Performance Products & Solutions 4.3% 10.7% Distribution 2.6% 6.3% P R O O F O F P E R F O R M A N C E E X P A N D I N G M A R G I N S & R O I C PolyOne Corporation 107 I N V E S T M E N T I N COMMERCIAL RESOURCES D R I V I N G R E S U L T S PolyOne Corporation 108 Largest organic revenue growth since recession $2.9 $2.9 $3.2 2015 2016 2017 Revenue in billions of $ Total + 10% Organic + 7% S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 109 Double digit annual EPS growth Expand specialty portfolio with strategic acquisitions Innovate and develop new technologies and services Repurchase 600K-1M shares annually Increase commercial resources 6-8% annually Double acquired company margins Enhance efficiencies through Lean Six Sigma and commercial excellence R O I C D R I V E S S H A R E H O L D E R R E T U R N PolyOne Corporation 110 R O I C D R I V E S S H A R E H O L D E R R E T U R N PolyOne Corporation 111 $570 $1,650 $1,750 $2,000 ROIC Invested Capital Improving ROIC + Expanding Invested Capital = Outperforming the Market CONCLUSION B O B P A T T E R S O N PolyOne Corporation 112 1 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

Microsoft Word - 55324 Letter of Conformity RCMS Option 2 .docx ABS Quality Evaluations Letter Of Conformity This is to confirm that the Environment, Health, Safety and Security Management System of: PolyOne Corporation 2400 East Devon Elk Grove, IL 60007 U.S.A. WITH ADDITIONAL FACILITIES LISTED ON THE ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RCMS®:2013 (Option 2) The Environment, Health, Safety and Security Management System is applicable to: Design and Manufacture of Colorants for Plastics Certificate No: 55324 Effective Date 21 December 2017 ABS Quality Evaluations, Inc. 16855 Northchase Drive, Houston, TX 77060, U.S.A.