See instructions. 6 City, state, and ZIP code Requester’s name and address (optional) 7 List account number(s) here (optional) Part I Taxpayer Identification Number (TIN) Enter your TIN in the appropriate box.

Administration, Site management, Manufacture, Laboratory, Procurement, 27 Avenida 34–11, Zona 12 1012 Parque Global Guatemala WA-6 Renaissance Industrial & Warehousing Complex, Vashere Maharashtra 400607 India Survey No. 344 / 1–3 Sakarda Bhadarwa Road Taluka Savli Vadodara District 39178 India Shed No 18–22, GIDC Estate Kalol Gujarat 389330 India Page 2 of 4 P.T.

Gordon Composites laminates are available in an assortment of colors, inlay options, and lengths from 6" to 120", or rolls up to 1500 feet.

https://supplier.coupa.com/help/how-to-set-up-e-invoicing/ 6 In the Subtotal section, you can enter values and select tax rates for shipping, handling, and miscellaneous costs.

index 9/3. 2014 '08 Manufacture of other organic basic chemicals 9/4. 2016 '08 Manufacture of plastics in primary forms 9/5. 4675 '08 Wholesale of chemical products 9/6. 4676 '08 Wholesale of other intermediate products 9/7. 4677 '08 Wholesale of waste and scrap 11.

測試方法：FTTS-FA-010-2007 4.2 設備：紅外線熱像儀 熱源：500W鹵素燈 熱輻射距離：100 cm 加入Cesa紅外蓄熱纖維添加劑 加熱10分鐘後表面溫度：33.85°C 溫度變化：+13.6°C 測試方法 0.9 9°C 8.9°C 5.6°C 0.625 +12.9% +13.6% +1.7% www.avient.com 標準要求 測試結果 GB/T 30127 遠紅外線性能 GB/T 18319-2019 光蓄熱性能 FTTS-FA-010 紅外線性能及蓄熱升溫 GB/T 11048-2008 Method A 熱舒適性 熱阻性能 單位：CLO 人體生理實驗 遠紅外線發射率 ≥0.88 (5-14um) （測試溫度:34°C） 遠紅外線輻射溫升值 ≥1.4°C 最高允許溫升值 ≥6°C 平均溫升值 ≥4.4°C（20分鐘） 平均發射率 ≥ 0.8 (2-22um) （測試溫度: 25°C) 0.81 規定加熱ΔT ≥ 0.5°C （相對於標準） +5.34°C (ΔT) 裸體：0 內褲：0.04 T恤：0.09 厚毛衣：0.35 冬季大衣：0.7 上述所有資料均為參考值 血流量 血流速 血氧濃度（%SpO2） 請聯絡您的埃萬特業務代表以了解 您所在國家或地區是否有售。

KEY CHARACTERISTICS • UL 94 V-2, V-0, 5VA ratings and elevated RTI ratings • GWFI (IEC 60695-11-10) up to 960°C • Comparative Tracking Index (CTI) PLC 0, 600V ratings • Injection molding and extrusion grades • Non-halogen grades available • Low dielectric performance with selected formulations • Good recyclability • Colorable MARKETS & APPLICATIONS Applications that require flame retardant performance including: • Transportation: Interior components, seat components, door panels, aircraft interiors, railway interiors, boat interiors • Construction & Building Materials: Cable insulation, pipes and fittings, insulation materials • Consumer – Appliance casings, housings, covers, fume hoods, battery packages, furniture • Industrial Equipment: Machine housings • Energy, Electrical & Electronic, E-Mobility: Battery frames, electrical housings, connectors • Telecommunication: Cable management • Packaging: Transportation of sensitive goods • Healthcare: Medical device housings and components PRODUCT BULLETIN MAXXAM FR FLAME RETARDANT POLYOLEFIN FORMULATIONS Non-halogenated Halogenated PP Homopolymer Copolymer Homopolymer Copolymer Unit Unfilled Glass Fiber Mineral Unfilled Glass Fiber Mineral Unfilled Glass Fiber Mineral Unfilled Glass Fiber Mineral Characteristic Talcum Talcum Talcum Talcum Reinforcement Mass-% 0 5–30 5–30 0 20–30 5-20 0 5–30 5–20 0 5–30 5–20 Colorable – ++ ++ + ++ ++ + + + + + + + Density g/cm3 0,9–1,08 1,28–1,37 0,98–1,55 0,92–1,06 1,25–1,35 0,95–1,28 0,94–1,04 1,3–1,55 1,01–1,42 0,96–1,01 0,94–1,58 0,95–1,46 Tensile Strength MPa 25–30 30–70 25–35 16–22 40–65 15–25 25-–35 30–70 25–35 20–24 20–55 -25 E-Modulus (Tensile) MPa 1600–2500 2500–8200 2500–4000 800–1200 2000–8000 1600–3000 1300–2000 3000–8900 1900–3500 1000–1400 1200–7500 1500–3000 Izod Impact 23°C notched % 2,0–4,5 3,5–7,5 2,5–4,5 5–40 2,5–18 2,5–6 2,5–4,5 3,5–6,0 3,0–7,0 4,0–40 2,5–16 2,5–10 Max.

Check one box below and provide information as required: Complete the following information: Form 540 Prescribed by: POLYONE CORPORATION 1181191 1701.70(B)(6) Page 2 of 2Form 540 Last Revised: 06/2019 A copy of the resolution of amendment is attached to this document.

If a director’s tendered resignation is rejected by the Board, the director will continue to serve until the next annual meeting of shareholders and until his or her successor is duly elected, or his or her earlier death, resignation or removal. 6 If a director’s tendered resignation is accepted by the Board, then the Board, in its sole discretion, may fill any resulting vacancy or may decrease the number of directors comprising the Board, in each case pursuant to the provisions of the Company’s Code of Regulations. March 6, 2024 Avient Corporation Corporate Governance Guidelines 1.

Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income attributable to Avient shareholders $ 84.2 $ 0.91 $ 79.3 $ 0.86 Special items, after tax (Attachment 3) 7.2 0.08 2.6 0.03 Adjusted net income / EPS - excluding special items $ 91.4 $ 0.99 $ 81.9 $ 0.89 6 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2022 2021 Sales $ 1,293.8 $ 1,162.3 Cost of sales 1,000.1 859.9 Gross margin 293.7 302.4 Selling and administrative expense 165.1 182.0 Operating income 128.6 120.4 Interest expense, net (16.9) (19.3) Other (expense) income, net (0.6) 1.5 Income before income taxes 111.1 102.6 Income taxes (26.6) (22.9) Net income 84.5 79.7 Net income attributable to noncontrolling interests (0.3) (0.4) Net income attributable to Avient shareholders $ 84.2 $ 79.3 Earnings per share attributable to Avient common shareholders - Basic $ 0.92 $ 0.87 Earnings per share attributable to Avient common shareholders - Diluted $ 0.91 $ 0.86 Cash dividends declared per share of common stock $ 0.2375 $ 0.2125 Weighted-average shares used to compute earnings per common share: Basic 91.5 91.3 Diluted 92.3 92.2 7 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended March 31, 2022 2021 Cost of sales: Restructuring costs, including accelerated depreciation and amortization $ (4.4) $ (1.8) Environmental remediation costs (2.0) (0.5) Reimbursement of previously incurred environmental costs 0.6 4.5 Impact on cost of sales (5.8) 2.2 Selling and administrative expense: Restructuring, legal and other 0.9 (1.3) Acquisition related costs (2.9) (3.3) Impact on selling and administrative expense (2.0) (4.6) Impact on operating income (7.8) (2.4) Other income, net 0.1 — Impact on income before income taxes (7.7) (2.4) Income tax benefit on above special items 2.0 0.9 Tax adjustments(2) (1.5) (1.1) Impact of special items on net income attributable to Avient Shareholders $ (7.2) $ (2.6) Diluted earnings per common share impact $ (0.08) $ (0.03) Weighted average shares used to compute adjusted earnings per share: Diluted 92.3 92.2 (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 actuarial 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 the divestiture of operating businesses, joint ventures and equity investments; 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 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. 8 Attachment 4 Avient Corporation Condensed Consolidated Balance Sheets (In millions) (Unaudited) March 31, 2022 December 31, 2021 ASSETS Current assets: Cash and cash equivalents $ 562.6 $ 601.2 Accounts receivable, net 757.9 642.3 Inventories, net 475.4 461.1 Other current assets 131.0 122.4 Total current assets 1,926.9 1,827.0 Property, net 661.9 676.1 Goodwill 1,283.4 1,286.4 Intangible assets, net 904.1 925.2 Operating lease assets, net 67.1 74.1 Other non-current assets 200.3 208.4 Total assets $ 5,043.7 $ 4,997.2 LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Short-term and current portion of long-term debt $ 607.5 $ 8.6 Accounts payable 642.3 553.9 Current operating lease obligations 21.7 24.2 Accrued expenses and other current liabilities 284.8 353.9 Total current liabilities 1,556.3 940.6 Non-current liabilities: Long-term debt 1,250.2 1,850.3 Pension and other post-retirement benefits 98.5 100.0 Deferred income taxes 99.4 100.6 Non-current operating lease obligations 45.9 50.1 Other non-current liabilities 164.1 165.1 Total non-current liabilities 1,658.1 2,266.1 SHAREHOLDERS' EQUITY Avient shareholders’ equity 1,813.2 1,774.7 Noncontrolling interest 16.1 15.8 Total equity 1,829.3 1,790.5 Total liabilities and equity $ 5,043.7 $ 4,997.2 9 Attachment 5 Avient Corporation Condensed Consolidated Statements of Cash Flows (Unaudited) (In millions) Three Months Ended March 31, 2022 2021 Operating Activities Net income $ 84.5 $ 79.7 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 35.7 36.6 Accelerated depreciation and amortization 2.1 0.5 Share-based compensation expense 3.2 2.7 Changes in assets and liabilities, net of the effect of acquisitions: Increase in accounts receivable (118.8) (137.6) Increase in inventories (15.1) (35.1) Increase in accounts payable 90.5 67.3 Decrease in pension and other post-retirement benefits (4.0) (7.1) Decrease in accrued expenses and other assets and liabilities, net (59.2) (3.4) Net cash provided by operating activities 18.9 3.6 Investing activities Capital expenditures (13.3) (16.5) Other investing activities — (2.0) Net cash used by investing activities (13.3) (18.5) Financing activities Purchase of common shares for treasury (15.8) (4.2) Cash dividends paid (21.7) (19.5) Repayment of long-term debt (2.4) (2.3) Payments of withholding tax on share awards (3.9) (3.1) Net cash used by financing activities (43.8) (29.1) Effect of exchange rate changes on cash (0.4) (11.0) Decrease in cash and cash equivalents (38.6) (55.0) Cash and cash equivalents at beginning of year 601.2 649.5 Cash and cash equivalents at end of period $ 562.6 $ 594.5 10 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.