While residential housing completions are trending up, permits and starts are down, according to the latest US Census Bureau data. Census Bureau, HUD, October 18, 2024 Sep-23 Sep-24 Permits Starts Completions Factors affecting these data points include labor shortages, rising demand for housing, mortgage interest rates, and a heightened emphasis on sustainability. To get material samples and engineering data on Hammerhead FR flame retardant composite panels, let’s start a conversation.

MAJOR W&C PRODUCER C A T E G O R Y C A B L E • Flame retardance • Replace fluorinated ethylene propylene (FEP) • High tensile strength and high elongation at break • Low dielectric constant (Dk) of 2.7-2.9 for data signal integrity • Satisfied stringent UL 444 requirements with an FEP alternative to achieve cost savings • Mitigated regulatory concerns with comprehensive technical support during testing and commercialization • Met required melt strength parameters for efficient profile extrusion Maxxam™ FR Flame Retardant Polyolefin Formulations KEY REQUIREMENTS WHY AVIENT?

Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2023 2022 Sales $ 845.7 $ 892.2 Operating Income 57.1 102.2 Net income from continuing operations attributable to Avient shareholders 20.8 64.4 Basic earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 Diluted earnings per share from continuing operations attributable to Avient shareholders $ 0.23 $ 0.70 Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Three Months Ended March 31, 2023 Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 20.8 $ 0.23 $ 64.4 $ 0.70 Special items, after tax (Attachment 3) 22.3 0.24 6.4 0.07 Amortization expense, after-tax 15.1 0.16 10.8 0.12 Adjusted net income / EPS $ 58.2 $ 0.63 $ 81.6 $ 0.89 8 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2023 2022 Sales $ 845.7 $ 892.2 Cost of sales 598.1 637.8 Gross margin 247.6 254.4 Selling and administrative expense 190.5 152.2 Operating income 57.1 102.2 Interest expense, net (28.8) (16.9) Other income (expense), net 0.7 (0.6) Income from continuing operations before income taxes 29.0 84.7 Income tax expense (7.7) (20.0) Net income from continuing operations 21.3 64.7 (Loss) income from discontinued operations, net of income taxes (0.9) 19.8 Net income 20.4 84.5 Net income attributable to noncontrolling interests (0.5) (0.3) Net income attributable to Avient common shareholders $ 19.9 $ 84.2 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.23 $ 0.70 Discontinued operations (0.01) 0.22 Total $ 0.22 $ 0.92 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.23 $ 0.70 Discontinued operations (0.01) 0.21 Total $ 0.22 $ 0.91 Cash dividends declared per share of common stock $ 0.2475 $ 0.2375 Weighted-average shares used to compute earnings per common share: Basic 91.0 91.5 Diluted 91.8 92.3 9 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended March 31, 2023 2022 Cost of sales: Restructuring costs, including accelerated depreciation $ (6.6) $ (4.4) Environmental remediation costs (1.4) (2.0) Reimbursement of previously incurred environmental costs — 0.6 Impact on cost of sales (8.0) (5.8) Selling and administrative expense: Restructuring, legal and other (15.7) 1.9 Acquisition related costs (3.4) (2.9) Impact on selling and administrative expense (19.1) (1.0) Impact on operating income (27.1) (6.8) Other income (loss), net (0.2) 0.1 Impact on income from continuing operations before income taxes (27.3) (6.7) Income tax expense (benefit) on above special items 6.9 1.8 Tax adjustments(2) (1.9) (1.5) Impact of special items on net income from continuing operations $ (22.3) $ (6.4) Diluted earnings per common share impact $ (0.24) $ (0.07) Weighted average shares used to compute adjusted earnings per share: Diluted 91.8 92.3 (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, 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 Three Months Ended March 31, 2023 2022 Sales: Color, Additives and Inks $ 537.0 $ 649.5 Specialty Engineered Materials 309.7 243.1 Corporate (1.0) (0.4) Sales $ 845.7 $ 892.2 Gross margin: Color, Additives and Inks $ 162.0 $ 192.1 Specialty Engineered Materials 93.9 68.4 Corporate (8.3) (6.1) Gross margin $ 247.6 $ 254.4 Selling and administrative expense: Color, Additives and Inks $ 96.4 $ 97.6 Specialty Engineered Materials 50.8 30.1 Corporate 43.3 24.5 Selling and administrative expense $ 190.5 $ 152.2 Operating income: Color, Additives and Inks $ 65.6 $ 94.5 Specialty Engineered Materials 43.1 38.3 Corporate (51.6) (30.6) Operating income $ 57.1 $ 102.2 Depreciation & amortization: Color, Additives and Inks $ 25.8 $ 26.0 Specialty Engineered Materials 21.2 7.8 Corporate 3.5 3.8 Depreciation & Amortization $ 50.5 $ 37.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 91.4 $ 120.5 Specialty Engineered Materials 64.3 46.1 Corporate (48.1) (26.8) Other income (expense), net 0.7 (0.6) EBITDA $ 108.3 $ 139.2 13 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Buyer acknowledges that information in Seller’s marketing materials, technical data sheets and other descriptive publications distributed or published on its websites may vary from time to time without notice. Buyer acknowledges that Seller has furnished to Buyer safety data sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. Confidentiality and Data Protection.

SAFETY & HEALTH INDEMNITY Buyer acknowledges that Seller has furnished to Buyer Material Safety Data Sheets as required under applicable laws and regulations, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. DATA PROTECTION Buyer hereby agrees that any data in relation with the business relationship between Buyer and Seller may be processed by Seller, in compliance with applicable laws and regulations. 15.

The amounts and values for the facility(ies) identified below are accurate, based on reasonable estimates using available data.  The data for the facility(ies) that I represent are hereby submitted to the programs identified below using the Single Window Reporting Application. I also acknowledge that the data will be made public.

K58220T N/A Kevlar® 2480 LBs (1125 KGs) 230 FT/LB (154 M/KG) Flat 2.81 mm N/A Strength member in cable application Product ID FIBER-LINE® Polymer Jacket Base Fiber Break Strength Yield Geometry Nominal Diameter Description 13.75mm K/Hytrel Hytrel Jacket Kevlar® 29000 LBs (13154 KGs) 138 KGs/KM Round 13.75mm Kevlar rope w/ Hytrel extruded jacket 12.5mm K/TPU TPU jacket Kevlar® 24000 LBs (10885 KGs) 115 KGs/KM Round 12.5mm Kevlar rope w/ Hytrel extruded jacket 7.87mm K/MDPE MDPE Jacket Kevlar® 24000 LBs (10885 KGs) 50 KGs/KM Round 7.87mm Kevlar w/ MDPE extruded jacket .58mm C/PU TPU jacket Carbon 74 LBs (33.6 KGs) N/A Round/ Flat .58mm Carbon w/ TPU extruded jacket 4.50mm K/HDPE HDPE jacket Kevlar® 2000 LBs (907 KGs) 16 KGs/KM Round 4.06 mm Kevlar w/ HDPE extruded jacket POPULAR JACKETED STRENGTH MEMBERS MOVING HIGH PERFORMANCE FIBERS FORWARD This data is provided for informational purposes only, and does not constitute a specification. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com ABOUT FIBER-LINE® NOTICE: The information and data contained herein do not constitute sales specifications.

url=https%3A%2F%2Fwww.cbp.gov%2Ftrade%2Fforced-labor&data=05%7C01%7Cjacqueline.thomson%40avient.com%7Ca0427e02fa1b4b576fe208db6dac207e%7C7bc21b5c83b04482be9e2825d33c1759%7C0%7C0%7C638224359373869329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xxFjS7ADNXRYgriLexntpLUCOyllzLGactoRmj2EoCE%3D&reserved=0 https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Engage in due diligence of supply chains by following a nationally or internationally recognized due diligence framework; • Upon request, report to Avient on its due diligence process and certify that 3TG metals supplied to Avient from the Covered Countries are conflict free; and • Promptly report to Avient any supply chain changes regarding the origin of 3TG metals or conflict status Establish an information security and data privacy system to protect Avient’s information, including information of its customers and associates, from being disclosed, changed, destroyed, or used for any purpose other than the purpose for which it was provided.

Gasoline - 30% glass-filled (GF) grade, dry as molded (DAM), room temperature Testing methodology is an adaptation from ASTM D543 • Reapply freshly soaked gauze pad every 24 hours to prevent from drying out • Repeat for a total of 72 hours • Tensile properties recorded *Chemical resistance data for DEET, motor oil, glass cleaner, and sunscreen available upon request KEY CHARACTERISTICS Figure 1 Figure 2 3.34 3.84 3.63 1.96 2.21 0.99 3.43 3.86 3.93 1.76 3.49 2.01 3.26 3.66 3.74 1.45 1.06 0.989 2.98 3.99 3.41 1.41 1.07 0.88 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 30% LGF PKE 30% LGF PA6 30% LGF PA66 30% SGF PKE 30% SGF PA6 30% SGF PA66 Ft -lb /in Notched Izod Impact ASTM D256 23C DAM 23C Conditioned -40C DAM -40C Conditioned 1.47 1.37 1.37 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Glass-Filled PKE Glass-Filled PA6 Glass-Filled PA66 g/ cm 3 Density of Polyketone vs Nylon ASTM D792 LESS MOISTURE ABSORPTION THAN NYLON 30% Short Glass Fiber (SGF) Comparison Moisture uptake, environmental chamber 62% RH, 70°C SIMILAR DENSITY TO NYLON ASTM D792 COMPARABLE AND CONSISTENT IMPACT PERFORMANCE* Notched Izod Impact (ASTM D256) of LGF and SGF for DAM and Conditioned Materials *3,000 hr weathering data available upon request KEY CHARACTERISTICS 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

url=https%3A%2F%2Fwww.cbp.gov%2Ftrade%2Fforced-labor&data=05%7C01%7Cjacqueline.thomson%40avient.com%7Ca0427e02fa1b4b576fe208db6dac207e%7C7bc21b5c83b04482be9e2825d33c1759%7C0%7C0%7C638224359373869329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xxFjS7ADNXRYgriLexntpLUCOyllzLGactoRmj2EoCE%3D&reserved=0 https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Engage in due diligence of supply chains by following a nationally or internationally recognized due diligence framework; • Upon request, report to Avient on its due diligence process and certify that 3TG metals supplied to Avient from the Covered Countries are conflict free; and • Promptly report to Avient any supply chain changes regarding the origin of 3TG metals or conflict status Establish an information security and data privacy system to protect Avient’s information, including information of its customers and employees, from being disclosed, changed, destroyed, or used for any purpose other than the purpose for which it was provided.