PowerPoint Presentation M E D I C A L C O N N E C T O R S • Ongoing production with no change to regular set up • Excellent processing and demolding performance • Color stability during processing • Excellent chemical and impact resistance • Enabled efficient ongoing production rates without changing any processing parameters • Safeguarded color stability and transparency during processing for optimal aesthetics • Ensured regulatory requirements for biocompatible ISO109931 and FDA were met • Provided a solution effective across a range of high-temperature polymers, including PEEK, PPSU, PES, PSU, PEI, LCP, and PPS Colorant Chromatics Evoluscend non- PFAS* high-temperature polymer mold release additive KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION PRODUCTIVITY + REGULATORY LEARN MORE ELECTRICAL COMPONENT OEM (*) A non-PFAS additive manufactured without non-intentionally added (NIA) PFAS or PTFE. (*) manufactured without intentionally added PFAS and without PTFE (1) refers to sulfone products only https://www.avient.com/products/polymer-additives/processing-enhancement-additives/colorant-chromatics-evoluscend-non-pfas-high-temperature-mold-release-additive Slide Number 1

CABLE MANUFACTURER F L A M E - R E T A R D A N T S H E A T H F O R R I S E R C A B L E S • Fire performance: CPR classification Dca s1 a1 d0 at a thickness of 350µm • Low shrinkage • Water, UV, and chemical resistance • Low coefficient of friction (CoF) • Reduced overall cable weight cable by reducing the jacket thickness from 550µm to 350µm • Increased the lifetime value of the cable by providing superior chemical and UV resistance • Provided low CoF on the inner layer, making the solution suitable for use with micro ducts as it’s easier to blow cables inside ECCOH LSFOH 5702 SEPAP Formulation KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION UV + CHEMICAL RESISTANCE LEARN MORE © 2024 Avient Corporation, All Rights Reserved https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations Cable Manufacturer

TPEE/TPU FILM MANUFACTURER T P E E / T P U F I L M F O R A P P A R E L A N D S H O E S • Avoid phenolic yellowing effect after a certain time of storage • Offer an anti-phenolic yellowing solution, which can be applied on light color or translucent film for fabric • Maintain the soft touch of the original TPEE / TPU film • Contributed to final products, ensuring the film passed grade 4 of the yellowing standard (ISOx18 2007) • Provided good transparency on 0.04- 0.05mm film • Offered long-lasting protection without the need for additional post-processing Cesa Anti-phenolic Yellowing Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-additives/surface-modifier-additives/cesa-anti-phenolic-yellowing-additives Slide 1: TPEE/tpu FILM Manufacturer

Three Months Ended December 31, 2022 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net (loss) income from continuing operations attributable to Avient shareholders $ (17.0) $ (0.19) $ 11.2 $ 0.12 Special items, after tax (Attachment 3) 38.3 0.42 23.9 0.26 Amortization expense, after-tax 14.6 0.16 11.3 0.12 Adjusted net income / EPS $ 35.9 $ 0.39 $ 46.4 $ 0.50 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2022 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 82.8 $ 0.90 $ 151.8 $ 1.65 Special items, after tax (Attachment 3) 116.2 1.26 50.0 0.54 Amortization expense, after-tax 49.0 0.53 44.9 0.49 Adjusted net income / EPS $ 248.0 $ 2.69 $ 246.7 $ 2.68 (1) Per share amounts may not recalculate from figures presented herein due to rounding 9 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, 2022 2021 2022 2021 Sales $ 790.4 $ 807.1 $ 3,396.9 $ 3,315.5 Cost of sales 618.4 590.5 2,514.2 2,371.7 Gross margin 172.0 216.6 882.7 943.8 Selling and administrative expense 171.6 166.4 639.4 664.1 Operating income 0.4 50.2 243.3 279.7 Interest expense, net (49.4) (17.5) (119.8) (75.2) Other expense, net (28.4) (5.3) (59.7) (1.0) (Loss) income from continuing operations before income taxes (77.4) 27.4 63.8 203.5 Income tax benefit (expense) 60.8 (17.1) 19.3 (51.9) Net (loss) income from continuing operations (16.6) 10.3 83.1 151.6 Income from discontinued operations, net of income taxes 561.5 18.7 620.3 79.0 Net income 544.9 29.0 703.4 230.6 Net (income) loss attributable to noncontrolling interests (0.4) 0.9 (0.3) 0.2 Net income attributable to Avient common shareholders $ 544.5 $ 29.9 $ 703.1 $ 230.8 Earnings per share attributable to Avient common shareholders - Basic: Continuing operations $ (0.19) $ 0.12 $ 0.91 $ 1.66 Discontinued operations 6.17 0.21 6.80 0.87 Total $ 5.98 $ 0.33 $ 7.71 $ 2.53 Earnings per share attributable to Avient common shareholders - Diluted: Continuing operations $ (0.19) $ 0.12 $ 0.90 $ 1.65 Discontinued operations 6.17 0.20 6.73 0.86 Total $ 5.98 $ 0.32 $ 7.63 $ 2.51 Cash dividends declared per share of common stock $ 0.2475 $ 0.2375 $ 0.9600 $ 0.8750 Weighted-average shares used to compute earnings per common share: Basic 91.0 91.5 91.2 91.4 Diluted 91.0 92.4 92.2 92.1 10 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, 2022 2021 2022 2021 Cost of sales: Restructuring costs, including accelerated depreciation $ (21.3) $ (6.0) $ (31.1) $ (14.6) Environmental remediation costs (0.4) (0.5) (24.2) (22.9) Reimbursement of previously incurred environmental costs — — 8.3 4.5 Acquisition related costs (23.8) 0.6 (34.1) (0.6) Impact on cost of sales (45.5) (5.9) (81.1) (33.6) Selling and administrative expense: Restructuring, legal and other (8.3) (4.2) (8.3) (5.9) Acquisition related costs (6.1) (1.1) (19.3) (8.3) Impact on selling and administrative expense (14.4) (5.3) (27.6) (14.2) Impact on operating income (59.9) (11.2) (108.7) (47.8) Interest expense, net - committed financing and debt extinguishment (16.0) — (26.0) — Mark-to-market on derivatives — — (30.9) — Pension and post retirement mark-to-market adjustment and other (28.4) (9.3) (28.4) (9.3) Impact on Other expense, net (28.4) (9.3) (59.3) (9.3) Impact on income from continuing operations before income taxes (104.3) (20.5) (194.0) (57.1) Income tax benefit benefit/(expense) on above special items 26.8 4.1 49.4 13.0 Tax adjustments(2) 39.2 (7.5) 28.4 (5.9) Impact of special items on net income from continuing operations $ (38.3) $ (23.9) $ (116.2) $ (50.0) Diluted earnings per common share impact $ (0.42) $ (0.26) $ (1.26) $ (0.54) Weighted average shares used to compute adjusted earnings per share: Diluted 91.7 92.4 92.2 92.1 (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

Three Months Ended September 30, 2022 Three Months Ended September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net (loss) income from continuing operations attributable to Avient shareholders $ (27.4) $ (0.30) $ 33.7 $ 0.37 Special items, after tax (Attachment 3) 68.3 0.75 11.7 0.13 Amortization expense, after-tax 13.4 0.14 $ 11.0 $ 0.11 Adjusted net income / EPS $ 54.3 $ 0.59 $ 56.4 $ 0.61 Nine Months Ended September 30, 2022 Nine Months Ended September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 99.8 $ 1.08 $ 143.3 $ 1.56 Special items, after tax (Attachment 3) 77.9 0.85 26.0 0.28 Amortization expense, after-tax 34.9 0.38 $ 33.6 0.36 Adjusted net income / EPS $ 212.6 $ 2.31 $ 202.9 $ 2.20 8 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Sales $ 823.3 $ 818.0 $ 2,606.5 $ 2,508.5 Cost of sales 627.9 602.4 1,895.8 1,781.2 Gross margin 195.4 215.6 710.7 727.3 Selling and administrative expense 154.8 162.8 467.8 497.7 Operating income 40.6 52.8 242.9 229.6 Interest expense, net (37.3) (19.0) (70.4) (57.8) Other (expense) income, net (32.3) 1.6 (31.3) 4.3 (Loss) income from continuing operations before income taxes (29.0) 35.4 141.2 176.1 Income tax benefit (expense) 1.2 (2.0) (41.5) (32.1) Net (loss) income from continuing operations (27.8) 33.4 99.7 144.0 Income from discontinued operations, net of income taxes 17.1 19.2 58.8 57.7 Net (loss) income (10.7) 52.6 158.5 201.7 Net loss (income) attributable to noncontrolling interests 0.4 0.3 0.1 (0.7) Net (loss) income attributable to Avient common shareholders $ (10.3) $ 52.9 $ 158.6 $ 201.0 (Loss) earnings per share attributable to Avient common shareholders - Basic: Continuing operations $ (0.30) $ 0.37 $ 1.09 $ 1.57 Discontinued operations 0.19 0.21 0.65 0.63 Total $ (0.11) $ 0.58 $ 1.74 $ 2.20 (Loss) earnings per share attributable to Avient common shareholders - Diluted: Continuing operations $ (0.30) $ 0.37 $ 1.08 $ 1.56 Discontinued operations 0.19 0.20 0.64 0.62 Total $ (0.11) $ 0.57 $ 1.72 $ 2.18 Cash dividends declared per share of common stock $ 0.2375 $ 0.2125 $ 0.7125 $ 0.6375 Weighted-average shares used to compute earnings per common share: Basic 90.9 91.4 91.3 91.3 Diluted 90.9 92.2 92.0 92.1 9 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Cost of sales: Restructuring costs, including accelerated depreciation $ (2.8) $ (5.3) $ (9.8) $ (8.6) Environmental remediation costs (18.8) (9.4) (23.8) (22.4) Reimbursement of previously incurred environmental costs 0.1 — 8.3 4.5 Acquisition related costs (10.3) (2.6) (10.3) (1.2) Impact on cost of sales (31.8) (17.3) (35.6) (27.7) Selling and administrative expense: Restructuring, legal and other (0.2) — — (1.7) Acquisition related costs (8.2) (2.7) (13.2) (7.2) Impact on selling and administrative expense (8.4) (2.7) (13.2) (8.9) Impact on operating income (40.2) (20.0) (48.8) (36.6) Interest expense, net - costs related to committed financing (10.0) — (10.0) — Mark-to-market on derivative instruments (31.8) — (30.9) — Other — 0.1 0.1 0.1 Impact on other (expense)/income, net (31.8) 0.1 (30.8) 0.1 Impact on income from continuing operations before income taxes (82.0) (19.9) (89.6) (36.5) Income tax benefit on above special items 20.5 4.6 22.5 8.9 Tax adjustments(2) (6.8) 3.6 (10.8) 1.6 Impact of special items on net income from continuing operations $ (68.3) $ (11.7) $ (77.9) $ (26.0) Diluted earnings per common share impact $ (0.75) $ (0.13) $ (0.85) $ (0.28) Weighted average shares used to compute adjusted earnings per share: Diluted 91.6 92.2 92.0 92.1 (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

Three Months Ended June 30, 2022 Three Months Ended June 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income attributable to Avient shareholders $ 84.7 $ 0.92 $ 68.8 $ 0.74 Special items, after tax (Attachment 3) 5.1 0.06 11.7 0.13 Adjusted net income / EPS - excluding special items $ 89.8 $ 0.98 $ 80.5 $ 0.87 Six months ended June 30, 2022 Six months ended June 30, 2021 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income attributable to Avient shareholders $ 168.9 $ 1.83 $ 148.1 $ 1.60 Special items, after tax (Attachment 3) 12.3 0.13 14.3 0.16 Adjusted net income / EPS - excluding special items $ 181.2 $ 1.96 $ 162.4 $ 1.76 7 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Sales $ 1,302.4 $ 1,235.2 $ 2,596.2 $ 2,397.5 Cost of sales 998.6 946.5 1,998.7 1,806.4 Gross margin 303.8 288.7 597.5 591.1 Selling and administrative expense 174.3 180.6 339.4 362.6 Operating income 129.5 108.1 258.1 228.5 Interest expense, net (16.2) (19.5) (33.1) (38.8) Other income, net 1.4 1.2 0.8 2.7 Income before income taxes 114.7 89.8 225.8 192.4 Income tax expense (30.0) (20.4) (56.6) (43.3) Net income 84.7 69.4 169.2 149.1 Net income attributable to noncontrolling interests — (0.6) (0.3) (1.0) Net income attributable to Avient shareholders $ 84.7 $ 68.8 $ 168.9 $ 148.1 Earnings per share attributable to Avient common shareholders - Basic $ 0.93 $ 0.75 $ 1.85 $ 1.62 Earnings per share attributable to Avient common shareholders - Diluted $ 0.92 $ 0.74 $ 1.83 $ 1.60 Cash dividends declared per share of common stock $ 0.2375 $ 0.2125 $ 0.4750 $ 0.4250 Weighted-average shares used to compute earnings per common share: Basic 91.4 91.3 91.4 91.3 Diluted 92.1 92.4 92.2 92.3 8 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Cost of sales: Restructuring costs, including accelerated depreciation and amortization $ (2.6) $ (1.5) $ (7.0) $ (3.3) Environmental remediation costs (3.0) (12.5) (5.0) (13.0) Reimbursement of previously incurred environmental costs 7.6 — 8.2 4.5 Acquisition related costs — 1.4 — 1.4 Impact on cost of sales 2.0 (12.6) (3.8) (10.4) Selling and administrative expense: Restructuring, legal and other (4.2) (0.4) (3.3) (1.7) Acquisition related costs (2.1) (1.2) (5.0) (4.5) Impact on selling and administrative expense (6.3) (1.6) (8.3) (6.2) Impact on operating income (4.3) (14.2) (12.1) (16.6) Other income, net — — 0.1 — Mark-to-market on cross-currency swaps 0.9 — 0.9 — Impact on income before income taxes (3.4) (14.2) (11.1) (16.6) Income tax benefit on above special items 0.8 3.4 2.8 4.3 Tax adjustments(2) (2.5) (0.9) (4.0) (2.0) Impact of special items on net income attributable to Avient Shareholders $ (5.1) $ (11.7) $ (12.3) $ (14.3) Diluted earnings per common share impact $ (0.06) $ (0.13) $ (0.13) $ (0.16) Weighted average shares used to compute adjusted earnings per share: Diluted 92.1 92.4 92.2 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, 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

Slide 7 - Summary of Special Items Recast for DSS Divestiture Reflects special items from continuing operations which 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; 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.

Three Months Ended March 31, 2021 Three Months Ended Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 79.3 $ 0.86 $ 33.1 $ 0.38 Special items, after tax (Attachment 3) 2.6 0.03 8.6 0.10 Adjusted net income / EPS - excluding special items $ 81.9 $ 0.89 $ 41.7 $ 0.48 7 Attachment 2 Condensed Consolidated Statements of Income (Unaudited) Three Months Ended Sales $ 1,162.3 $ 711.5 Cost of sales 859.9 540.0 Gross margin 302.4 171.5 Selling and administrative expense 182.0 118.7 Operating income 120.4 52.8 Interest expense, net (19.3) (9.4) Other income, net 1.5 1.6 Income from continuing operations before income taxes 102.6 45.0 Income taxes (22.9) (11.9) Net income from continuing operations 79.7 33.1 Loss from discontinued operations, net of income taxes — (0.3) Net income 79.7 32.8 Net income attributable to noncontrolling interests (0.4) — Net income attributable to Avient common shareholders $ 79.3 $ 32.8 Earnings per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.87 $ 0.38 Discontinued operations — — Total $ 0.87 $ 0.38 Earnings per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.86 $ 0.38 Discontinued operations — — Total $ 0.86 $ 0.38 Cash dividends declared per share of common stock $ 0.2125 $ 0.2025 Weighted-average shares used to compute earnings per common share: Basic 91.3 86.3 Diluted 92.2 86.7 8 Attachment 3 Summary of Special Items (Unaudited) Special items (1) March 31, Cost of sales: Restructuring costs, including accelerated depreciation and amortization $ (1.8) $ — Environmental remediation costs (0.5) (0.4) Reimbursement of previously incurred environmental costs 4.5 0.2 Impact on cost of sales 2.2 (0.2) Selling and administrative expense: Restructuring, legal and other (1.3) (1.8) Acquisition earn-out adjustments — (1.0) Acquisition related costs (3.3) (6.7) Impact on selling and administrative expense (4.6) (9.5) Impact on operating income (2.4) (9.7) Other income, net — 0.1 Impact on income from continuing operations before income taxes (2.4) (9.6) Income tax benefit on above special items 0.9 2.0 Tax adjustments(2) (1.1) (1.0) Impact of special items on net income from continuing operations attributable to Avient Shareholders $ (2.6) $ (8.6) Diluted earnings per common share impact $ (0.03) $ (0.10) Weighted average shares used to compute adjusted earnings per share: Diluted 92.2 86.7 (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

They are designed to provide manufacturing efficiency, enhance performance by providing additional cable features, and meet end user specifications. Processing Aids Cesa™ Process Additives Improves manufacturing efficiency: increase output, reduce die build-up. Helps to minimize manufacturing investment while optimizing cross-linking benefits e.g., better thermal resistance.

Avient and its global direct and indirect subsidiaries and affiliates, including ColorMatrix (“Avient”), are intermediate suppliers of specialty polymers and related raw materials designed to meet the specifications of its manufacturing customers. Avient does not manufacture or sell totally finished articles to be sold as consumer goods. In sourcing its own raw materials and in distributing products manufactured by others, Avient is required to meet the specifications prescribed by its customers.