Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows including, without limitation, any supply chain and logistics issues; changes in laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to achieve the strategic and other objectives relating to the Avient Protective Materials business; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation and any recessionary conditions. 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

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks, including recessionary conditions; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; any material adverse changes in the Dyneema Business; our ability to achieve the strategic and other objectives relating to the Dyneema Acquisition, and the possible sale of the Distribution business segment; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation and any recessionary conditions. 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

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions. 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

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows; our ability to achieve the strategic and other objectives relating to the acquisition of Clariant's Masterbatch business, including any expected synergies; changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve the anticipated financial benefit from initiatives related to acquisition and integration working capital reductions, cost reductions and employee productivity goals; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to consummate and successfully integrate acquisitions; and amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions. 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

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions. Three Months Ended September 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 38.2 $ 0.41 $ 5.1 $ 0.06 Special items, after-tax (Attachment 3) 6.6 0.07 32.0 0.35 Amortization expense, after-tax 15.0 0.16 15.2 0.16 Adjusted net income / EPS $ 59.8 $ 0.65 $ 52.3 $ 0.57 (1) Per share amounts may not recalculate from figures presented herein due to rounding Nine Months Ended September 30, 2024 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 121.2 $ 1.32 $ 48.0 $ 0.52 Special items, after-tax (Attachment 3) 33.9 0.37 73.9 0.81 Amortization expense, after-tax 44.7 0.49 46.5 0.51 Adjusted net income / EPS $ 199.8 $ 2.17 $ 168.4 $ 1.84 (1) Per share amounts may not recalculate from figures presented herein due to rounding 7 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, 2024 2023 2024 2023 Sales $ 815.2 $ 753.7 $ 2,493.9 $ 2,423.8 Cost of sales 553.8 558.4 1,696.7 1,740.2 Gross margin 261.4 195.3 797.2 683.6 Selling and administrative expense 184.2 161.0 553.5 529.9 Operating income 77.2 34.3 243.7 153.7 Interest expense, net (26.9) (30.3) (80.1) (88.5) Other (expense) income, net (0.3) 1.0 (2.1) 1.5 Income from continuing operations before income taxes 50.0 5.0 161.5 66.7 Income tax (expense) benefit (11.3) 0.1 (39.3) (18.0) Net income from continuing operations 38.7 5.1 122.2 48.7 Loss from discontinued operations, net of income taxes — — — (0.9) Net income $ 38.7 $ 5.1 $ 122.2 $ 47.8 Net income attributable to noncontrolling interests (0.5) — (1.0) (0.7) Net income attributable to Avient common shareholders $ 38.2 $ 5.1 $ 121.2 $ 47.1 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.42 $ 0.06 $ 1.33 $ 0.53 Discontinued operations — — — (0.01) Total $ 0.42 $ 0.06 $ 1.33 $ 0.52 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.41 $ 0.06 $ 1.32 $ 0.52 Discontinued operations — — — (0.01) Total $ 0.41 $ 0.06 $ 1.32 $ 0.51 Cash dividends declared per share of common stock $ 0.2575 $ 0.2475 $ 0.7725 $ 0.7425 Weighted-average shares used to compute earnings per common share: Basic 91.3 91.1 91.3 91.1 Diluted 92.3 91.9 92.0 91.8 8 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, 2024 2023 2024 2023 Cost of sales: Restructuring costs, including accelerated depreciation $ 1.8 $ (2.1) $ 5.6 $ (9.9) Environmental remediation costs (2.4) (38.1) (28.2) (52.5) Impact on cost of sales (0.6) (40.2) (22.6) (62.4) Selling and administrative expense: Restructuring and employee separation costs (3.1) (2.0) (6.6) (13.8) Legal and other (4.3) 1.7 (10.1) (9.1) Acquisition related costs (0.4) (0.5) (2.5) (4.6) Impact on selling and administrative expense (7.8) (0.8) (19.2) (27.5) Impact on operating income (8.4) (41.0) (41.8) (89.9) Interest expense, net - financing costs (1.3) (2.2) (2.3) (2.2) Other income (loss) — — 0.1 (0.1) Impact on income from continuing operations before income taxes (9.7) (43.2) (44.0) (92.2) Income tax benefit on special items 3.5 10.8 11.9 23.2 Tax adjustments(2) (0.4) 0.4 (1.8) (4.9) Impact of special items on net income from continuing operations $ (6.6) $ (32.0) $ (33.9) $ (73.9) Diluted earnings per common share impact $ (0.07) $ (0.35) $ (0.37) $ (0.81) Weighted average shares used to compute adjusted earnings per share: Diluted 92.3 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 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

Factors that could cause actual results to differ materially from those implied by these forward- looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs and any recessionary conditions. Three Months Ended March 31, 2025 2024 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net (loss) income attributable to Avient common shareholders $ (20.2) $ (0.22) $ 49.4 $ 0.54 Special items, after-tax (Attachment 3) 75.7 0.82 5.5 0.06 Amortization expense, after-tax 14.5 0.16 14.9 0.16 Adjusted net income / EPS $ 70.0 $ 0.76 $ 69.8 $ 0.76 (1) Per share amounts may not recalculate from figures presented herein due to rounding 7 Attachment 2 Avient Corporation Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended March 31, 2025 2024 Sales $ 826.6 $ 829.0 Cost of sales 563.4 550.8 Gross margin 263.2 278.2 Selling and administrative expense 262.5 184.2 Operating income 0.7 94.0 Interest expense, net (26.9) (26.6) Other expense, net (0.4) (0.9) (Loss) income before income taxes (26.6) 66.5 Income tax benefit (expense) 6.7 (16.8) Net (loss) income $ (19.9) $ 49.7 Net income attributable to noncontrolling interests (0.3) (0.3) Net (loss) income attributable to Avient common shareholders $ (20.2) $ 49.4 (Loss) earnings per share attributable to Avient common shareholders - Basic: $ (0.22) $ 0.54 (Loss) earnings per share attributable to Avient common shareholders - Diluted: $ (0.22) $ 0.54 Cash dividends declared per share of common stock $ 0.2700 $ 0.2575 Weighted-average shares used to compute (loss) earnings per common share: Basic 91.5 91.2 Diluted 91.5 92.0 8 Attachment 3 Avient Corporation Summary of Special Items (Unaudited) (In millions, except per share data) Special items (1) Three Months Ended March 31, 2025 2024 Cost of sales: Restructuring costs, including accelerated depreciation $ (4.1) $ 3.6 Environmental remediation costs (4.9) (4.0) Reimbursement of previously incurred environmental costs 1.3 — Impact on cost of sales (7.7) (0.4) Selling and administrative expense: Restructuring and employee separation costs (5.1) (0.7) Legal and other (0.4) (3.5) Cloud-based enterprise resource planning system impairment (86.3) — Acquisition related costs — (1.6) Impact on selling and administrative expense (91.8) (5.8) Impact on operating income (99.5) (6.2) Interest expense, net - financing costs (1.7) — Impact on (loss) income before income taxes (101.2) (6.2) Income tax benefit on special items 25.5 1.4 Tax adjustments(2) — (0.7) Impact of special items on net (loss) income $ (75.7) $ (5.5) Diluted (loss) earnings per common share impact $ (0.82) $ (0.06) Weighted average shares used to compute adjusted earnings per share: Diluted 91.8 92.0 (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

Support services include: • New product trial support • On-site product and equipment training programs • Issue troubleshooting • Best practice production process and maintenance reviews • Equipment selection guidance • Process reporting • Inventory management support • Equipment housekeeping There are extensive requirements governing polymer based products, from chemical legislation imposing requirements on the manufacture, marketing and use of the initial raw materials to compositional and good manufacturing practice requirements for the finished materials.

We are developing a Supplier Sustainability Program designed to address quality, cost and reliability requirements, and a range of sustainability, social responsibility and environmental considerations. .

Support services include: • New product trial support • On-site product and equipment training programs • Issue troubleshooting • Best practice production process and maintenance reviews • Equipment selection guidance • Process reporting • Inventory management support • Equipment housekeeping There are extensive requirements governing polymer based products, from chemical legislation imposing requirements on the manufacture, marketing and use of the initial raw materials to compositional and good manufacturing practice requirements for the finished materials.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • production outages or material costs associated with scheduled or unscheduled maintenance programs; • unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; • other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts, tariffs, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.”