In certain cases throughout this presentation

Except in the case of a force majeure, if not satisfied with Seller’s determination, Buyer as its sole remedy shall have a right to terminate this contract without further obligation upon: (i) 10 calendar days’ written notice; and (ii) payment for all Product received to date. 13.

Case Study Transition Risks: Avient’s Enterprise Risk Management process also identifies and assesses transitional risk. Case study: Avient is an active “CDP Supply Chain Partner” and continually interacts through our commercial organization to ensure customer success. Case study: We became subject to the Shenzhen pilot ETS, as it covers a broad scope across sectors.

per share on the common stock outstanding, representing a 30% increase to the quarterly cash dividend.  Cash dividends declared per share of common stock

In 2017, we repurchased 2.0 million shares of common stock and announced a significant dividend expansion of 30% this year and a plan for more than 60% cumulatively over the next three years." Cash dividends declared per share of common stock

In certain cases throughout this presentation, we have presented GAAP and non-GAAP financial measures adjusted to reflect full- year 2012 Pro forma results, including Spartech and Glasforms and excluding discontinued operations

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

Three Months Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income (loss) from continuing operations attributable to Avient shareholders $ 27.8 $ 0.30 $ (17.0) $ (0.19) Special items, after tax (Attachment 3) 5.4 0.06 38.3 0.42 Amortization expense, after-tax 15.0 0.16 14.6 0.16 Adjusted net income / EPS $ 48.2 $ 0.52 $ 35.9 $ 0.39 (1) Per share amounts may not recalculate from figures presented herein due to rounding Year Ended December 31, 2023 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 $ 82.8 $ 0.90 Special items, after tax (Attachment 3) 79.3 0.86 116.2 1.26 Amortization expense, after-tax 61.5 0.67 49.0 0.53 Adjusted net income / EPS $ 216.6 $ 2.36 $ 248.0 $ 2.69 (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 December 31, Year Ended December 31, 2023 2022 2023 2022 Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Cost of sales 510.1 618.4 2,250.3 2,514.2 Gross margin 208.9 172.0 892.5 882.7 Selling and administrative expense 165.8 171.6 695.7 639.4 Operating income 43.1 0.4 196.8 243.3 Interest expense, net (26.8) (49.4) (115.3) (119.8) Other income (expense), net 4.3 (28.4) 5.8 (59.7) Income (loss) from continuing operations before income taxes 20.6 (77.4) 87.3 63.8 Income tax benefit (expense) 7.0 60.8 (11.0) 19.3 Net income (loss) from continuing operations 27.6 (16.6) 76.3 83.1 Income (loss) from discontinued operations, net of income taxes 0.8 561.5 (0.1) 620.3 Net income 28.4 544.9 76.2 703.4 Net loss (income) attributable to noncontrolling interests 0.2 (0.4) (0.5) (0.3) Net income attributable to Avient common shareholders $ 28.6 $ 544.5 $ 75.7 $ 703.1 Earnings (loss) per share attributable to Avient common shareholders - Basic: Continuing operations $ 0.30 $ (0.19) $ 0.83 $ 0.91 Discontinued operations 0.01 6.17 — 6.80 Total $ 0.31 $ 5.98 $ 0.83 $ 7.71 Earnings (loss) per share attributable to Avient common shareholders - Diluted: Continuing operations $ 0.30 $ (0.19) $ 0.83 $ 0.90 Discontinued operations 0.01 6.17 — 6.73 Total $ 0.31 $ 5.98 $ 0.83 $ 7.63 Cash dividends declared per share of common stock $ 0.2575 $ 0.2475 $ 1.0000 $ 0.9600 Weighted-average shares used to compute earnings per common share: Basic 91.2 91.0 91.1 91.2 Diluted 91.9 91.0 91.8 92.2 8 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, 2023 2022 2023 2022 Cost of sales: Restructuring costs, including accelerated depreciation $ (2.0) $ (21.3) $ (11.9) $ (31.1) Environmental remediation costs (17.2) (0.4) (69.7) (24.2) Reimbursement of previously incurred environmental costs 1.6 — 1.6 8.3 Acquisition related costs — (23.8) — (34.1) Impact on cost of sales (17.6) (45.5) (80.0) (81.1) Selling and administrative expense: Restructuring and employee separation costs (1.1) (4.3) (14.9) (5.3) Legal and other (6.1) (4.0) (15.2) (3.0) Acquisition related costs (1.3) (6.1) (5.9) (19.3) Impact on selling and administrative expense (8.5) (14.4) (36.0) (27.6) Impact on operating income (26.1) (59.9) (116.0) (108.7) Interest expense, net - financing costs (0.1) (16.0) (2.3) (26.0) Mark-to-market on derivatives — — — (30.9) Pension and post retirement mark-to-market adjustment and other 3.8 (28.4) 3.7 (28.4) Impact on other income (expense), net 3.8 (28.4) 3.7 (59.3) Impact on income from continuing operations before income taxes (22.4) (104.3) (114.6) (194.0) Income tax benefit on above special items 4.5 26.8 27.7 49.4 Tax adjustments(2) 12.5 39.2 7.6 28.4 Impact of special items on net income from continuing operations $ (5.4) $ (38.3) $ (79.3) $ (116.2) Diluted earnings per common share impact $ (0.06) $ (0.42) $ (0.86) $ (1.26) Weighted average shares used to compute adjusted earnings per share: Diluted 91.9 91.7 91.8 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 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