S EC O N D Q UART ER 2022 RE S U LTS $122 $134 2021 2022 $0.87 $0.98 2021 2022 Q2 2022 PERFORMANCE (TOTAL COMPANY) 4 Sales Adjusted Operating Income $1,235 $1,302 2021 2022 + 5% Adjusted EPS + 10% + 13% (in millions) (in millions) (+ 10% excluding FX) (+ 16% excluding FX) (+ 20% excluding FX) Q2 2022 SEGMENT PERFORMANCE 5 CAI $624 $649 Sales ($ in millions) SEM Distribution $86 $94 Operating Income + 4% + 9% $404 $443 Sales $24 $27 Operating Income + 10% + 13% (1) $241 $244 Sales $37 $37 Operating Income + 1% Flat (+ 10% excluding FX) (+ 16% excluding FX) (+ 6% excluding FX) (+ 3% excluding FX) Q2 2021 $1,235 $122 Sustainable Solutions 17 7% 7 Healthcare 23 14% 5 Composites (ex Outdoor High Performance) 10 20% 4 Growth in Asia / LATAM 5 3% 1 Other 69 11% 5 Sub-total $1,359 10% $144 Outdoor High Performance Impact (9) (5) Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (48) (7) Q2 2022 $1,302 5% $134 Q2 2022 SALES AND OPERATING INCOME (TOTAL COMPANY) 6 Sales Growth Rate Adjusted Operating Income$ millions Adjusted EBITDA Q2 EBITDA BRIDGE 7 Price increases more than offsets raw material and supply chain impacts Q2 2021 $ 159 Demand (29) $ millions CAI: Price / Mix 87 Inflation (58) SEM: Price / Mix 36 Inflation (24) Distribution: Price / Mix 45 Inflation (41) Net Price Benefit 45 Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (7) Q2 2022 $ 170   China Lockdowns / Russia Impact $ (14) Outdoor High Performance (5) Transportation (5)  8 Q2 '21 Adjusted EPS 0.87$ Color, Additives and Inks 0.11 Specialty Engineered Materials 0.01 Distribution 0.03 Corporate Costs 0.01 F/X (0.05) Segment OI 0.11$ Interest Expense 0.03 Tax Rate (0.03) Q2 '22 Adjusted EPS 0.98$ Q2 EPS BRIDGE Key Updates • Provided progress on 2030 Sustainability Goals • Emphasized commitment to U.N. We also monitor earnings (defined as net income from continuing operations) before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA (EBITDA before the impact of special items) as a supplement to our GAAP measures. 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 5.1 0.06 11.7 0.13 Adjusted net income / EPS - excluding special items 89.8 0.98 80.5 0.87 FX adjustment n/a n/a $ (4.9) $ (0.05) Adjusted net income / EPS - excluding special items, adjusted for FX $ 89.8 $ 0.98 $ 75.6 $ 0.82 Reconciliation to Consolidated Statements of Income Three Months Ended June 30, 2022 2021 Results Results FX Adjustment FX Adjusted Results Sales: Color, Additives and Inks $ 649.1 $ 624.4 $ (35.8) $ 588.6 Specialty Engineered Materials 243.9 240.6 (10.5) 230.1 Distribution 443.2 404.4 (0.2) 404.2 Corporate and eliminations (33.8) (34.2) (1.2) (35.4) Sales $ 1,302.4 $ 1,235.2 $ (47.7) $ 1,187.5 Operating income: Color, Additives and Inks $ 93.6 $ 86.3 $ (5.2) 81.1 Specialty Engineered Materials 36.6 37.3 (1.3) 36.0 Distribution 27.1 23.7 — 23.7 Corporate and eliminations (27.8) (39.2) 0.2 (39.0) Operating income 129.5 108.1 (6.3) 101.8 Special items in operating income 4.3 14.2 — 14.2 Adjusted operating income $ 133.8 $ 122.3 $ (6.3) $ 116.0 1 Three Months Ended June 30, 2022 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating Income $ 129.5 $ 4.3 $ 133.8 Income before income taxes $ 114.7 $ 3.4 $ 118.1 Income tax expense - GAAP (30.0) — (30.0) Income tax impact of special items — (0.8) (0.8) Tax adjustments — 2.5 2.5 Net income attributable to noncontrolling interests — — — Net income attributable to Avient shareholders $ 84.7 $ 5.1 $ 89.8 EPS $ 0.92 0.06 $ 0.98 Weighted-average diluted shares 92.1 92.1 92.1 Three Months Ended June 30, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating Income $ 108.1 $ 14.2 $ 122.3 Income before income taxes $ 89.8 $ 14.2 $ 104.0 Income tax expense - GAAP (20.4) — (20.4) Income tax impact of special items — (3.4) (3.4) Tax adjustments — 0.9 0.9 Net income attributable to noncontrolling interests (0.6) — (0.6) Net income attributable to Avient shareholders $ 68.8 $ 11.7 $ 80.5 EPS $ 0.74 0.13 $ 0.87 Weighted-average diluted shares 92.4 92.4 92.4 Three Months Ended September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Results Special Items Adjusted Results Operating income $ 78.7 $ 20.0 $ 98.7 Income from continuing operations before income taxes $ 61.1 $ 19.9 $ 81.0 Income tax expense - GAAP (8.5) — (8.5) Income tax impact of special items — (4.6) (4.6) Tax adjustments — (3.6) (3.6) Net income attributable to noncontrolling interests 0.3 — 0.3 Net income from continuing operations attributable to Avient shareholders $ 52.9 $ 11.7 $ 64.6 Net income / EPS $ 0.57 $ 0.13 $ 0.70 Weighted-average diluted shares 92.2 92.2 92.2 2 Reconciliation of EBITDA by Segment Year Ended December 31, 2021 Operating income: Color, Additives and Inks $ 303.1 Specialty Engineered Materials 132.0 Distribution 93.2 Corporate and eliminations (147.1) Operating income $ 381.2 Items below OI in Corporate: Other income, net $ (1.3) Depreciation & amortization: Color, Additives and Inks $ 105.7 Specialty Engineered Materials 31.7 Distribution 0.8 Corporate and eliminations 7.7 Depreciation & Amortization $ 145.9 EBITDA: Color, Additives and Inks $ 408.8 Specialty Engineered Materials 163.7 Distribution 94.0 Corporate and eliminations (140.7) EBITDA $ 525.8 Three Months Ended June 30, Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2022 2021 2021 Net income from continuing operations – GAAP $ 84.7 $ 69.4 $ 230.6 Income tax expense 30.0 20.4 74.0 Interest expense 16.2 19.5 75.3 Depreciation and amortization from continuing operations 36.5 33.8 145.9 EBITDA $ 167.4 $ 143.1 $ 525.8 Special items, before tax 3.4 14.2 57.1 Depreciation and amortization included in special items (1.1) 1.4 (1.7) Adjusted EBITDA $ 169.7 $ 158.7 $ 581.2 3 AVNT Q2 2022 Earnings Presentation - Website v2.pdf AVNT Q2 2022 Earnings Presentation - Website.pdf AVNT Q2 2022 Earnings Presentation - Website AVNT Q2 2022 Earnings Presentation - Website AVNT Q2 2022 Earnings Presentation - Website 7.25 323pm IR Deck - AVNT-2022.06.30.pdf

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G A A P I N C O M E S TAT E M E N T R E C A S T F O R A V I E N T D I S T R I B U T I O N A S A D I S C O N T I N U E D O P E R AT I O N Avient Corporation 3 (In millions, except per share data) Q1 2021 Q2 2021 Q3 2021 Q4 2021 2021 YTD Q1 2022 Q2 2022 YTD 2022 Sales 826.0$ 864.5$ 818.0$ 807.1$ 3,315.6$ 892.2$ 891.0$ 1,783.2$ Cost of sales 562.9 615.9 602.4 590.5 2,371.7 637.8 630.1 1,267.9 Gross margin 263.1 248.6 215.6 216.6 943.9 254.4 260.9 515.3 Selling and administrative 168.7 166.2 162.8 166.4 664.1 152.2 160.8 313.0 Operating income 94.4 82.4 52.8 50.2 279.8 102.2 100.1 202.3 Interest expense, net (19.3) (19.5) (19.0) (17.5) (75.3) (16.9) (16.2) (33.1) Other income (expense), net 1.6 1.1 1.6 (5.3) (1.0) (0.6) 1.6 1.0 Income before income taxes 76.7 64.0 35.4 27.4 203.5 84.7 85.5 170.2 Income tax (expense) benefit (16.3) (13.8) (2.0) (16.2) (48.3) (20.0) (22.7) (42.7) Net income from continuing operations 60.4 50.2 33.4 11.2 155.2 64.7 62.8 127.5 Net income from discontinued operations, net of income taxes 19.3 19.2 19.2 17.7 75.4 19.8 21.9 41.7 Net income 79.7 69.4 52.6 28.9 230.6 84.5 84.7 169.2 Net (income) loss attributable to noncontrolling interests (0.4) (0.6) 0.3 0.9 0.2 (0.3) - (0.3) Net income attributable to Avient common shareholders 79.3$ 68.8$ 52.9$ 29.8$ 230.8$ 84.2$ 84.7$ 168.9$ Earnings per share attributable to Avient common shareholders - Basic Continuing operations 0.66$ 0.54$ 0.37$ 0.13$ 1.70$ 0.70$ 0.69$ 1.39$ Discontinued operations 0.21$ 0.21$ 0.21$ 0.20$ 0.83$ 0.22$ 0.24$ 0.46$ Total 0.87$ 0.75$ 0.58$ 0.33$ 2.53$ 0.92$ 0.93$ 1.85$ Earnings per share attributable to Avient common shareholders - Diluted Continuing operations 0.65$ 0.54$ 0.37$ 0.13$ 1.69$ 0.70$ 0.68$ 1.38$ Discontinued operations 0.21$ 0.20$ 0.20$ 0.19$ 0.82$ 0.21$ 0.24$ 0.45$ Total 0.86$ 0.74$ 0.57$ 0.32$ 2.51$ 0.91$ 0.92$ 1.83$ A D J U S T E D F I N A N C I A L I N F O R M AT I O N R E C A S T F O R A V I E N T D I S T R I B U T I O N A S A D I S C O N T I N U E D O P E R AT I O N Avient Corporation 4 (In millions, except per share data) Q1 2021 Q2 2021 Q3 2021 Q4 2021 2021 YTD Q1 2022 Q2 2022 YTD 2022 Sales 826.0$ 864.5$ 818.0$ 807.1$ 3,315.6$ 892.2$ 891.0$ 1,783.2$ Cost of sales 565.1 603.3 585.1 584.6 2,338.1 632.0 632.1 1,264.1 Gross margin 260.9 261.2 232.9 222.5 977.5 260.2 258.9 519.1 Selling and administrative 164.1 164.6 160.1 161.1 649.9 151.3 157.0 308.3 Operating income 96.8 96.6 72.8 61.4 327.6 108.9 101.9 210.8 Interest expense, net (19.3) (19.5) (19.0) (17.5) (75.3) (16.9) (16.2) (33.1) Other income (expense), net 1.6 1.1 1.5 4.1 8.3 (0.7) 0.7 0.0 Income before income taxes 79.1 78.2 55.3 48.0 260.6 91.3 86.4 177.7 Income tax expense (16.1) (16.3) (10.2) (12.8) (55.4) (20.2) (20.4) (40.6) Net income from continuing operations 63.0 61.9 45.1 35.2 205.2 71.1 66.0 137.1 Net (income) loss attributable to noncontrolling interests (0.4) (0.6) 0.3 0.9 0.2 (0.3) - (0.3) Adjusted Net income attributable to Avient common shareholders - continuing operations 62.6$ 61.3$ 45.4$ 36.1$ 205.4$ 70.8$ 66.0$ 136.8$ Adjusted earnings per share attributable to Avient common shareholders - Diluted 0.68$ 0.66$ 0.49$ 0.39$ 2.23$ 0.77$ 0.72$ 1.48$ Weighted average diluted Shares 92.2 92.4 92.2 92.4 92.1 92.3 92.1 92.2 S E G M E N T D ATA R E C A S T F O R AV I E N T D I S T R I B U T I O N A S A D I S C O N T I N U E D O P E R AT I O N Avient Corporation 5 (In millions) Q1 2021 Q2 2021 Q3 2021 Q4 2021 2021 YTD Q1 2022 Q2 2022 2022 YTD Sales: Color, Additives and Inks 609.3$ 624.4$ 586.6$ 581.3$ 2,401.6$ 649.5$ 649.1$ 1,298.6$ Specialty Engineered Materials 214.7 238.9 231.7 226.3 911.6 243.1 242.3 485.4 Corporate and Eliminations 2.0 1.2 (0.3) (0.5) 2.4 (0.4) (0.4) (0.8) Sales 826.0 864.5 818.0 807.1 3,315.6 892.2 891.0 1,783.2 Gross Margin: Color, Additives and Inks 197.5$ 193.4$ 172.1$ 164.5$ 727.5$ 192.1$ 193.4$ 385.5$ Specialty Engineered Materials 63.1 68.1 61.4 58.3 250.9 68.4 66.0 134.4 Corporate and Eliminations 2.5 (12.9) (17.9) (6.2) (34.5) (6.1) 1.5 (4.6) Gross Margin 263.1 248.6 215.6 216.6 943.9 254.4 260.9 515.3 Selling and Administrative Expense: Color, Additives and Inks 108.7$ 107.1$ 105.3$ 103.3$ 424.4$ 97.6$ 99.8$ 197.4$ Specialty Engineered Materials 30.5 32.3 31.4 31.2 125.4 30.1 30.8 60.9 Corporate and Eliminations 29.5 26.8 26.1 31.9 114.3 24.5 30.2 54.7 Selling and Administrative Expense 168.7 166.2 162.8 166.4 664.1 152.2 160.8 313.0 Operating Income: Color, Additives and Inks 88.8$ 86.3$ 66.8$ 61.2$ 303.1$ 94.5$ 93.6$ 188.1$ Specialty Engineered Materials 32.6 35.8 30.0 27.1 125.5 38.3 35.2 73.5 Corporate and Eliminations (27.0) (39.7) (44.0) (38.1) (148.8) (30.6) (28.7) (59.3) Operating Income 94.4 82.4 52.8 50.2 279.8 102.2 100.1 202.3 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks 116.2$ 111.6$ 93.4$ 87.6$ 408.8$ 120.5$ 119.5$ 240.0$ Specialty Engineered Materials 40.4 43.9 37.9 35.1 157.3 46.1 42.9 89.0 Corporate and Eliminations (25.3) (39.5) (41.9) (34.6) (141.3) (26.8) (26.0) (52.8) Other income (expense) 1.6 1.1 1.6 (5.3) (1.0) (0.6) 1.6 1.0 EBITDA 132.9 117.1 91.0 82.8 423.8 139.2 138.0 277.2 N O N - G A A P R E C O N C I L I AT I O N S F O R R E C A S T H I S T O R I C A L R E S U LT S Avient Corporation 6 (In millions, except per share data) Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Sales $ 826.0 $ - $ 826.0 $ 864.5 $ - $ 864.5 $ 818.0 $ - $ 818.0 $ 807.1 $ - $ 807.1 $ 3,315.6 $ - $ 3,315.6 Gross margin 263.1 (2.2) 260.9 248.6 12.6 261.2 215.6 17.3 232.9 216.6 5.9 222.5 943.9 33.6 977.5 Selling and administrative expense 168.7 (4.6) 164.1 166.2 (1.6) 164.6 162.8 (2.7) 160.1 166.4 (5.3) 161.1 664.1 (14.2) 649.9 Operating income 94.4 2.4 96.8 82.4 14.2 96.6 52.8 20.0 72.8 50.2 11.2 61.4 279.8 47.8 327.6 Interest expense, net (19.3) - (19.3) (19.5) - (19.5) (19.0) - (19.0) (17.5) - (17.5) (75.3) - (75.3) Other income (expense), net 1.6 - 1.6 1.1 - 1.1 1.6 (0.1) 1.5 (5.3) 9.4 4.1 (1.0) 9.3 8.3 Income taxes (16.3) 0.2 (16.1) (13.8) (2.5) (16.3) (2.0) (8.2) (10.2) (16.2) 3.4 (12.8) (48.3) (7.1) (55.4) Net income (loss) attributable to noncontrolling interests (0.4) - (0.4) (0.6) - (0.6) 0.3 - 0.3 0.9 - 0.9 0.2 - 0.2 Net income from continuing operations attributable to Avient shareholders $ 60.0 $ 2.6 $ 62.6 $ 49.6 $ 11.7 $ 61.3 $ 33.7 $ 11.7 $ 45.4 $ 12.1 $ 24.0 $ 36.1 $ 155.4 $ 50.0 $ 205.4 Net income / EPS $ 0.65 0.03 $ 0.68 $ 0.54 0.13 $ 0.66 $ 0.37 0.13 $ 0.49 $ 0.13 $ 0.26 $ 0.39 $ 1.69 0.54 $ 2.23 Weighted-average diluted shares 92.2 92.2 92.2 92.4 92.4 92.4 92.2 92.2 92.2 92.4 92.4 92.4 92.1 92.1 92.1 Three Months Ended December 31, 2021 Year Ended December 31, 2021 Three Months Ended March 31, 2021 Three Months Ended June 30, 2021 Three Months Ended September 30, 2021 N O N - G A A P R E C O N C I L I AT I O N S F O R R E C A S T H I S T O R I C A L R E S U LT S Avient Corporation 7 (In millions, except per share data) Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Avient Special Items Adjusted Avient Sales $ 892.2 $ - $ 892.2 $ 891.0 $ - $ 891.0 $ 1,783.2 $ - $ 1,783.2 Gross margin 254.4 5.8 260.2 260.9 (2.0) 258.9 515.3 3.8 519.1 Selling and administrative expense 152.2 (0.9) 151.3 160.8 (3.8) 157.0 313.0 (4.7) 308.3 Operating income 102.2 6.7 108.9 100.1 1.8 101.9 202.3 8.5 210.8 Interest expense, net (16.9) - (16.9) (16.2) - (16.2) (33.1) - (33.1) Other (expense) income, net (0.6) (0.1) (0.7) 1.6 (0.9) 0.7 1.0 (1.0) 0.0 Income taxes (20.0) (0.2) (20.2) (22.7) 2.3 (20.4) (42.7) 2.1 (40.6) Net income attributable to noncontrolling interests (0.3) - (0.3) - - - (0.3) - (0.3) Net income from continuing operations attributable to Avient shareholders $ 64.4 $ 6.4 $ 70.8 $ 62.8 $ 3.2 $ 66.0 $ 127.2 $ 9.6 $ 136.8 Net income / EPS $ 0.70 0.07 $ 0.77 $ 0.68 0.03 $ 0.72 $ 1.38 0.10 1.48 Weighted-average diluted shares 92.3 92.3 92.3 92.1 92.1 92.1 92.2 92.2 92.2 Three Months Ended March 31, 2022 Three Months Ended June 30, 2022 Six Months Ended June 30, 2022 N O N - G A A P R E C O N C I L I AT I O N S F O R R E C A S T A D J U S T E D E B I T D A Avient Corporation 8 (In millions) EBITDA Reconciliation Q1 2021 Q2 2021 Q3 2021 Q4 2021 YTD 2021 Q1 2022 Q2 2022 YTD 2022 Net income from continuing operations – GAAP 60.4$ 50.2$ 33.4$ 11.2$ 155.2$ 64.7$ 62.8$ 127.5$ Income tax expense 16.3 13.8 2.0 16.2 48.3 20.0 22.7 42.7 Interest expense, net 19.3 19.5 19.0 17.5 75.3 16.9 16.2 33.1 Depreciation and amortization from continuing operations 36.9 33.6 36.6 37.9 145.0 37.6 36.3 73.9 EBITDA 132.9 117.1 91.0 82.8 423.8 139.2 138.0 277.2 Special items, before tax 2.4 14.2 19.9 20.6 57.1 6.6 0.9 7.5 Depreciation and amortization included in special items (0.6) 1.4 (0.9) (1.6) (1.7) (2.1) (1.1) (3.2) Adjusted EBITDA 134.7$ 132.7$ 110.0$ 101.8$ 479.2$ 143.7$ 137.8$ 281.5$ S U M M A R Y O F S P E C I A L I T E M S Avient Corporation 9 (In millions) Q1 2021 Q2 2021 Q3 2021 Q4 2021 2021 YTD Q1 2022 Q2 2022 2022 YTD Cost of sales: Restructuring costs, including accelerated depreciation (1.8)$ (1.5)$ (5.3)$ (6.0)$ (14.6)$ (4.4)$ (2.6)$ (7.0)$ Environmental remediation costs (0.5) (12.5) (9.4) (0.5) (22.9) (2.0) (3.0) (5.0) Reimbursement of previously incurred environmental costs 4.5 - - - 4.5 0.6 7.6 8.2 Acquisition related adjustments - 1.4 (2.6) 0.6 (0.6) - - - Impact on cost of sales 2.2 (12.6) (17.3) (5.9) (33.6) (5.8) 2.0 (3.8) Selling and administrative expense: Restructuring, legal and other (1.3) (1.4) - (4.2) (6.9) 2.0 (1.7) 0.3 Acquisition/divestiture related costs (3.3) (0.2) (2.7) (1.1) (7.3) (2.9) (2.1) (5.0) Impact on selling and administrative expense (4.6) (1.6) (2.7) (5.3) (14.2) (0.9) (3.8) (4.7) Impact on operating income (2.4) (14.2) (20.0) (11.2) (47.8) (6.7) (1.8) (8.5) Other income, net - - 0.1 (9.4) (9.3) 0.1 0.9 1.0 Impact on income before income taxes (2.4) (14.2) (19.9) (20.6) (57.1) (6.6) (0.9) (7.5) Income tax benefit on above special items 0.9 3.4 4.6 4.1 13.0 1.7 0.2 1.9 Tax adjustments (1.1) (0.9) 3.6 (7.5) (5.9) (1.5) (2.5) (4.0) Impact of special items on net income (2.6)$ (11.7)$ (11.7)$ (24.0)$ (50.0)$ (6.4)$ (3.2)$ (9.6)$

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Adjusted Tax Rate, to the most comparable GAAP financial measures on a forward- looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. We also monitor earnings (defined as net income from continuing operations) before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA (EBITDA before the impact of special items) as a supplement to our GAAP measures. 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 1 Three Months Ended December 31, Year Ended December 31, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA 2023 2022 2023 2022 Sales - GAAP $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Pro forma APM adjustments — — — 256.1 Pro forma adjusted sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,653.0 Net income (loss) from continuing operations – GAAP $ 27.6 $ (16.6) $ 76.3 $ 83.1 Income tax (benefit) expense (7.0) (60.8) 11.0 (19.3) Interest expense 26.8 49.4 115.3 119.8 Depreciation and amortization from continuing operations 44.2 48.6 188.8 162.5 EBITDA from continuing operations $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items, before tax 22.4 104.3 114.6 194.0 Interest expense included in special items (0.1) (16.0) (2.3) (26.0) Depreciation and amortization included in special items — (1.5) (1.9) (5.5) Adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma adjusted EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 Pro forma adjusted EBITDA as a percent of sales 15.8 % 13.6 % 16.0 % 16.2 % * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership).

FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $487 $522 Q3 23 Q3 24 $89 $97 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 10 + 7% (+8% excluding FX) + 9% (+11% excluding FX) 18.3% +40 bps *18.7% * * Adjusted EBITDA Margin % • Sales growth driven by winning new product specifications in consumer & packaging, strong underlying demand in healthcare and improving demand in building & construction • Favorable mix and raw material deflation contributed to EBITDA margin expansion SPECIALTY ENGINEERED MATERIALS SEGMENT (Q3 2024 PERFORMANCE VS Q3 2023) $268 $295 Q3 23 Q3 24 $51 $57 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 11 • Sales growth driven by restocking in healthcare & consumer end markets and strong underlying demand for composite applications used in building & construction, energy and defense end markets • Favorable mix contributed to EBITDA margin expansion + 10% (+10% excluding FX) + 12% (+13% excluding FX) 19.0% +40 bps *19.4% * * Adjusted EBITDA Margin % 2024 G U IDA N CE FY 2024 GUIDANCE Previous (Aug 6) Current Adjusted EPS $2.55 to $2.70 $2.63 to $2.67 Adjusted EBITDA $515 to $540 million $525 to $530 million Interest Expense $105 million $104 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures & Investment in S/4 Hana ~$140 million ~$140 million 13 14 • Investor Day to be held December 4, 2024 at the NYSE, beginning at 10AM • The focus will be to do a deep dive on the Company’s strategy • Registration available at www.avient.com/investors 2024 AVIENT INVESTOR DAY AP P EN D IX 17 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 19 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 20 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION US & Canada 52% EMEA 35% Asia 13% 21 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 22 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) 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. We also monitor earnings (defined as net income from continuing operations) before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA (EBITDA before the impact of special items) as a supplement to our GAAP measures. 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 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 Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 38.7 $ 5.1 Income tax expense (benefit) 11.3 (0.1) Interest expense, net 26.9 30.3 Depreciation & amortization 45.1 46.4 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales 15.9 % 16.3 % 1 Three Months Ended September 30, 2024 2023 Sales: Color, Additives and Inks $ 521.5 $ 486.5 Specialty Engineered Materials 294.6 267.9 Corporate (0.9) (0.7) Sales $ 815.2 $ 753.7 Operating income: Color, Additives and Inks $ 75.5 $ 64.5 Specialty Engineered Materials 36.4 30.3 Corporate (34.7) (60.5) Operating income $ 77.2 $ 34.3 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 24.6 Specialty Engineered Materials 20.7 20.5 Corporate 2.5 1.3 Depreciation & amortization $ 45.1 $ 46.4 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 97.4 $ 89.1 Specialty Engineered Materials 57.1 50.8 Corporate (32.2) (59.2) Other (expense) income, net (0.3) 1.0 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.7 % 18.3 % Specialty Engineered Materials 19.4 % 19.0 % 2 Year Ended December 31, 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 Special items, after-tax 79.3 0.86 Amortization expense, after-tax 61.5 0.67 Adjusted net income / EPS $ 216.6 $ 2.36 Adjusted Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Capital expenditures (119.4) Free cash flow 82.2 Taxes paid on gain on sale of business 104.1 Adjusted free cash flow $ 186.3 Year Ended December 31, 2023 Sales: Color, Additives and Inks $ 2,007.4 Specialty Engineered Materials 1,138.2 Corporate (2.8) Sales $ 3,142.8 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.9) Adjusted EBITDA $ 501.8 Adjusted EBITDA as a percent of sales 16.0 % 3 Avient M11 Investor Presentation.pdf IR Deck - AVNT-2024.09.30 (M11) - 11.05.24 11AM.pdf Attachment

Platform operating income mix percentage 2005Y 2008Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 17.6 $ 45.9 Global Color, Additives and Inks 4.3 28.1 43.4 Specialty Platform $ 4.7 $ 45.7 $ 89.3 Performance Products and Solutions 75.7 31.3 62.4 Distribution 19.5 28.1 56.0 SunBelt Joint Venture 91.9 28.6 5.0 Corporate (51.5) (425.1) 20.3 Operating income (loss) GAAP $ 140.3 $ (291.4) $ 233.0 Less: Corporate operating expense (income) 51.5 425.1 (20.3) Operating income excluding Corporate $ 191.8 $ 133.7 $ 212.7 Specialty platform operating mix percentage 2% 34% 42% Pro forma platform operating income mix percentage 2007 Pro forma 2011Y Specialty Platform $ 30.6 $ 89.3 Pro forma ColorMatrix - 27.7 Specialty Platform pro forma ColorMatrix $ 30.6 $ 117.0 Performance Products and Solutions 65.8 62.4 Distribution 22.1 56.0 SunBelt Joint Venture 34.8 5.0 Corporate (73.3) 20.3 Operating income pro forma ColorMatrix $ 80.0 $ 260.7 Less: Corporate and SunBelt operating income 73.3 (25.3) Operating income excluding Corporate operating income $ 153.3 $ 235.4 Specialty platform operating mix percentage 20% 50% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Net Income $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 SunBelt and OxyVinyls equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 Adjusted EPS Q1 2011 Q1 2012 Net Income $ 110.2 $ 20.2 SunBelt equity earnings, after tax (3.7) - Special items, after tax (79.8) 6.1 Tax adjustments (1.5) 0.1 Adjusted net income $ 25.2 $ 26.4 Diluted shares 96.4 90.7 Adjusted EPS $ 0.26 $ 0.29 Platform sales and operating income (OI) 2005 2006 2007 2008 2009 2010 2011 Global Specialty Engineered Materials Sales $ 282.5 $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 503.7 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 786.2 $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,136.3 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 679.2 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (151.1) (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,450.6 $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Pro forma ColorMatrix Sales 196.0 Total sales pro forma ColorMatrix $ 3,059.5 Global Specialty Engineered Materials OI $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 75.7 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.5 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (21.8) (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items (29.7) 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (72.5) (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items 29.7 (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 97.5 $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Operating income pro forma ColorMatrix 27.7 Operating income adjusted pro forma ColorMatrix $ 208.3 Global Specialty Engineered Materials - OI as a percentage of sales 0.1% 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI as a percentage of sales 0.9% 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI as a percentage of sales 0.6% 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% Specialty platform OI as a percentage of sales - pro forma ColorMatrix 8.9% Global Color, Additives and Inks OI as a percentage of sales – pro forma ColorMatrix 9.6% PP&S operating OI as a percentage of sales 6.7% 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI as a percentage of sales 2.9% 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted, as a percentage of sales 4.0% 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% PolyOne OI adjusted, pro forma for ColorMatrix, as a percent of sales 6.8% Operating income (OI) Q1 2011 Q1 2012 Global Specialty Engineered Materials OI $ 14.0 $ 11.8 Global Color, Additives and Inks OI 11.2 17.3 Specialty Platform OI $ 25.2 $ 29.1 Performance Products and Solutions OI 14.3 17.8 PolyOne Distribution OI 14.7 16.7 Corporate and eliminations (1.6) (10.2) Special items 127.2 (8.5) Operating income (loss) GAAP $ 179.8 $ 44.9 Research and Development (R&D) – Pro forma ColorMatrix 2011 PolyOne R&D $ 36.9 ColorMatrix R&D 3.6 Pro forma R&D $ 40.5 Gross Margin as a percentage of Sales 2006 2011 2011 Pro forma ColorMatrix Specialty platform sales $ 877.1 $ 1,119.7 $ 1,315.7 Specialty platform gross margin 125.2 263.4 345.9 Specialty platform gross margin percentage 14.3 % 23.5 % 26.3 % Average Debt Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne Debt $ 452.9 $ 432.9 $ 432.9 $ 432.9 $ 707.0 n/a Pro forma ColorMatrix 274.1 274.1 274.1 274.1 - n/a Total Debt $ 727.0 $ 707.0 $ 707.0 $ 707.0 $ 707.0 $ 711.0 Average Equity Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne $ 516.0 $ 615.2 $ 629.6 $ 608.5 $ 588.3 $ 591.5

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