Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. A reconciliation of these measures to their most directly comparable GAAP measures is provided in the tables below. 1 Reconciliation of EBITDA by Segment Year Ended 2020 2019 2020 2019 Sales: Color, Additives and Inks $ 525.8 $ 226.7 $ 1,502.9 $ 1,003.8 Specialty Engineered Materials 190.6 177.5 708.8 745.7 Distribution 305.1 272.4 1,110.3 1,192.2 Corporate and eliminations (24.5) (18.0) (79.9) (79.0) Sales $ 997.0 $ 658.6 $ 3,242.1 $ 2,862.7 Operating income: Color, Additives and Inks $ 57.5 $ 27.2 $ 180.8 $ 147.4 Specialty Engineered Materials 30.4 18.8 94.4 83.7 Distribution 18.0 17.0 69.5 75.4 Corporate and eliminations (40.9) (42.5) (155.4) (149.7) Operating Income $ 65.0 $ 20.5 $ 189.3 $ 156.8 Items Below Operating Income in Corporate: Other income, net $ 11.7 $ 10.7 $ 24.3 $ 12.1 Depreciation & amortization: Color, Additives and Inks $ 27.3 $ 10.7 $ 75.1 $ 42.7 Specialty Engineered Materials 7.4 7.0 30.0 29.5 Distribution 0.3 0.1 0.7 0.5 Corporate and eliminations 2.8 1.0 9.3 5.4 Depreciation & Amortization $ 37.8 $ 18.8 $ 115.1 $ 78.1 EBITDA: Color, Additives and Inks $ 84.8 $ 37.9 $ 255.9 $ 190.1 Specialty Engineered Materials 37.8 25.8 124.4 113.2 Distribution 18.3 17.1 70.2 75.9 Corporate and eliminations (26.4) (30.8) (121.8) (132.2) EBITDA $ 114.5 $ 50.0 $ 328.7 $ 247.0 EBITDA as a % of sales: Color, Additives and Inks 16.1 % 16.7 % 17.0 % 18.9 % Specialty Engineered Materials 19.8 % 14.5 % 17.6 % 15.2 % Distribution 6.0 % 6.3 % 6.3 % 6.4 % Corporate and eliminations nm nm nm nm Total Company 11.5 % 7.6 % 10.1 % 8.6 % nm - not meaningful Three Months Ended December 31, Year Ended December 31, Reconciliation to Adjusted EBITDA: 2020 2019 2020 2019 Net income from continuing operations – GAAP $ 74.7 $ 6.4 $ 133.8 $ 75.7 Income tax expense (17.3) 12.9 5.2 33.7 Interest expense 19.3 11.9 74.6 59.5 Depreciation and amortization from continuing operations 37.8 18.8 115.1 78.1 EBITDA $ 114.5 $ 50.0 $ 328.7 $ 247.0 Special items, before tax 4.2 15.0 66.2 61.7 Interest expense included in special items — — (10.1) — Accelerated depreciation included in special items (0.7) — (3.2) — Adjusted EBITDA $ 118.0 $ 65.0 $ 381.6 $ 308.7 Three Months Ended Reconciliation of Adjusted Earnings per Share: Avient Special Adjusted Sales $ 997.0 $ — $ 997.0 Operating income $ 65.0 $ 14.6 $ 79.6 Interest expense, net (19.3) — (19.3) Other income, net 11.7 (10.4) 1.3 Income taxes 17.3 (30.9) (13.6) Net income from continuing operations attributable to Avient shareholders $ 74.2 $ (26.7) $ 47.5 Weighted average diluted shares 92.1 Adjusted EPS - excluding special items $ 0.52 Reconciliation of Adjusted EBITDA from continuing operations: Operating income and other income, net $ 76.7 $ 4.2 $ 80.9 Depreciation and amortization 37.8 (0.7) 37.1 EBITDA from continuing operations $ 114.5 $ 3.5 $ 118.0 EBITDA as a % of sales 11.8 % 3 Three Months Ended Reconciliation of Pro Forma Adjusted Special Adjusted Clariant MB Pro Forma Pro Forma Adjusted Sales $ 658.6 $ — $ 658.6 $ 263.5 $ 922.1 Operating income $ 20.5 $ 24.6 $ 45.1 $ 13.2 $ 58.3 Interest expense, net (11.9) — (11.9) (11.1) (23.0) Other income, net 10.7 (9.6) 1.1 — 1.1 Income taxes (12.9) 4.9 (8.0) (0.5) (8.5) Net income from continuing operations attributable to Avient shareholders $ 6.4 $ 19.9 $ 26.3 $ 1.6 $ 27.9 Weighted average diluted shares 77.5 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 92.8 Pro forma adjusted EPS $ 0.30 Reconciliation of Pro Forma Adjusted Operating income and other income, net $ 31.2 $ 15.0 $ 46.2 $ 13.2 $ 59.4 Depreciation and amortization 18.8 — 18.8 15.1 33.9 EBITDA from continuing operations $ 50.0 $ 15.0 $ 65.0 $ 28.3 $ 93.3 EBITDA as a % of sales 10.1 % Reconciliation of Pro Forma Adjusted Special Adjusted Clariant MB Pro Forma Pro Forma Adjusted Sales $ 3,242.1 $ — $ 3,242.1 $ 540.4 $ 3,782.5 Operating income $ 189.3 $ 73.7 $ 263.0 $ 45.0 $ 308.0 Interest expense, net (74.6) 10.1 (64.5) (18.1) (82.6) Other income, net 24.3 (17.6) 6.7 — 6.7 Income taxes (5.2) (41.4) (46.6) (6.2) (52.8) Net income attributable to noncontrolling interests (1.8) — (1.8) — (1.8) Net income from continuing operations attributable to Avient shareholders $ 132.0 $ 24.8 $ 156.8 $ 20.7 $ 177.5 Weighted average diluted shares 90.6 Impact to diluted shares from January 2020 equity offering 1.5 Pro forma weighted average diluted shares 92.1 Pro forma adjusted EPS $ 1.93 Reconciliation of Pro Forma Adjusted Operating income and other income, net $ 213.6 $ — $ 56.1 $ 269.7 $ 45.0 $ — $ 314.7 Depreciation and amortization 115.1 (3.2) 111.9 30.1 142.0 EBITDA from continuing operations $ 328.7 $ 52.9 $ 381.6 $ 75.1 $ 456.7 EBITDA as a % of sales 12.1 % 4 Reconciliation of Pro Forma Adjusted Special Adjusted Clariant MB Pro Forma Pro Forma Adjusted Sales $ 2,862.7 $ — $ 2,862.7 $ 1,118.6 $ 3,981.3 Operating income $ 156.8 $ 71.7 $ 228.5 $ 72.9 $ 301.4 Interest expense, net (59.5) — (59.5) (33.4) (92.9) Other income, net 12.1 (10.0) 2.1 — 2.1 Income taxes (33.7) (5.9) (39.6) (9.1) (48.7) Net income attributable to noncontrolling interests (0.2) — (0.2) — (0.2) Net income from continuing operations attributable to Avient shareholders $ 75.5 $ 55.8 $ 131.3 $ 30.4 $ 161.7 Weighted average diluted shares 77.7 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 93.0 Pro forma adjusted EPS $ 1.74 Reconciliation of Pro Forma Adjusted Operating income and other income, net $ 168.9 $ — $ 61.7 $ 230.6 $ 72.9 $ — $ 303.5 Depreciation and amortization 78.1 — 78.1 60.3 138.4 EBITDA from continuing operations $ 247.0 $ 61.7 $ 308.7 $ 133.2 $ 441.9 EBITDA as a % of sales 11.1 % March 31, 2020 Reconciliation of Pro Forma Adjusted Special Adjusted Clariant MB Pro Forma Pro Forma Adjusted Sales $ 711.5 $ — $ 711.5 $ 279.4 $ 990.9 Operating income 52.8 9.7 62.5 23.0 85.5 Interest expense, net (9.4) — (9.4) (12.8) (22.2) Other income, net 1.6 (0.1) 1.5 — 1.5 Income taxes (11.9) (1.0) (12.9) (2.4) (15.3) Net income from continuing operations attributable to Avient shareholders $ 33.1 $ 8.6 $ 41.7 $ 7.8 $ 49.5 Weighted average diluted shares 86.7 Impact to diluted shares from January 2020 equity offering 6.1 Pro forma weighted average diluted shares 92.8 Pro forma adjusted EPS $ 0.53 5 Three Months Ended December 31, 2019 Year Ended Reconciliation of pro forma sales, operating income, and EBITDA: CAI Clariant MB Pro Forma Pro Forma CAI CAI Clariant MB Pro Forma Pro Forma Sales $ 226.7 $ 263.5 $ 490.2 $ 1,003.8 $ 1,118.6 $ 2,122.4 Operating income $ 27.2 $ 13.2 $ 40.4 $ 147.4 $ 72.9 $ 220.3 EBITDA $ 37.9 $ 28.3 $ 66.2 $ 190.1 $ 133.2 $ 323.3 EBITDA as a % of sales 13.5 % 15.2 % Year Ended December 31, 2020 Reconciliation of pro forma sales, operating income, and EBITDA: CAI Clariant MB Pro Forma Pro Forma Sales $ 1,502.9 $ 540.4 $ 2,043.3 Operating income $ 180.8 $ 45.0 $ 225.8 EBITDA $ 255.9 $ 75.1 $ 331.0 EBITDA as a % of sales 16.2 % Free cash flow, defined as cash provided by operating activities excluding items associated with acquisitions and divestitures, less capital expenditures, is considered a non-GAAP financial measure.

Bazen kişiler kendilerini resmi görevli olarak görmeyebilir veya kendi devletleri tarafından bu şekilde ele alınmayabilir, ancak yine de yukarıda tanımlanan devlet görevlisi tanımına uyabilir. Ticari Rüşvet Avient, resmi görevlilere rüşvet verilmesini yasaklamanın yanı sıra, ticari faaliyetlerde de rüşveti ve yolsuzluğu yasaklamıştır. Bu nedenle, Avient’in hem iş ilişkisi öncesinde hem de esnasında, temsilci ya da üçüncü taraflara karşı durum tespiti yapması önemlidir.

& Canada 51% Latin America 2021 YTD SEGMENT, END MARKET AND GEOGRAPHY 29 GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and EBITDA of $3,617M and $455M, respectively, include intercompany sales eliminations and corporate costs All charts reflect YTD financials through September 30 $1,820M $321M $691M $127M $1,206M $72M Sales Adjusted EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $455M$3,617M 34% 21% 7% Building & 9% 2% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 YTD REVENUE | $1 .8 BILL ION 31% 42% 21% Latin America END MARKET REGION 30 S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 28% 11% Building & 7% 2021 YTD REVENUE | $691 MILLION END MARKET 55% 20% REGION 31 DI S TR IBU T I ON 26% 22% 20% Building and 81% Latin America END MARKET REGION K E Y S U P P L I ER S 2021 YTD REVENUE | $1 .2 BILL ION 32 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 27% Building & 2% Energy (16% of sales) 31% 17% Building & (25% of sales) 33 19% 17% Building & US & Canada (51% of sales) 13% 42% 33% 3% Building & LATAM (8% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) September 30, 2021 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted 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 September 30, 2020 Reconciliation to Condensed Consolidated Statements of Income GAAP Special Adjusted Operating income $ 33.5 $ 40.4 $ 73.9 Income from continuing operations before income taxes $ 5.3 $ 50.0 $ 55.3 Income tax expense - GAAP (2.7) — (2.7) Income tax impact of special items — (12.7) (12.7) Tax adjustments — 3.0 3.0 Net income attributable to noncontrolling interests (0.9) — (0.9) Net income from continuing operations attributable to Avient shareholders $ 1.7 $ 40.3 $ 42.0 Net income / EPS $ 0.02 $ 0.44 $ 0.46 Weighted-average diluted shares 91.9 91.9 91.9 Three Months Ended Three Months Nine Months Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2021 2020 June 30, 2021 September 30, 2021 2020 2019 2018 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 69.4 $ 201.7 $ 133.8 $ 75.7 $ 87.4 Income tax expense 8.5 2.7 20.4 51.8 5.2 33.7 14.4 Interest expense 19.0 29.7 19.5 57.8 74.6 59.5 62.8 Debt extinguishment cost — — — — — — 1.1 Depreciation and amortization from continuing operations 36.8 36.5 33.8 107.7 115.0 78.1 72.6 EBITDA $ 116.9 71.5 $ 143.1 $ 419.0 $ 328.6 $ 247.0 $ 238.3 Special items, before tax 19.9 50.0 14.2 36.5 66.2 61.7 59.5 Interest expense included in special items — (9.6) — — (10.1) — — Depreciation and amortization included in special items (0.9) (1.3) 1.4 (0.1) (3.2) — (3.0) Adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 381.6 $ 308.7 $ 294.8 Clariant MB pro forma adjustments(1) — — — — 75.1 133.2 141.5 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 158.7 $ 455.4 $ 456.7 $ 441.9 $ 436.3 (1) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Reconciliation of EBITDA by Segment Nine Months December 31, 2021 2020 2021 2020 2019 2018 Sales: Color, Additives and Inks $ 586.6 $ 493.8 $ 1,820.3 $ 1,502.9 $ 1,003.8 $ 1,046.5 Specialty Engineered Materials 233.6 174.1 690.7 708.8 745.7 645.8 Distribution 438.8 276.9 1,205.9 1,110.3 1,192.2 1,265.4 Corporate and eliminations (39.2) (20.3) (99.6) (79.9) (79.0) (76.7) Sales $ 1,219.8 $ 924.5 $ 3,617.3 $ 3,242.1 $ 2,862.7 $ 2,881.0 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 31.7 24.7 103.2 94.4 83.7 72.3 Distribution 23.8 17.5 71.5 69.5 75.4 71.5 Corporate and eliminations (43.6) (59.2) (109.4) (155.4) (149.7) (123.7) Operating income $ 78.7 $ 33.5 $ 307.2 $ 189.3 $ 156.8 $ 178.6 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 24.3 $ 12.1 $ (12.9) Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 75.1 $ 42.7 $ 44.3 Specialty Engineered Materials 7.9 7.5 23.8 30.0 29.5 23.2 Distribution 0.2 0.2 0.6 0.7 0.5 0.7 Corporate and eliminations 2.1 2.5 4.1 9.2 5.4 4.4 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 115.0 $ 78.1 $ 72.6 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 39.6 32.2 127.0 124.4 113.2 95.5 Distribution 24.0 17.7 72.1 70.2 75.9 72.2 Corporate and eliminations (41.5) (56.7) (105.3) (146.2) (144.3) (119.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 17.6 % 15.2 % 14.8 % Distribution 5.5 % 6.4 % 6.0 % 6.3 % 6.4 % 5.7 % Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Year Ended December 31, 2020 2019 2018 Sales: Color, Additives and Inks $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(1) 540.4 1,118.6 1,209.8 Pro forma sales $ 2,043.3 $ 2,122.4 $ 2,256.3 Operating income: Color, Additives and Inks $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(1) 45.0 72.9 80.3 Pro forma operating income $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(1) 30.1 60.3 61.2 Pro forma depreciation & amortization $ 105.2 $ 103.0 $ 105.5 EBITDA Color, Additives and Inks $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(1) 75.1 133.2 141.5 Pro forma EBITDA $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 16.2 % 15.2 % 15.3 % December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Sales $ 3,242.1 $ — $ 3,242.1 $ 540.4 $ 3,782.5 Operating income $ 189.3 $ 73.7 $ 263.0 $ 45.0 $ 308.0 Interest expense, net (74.6) 10.1 (64.5) (18.1) (82.6) Other income, net 24.3 (17.6) 6.7 — 6.7 Income taxes (5.2) (41.4) (46.6) (6.2) (52.8) Net income attributable to noncontrolling interests (1.8) — (1.8) — (1.8) Net income from continuing operations attributable to Avient shareholders $ 132.0 $ 24.8 $ 156.8 $ 20.7 $ 177.5 Weighted average diluted shares 90.6 Impact to diluted shares from January 2020 equity offering 1.5 Pro forma weighted average diluted shares 92.1 Pro forma adjusted EPS $ 1.93 December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Adjusted Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Sales $ 2,862.7 $ — $ 2,862.7 $ 1,118.6 $ 3,981.3 Operating income $ 156.8 $ 71.7 $ 228.5 $ 72.9 $ 301.4 Interest expense, net (59.5) — (59.5) (33.4) (92.9) Other income, net 12.1 (10.0) 2.1 — 2.1 Income taxes (33.7) (5.9) (39.6) (9.1) (48.7) Net income attributable to noncontrolling interests (0.2) — (0.2) — (0.2) Net income from continuing operations attributable to Avient shareholders $ 75.5 $ 55.8 $ 131.3 $ 30.4 $ 161.7 Weighted average diluted shares 77.7 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 93.0 Pro forma adjusted EPS $ 1.74 AVNT Q3 2021 Earnings Presentation.pdf AVNT Q3 2021 Earnings Presentation.pdf Final 10.27 606pm Q3 21 IR Deck Version v1.pdf

Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 37 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.9 14.6 13.7 13.0 11.9 8.8 18.7 17.4 11.8 10.0 9.7 9.1 8.0 7.9 01 1) 01 8) 02 3) 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. Three Months Ended March 31, 2023 Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 20.8 $ 0.23 $ 64.4 $ 0.70 Special items, after tax 22.3 0.24 6.4 0.07 Amortization expense, after-tax 15.1 0.16 $ 10.8 $ 0.12 Adjusted net income / EPS $ 58.2 $ 0.63 $ 81.6 $ 0.89 March 31, Reconciliation of Pro Forma Sales 2023 2022 Sales $ 845.7 $ 892.2 APM pro forma adjustments — 94.9 Pro forma sales $ 845.7 $ 987.1 1 Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Net income from continuing operations – GAAP $ 21.3 $ 64.7 Income tax expense 7.7 20.0 Interest expense, net 28.8 16.9 Depreciation and amortization 50.5 37.6 EBITDA from continuing operations $ 108.3 $ 139.2 Special items, before tax 27.3 6.7 Depreciation and amortization included in special items (1.8) (2.1) Adjusted EBITDA $ 133.8 $ 143.8 Pro forma APM adjustments — 32.0 Pro forma adjusted EBITDA $ 133.8 $ 175.8 Pro forma adjusted EBITDA as a % of sales 15.8 % 17.8 % 2023 2022 Sales: Color, Additives and Inks $ 537.0 $ 649.5 Specialty Engineered Materials 309.7 243.1 Corporate (1.0) (0.4) Sales $ 845.7 $ 892.2 Operating income: Color, Additives and Inks $ 65.6 $ 94.5 Specialty Engineered Materials 43.1 38.3 Corporate (51.6) (30.6) Operating income $ 57.1 $ 102.2 Depreciation & amortization: Color, Additives and Inks $ 25.8 $ 26.0 Specialty Engineered Materials 21.2 7.8 Corporate 3.5 3.8 Depreciation & Amortization $ 50.5 $ 37.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 91.4 $ 120.5 Specialty Engineered Materials 64.3 46.1 Corporate (48.1) (26.8) Other income (expense), net 0.7 (0.6) EBITDA $ 108.3 $ 139.2 AVNT Fermium Conference - May 2023.pdf AVNT Q1 2023 Earnings Presentation.pdf AVNT Q1 2023 Earnings Presentation 5.2 221pm IR Deck - AVNT-2023.03.31 (002).pdf

Net debt to adjusted EBITDA is calculated as follows: Six Months Ended Twelve Months Ended Six Months Ended Trailing Twelve Months (TTM) Ended (In millions) March 31, 2014 December 31, 2014 March 31, 2015 March 31, 2015 Short-term portion and current portion of long-term debt $ 12.7 $ 61.8 $ 61.8 Long-term debt 967.9 962.0 996.4 Less: Cash and cash equivalents (261.5) (238.6) (236.8) Net Debt $ 719.1 785.2 821.4 Income before income taxes $ 73.2 $ 88.4 $ 116.7 $ 131.9 Interest expense, net 31.2 62.2 32.3 63.3 Depreciation and amortization 72.2 123.9 50.1 101.8 Special items, impact on operating income 62.2 164.9 21.2 123.9 Accelerated depreciation included in special items (20.5) (23.1) (0.3) (2.9) Adjusted EBITDA $ 218.3 $ 416.3 $ 220.0 $ 418.0 Net Debt/TTM Adjusted EBITDA 2.0 POL IR Presentation - Jefferies Industrials Conference 2015 website ��PolyOne Investor Presentation�Jefferies 2015 Industrials Conference�August 2015�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Confirmation of Our Strategy Strategy and Execution Drive Results Proof of Performance & 2020 Goals Platinum Vision: Pathway to Accelerated Growth Innovation Drives Earnings Growth Megatrends Aligned with Key End Markets A Rich Pipeline of Opportunity Debt Maturities & Pension Funding Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return PolyOne Core Values Why Invest In PolyOne?

Net debt to adjusted EBITDA is calculated as follows: Three Months Twelve Months Three Months Trailing Twelve Months (TTM) (In millions) March 31, 2014 December 31, 2014 March 31, 2015 March 31, 2015 Short-term portion and current portion of long-term debt $ 12.8 $ 61.8 $ 61.9 Long-term debt 968.1 962.0 1,049.2 Less: Cash and cash equivalents (238.3) (238.6) (226.4) Net Debt $ 742.6 785.2 884.7 Income before income taxes $ 39.9 $ 88.4 $ 53.3 $ 101.8 Interest expense, net 15.5 62.2 16.1 62.8 Depreciation and amortization 32.8 123.9 25.1 116.2 Special items, impact on operating income 22.9 164.9 9.3 151.3 Accelerated depreciation included in special items (6.8) (23.1) (0.1) (16.4) Adjusted EBITDA $ 104.3 $ 416.3 $ 103.7 $ 415.7 Net Debt/TTM Adjusted EBITDA 2.1 POL IR Presentation - Updated for 2015 - 5-5-15 WF ��PolyOne Investor Presentation�Wells Fargo Industrial & Construction Conference�May 2015�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Confirmation of Our Strategy Strategy and Execution Drive Results Proof of Performance & 2015 Goals Innovation Drives Earnings Growth Megatrends Aligned with Key End Markets A Rich Pipeline of Opportunity Debt Maturities & Pension Funding – 3/31/15 Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return PolyOne Core Values Why Invest In PolyOne?

Net debt to adjusted EBITDA is calculated as follows: Three Months Twelve Months Three Months Trailing Twelve Months (TTM) (In millions) March 31, 2014 December 31, 2014 March 31, 2015 March 31, 2015 Short-term portion and current portion of long-term debt $ 12.8 $ 61.8 $ 61.9 Long-term debt 968.1 962.0 1,049.2 Less: Cash and cash equivalents (238.3) (238.6) (226.4) Net Debt $ 742.6 785.2 884.7 Income before income taxes $ 39.9 $ 88.4 $ 53.3 $ 101.8 Interest expense, net 15.5 62.2 16.1 62.8 Depreciation and amortization 32.8 123.9 25.1 116.2 Special items, impact on operating income 22.9 164.9 9.3 151.3 Accelerated depreciation included in special items (6.8) (23.1) (0.1) (16.4) Adjusted EBITDA $ 104.3 $ 416.3 $ 103.7 $ 415.7 Net Debt/TTM Adjusted EBITDA 2.1 Goldman Sachs - May 19 2015 r4 Goldman Sachs - May 19 2015 POL IR Presentation - Updated for 2015 - 5-13-15 GS ��PolyOne Investor Presentation�Goldman Sachs Basic Materials Conference�May 2015�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Confirmation of Our Strategy Strategy and Execution Drive Results Proof of Performance & 2020 Goals Platinum Vision: Pathway to Accelerated Growth Innovation Drives Earnings Growth Megatrends Aligned with Key End Markets A Rich Pipeline of Opportunity Debt Maturities & Pension Funding Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return PolyOne Core Values Why Invest In PolyOne?

Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 10.8 16.1 15.5 14.1 14.0 10.3 21.0 19.0 14.3 12.1 11.8 11.7 11.5 9.7 11 21 23 PM AV FM Avient Historic Multiple Avient Specialty Other Specialty / AP P E N DI X 30 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 BILLION US & Canada 34% 38% END MARKET REGION 33 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 BILLION US & Canada 52% 35% 34 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 35 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. Three Months Ended September 30, 2023 Three Months Ended September 30, 2022 Reconciliation to Condensed Consolidated Statements of Income: $ EPS $ EPS Net income (loss) from continuing operations attributable to Avient shareholders $ 5.1 $ 0.06 $ (27.4) $ (0.30) Special items, after tax 32.0 0.35 68.3 0.75 Amortization expense, after-tax 15.2 0.16 $ 13.4 $ 0.14 Adjusted net income / EPS $ 52.3 $ 0.57 $ 54.3 $ 0.59 September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Sales - GAAP $ 753.7 $ 823.3 Pro Forma APM adjustments — 60.7 Pro forma adjusted sales $ 753.7 $ 884.0 Net income from continuing operations – GAAP $ 5.1 $ (27.8) Income tax (benefit) expense (0.1) (1.2) Interest expense, net 30.3 37.3 Depreciation and amortization 46.4 39.8 EBITDA from continuing operations $ 81.7 $ 48.1 Special items, before tax 43.2 82.0 Interest expense included in special items (2.2) (10.0) Depreciation and amortization included in special items — (0.8) Adjusted EBITDA $ 122.7 $ 119.3 Pro forma APM adjustments — 17.2 Pro forma adjusted EBITDA $ 122.7 $ 136.5 Pro forma adjusted EBITDA as a % of sales 16.3 % 15.4 % 1 Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2018 Sales $ 2,622.4 $ 3,533.4 Net income from continuing operations – GAAP $ 133.5 $ 160.8 Income tax expense 29.7 36.4 Interest expense, net 63.1 62.8 Depreciation and amortization 57.1 91.5 EBITDA from continuing operations $ 283.4 $ 351.5 Special items, before tax (34.0) 59.5 Depreciation and amortization included in special items — (3.0) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 408.0 Adjusted EBITDA as a % of sales 5.4 % 11.5 % Reconciliation to EBITDA and Adjusted EBITDA: December 31, 2022 Net loss from continuing operations – GAAP $ (16.6) Income tax benefit (60.8) Interest expense, net 49.4 Depreciation and amortization 48.6 EBITDA from continuing operations $ 20.6 Special items, before tax 104.3 Interest expense included in special items (16.0) Depreciation and amortization included in special items (1.5) Adjusted EBITDA $ 107.4 Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended December 31, 2022 Net loss from continuing operations attributable to Avient shareholders $ (17.0) Special items, after tax 38.3 Amortization expense, after-tax 14.6 Adjusted net income from continuing operations excluding special items 35.9 Pro forma adjustments* 2.5 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 38.4 Weighted average diluted shares 91.7 Pro forma adjusted EPS - excluding special items pro forma for APM acquisition $ 0.42 * Pro forma adjustment to reflect APM results for the period before Avient ownership including the impacts of debt financing and paydown of debt with net proceeds from the Distribution sale. 2 AVNT January IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition What we do: We are a formulator Slide Number 7 Avient protective materials �First Year Slide Number 9 Slide Number 10 Slide Number 11 Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 Slide Number 23 Slide Number 24 Slide Number 25 Avient is asset light Free cash flow conversion Multiple expansion Slide Number 29 Slide Number 30 Slide Number 31 2022 pro forma segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 35 IR Deck - AVNT-2023.09.30 Non GAAP Recs.pdf Attachment

SOCIETE A RESPONSABILITE LIMITEE 5.Nazwa rejestru, numer w rejestrze, określenie ogranu prowadzącego rejestr i przechowującego akta przedsiębiorcy zagranicznego REGISTRE DE COMMERCE ET DES SOCIETES B226205 LUXEMBOURG BUSINESS REGISTERS G.I.E. 6.Prawo państwa właściwego dla przedsiębiorcy zagranicznego, jeśli przedsiębiorca nie podlega prawu jednego z państw członkowskich UE lub EFTA - stron umowy o EOG WIELKIE KSIĘSTWO LUKSEMBURGA 7.Dane o wcześniejszej rejestracji ------ 8.Czy przedsiębiorca prowadzi działalność gospodarczą z innymi podmiotami na podstawie umowy spółki cywilnej? ROUTE DE BASTOGNE, nr 19, lok. ---, kod L-9638, poczta POMMERLOCH 4.Adres poczty elektronicznej ­­­­­­ 5.Adres strony internetowej ­­­­­­ Dział 2 Rubryka 1 ­ Organ uprawniony do reprezentowania zagranicznego przedsiębiorcy 1.Nazwa organu uprawnionego do reprezentowania podmiotu ZARZĄD 2.Sposób reprezentacji zagranicznego Z ZASTRZEŻENIEM USTAWODASTWA OBOWIĄZUJĄCEGO W WIELKIM KSIĘSTWIE LUKSEMBURGA ORAZ POSTANOWIEŃ STATUTU, SPÓŁKA REPREZENTOWANA JEST W SPOSÓB WAŻNY WOBEC OSÓB TRZECICH I WIĄŻĄCE DLA SPÓŁKI WOBEC OSÓB TRZECICHCH JEST : (1) W PRZYPADKU, GDY SPÓŁKA MA JEDNEGO ZARZĄDZAJĄCEGO, INDYWIDUALNE ZŁOŻENIE PODPISU PRZEZ JEDYNEGO ZARZĄDZAJĄCEGO; (2) W PRZYPADKU GDY SPÓŁKA MA WIĘCEJ NIŻ JEDNEGO (1) ZARZĄDZAJĄCEGO, INYWIDUALNE ZŁOŻENIE PODPISU PRZEZ DOWOLNEGO ZARZĄDZAJĄCEGO, JEDAKŻE POD WARUNKIEM, ŻE W PRZYPADKU, GDYBY MIANOWANO ZARZĄDZAJĄCYCH RÓŻNYCH KATEGORII ( A MIANOWICIE ZARZĄDZAJĄCYCH KATEGORII A I ZARZĄDZAJACYCH KATEGORII B), RÓWNIEŻ INDYWIDUALNE ZŁOŻENIE PODPISU PRZEZ DOWOLNEGO ZARZĄDZAJĄCEGO ( W TYM W DRODZE REPREZENTACJI); (3) INDYWIDUALNE ZŁOŻENIE PODPISU PRZEZ DOWOLNĄ OSOBĘ, KTÓRA ZOSTAŁA DO TEGO UPEŁNOMOCNIONA NA MOCY ARTYKUŁU 11.

Reconciliation to Adjusted EPS Excluding Special Items and Impacts of February 2020 Equity Offering Three Months Ended March 31, 2020 Net income from continuing operations – GAAP $ 33.1 Special items, after tax(1) 8.6 After tax interest income earned on equity proceeds, included in Interest expense, net (0.7) Adjusted net income excluding special items and impact of interest income on equity proceeds $ 41.0 Diluted weighted-average shares used to compute earnings per common share 86.7 Weighted-average impact of 15.3 million shares issued in February 2020 equity offering (9.3) Diluted weighted-average shares excluding impact of shares issued in February 2020 equity offering 77.4 Adjusted EPS - excluding special items and the net impact of equity offering $ 0.53 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data)