Q1 2023 (TOTAL COMPANY) $846 $829 $134 $143 17.3% (in millions) $0.63 $0.76 (in millions) + 7% + 21% Sales Adjusted EBITDA Adjusted EPS 9 - 2% 15.8% +150 bps Q1 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $537 $515 $91 $97 18.8% (in millions) (in millions) + 7% 10 - 4% 17.0% +180 bps • Year over year demand continues to improve for the segment but slowly due to continued weakness in Europe • Raw material deflation & cost reduction actions primary drivers of adjusted EBITDA growth and margin expansion of +180 bps vs Q1 2023 Q1 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $310 $314 $64 $73 23.2% (in millions) (in millions) + 14% 11 + 1% 20.8% +240 bps • Sales growth in defense end market offset by weaker demand in telecommunications end market • Raw material deflation and favorable mix impact from defense sales primary drivers of adjusted EBITDA growth and margin expansion of +240 bps vs Q1 2023 Q1 EBITDA BRIDGE (TOTAL COMPANY) 12 $ millions CAI: Price / Mix (1) Deflation 16 SEM: Price / Mix 4 Deflation 7 Net Price Benefit 26 Wage/Other Inflation (9) FX (2) Q1 2024 $143 Adjusted EBITDA Q1 2023 $ 134 Demand (6) • Positive net price benefit: o Favorable raw material deflation in both segments • Wage and other inflation more than offset cost reductions/synergies 2024 G U IDA N CE FY 2024 GUIDANCE Original Revised Adjusted EBITDA $505 to $535 million $510 to $535 million Adjusted EPS $2.40 to $2.65 $2.50 to $2.65 Interest Expense $105 to $110 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 14 Q2 2024: Adjusted EPS of $0.71 CE O “TO P O F M IN D ” FO CU S ARE A S AREAS OF FOCUS 16 +7% Drive Profitable Organic Top-Line Growth with Margin Expansion Amplify Innovation Build Leadership & Talent Pipeline AP P EN D IX 19 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer 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% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 21 (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 34% 37% 21% END MARKET REGION 22 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 23 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 24 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.

Thus far, the insert molding data presented here is very encouraging and it is determined that these novel TPEs will exceed expectations in two-shot molding environments as well. R&D Chemist in generating a bulk of the presented data are hereby acknowledged.

FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT $487 $522 $89 $97 (in millions) (in millions) 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 $268 $295 $51 $57 (in millions) (in millions) 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 TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer 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% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 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 34% 37% 21% END MARKET REGION 20 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 21 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 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.

● Strong balance sheet and freff e cash flow, as total cash and liquidity ended the year at $227 million and $613 million, respectively. The second independent source of data that we used to augment the peer proxy analysis was the Consultant’s analysis of competitive market data relating to other applicable general industries. The CEOmakes his recommendations in conjunction with the marketplace data.

LOOK TO US FOR SUPPORT WITH: Testing and Validation Fully accredited, in-house testing capabilities to generate data for insight into material behavior, environmental effects, and more Regulatory Coordination Dedicated product stewardship team assisting with new product approvals to reduce regulatory overhead and minimize risk Application Development Technical Service Technical experts specifically trained to work directly with your team in solving definitive application challenges Field Technical Service Onsite support for tool design, startup, and production optimization to gain manufacturing efficiencies and resolve technical issues Color and Additive Design Services Trend and color insights, and product development assistance to optimize design and gain speed to market Sustainability Innovative materials and solutions to help you meet your sustainability goals Copyright © 2024, Avient Corporation.

We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT COLOR Key Financial Data (1) 2021E Sales $4.75 billion 2021E EBITDA $580 million 87% of EBITDA from specialty applications (1) As of October 28, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 CLARIANT COST SYNERGIES • On-track to realize $50 million of expected synergies in 2021 – up from earlier estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50M by 2025 The complementary aspects of our combined businesses are unquestionable. APPENDIX Performance Additives Pigments TiO2 Dyestuffs 4%Polyethylene Nylon Polypropylene Other Raw Materials 29% Styrenic Block Copolymer ~1/3 hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 36 • Significant raw material price inflation and tight inventory continued in Q3 2021 o Average cost of hydrocarbon based materials was up 65% year-over-year and 10% sequentially o Average cost of non-hydrocarbon based materials was up 20% year-over-year and 3% sequentially • Additionally, we continued to experience other supply chain challenges during Q3 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2020 pro forma purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 51% Latin America 2021 YTD SEGMENT, END MARKET AND GEOGRAPHY 38 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 39 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 40 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 41 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) 42 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 November Investor Meetings.pdf AVNT Q3 2021 Earnings Presentation.pdf Final 10.27 606pm Q3 21 IR Deck Version v1.pdf

Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 8.9 12.0 11.9 10.9 9.9 8.2 16.3 13.8 11.9 9.6 9.5 9.5 9.2 7.7 11 21 O ct 23 PM PP FM C C 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.

In reviewing competitive market data for 2022, we drew from two independent sources. The second independent source of data that we used to augment the peer proxy analysis was the Consultant’s analysis of competitive market data relating to other applicable general industries. The CEO makes his recommendations in conjunction with the marketplace data.

You can be certain that Avient meets or exceeds the material safety data reporting requirements of your country or region

THIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING THIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF POLYONE’S FORM 10-K FILINGTHIS PAGE IS NOT PART OF AVIENT’S FORM 10-K FILING Reconciliation of Non-GAAP Financial Measures (Unaudited) (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.