OnColor™ Colorants Shades of Nature Collection OnColor™ Colorants – Shades of Nature is a collection of 10 special effects colorants inspired by nature. Formulated using a proprietary process, Shades of Nature special effects colorants deliver a less industrial effect, appearing more sustainable and handcrafted to enable products to make a sensory connection with consumers. Luxurious and refined, Shades of Nature’s visual impression replicates stone, pebbles or granite effects as well as floral hues.

To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. Investor Day 2021 Shaping a Sustainable Future Bob Patterson Avient Corporation 4 End Market Transformation 5 Healthcare 4% Packaging 8% Consumer 10% Building & Construction 43% Transportation 14% Industrial 15% Energy 4% Telecom. 2% 2006 2021E Healthcare 14% Consumer 23% Building & Construction 10% Transportation 12% Industrial 16% Energy 2% Telecom. 4% Packaging 19% Avient Corporation Avient: Who We Are 39 22 9 34 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 8,600+ employees 100+ manufacturing plants Key Financial Data 2021E Sales $4.75 billion 2021E EBITDA $580 million 2021E EPS $3.00 87% of EBITDA from specialty applications >70% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales Avient Corporation 6 46% 66% 87% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2021E % o f A d ju st ed E B IT D A (1 ) JVs Performance Products & Solutions Distribution Specialty 7% (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) 2021 includes full synergies from Clariant color acquisition (2) Specialty Transformation Avient Corporation 7 CAI (1) Financial information is pro forma to include a full year of Clariant Color business acquisition 2.7% 15.2% 17.0% 2006 2019 2021E 1.8% 15.2% 17.6% 2006 2019 2021E (1) SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements Specialty EBITDA Margin Expansion Avient Corporation 8 (1) (1) We are a Formulator CUSTOM FORMULATION Avient Corporation 9 Sustainability for a Better Tomorrow *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business Revenue From Sustainable Solutions* 2016-2021 2016 2017 2018 2019 2020PF** 2021E $405M $455M $340M $550M $790M $930M $270 215 170 90 90 30 45 20 $930M2021E Sales ($ in millions) Avient Corporation 10 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 $2.43 $1.51 $1.69 $1.93 $3.00 2009 2010 2011 2012 2013 2014 2015 2016* 2017* 2018 20182 2019 2020 2021E Pro Forma for sale of PP&S (1): Pro Forma for sale of DSS (2): Pro Forma for full year of the Clariant Color acquisition 2018(1) (1) (2) Adjusted EPS Growth Avient Corporation 11 $133 $205 2019PF 2021E Clariant Color: Transformational Acquisition 12 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.0x 2019PF 2021E 2021E w/ Full Synergies • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • On-track to realize $52 million of expected synergies in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion. Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Reconciliation of EBITDA by Segment Year Ended December 31, 2019 Sales: Color, Additives and Inks $ 1,003.8 Specialty Engineered Materials 745.7 Distribution 1,192.2 Corporate and eliminations (79.0) Sales $ 2,862.7 Operating income: Color, Additives and Inks $ 147.4 Specialty Engineered Materials 83.7 Distribution 75.4 Corporate and eliminations (149.7) Operating income $ 156.8 Items below OI in Corporate: Other income, net $ 12.1 Depreciation & amortization: Color, Additives and Inks $ 42.7 Specialty Engineered Materials 29.5 Distribution 0.5 Corporate and eliminations 5.4 Depreciation & Amortization $ 78.1 EBITDA: Color, Additives and Inks $ 190.1 Specialty Engineered Materials 113.2 Distribution 75.9 Corporate and eliminations (132.2) EBITDA $ 247.0 EBITDA as a % of Sales: Color, Additives and Inks 18.9 % Specialty Engineered Materials 15.2 % Distribution 6.4 % 1 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Year Ended December 31, 2019 Sales: Color, Additives and Inks $ 1,003.8 Clariant Color pro forma adjustments(1) 1,118.6 Pro forma sales $ 2,122.4 Operating income: Color, Additives and Inks $ 147.4 Clariant Color pro forma adjustments(1) 72.9 Pro forma operating income $ 220.3 Depreciation & amortization: Color, Additives and Inks $ 42.7 Clariant Color pro forma adjustments(1) 60.3 Pro forma depreciation & amortization $ 103.0 EBITDA Color, Additives and Inks $ 190.1 Clariant Color pro forma adjustments(1) 133.2 Pro forma EBITDA $ 323.3 Pro forma EBITDA as a % of Sales 15.2 % (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 2009* 2010* 2011* 2012* 2013 2014 2015 2016** 2017 2018 2018*** 2019*** 2020 Net income from continuing operations attributable to Avient common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 75.5 $ 152.7 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 61.7 66.2 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (5.9) (41.4) Adjusted net income from continuing operations attributable to Avient common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 131.3 $ 177.5 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 77.7 92.1 Adjusted EPS attributable to Avient common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 1.69 $ 1.93 * Historical results have been updated to reflect subsequent changes to accounting principle and discontinued operations, excluding any changes as a result of discontinued operations from the sale of the Designed Structures and Solutions segment (DSS) and the Performance Products and Solutions segment (PP&S). ** Pro Forma for sale of DSS. *** Pro Forma for sale of PP&S. *** Pro Forma for full year of the Clariant Color acquisition 2 Nine Months Ended September 30, Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2020 2021 2020 2019 Net income from continuing operations – GAAP $ 59.1 $ 201.7 $ 133.8 $ 75.7 Income tax expense 22.5 51.8 5.2 33.7 Interest expense 55.3 57.8 74.6 59.5 Depreciation and amortization from continuing operations 77.3 107.7 115.1 78.1 EBITDA $ 214.2 $ 419.0 $ 328.7 $ 247.0 Special items, before tax 62.0 36.5 66.2 61.7 Interest expense included in special items (10.1) — (10.1) — Depreciation and amortization included in special items (2.5) (0.1) (3.2) — Adjusted EBITDA $ 263.6 $ 455.4 $ 381.6 $ 308.7 Clariant MB pro forma adjustments(1) 75.1 — 75.1 133.2 Pro forma adjusted EBITDA $ 338.7 $ 455.4 $ 456.7 $ 441.9 (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 Year Ended December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient 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 (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 3 Year Ended December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient 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 (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition Return on Invested Capital Year Ended December 31, 2006 Short term debt $ 5.2 Current portion of long term debt 22.5 Long term debt 567.7 Shareholder's equity 574.5 Invested capital $ 1,169.9 Cash 66.2 Current invested capital (net) $ 1,103.7 Adjusted operating income 87.5 Current tax rate 0.33 Return on invested capital 5.3 % Year Ended December 31, Reconciliation to Enterprise Value / Adjusted EBITDA 2011 2016 Net income from continuing operations – GAAP $ 172.6 $ 165.0 Income tax expense 26.1 57.3 Interest expense 33.7 59.8 Depreciation and amortization from continuing operations 57.5 105.9 EBITDA $ 289.9 $ 388.0 Special items, before tax (46.7) 35.3 SunBelt equity income (5.7) — Depreciation and amortization included in special items — (5.4) Adjusted EBITDA $ 237.5 $ 417.9 Enterprise value(2) $ 1,542.0 $ 3,763.0 Enterprise value / adjusted EBITDA 6.5 9.0 (2) - Enterprise value is defined as market capitalization plus net debt 4 AVNT 2021 Investor Day adfa.pdf AVNT 2021 Investor Day.pdf AVNT 2021 Investor Day.pdf AVNT 2021 Investor Day - Final.pdf 2021 Investor Day Recs v3 12.2 (002).pdf

To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. Examples include: • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient employs approximately 8,700 associates and is certified ACC Responsible Care® and a founding member of the Alliance to End Plastic Waste. We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT COLOR Key Financial Data 2021 Sales $4.8 billion 2021 EBITDA $581 million 87% of EBITDA from specialty applications 2021 PE RF O RM AN CE $80 $85 2020 2021 $0.52 $0.58 2020 2021 Q4 2021 PERFORMANCE (TOTAL COMPANY) 8 Sales Adjusted Operating Income $997 $1,202 2020 2021 + 21% Adjusted EPS + 6% + 12% (in millions) (in millions) $308 $429 2020PF 2021 $1.93 $3.05 2020PF 2021 FULL YEAR 2021 PERFORMANCE (TOTAL COMPANY) 9 Sales Adjusted Operating Income $3,783 $4,819 2020PF 2021 + 27% Adjusted EPS + 39% + 58% (in millions) (in millions) (1) Financial information is pro forma to include a full year of Clariant Color business (1) (1) (1) FULL YEAR 2021 SEGMENT PERFORMANCE 10 CAI $2,043 $2,402 Sales ($ in millions) SEM Distribution $226 $303 Operating Income + 18% + 34% $1,110 $1,631 Sales $70 $93 Operating Income + 47% + 33% (1) $709 $919 Sales $94 $132 Operating Income + 30% + 40% (1) Financial information is pro forma to include a full year of Clariant Color business (1) Full Year 2020 (Pro forma) $3,783 $308 Sustainable Solutions 147 19% 60 Healthcare 143 28% 30 Composites 58 43% 29 Growth in Asia / LATAM 107 21% 26 Other 543 30% 58 Sub-total $4,781 26% $511 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (22) (12) Synergies 44 FX, Incentives, Other Employee Costs 60 (60) Full Year 2021 $4,819 27% $429 FULL YEAR 2021 SALES AND OPERATING INCOME (TOTAL COMPANY) 11 Sales Growth Rate Adjusted Operating Income$ millions (1) Financial information is pro forma to include a full year of Clariant Color business (1) Adjusted EBITDA 12 Full Year 2020 (Pro forma) $ 457 Demand 135 $ millions CAI: Price / Mix 158 Inflation (120) SEM: Price / Mix 84 Inflation (65) Distribution: Price / Mix 318 Inflation (304) Net Price Benefit 71 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (12) Synergies 44 Incentives, FX, Other Employee Costs (60) Full Year 2021 $ 581    (1) Financial information is pro forma to include a full year of Clariant Color business (1) • Demand impact driven by growth in key focus areas: sustainable solutions, healthcare, composites and growth in Asia / LATAM • Price increases more than offset raw material and supply chain impacts FULL YEAR 2021 EBITDA BRIDGE SPECIALTY EBITDA MARGIN EXPANSION 13 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Color business 15.3% 15.2% 16.2% 17.0% 2018 2019 2020 2021 14.8% 15.2% 17.6% 17.8% 2018 2019 2020 2021 (1) SEM • Record margins in 2021 despite unprecedented supply chain challenges • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Color synergy realization • Investments in composites and outdoor high performance applications drove growth and mix improvements • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $54 million of synergies realized in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion.

Pro Forma Financial Information Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). We also reference “pro forma” financial metrics, which include the results of the proposed Dyneema Business acquisition and the potential sale of the Distribution business. Senior management believes the measures described above are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. To provide comparable financial results, Avient references “pro forma” financial metrics, which include the business results of Clariant Color for the entirety of 2020.

SEARS PRO RED 2 ABS SEARS PRO RED 2 ABS

STAN-TONE HCC-35932 PRO VALLIS RED STAN-TONE HCC-35934 PRO OAK

PRO RED CSPN 19853GNS PRO MATCH BLACK

X15502410403 NATURAL QUANTUM PRO GREEN

16002-03 EXPL4732 NATURAL 0000 10853CLR PRO MATCH CLEAR