Artisan ABS formulations are currently manufactured in Asia in customizable, metallic colors, and are available for purchase globally. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com Jennifer Huang Senior Manager, Marketing Communications Asia Avient Corporation +86 21 6028-4888 jennifer.huang@avient.com

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Senior management believes these measures 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. Three Months Ended March 31, 2024 2023 Sales: Color, Additives and Inks $ 515.3 $ 537.0 Specialty Engineered Materials 314.4 309.7 Corporate (0.7) (1.0) Sales $ 829.0 $ 845.7 Gross margin: Color, Additives and Inks $ 171.2 $ 162.0 Specialty Engineered Materials 107.0 93.9 Corporate — (8.3) Gross margin $ 278.2 $ 247.6 Selling and administrative expense: Color, Additives and Inks $ 96.4 $ 96.4 Specialty Engineered Materials 53.6 50.8 Corporate 34.2 43.3 Selling and administrative expense $ 184.2 $ 190.5 Operating income: Color, Additives and Inks $ 74.8 $ 65.6 Specialty Engineered Materials 53.4 43.1 Corporate (34.2) (51.6) Operating income $ 94.0 $ 57.1 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 25.8 Specialty Engineered Materials 19.6 21.2 Corporate 2.8 3.5 Depreciation & amortization $ 44.3 $ 50.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 96.7 $ 91.4 Specialty Engineered Materials 73.0 64.3 Corporate (31.4) (48.1) Other (expense) income, net (0.9) 0.7 EBITDA from continuing operations 137.4 108.3 Special items, before tax 6.2 27.3 Depreciation and amortization included in special items (0.5) (1.8) Adjusted EBITDA $ 143.1 $ 133.8 12 Attachment 7 Avient Corporation Reconciliation of Non-GAAP Financial Measures (Unaudited) (In millions, except per share data) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

Management believes this provides better comparability of the performance of the combined businesses. They are based on management's expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Sales: Color, Additives and Inks $ 609.3 $ 256.5 Specialty Engineered Materials 216.5 185.3 Distribution 362.7 289.5 Corporate and eliminations (26.2) (19.8) Sales $ 1,162.3 $ 711.5 Gross margin: Color, Additives and Inks $ 197.5 $ 89.4 Specialty Engineered Materials 64.7 52.6 Distribution 39.3 33.6 Corporate and eliminations 0.9 (4.1) Gross margin $ 302.4 $ 171.5 Selling and administrative expense: Color, Additives and Inks $ 108.7 $ 48.9 Specialty Engineered Materials 30.5 30.3 Distribution 15.3 14.2 Corporate and eliminations 27.5 25.3 Selling and administrative expense $ 182.0 $ 118.7 Color, Additives and Inks $ 88.8 $ 40.5 Specialty Engineered Materials 34.2 22.3 Distribution 24.0 19.4 Corporate and eliminations (26.6) (29.4) Operating income $ 120.4 $ 52.8 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 116.2 $ 51.4 Specialty Engineered Materials 42.0 29.8 Distribution 24.2 19.5 Corporate and eliminations (24.9) (28.0) Other income, net 1.5 1.6 EBITDA $ 159.0 $ 74.3 12 Attachment 7 Reconciliation of Non-GAAP Financial Measures (Unaudited) Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.

With our complete range of wire and cable solutions for applications in telecommunications, electronics, and transportation, Avient can help consistently meet product specification challenges and add value through ease of processing, product performance, and cost-saving,” said Say-Eng Lee, vice president and general manager, Color & Additives Asia at Avient.   Colorant Chromatics™ UV Laser Marking Technology for FEP allows a permanent and gentle marking of wire and cable surfaces. Media contact Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 6028 4888  jennifer.huang@avient.com

PolyOne is exhibiting a full range of polymer, colorant and additive healthcare solutions this week at Medical Design & Manufacturing West in booth 3213. Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6406-832-061 matt.defosse@avient.com

Differentiating with Color: InVisiOSM Color Inspiration 2015, a collection of six insightful color directions for designers, brands and marketing managers, adds dimension to trend indicators by capturing visual effects and textural influences as well. In addition, this specialty solution improves color stability and maintains polymer clarity. Trade Media Contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com

The tub features a custom overmolded GLS Versaflex™ thermoplastic elastomer (TPE) and non-toxic PolyOne OnColor™ colorants. Yeung Yiu Fai, Karibu general manager. Sandy Wagner Marketing Communications Manager PolyOne Corporation +1 815-385-8500 sandy.wagner@avient.com

Polymer Colorants Power Management Making the Most of Color: Smart Colorants™

Liquid Color System ColorMatrix™ Liquid Color Concentrates include colors and special effects that provide clean and accurate metering to enable rapid and sustainable color development 2020 Color Inspiration Guide A collection of four progressive and dynamic color palettes that represent a myriad of viewpoints from visionaries around the world Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

Homepage // News Center // OnColor™ WC Wire and Cable Colorants Feature Cost-Effective Performance OnColor WC Choice colorants are commercially available in North and South America, with additional global availability pending.   Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com