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, 2022 2021 Sales: Color, Additives and Inks $ 649.5 $ 609.3 Specialty Engineered Materials 244.7 216.5 Distribution 432.9 362.7 Corporate and eliminations (33.3) (26.2) Sales $ 1,293.8 $ 1,162.3 Gross margin: Color, Additives and Inks $ 192.1 $ 197.5 Specialty Engineered Materials 69.8 64.7 Distribution 39.3 39.3 Corporate and eliminations (7.5) 0.9 Gross margin $ 293.7 $ 302.4 Selling and administrative expense: Color, Additives and Inks $ 97.6 $ 108.7 Specialty Engineered Materials 30.1 30.5 Distribution 15.1 15.3 Corporate and eliminations 22.3 27.5 Selling and administrative expense $ 165.1 $ 182.0 Operating income: Color, Additives and Inks $ 94.5 $ 88.8 Specialty Engineered Materials 39.7 34.2 Distribution 24.2 24.0 Corporate and eliminations (29.8) (26.6) Operating income $ 128.6 $ 120.4 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 120.5 $ 116.2 Specialty Engineered Materials 47.5 42.0 Distribution 24.4 24.2 Corporate and eliminations (26.0) (24.9) Other income, net (0.6) 1.5 EBITDA $ 165.8 $ 159.0 11 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.

Traditional painting processes for plastics are costly, and they require additional expense to eliminate resulting VOC emissions,” said Say Eng Lee, general manager of the Color Asia of PolyOne. Brilliant Metallic Colorants are the newest members of PolyOne’s portfolio of OnColor FX special effect colorants in Asia. Jennifer Huang Senior Manager, Marketing Communications Asia PolyOne Corporation +86 21 60284888 jennifer.huang@avient.com

Conversely, we continue to see destocking in healthcare and telecommunications as customers reduce inventory levels, and we expect weak demand in transportation and building & construction due to higher interest rates," said Jamie Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. 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. Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Gross margin: Color, Additives and Inks $ 148.3 $ 134.5 $ 631.2 $ 681.3 Specialty Engineered Materials 78.1 82.4 341.8 283.7 Corporate (17.5) (44.9) (80.5) (82.3) Gross margin $ 208.9 $ 172.0 $ 892.5 $ 882.7 Selling and administrative expense: Color, Additives and Inks $ 86.5 $ 90.2 $ 371.3 $ 380.3 Specialty Engineered Materials 48.7 47.2 199.3 143.6 Corporate 30.6 34.2 125.1 115.5 Selling and administrative expense $ 165.8 $ 171.6 $ 695.7 $ 639.4 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 13 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.

While we anticipate raw material and labor shortages to continue and inflation to be persistent, we have proven that we can manage these challenges and expect to deliver another record year of growth.” Full Year Comparisons Pro Forma for Acquisition of Clariant’s Color Business The company acquired Clariant’s color (“Clariant Color”) business on July 1, 2020 (the “Acquisition Date”). Management believes this provides better comparability of the performance of the combined businesses.

Inventories, net Decrease in inventories    Color, Additives and Inks

Inventories, net Decrease (increase) in inventories Color, Additives and Inks

Ranging from colorants and additives to engineered polymer formulations, these solutions can help customers operate more efficiently and design better. Managing heat in molded interconnect devices with specialty thermoplastics Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com

Color Services Color Management: ColorMatrix Select Avient Color Prediction Service

With SiteCool technology, owners of large facilities gain a new tool in the fight to make their sites more energy efficient,” said Barto Du Plessis, general manager, Colorant Chromatics. Cooling costs are a significant cost in managing these large facilities. SiteCool helps facility management meet both goals.

Color and additive solutions include an innovative array of colors, special effects and performance-enhancing and eco-friendly solutions. Senior Vice President and General Manager, Specialty Color, Additives and Inks, July 2006 to January 2010. Inventories Inventories are stated at the lower of cost or market using the first-in, first-out (FIFO) method.