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 uses adjusted operating income, adjusted EPS, and working capital to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance. Average Debt Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne Debt $ 705.8 $ 705.2 $ 706.9 $ 1,055.5 $ 1,031.2 $ 840.9 Average Equity Q2 2012 Q3 2012 Q4 2012 Q1 2013 Q2 2013 Average PolyOne shareholders’ equity $ 604.3 $ 629.3 $ 629.1 $ 871.8 $ 993.9 $ 745.7 Platform sales and operating income (OI) H1 2012*** H1 2013*** H1 2013**** Global Specialty Engineered Materials Sales $ 280.9 $ 352.0 $ 285.1 Global Color, Additives and Inks Sales 413.9 434.7 409.2 Designed Structures & Solutions Sales - 240.4 - Specialty Platform Sales $ 694.8 $ 1,027.1 $694.3 Performance Products and Solutions Sales 336.0 336.7 317.5 PolyOne Distribution Sales 533.6 543.1 543.1 Corporate and Eliminations (62.3) (68.2) (68.2) Total Sales $ 1,502.1 $ 1,838.7 $ 1,486.7 Global Specialty Engineered Materials OI $ 24.6 $ 32.5 $ 31.2 Global Color, Additives and Inks OI 44.0 54.7 52.0 Designed Structures & Solutions OI - 10.5 - Specialty Platform OI $ 68.6 $ 97.7 $ 83.2 Performance Products and Solutions OI 19.3 27.5 25.7 PolyOne Distribution OI 33.4 33.1 33.1 Corporate and eliminations (20.3) (25.7) (20.3) Special items in OI (20.3) (11.4) (20.3) Operating income - GAAP $ 80.7 $ 121.2 $ 101.4 Special items in OI 20.3 11.4 20.3 Operating income adjusted $ 101.0 $ 132.6 $ 121.7 Global Specialty Engineered Materials - OI % of sales 8.8% 9.2% 10.9% Global Color, Additives and Inks - OI % of sales 10.6% 12.6% 12.7% Designed Structures & Solutions - OI % of sales - 4.4% - Specialty platform - OI % of sales 9.9% 9.5% 12.0% PP&S operating - OI % of sales 5.7% 8.2% 8.1% Distribution OI - % of sales 6.3% 6.1% 6.1% PolyOne OI adjusted - % of sales 6.7% 7.2% 8.2% Reconciliation to Condensed Consolidated Balance Sheets H1 2013 Short-term debt and current portion of long-term debt $ 8.7 Long-term debt 1,022.5 Less cash and cash equivalents (392.4) Specialty Platform Gross Margin Percentage 2006Y* Q2 2013**** Global Specialty Engineered Materials Sales $ 345.3 $ 143.5 Global Color, Additives and Inks Sales 531.8 207.5 Specialty Platform Sales $ 877.1 $ 351.0 Global Specialty Engineered Materials Gross Margin $ 41.6 $ 37.3 Global Color, Additives and Inks Gross Margin 83.6 71.8 Specialty Platform Gross Margin $ 125.2 $ 109.1 Specialty Platform Gross Margin Percentage 14.3% 31.1% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.

Methods of Distribution We sell products primarily through direct sales personnel, distributors, and commissioned sales agents. Acquisitions increased sales by 4.0%, while foreign exchange negatively impacted sales 5.6%. Rebates are estimated based on sales terms, historical experience along with annual sales projections.

They are based on management’s expectations that involve 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. EBITDA 73 69 Q1 2024 Q1 2025 • Flat sales (excl. Management excludes intangible asset amortization from adjusted EPS as it believes excluding acquired intangible asset amortization is a useful measure of current period earnings per share.

MSC Certificate Place and date: For the issuing office: Høvik, 23 January 2025 DNV Product Assurance AS Veritasveien 1, 1363 Høvik, Norway Cecilie Gudesen Torp Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ICP-4-5-i5-ISO13485-f1 rev2 ACCREDITED UNIT: DNV Product Assurance AS, Veritasveien 1, 1363 Høvik, Norway - TEL: +47 67 57 99 00. www.dnv.com MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 240625-2017-AQ-RGC-NA-PS Initial certification date: 14 September 2017 Valid: 08 February 2025 – 07 February 2028 This is to certify that the management system of PolyOne-Shanghai, China 88 Guoshoujing Road, Z.J.Hi-Tech Park, Pudong Shanghai, China (Unicode: 91310000607342402D) has been found to conform to the Quality Management System standard: ISO 13485:2016 This certificate is valid for the following scope: Design, Manufacture, Sales and Distribution of Medical Colour and Additive Concentrates Used for the Plastic Parts of Medical Devices http://www.dnv.com

Microsoft Word - NEU Sales Terms and Condition.9-16-21v2 TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by NEU Specialty Engineered Materials, LLC and its affiliates (“Seller”). 1. Re-Sale and Re-Export. The United Nations Convention respecting Contracts for the International Sale of Goods shall not apply to sales under these Terms. 20.

Our management team led the way, and our global associates delivered. Vice President, Key Account Management, April 2007 to December 2011. Global Product Manager, Lexan — GE Plastics June 2002 to April 2004.

Marketing Manager Nalco Europe December 1999 to May 2003. Regional Sales Manager Nalco Chemical Company March 1997 to November 1999. Cost of sales As a percent of sales, cost of sales decreased from 81.5% in 2014 to 79.8% in 2015.

Management believes this provides comparability of the performance of the combined businesses. Senior management also uses 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. EBITDA and Adjusted EBITDA are non-GAAP financial measures that management uses in evaluating operating performance.

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 December 31, Year Ended December 31, Reconciliation to Consolidated Statements of Income 2023 2022 2023 2022 Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Gross margin - GAAP 208.9 172.0 892.5 882.7 Special items in gross margin (Attachment 3) 17.6 45.5 80.0 81.1 Adjusted gross margin $ 226.5 $ 217.5 $ 972.5 $ 963.8 Adjusted gross margin as a percent of sales 31.5 % 27.5 % 30.9 % 28.4 % Operating income - GAAP 43.1 0.4 196.8 243.3 Special items in operating income (Attachment 3) 26.1 59.9 116.0 108.7 Adjusted operating income $ 69.2 $ 60.3 $ 312.8 $ 352.0 Adjusted operating income as a percent of sales 9.6 % 7.6 % 10.0 % 10.4 % The following pro forma adjustments are referenced by management to provide comparable business performance by incorporating the APM business in periods prior to the acquisition date (September 1, 2022).

Adjusted EPS of $0.52 exceeded the $0.48 projection included in the Company’s performance update provided in December and was driven by better-than-expected sales in the Color, Additives and Inks segment. Management believes this provides 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.