This is the case for Avient as well, but what further differentiates us, is that in 2020 our EPS also grew 11% vs. 2019. Three Months Ended March 31, Reconciliation to Consolidated Statements of Income 2021 2020 Sales $ 1,162.3 $ 711.5 Gross margin - GAAP 302.4 171.5 Special items in gross margin (Attachment 3) (2.2) 0.2 Adjusted Gross margin $ 300.2 $ 171.7 Adjusted Gross margin as a percent of sales 25.8 % 24.1 % Operating income - GAAP 120.4 52.8 Special items in operating income (Attachment 3) 2.4 9.7 Adjusted Operating income $ 122.8 $ 62.5 Adjusted Operating income as a percent of sales 10.6 % 8.8 % The table below reconciles pre-special income tax expense and the pre-special effective tax rate to their most comparable US GAAP figures. Three Months Ended March 31, 2021 2020 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results Income from continuing operations before income taxes $ 102.6 $ 2.4 $ 105.0 $ 45.0 $ 9.6 $ 54.6 Income tax expense - GAAP (22.9) — (22.9) (11.9) — (11.9) Income tax impact of special items (Attachment 3) — (0.9) (0.9) — (2.0) (2.0) Tax adjustments (Attachment 3) — 1.1 1.1 — 1.0 1.0 Income tax (expense) benefit $ (22.9) $ 0.2 $ (22.7) $ (11.9) $ (1.0) $ (12.9) Effective Tax Rate(1) 22.3 % 21.6 % 26.5 % 23.7 % (1) Rates may not recalculate from figures presented herein due to rounding 13 The following pro forma adjustments are referenced by management to provide comparable business performance by incorporating the Clariant Masterbatch business in periods prior to the acquisition date (July 1, 2020).

UL Rating Fire-rated for 1 hour per ASTM E119-09c Explore What's Possible

Yet at PolyOne, we’re always asking ourselves, “what’s next?” And despite our remarkable transformation and what our scorecard currently shows, there is much more to come. We’re defining our own future—one in which we expect to take PolyOne from gold to platinum.

Copyright 2011-2024 ABS Quality Evaluations, Inc. ISO 14001:2015 The Environmental Management System is applicable to: Certificate No: 65537 Certification Date: 29 September 2023 Effective Date: 22 March 2024 Expiration Date: 27 September 2026 Revision Date: 22 March 2024 Dominic Townsend, President CORPORATE SUPPORT ACTIVITIES, DESIGN, MANUFACTURE AND DISTRIBUTION OF COLOUR AND ADDITIVE CONCENTRATES, THERMOPLASTIC RESINS AND PELLETS, SPECIALTY COMPOUNDS AND COLORANTS. Copyright 2011-2024 ABS Quality Evaluations, Inc.

Census Bureau, HUD, October 18, 2024 Sep-23 Sep-24 Permits Starts Completions Factors affecting these data points include labor shortages, rising demand for housing, mortgage interest rates, and a heightened emphasis on sustainability. What’s the Difference? What’s Next?

March 29, 2022 For the Board of Directors Lisa K. We began making our proxy materials available to stockholders on March 29, 2022. The payment date will be a date in 2024 determined by the Compensation Committee (or its authorized delegate), which will occur no later than March 15, 2024.

March 30, 2021 March 12, 2021 March 11, 2021

March 30, 2015 March 26, 2015 March 18, 2015

MSC Certificate Place and date: For the issuing office: Shanghai, 20 March 2024 DNV - Business Assurance Building 9, No. 1591 Hongqiao Road, Changning DistrictShanghai China 200336 Zhu Hai Ming Management Representative Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance MANAGEMENT SYSTEM CERTIFICATE Certificate no.: 7071-1998-AQ-RGC-RvA Initial certification date: 28 April 1998 Valid: 30 March 2024 – 29 March 2027 This is to certify that the management system of PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance Certificate no.: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 20 March 2024 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid.

Q4 2023 Q4 2024 results Q4 2024 VS. EBITDA 84 82 Q4 2023 Q4 2024 EXCL. EBITDA 502 526 FY 2023 FY 2024 Adj.