Contact us today https://avient.me/3FxhNrw Button 92: Button 93: Button 3: Button 83: Button 5: Button 6: Button 66: Button 67: Button 68: Button 69: Button 70: Button 71: Button 72: Button 73: Button 74: Button 75: Button 77: Button 76: Button 78: Button 79: Button 84: Button 85: Button 86: Button 87: Button 88: Button 89: Button 90:

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Reduce Scope 1 & 2 greenhouse gas emissions by 35%. Operating Income $3,783 $4,100 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,300 $308 $360 $308 $410 $1.93 $2.40 $1.93 $2.80 (1) (1)(1) (1)(1) (1) $442 $457 $560 $1.74 $1.93 $2.80 FULL YEAR 2019 – 2021 ORGANIC GROWTH 23 Sales Adjusted EBITDA $3,981 $3,783 $4,300 + 8% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 27% + 61% 24 BALANCE SHEET • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x Net Debt / Adjusted EBITDA ($ in millions) 2021E Adjusted EBITDA 560$ Free Cash Flow 275$ Total Debt 1,860 Less: Cash (800) Net Debt 1,060$ 2021E Net Debt / Adjusted EBITDA 1.9x (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition PEER COMPARISONS 25 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

PolyOne Corporation Page 4 Agenda 1:00 Introduction Robert M. Patterson 1:30 Global Color, Additives and Inks John V. 1) Special items are a non-GAAP financial measure.

Information Systems Use Policy Effective date: September 1, 2021 Available on the Avient Ethics & Corporate Policies Page on the Loop Confidential 2 Avient IT Department Information Systems Use Policy September 1, 2021 Table of Contents Purpose .......................................................................................................................................................... 3 Scope.............................................................................................................................................................. 3 Usage ............................................................................................................................................................. 3 Expectations for Use of Information Systems ........................................................................................... 3 Prohibited Uses of Information Systems ................................................................................................... 3 Personal Use .............................................................................................................................................. 4 Social Media .............................................................................................................................................. 4 Enforcement and Monitoring ......................................................................................................................... 4 Questions and Additional Information .......................................................................................................... 5 Document Change and Review History ........................................................................................................ 5 Appendix A: Definitions................................................................................................................................ 6 Confidential 3 Avient IT Department Information Systems Use Policy September 1, 2021 PURPOSE This Information Systems Use Policy (“Policy”) establishes acceptable and prohibited uses of Avient’s Information Systems to protect Avient and its employees and affiliates from both intentionally and unintentionally harmful actions by Users. Confidential 4 Avient IT Department Information Systems Use Policy September 1, 2021 Additionally, the following Information Systems uses are prohibited unless specifically authorized by Avient or authorized Avient IT representatives: • Revealing account usernames, passwords, or other Personal Data to others or allowing use of Information Systems by others, including family and other household members; • Conducting any form of network monitoring that could intercept data not intended for the recipient User; • Circumventing User authentication or security of any Information Systems; or • Using personal devices to access Confidential Data or connect to Information Systems. Confidential 5 Avient IT Department Information Systems Use Policy September 1, 2021 QUESTIONS AND ADDITIONAL INFORMATION For additional details regarding cybersecurity and incidence response, please refer to Avient’s Cyber and Data Incident Response Policy.

Microsoft PowerPoint - PolyOne Investor Presentation 5.4.20_v8 P E O P LE P RO D U CT S P LA N E T P E RF O R MAN C E JVs Performance Products & Solutions Distribution Specialty To be the world’s premier provider of specialized polymer materials, services and solutions To be the world’s premier provider of specialized polymer materials, services and sustainable solutions 2016 2017 2018 2019 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Bio-derived Content Reduced Energy Use VOC Reduction $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth PolyOne Corporation 33 Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** Q1 2019*** 2019 Q1 2020 Net income from continuing operations attributable to PolyOne common shareholders Joint venture equity earnings, after tax Special items, before tax(1) Special items, tax adjustments(1) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 22.4 $ 75.5 $ 33.1 (19.0) (14.7) (3.7) — — — — — — — — — — — (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 12.2 61.7 9.6 (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (1.2) (5.9) (1.0) $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 33.4 $ 131.3 $ 41.7 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 78.2 77.7 86.7 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 0.43 $ 1.69 $ 0.48 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. ** Pro forma for sale of Designed Structures and Solutions segment (DSS). *** Pro forma for sale of Performance Products and Solutions segment (PP&S). Reconciliation to Adjusted EPS Excluding Special Items and Impacts of February 2020 Equity Offering Three MonthsEnded March 31, 2020 Net income from continuing operations – GAAP $ 33.1 Special items, after tax(1) 8.6 After tax interest income earned on equity proceeds, included in Interest expense, net (0.7) Adjusted net income excluding special items and impact of interest income on equity proceeds $ 41.0 Diluted weighted-average shares used to compute earnings per common share 86.7 Weighted-average impact of 15.3 million shares issued in February 2020 equity offering (9.3) Diluted weighted-average shares excluding impact of shares issued in February 2020 equity offering 77.4 Adjusted EPS - excluding special items and the net impact of equity offering $ 0.53 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

Excelite OnePager Putty Knife PUTTY KNIFE MANUFACTURER N O R T H A M E R I C A • Reduce current scrap rate of 30% • Eliminate prominent sink marks • Minimize random short shots • Reduced scrap rate to 1% • Eliminated sink marks • Improved mold fill • Improvement in cell structure increased cell density and dimensional stability during critical cooling time Excelite™ IM Chemical Foaming Additives KEY REQUIREMENTS* WHY AVIENT?