Continued R&D investment in current initiatives is expected · Steep increases in advanced economies' carbon prices · Considerable increases in emerging economies' carbon prices · Some change in carbon prices · Declining fuel prices · Regional variability in fuel prices, though slight net increase · Rising fuel prices 1 International Energy Agency World Energy Outlook 2021 The following summarizes Avient's climate-related risks and opportunities analyzed across multiple scenarios, in alignment with the Task Force on Climate-Related Financial Disclosures (TCFD) framework.

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA and Adjusted Earnings Per Share, to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort.

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA and Adjusted Earnings Per Share, to the most comparable GAAP financial measures on a forward- looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items, and the information is not available without unreasonable effort.

Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA and Adjusted Earnings Per Share, to the most comparable GAAP financial measures on a forward- looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items, and the information is not available without unreasonable effort.

PRODUCT BULLETIN 1.00E+00 1.00E+02 1.00E+04 1.00E+06 1.00E+08 1.00E+10 1.00E+12 1.00E+14 1.00E+16 1.00E+18 0 10 20 30 40 50 60 70 R e si si ti v it y /O h m Silcosperseä EC dosing percentage (%) CB HCR SWCNT HCR SWCNT LSR MWCNT HCR aceSurface Resistivity Silcosperse™ EC Electrically Conductive Additive Dispersions Silcosperse™ EC Electrically Conductive additive dispersions provide varying levels of electrical conductivity to silicone material.

Adjusted EPS of $0.41 in line with company's outlook statements, and flat to prior year Commenting on the company's outlook, Mr.

2025 Outlook will provide additional details on its 2024 fourth quarter and full year results, as well as its 2025 full year outlook during its webcast scheduled for

Outlook Commenting on the Company’s 2014 outlook, Mr.

2024 Outlook will provide additional details on its 2024 third quarter results and 2024 full-year outlook during its webcast scheduled for

2023 Outlook will provide additional details on its 2022 fourth quarter and full year performance and 2023 outlook during its webcast scheduled for