Custom colorants and special effects to provide shelf appeal and product differentiation Mevopur™ Special Effects for Healthcare Devices and Pharmaceutical Packaging Learn about the key characteristics and regulatory support Mevopur™ Special Effect Colorants offer for healthcare devices and pharmaceutical packaging

Drawing from its comprehensive portfolio of specialized global polymers, additives, and colorants for healthcare, Avient’s on-site experts will focus on a growing list of compliant technologies, bio-based and other sustainable alternatives to traditional materials, and its design services that support product development. Avient Design is a highly specialized group of industrial designers and project engineers who use a unique combination of design, polymer science, and manufacturing expertise to simplify the product design process and help get you to market faster. Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

Masterbatch colorants and special effects to provide shelf appeal and product protection in rigid containers and closures Mevopur™ Special Effects for Healthcare Devices and Pharmaceutical Packaging Learn about the key characteristics and regulatory support Mevopur™ Special Effect Colorants offer for healthcare devices and pharmaceutical packaging

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Senior management uses operating income excluding special items, adjusted EPS and working capital to asses.s 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. 1) Special items are a non-GAAP financial measure and are used to determine adjusted earnings.

All Rights Reserved 2025 18 Reconciliation of Non-GAAP financial measures Senior management uses comparisons of adjusted net income attributable to Avient common shareholders and diluted adjusted earnings per share (EPS) attributable to Avient common shareholders, excluding special items, to assess performance and facilitate comparability of results. Reconciliation to condensed consolidated statements of income Three months ended March 31, 2025 2024 $ Millions EPS (in $) $ Millions EPS (in $) Net (loss) income attributable to Avient common shareholders (20.2) (0.22) 49.4 0.54 Special items, after-tax 75.7 0.82 5.5 0.06 Amortization expense, after-tax 14.5 0.16 14.9 0.16 Adjusted net income / EPS 70.0 0.76 69.8 0.76 Per share amounts may not recalculate from figures present herein due to rounding 11 1 Reconciliation to EBITDA and Adjusted EBITDA Three months ended March 31, 2025 2024 $ Millions $ Millions Net (loss) income – GAAP (19.9) 49.7 Income tax (benefit) expense (6.7) 16.8 Interest expense, net 26.9 26.6 Depreciation & amortization 45.3 44.3 EBITDA 45.6 137.4 Special items, before tax 101.2 6.2 Interest expense included in special items (1.7) - Depreciation & amortization included in special items (0.4) (0.5) Adjusted EBITDA 144.7 143.1 Adjusted EBITDA as a percent of sales 17.5% 17.3% PAGE 1 OF 3 Copyright © . All Rights Reserved 2025 20 Reconciliation of Non-GAAP financial measures Reconciliation to condensed consolidated statements of income Three months ended March 31, 2023 $ Millions EPS (in $) Net income from continuing operations attributable to Avient common shareholders 20.8 0.23 Special items, after-tax 22.3 0.24 Amortization expense, after-tax 15.1 0.16 Adjusted net income / EPS 58.2 0.63 1 Reconciliation to EBITDA and Adjusted EBITDA Year ended December 31, 2024 $ Millions Net income – GAAP 170.7 Income tax expense 54.1 Interest expense 105.6 Depreciation & amortization 179.7 EBITDA 510.1 Special items, before tax 20.1 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.5) Adjusted EBITDA 526.4 Adjusted EBITDA as a percent of sales 16.2% PAGE 3 OF 3 Reconciliation to condensed consolidated statements of income Three months ended June 30, 2024 $ Millions EPS (in $) Net income attributable to Avient common shareholders 33.6 0.36 Special items, after-tax 21.8 0.24 Amortization expense, after-tax 14.8 0.16 Adjusted net income / EPS 70.2 0.76 Reconciliation to condensed consolidated statements of income Year ended December 31, 2024 $ Millions EPS (in $) Net (loss) income attributable to Avient common shareholders 169.5 1.84 Special items, after-tax 15.9 0.17 Amortization expense, after-tax 59.5 0.65 Adjusted net income / EPS 244.9 2.66 Per share amounts may not recalculate from figures present herein due to rounding 1 1 1 Q1 2025 Earnings webcast Slide 1 Slide 2: Disclaimer Slide 3: Q1 2025 highlights Slide 4: Q1 2025 organic revenue growth - by region Slide 5: Playbook in current environment Slide 6 Slide 7: Color, Additives & Inks – Q1 2025 performance Slide 8: Specialty Engineered Materials – Q1 2025 performance Slide 9: Global reach with a local touch Slide 10 Slide 11: 2025 financial guidance unchanged...

GEORGE INGLIS Vice President, Corporate Controller George Inglis is Vice President, Corporate Controller of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Inglis has taken on numerous special assignments in his tenure, including supporting Avient’s speciality transformation through M&A activity as well as establishing Avient’s Global Business Services (GBS).

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Senior management uses operating income excluding special items, 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. 1) Special items are a non-GAAP financial measure and are used to determine adjusted earnings.

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Senior management uses operating income excluding special items, 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. 1) Special items are a non-GAAP financial measure and are used to determine adjusted earnings.

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Senior management uses operating income excluding special items, 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. 1) Special items are a non-GAAP financial measure and are used to determine adjusted earnings.

High performance without secondary operations – When using Stat-Tech material, painting and vacuum metallization are not necessary in order to achieve the performance you need from your ADAS systems, therefore cutting down on the processing times and costs associated with using aluminum.