Our expanding portfolio of offerings includes colorants, advanced composites, functional additives, engineered materials, and Dyneema®, the world’s strongest fiber™.

Reconciliation to Adjusted EPS Excluding Special Items and Impacts of February 2020 Equity Offering Three Months Ended March 31, 2020 Net income from continuing operations – GAAP $ 33.1 Special items, after tax 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. Avient Corporation 33 Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Adjusted EPS attributable to Avient common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** 2019 Q2 2020 Net income from continuing operations attributable to Avient common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 75.5 $ 23.0 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 61.7 2.4 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (5.9) 0.2 Adjusted net income from continuing operations attributable to Avient common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 131.3 $ 25.6 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 77.7 91.8 Adjusted EPS attributable to Avient common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 1.69 $ 0.28 * 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).

Advanced Composites Explained Avient's commitment to continuous improvement and operational excellence Composition of the Board, director responsibilities, access to management and independent advisors, director compensation, and director orientation and continuing education

PHONE CASE BRAND C L E A R P H O N E C A S E S • Optically clear • Non-yellowing • Good stain resistance • Bondable to PC • Formulated a custom solution to enhance stain resistance and tensile strength • Collaborated on application and technical services to help ensure end product maintained optical clarity when texture was added • Provided manufacturing support to reduce scrap • Coordinated across multiple regions for supply continuity and technical support to serve customer’s global needs Versaflex™ CE 3320-80 TPE KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers

Thermoplastic composites include these base resins, but are combined with a structural filler such as glass, carbon or polymer fibers to enhance strength, rigidity and structure. Further performance can be delivered through an engineered thermoplastic sheet or thick film, which may incorporate more than one resin formulation or composite in multiple layers to impart additional properties such as gas barrier, structural integrity and lightweighting. Glasforms), a leading manufacturer of glass and carbon fiber reinforced polymers and advanced composite products, with 2012 annual sales of $51.1 million.

Homepage // News Center // Avient Extends Bio-Based Polyolefin Range, Utilizing the Benefits of Cellulose Fiber New Maxxam™ BIO Bio-Based Polyolefins can be filled with up to 40% bio-filler from cellulose fiber.  The portfolio now includes newly added grades with up to 40 percent filler from cellulose fiber.

SYRINGE MANUFACTURING D I S P O S A B L E S Y R I N G E T I P C A P • Excellent sealing and resealing performance • No DEHP or natural rubber latex added during processing • Can be sterilized by EtO • Compliance with ISO 10993-4&5, USP Class VI Dynaflex™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? Formulated a solution that met rigorous medical application requirements • Leveraged global footprint to ensure supply continuity • Increased process efficiency by replacing previous thermoset material with TPE LEARN MORE https://www.avient.com/products/thermoplastic-elastomers/dynaflex-thermoplastic-elastomers

Third quarter 2021 GAAP EPS from continuing operations was $0.57 compared to $0.02 in the prior year third quarter. We have achieved significant growth in sustainable solutions, healthcare and composites in 2021. I’m very proud of our performance and our associates who continue to take care of each other and our customers.”

SHANGHAI – June 1, 2022 – Avient today launched a new family of Versaflex™ thermoplastic elastomer (TPE) materials developed for fatty-food-contact (FFC) applications that must comply with migration limit standards in Europe and North America. Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility

CLEVELAND – March 28, 2022 – Avient today announced a new reSound™ REC thermoplastic elastomer (TPE) formulation for use in certain food-contact applications. Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility