AUTOMOTIVE OEM S U V R E M O V A B L E R O O F P A N E L L O C K I N G B R A C K E T • Lower weight by replacing cast steel • High stiffness & strength requirements to mimic metal performance • Critical dimensional tolerances to safely secure removable roof panels • Lowered weight by over four pounds per vehicle to achieve 80% reduction with carbon fiber reinforced composite • Provided injection molded material solution to simplify fabrication and eliminate need for powder-coating finish Complēt™ Long Carbon Fiber PPA Composite KEY REQUIREMENTS WHY AVIENT?

Material Storage  Material Handling  Screw and Barrel Material 

Avient's capstock solutions pair with traditional wood plastic composite (WPC) materials as a substrate for a durable outer layer, resulting in an ultra-low maintenance end product. Available for a variety of applications and uses, including: injection molded accessories, wood plastic composite solutions, outdoor furniture, and co-extruded capstocks. Marine Application Material Solutions

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. GUIDANCE DEBT / LEVERAGE REDUCTION • Completed sale of Distribution and paid down $750M of debt in November • Strong free cash flow in fourth quarter reduced leverage and enabled paydown of additional $200M of debt • Fixed/Floating Debt Ratio 63/37 • Proven track record of deleveraging following acquisitions through consistent free cash flow generation $725 $725 $725 $575 $500 $400 $600 $525 $425 $650 $650 $650 $600 $2.40B $2.20B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes After Distribution Divestiture Year-End 4 Year-End Leverage 3.8x 3.1x 2.9x 2023 Notes After Avient Protective Materials Acquisition $3.15B 2022 TRANSFORMATIONAL PORTFOLIO ENHANCEMENTS 5 EBITDA margins expanded from 12% to 16% Diversified end markets with reduced exposure to more cyclical industries Dyneema® Acquisition $1.48B acquisition strengthens composites platform Significantly improved EBITDA margins $950M divestiture results in 100% specialty sales Strong exit multiple of 10x TTM EBITDA despite market volatility Distribution Divestiture Improved Portfolio GROWING COMPOSITES PLATFORM CONTRIBUTIONS TO SEM SEGMENT 6 Note: 2022 is pro forma for Avient Protective Materials 2016 Sales 2022 Sales Advanced Composites 51% $560M $1,300M Advanced Composites 9% COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D T A P E S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 7 ADVANCED COMPOSITES PERFORMANCE 8 (1) Pro forma for the acquisition of Avient Protective Materials Sales $51 $84 $212 $668 2016 2018 2020 2022 $4 $10 $41 $169 2016 2018 2020 2022 EBITDA (1) (1) ($ in millions) PORTFOLIO EVOLUTION AND EPS EXPANSION 9 Adj. EBITDA Margins (1) 5.4% 11.5% 16.2% 2006 2018 2022PF $142 $408 $592 2006 2018 2022PF 2006 figures exclude joint venture results 2022 pro forma for the acquisition of Avient Protective Materials Adj.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.

1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf If adhesion is poor, the composite can fail. Molding with Long-Fiber Composites To preserve the fiber size, use long-fiber compound pellets instead of standard pellets.