CLEVELAND – Using a collaborative and progressive approach to innovation, PolyOne Corporation is helping its customer TenPoint Crossbow Technologies to improve performance of its renowned products. Patterson, president and chief executive officer, PolyOne Corporation. Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

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Setting and periodically reviewing environmental objectives and targets assures excellence in environmental leadership. Ashish Khandpur President and CEO December 18, 2023 SAFETY & HEALTH POLICY Avient Corporation believes that safety and health are the highest corporate priority. Ashish Khandpur President and CEO December 18, 2023 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems.

Both of these advanced long-fiber technologies are now commercially available in Asia. Jennifer Huang Senior Manager, Marketing Communications, Asia PolyOne Corporation +86 21 60284888 jennifer.huang@avient.com Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

We are committed to helping our customers develop and manufacture alternative energy applications. Technology Highlights Glasforms™ Pultrusion Technologies offer exceptional strength-to-weight ratio for continuous fiber reinforced composites for structural wind turbine components 

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Additional iterations are in development for other high-performance resins, including polyethersulfone (PES) and polysulfone (PSU). Avient Corporation (NYSE: AVNT), with 2021 revenues of $4.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

PolyOne Corporation Investor Day 2012 PolyOne Investor Presentation Gabelli & Company 5th Annual Specialty Chemical Conference March 20, 2014 • In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. The non-GAAP financial measures include: adjusted EPS, earnings before interest, tax, depreciation and amortization (EBITDA), adjusted EBITDA, net debt, Specialty platform operating income, Specialty platform gross margin percentage, adjusted operating income, return on invested capital, net debt/ EBITDA, and the exclusion of corporate charges in certain calculations. Platform operating income mix percentage 2005Y* 2006* 2008Y* 2010Y* 2013Y Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 17.6 $ 49.7 $ 57.2 Global Color, Additives and Inks 4.3 8.9 28.1 37.7 104.0 Designed Structures and Solutions - - - - 33.4 Specialty Platform $ 4.7 $ 12.8 $ 45.7 $ 87.4 $ 194.6 Performance Products and Solutions 75.7 64.2 31.3 54.0 56.0 Distribution 19.5 19.2 28.1 42.0 63.3 SunBelt Joint venture 91.9 102.9 28.6 18.9 - Corporate (51.5) 34.5 (425.1) (27.7) (82.4) Operating income (loss) GAAP $ 140.3 $ 233.6 $ (291.4) $ 174.6 $ 231.5 Less: Corporate operating expense 51.5 (34.5) 425.1 27.7 82.4 Operating income excluding Corporate $ 191.8 $ 199.1 $ 133.7 $ 202.3 $ 313.9 Specialty platform operating mix percentage 2% 6% 34% 43% 62% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.