B&C COMPANY L I V I N G W A L L P L A N T E R • Non-halogen flame retardant formulation • SBI fire test rating of B-S2-D0 • Good durability and UV stability • Easy to process • Good cost/performance • Provided an optimal balance of fire safety and durability • Improved environmental responsibility for construction application • Supported the appealing design and surface aesthetic Maxxam NHFR Non-Halogen Flame Retardant Polyolefin Formulation KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/maxxam-fr-flame-retardant-formulations-and-maxxam-nhfr-non-halogen-flame-retardant-formulations Slide 1: B&C company

THE SOLUTION The company’s product management team reached out to Avient’s Gordon Composites group to identify an alternative spring solution. Working together to understand the unique requirements for the company’s conveyor application, the engineering team at Avient developed customized flat springs that provide more consistent quality and longer fatigue life than the original components, improving conveyor performance and longevity. THE IMPACT Not only did the Gordon Composites vibratory springs outperform the company’s originally specified spring components, they provided a number of additional benefits: Ready-to-install springs reduced labor and simplified installation Unlike alternative springs, Gordon Composites springs are factory machined to the required size and pre- drilled for a significant reduction in cutting and drilling processes and allowing valuable labor time to be allocated elsewhere.

Each of such adjustments has not yet occurred, are out of the Company's control and/or cannot be reasonably predicted. For the same reasons, the Company is unable to address the probable significance of the unavailable information. Innovation is the lifeblood of a specialty company.

The Company noted it will provide more details on its 2021 outlook during the webcast scheduled for 9:00 a.m. Pro Forma The Company acquired the Clariant Masterbatch business (“CMB”) on July 1, 2020 (the “Acquisition Date”). There will be a question and answer session following the company’s presentation and prepared remarks.

Seller may, during any period of shortage due to any cause, prorate, and allocate its supply of such materials among itself for its own consumption, its subsidiaries, affiliated companies, its accepted orders, contract customers, and its regular customers not then under contract in such a manner as may be deemed fair and reasonable by Seller. With respect to the state of Ohio, this waiver applies to Section 35 Article II of the Ohio Constitution and Ohio Revised Code Sec. 4123.74. .

Garratt joined Avient in 2013 from Marmon Utility, a Berkshire Hathaway company, where he served as president. Garratt’s chemical career began with The Dow Chemical Company, where he served in commercial and marketing roles in Canada and the United States.

She previously served as senior vice president and deputy chief legal officer, global operations at Eaton Corporation, a power management company. Sanders spent over 20 years at 3M Company with various roles of increasing responsibility, culminating as senior vice president and deputy general counsel supporting global business operations for all segments and manufacturing operations.

The company first considered silicone rubber but found it had several drawbacks. The final straw was the company’s inability to achieve its desired glow-in-the- dark effect. THE IMPACT The launch of the glow-in-the-dark control grips exceeded the company’s expectations.

Each of such adjustments has not yet occurred, are out of the Company's control and/or cannot be reasonably predicted. For the same reasons, the Company is unable to address the probable significance of the unavailable information. Innovation is the lifeblood of a specialty company.

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. ASHISH KHANDPUR PRESIDENT & CEO 7 8 PORTFOLIO TRANSFORMATION 8 46% 66% 87% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 2023 % o f A dj us te d EB IT D A Commodity JVs Distribution Performance Products & Solutions Specialty Businesses Adjusted EBITDA from Specialty Applications SUSTAINABILITY AS A GROWTH DRIVER 9 LONG-TERM REVENUE GROWTH DRIVERS Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other 60%+ Key Growth Drivers Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other 0–2% Avient 6% END MARKET OBSERVATIONS (% OF COMPANY SALES) ENERGY DEFENSE TELECOMMUNICATIONS HEALTHCARE 10 TRANSPORTATION INDUSTRIAL BUILDING & CONSTRUCTION 9% CONSUMER PACKAGING 23% 11 REGIONAL OBSERVATIONS (% OF COMPANY SALES) 11 Q 4 2023 RE S U LT S Q4 2023 PERFORMANCE VS. The presentation of these measures may be different from non-GAAP financial measures used by other companies.