AZEK Co Inc.

The AZEK Company Inc. (NYSE: AZEK) is the industry-leading designer and manufacturer of beautiful, low maintenance and environmentally sustainable outdoor living products, including TimberTech® Decking and Railing, Versatex® and AZEK® Trim, and StruXure® pergolas. Consistently awarded and recognized as the market leader in innovation, quality, aesthetics and sustainability, our products are made from up to 85% recycled material and primarily replace wood on the outside of homes, providing a long-lasting, eco-friendly, and stylish solution to consumers. Leveraging the talents of its approximately 2,000 employees and the strength of relationships across its value chain, The AZEK Company is committed to accelerating the use of recycled material in the manufacturing of its innovative products, keeping hundreds of millions of pounds of waste and scrap out of landfills each year, and revolutionizing the industry to create a more sustainable future. The AZEK Company has recently been named one of America’s Most Responsible Companies by Newsweek, a Top Workplace by the Chicago Tribune and U.S. News and World Report, one of Barron’s 100 Most Sustainable U.S. Companies, one of TIME’s World’s Best Companies in Sustainable Growth for 2025, and celebrated in Fast Company’s 2024 Brands That Matter list, where TimberTech was highlighted as a benchmark brand. Headquartered in Chicago, Illinois, the company operates manufacturing and recycling facilities in Ohio, Pennsylvania, Idaho, Georgia,

1. 15-12G filingJul 11, 2025
2. 4 filingJul 2, 2025
3. 4 filingJul 2, 2025
4. 4 filingJul 2, 2025
5. Termination of a Material Definitive Agreement · Completion of Acquisition or Disposition of Assets · Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing · Material Modification to Rights of Security Holders · Changes in Control of Registrant · Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year · Other EventsJul 1, 2025