Hallmark Building Supplies is a distributor and marketer of construction building materials based in Omaha, Nebraska, with a 50-year history founded in 1974. The company operates as a 100% associate-owned Employee Stock Ownership Plan and distributes branded products including DuPont Tyvek® weather resistive barriers and roofing underlayments, DuPont Corian® solid surface and quartz products, and DuPont flashing and accessories. Hallmark also owns Levanté®, LLC, a manufacturer of prefabricated balconies, and provides technical support, training, education, and business consulting services to customers. The company operates multiple warehouse locations across the United States and was named the 2025 DuPont Tyvek® Distributor of the Year.
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