Capstone Holding Corp. distributes and installs building products in the United States and Canada through its subsidiaries. It operates in two segments, TotalStone and Carolina Stone, offering manufactured stone veneer under the Cultured Stone, Dutch Quality Stone, and Toro Stone brands; natural stone under the Pangaea Stone brand; panelized stone systems under the Interloc brand; mechanically attached stone veneer systems under the Beon Stone brand; a moisture management system under the D-Rain brand; landscape and hardscape products under the Aura Natural Landscapes brand; and modular masonry fireplaces under the Isokern brand. Its customers include masonry dealers, brick distributors, landscape yards, hearth and home dealers, building material dealers, contractors, builders, and homeowners. The company was formerly known as Capstone Therapeutics Corp. and changed its name to Capstone Holding Corp. in February 2022. It was incorporated in 1987 and is headquartered in Alsip, Illinois.