Simpson Manufacturing Co., Inc., through its subsidiaries, designs, engineers, manufactures, and sells structural solutions for wood, concrete, and steel connections in North America, Europe, and the Asia Pacific. The company offers connectors, holddowns, and truss connector plates; nails, screws, staples fasteners, and screw fastening systems; and pre-fabricated steel, wood shearwalls, anchor tiedown systems, and yield-link connections. It also provides adhesives, mechanical anchors, carbide drill bits, and powder-actuated pins and tools; grouts, coatings, sealers, mortars, fiberglass and fiber-reinforced polymer systems and asphalt products. In addition, the company offers engineering and design services, as well as software solutions. It markets its products to the residential construction, industrial, commercial and infrastructure construction, remodeling and do-it-yourself markets. The company was founded in 1956 and is headquartered in Pleasanton, California.