Ultra Clean Holdings, Inc. Common Stock

Ultra Clean Holdings, Inc. engages in the development and supplying of critical subsystems, components and parts, and ultra-high purity cleaning and analytical services for the semiconductor industry. The company is headquartered in Hayward, California and currently employs 7,411 full-time employees. The company went IPO on 2004-03-25. The company offers its customers an integrated outsourced solution for major subassemblies, design-to-delivery cycle times, design for manufacturability, and prototyping. The Company’s segments are Products and Services. The Products segment primarily designs, engineers, and manufactures production tools, components, parts, and modules and subsystems. The Products segment includes chemical delivery modules, frame assemblies, gas delivery systems, fluid delivery systems, precision robotics and process modules as well as other high-level assemblies. The Services segment provides ultra-high purity parts cleaning, process tool part recoating, surface encapsulation and high sensitivity micro contamination analysis primarily for the semiconductor device makers and wafer fabrication equipment (WFE) markets.