Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. (UCT) is a developer and supplier of critical subsystems, components, parts, and ultra-high purity cleaning and analytical services, primarily for the semiconductor industry. The company provides an integrated outsourced solution for major subassemblies, offering improved design-to-delivery cycle times, design for manufacturability, prototyping, and part and component manufacturing. UCT also offers tool chamber parts cleaning and coating, and micro-contamination analytical services. UCT operates through two segments: Products and Services. The Products segment designs, engineers, and manufactures production tools, components, parts, and modules and subsystems for the semiconductor and display capital equipment markets. Products include chemical delivery modules, frame assemblies, gas delivery systems, fluid delivery systems, precision robotics, and process modules, along with 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 semiconductor device makers and wafer fabrication equipment (WFE) markets. UCT ships most of its products and provides most services to U.S.-registered customers with both domestic and international locations. In addition to U.S. manufacturing and service operations, UCT manufactures products and provides parts cleaning and other related services in its Asia Pacific (APAC) and Europe and Middle East (EMEA) facilities to support local and U.S.-based customers. The company conducts its operating activities primarily through its subsidiaries. International revenues represented 75.9%, 73.0%, and 69.6% of total revenues for fiscal years ended 2025, 2024, and 2023, respectively.