Ultra Clean Holdings, Inc. (NASDAQ: UCTT)

Ultra Clean Holdings, Inc. is a leading developer and supplier of critical subsystems components parts and ultra high purity cleaning and analytical services primarily for the semiconductor industry. The company offers integrated outsourced solutions for major subassemblies improved design to delivery cycle times design for manufacturability prototyping and component manufacturing as well as tool chamber parts cleaning and coating and micro contamination analytical services.

Ultra Clean Holdings generates revenue from two core activities. The Products segment designs engineers and manufactures production tools components parts modules and subsystems for semiconductor and display capital equipment markets. 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 markets. Revenue is derived from sales of these products and fees for these services to a diversified base of semiconductor OEMs IDMs memory foundries and other technologically similar industries.

The company operates through the following segments.

• Products: This segment designs engineers and manufactures production tools components parts modules and subsystems for the semiconductor and display capital equipment markets including chemical delivery modules frame assemblies gas delivery systems fluid delivery systems precision robotics process modules and other high level assemblies.

• Services: This 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 markets.

Ultra Clean Holdings holds a strong position in the semiconductor supply chain as a trusted outsourcing partner for critical subsystems and cleaning services. Principal competitors for gas delivery systems are Ichor Systems Inc and Fujikin Incorporated. For other critical subsystems competitors include Foxsemicon Integrated Technology Inc Jabil Inc VDL ETG Celestica Inc and Benchmark Electronics Inc. For gas delivery component solutions competitors are Swagelok Parker Hannifin Fujikin and Watlow. For cleaning and coating offerings main competitors are KoMiCo SHT EnPro and Pentagon. For analytical services primary competitors are Balazs an Air Liquide company Eurofins and SCAS. The company differentiates itself through its vertically integrated model global footprint long customer relationships and ability to meet stringent quality and delivery requirements.

The company serves a concentrated customer base in the semiconductor capital equipment and semiconductor integrated device manufacturing industries. Its two largest revenue customers are Applied Materials Inc and Lam Research Corporation each accounting for more than 10% of total revenues in fiscal years 2025 2024 and 2023. Together the top two customers represented 58.7% 54.5% and 57.4% of revenues for those years. Approximately 95.7% of fiscal year 2025 revenue came from multiple segments of the semiconductor industry including IDM memory foundry OEM and sub tier suppliers. International revenues accounted for 75.9% of total revenue in fiscal year 2025 73.0% in 2024 and 69.6% in 2023.