Ultra Clean Holdings, Inc.
Ultra Clean Holdings, Inc. supplies critical subsystems, precision components, and ultra-high-purity cleaning and analytical services for the semiconductor industry. Its business is organized around Products and Services, with operations in the United States, Asia Pacific, and Europe and the Middle East through subsidiaries.
Fiscal year 2025 · change from previous year
Development 2020–2025
Business
Share of revenueDesign and manufacture of production tools, components, modules, and subsystems for semiconductor and display equipment.
Ultra-high-purity cleaning, recoating, surface encapsulation, and contamination analysis for tool parts.
Products
Reported · share of revenue- Products87.6 %
- Services12.4 %
Source: 10-K FY2025, revenue the company reports per product line (SEC XBRL). Shares are of the lines shown and add up to 100 %.
Customers
UCT sells primarily to semiconductor capital equipment OEMs and semiconductor device manufacturers, with additional exposure to display and other industrial end markets. Its customer base is concentrated, with Applied Materials and Lam Research representing major customers and the top two customers accounting for a large share of revenue. The company also serves IDM, memory, foundry, OEM, and sub-tier supplier customers across the semiconductor value chain.
Buy critical subsystems, gas and fluid delivery systems, and assemblies for wafer fabrication tools.
Buy cleaning, coating, recoating, and analytical services for tool parts and contamination control.
Buy selected products and subsystems for display capital equipment applications.
Buy specialized components or services where high-purity handling and precision matter.
Strategy
UCT’s strategy centers on being an outsourced partner for complex semiconductor subsystems and high-purity service workflows. The company emphasizes design-for-manufacturability, prototyping, integrated manufacturing, and contamination-control services that deepen customer qualification and switching costs. It also invests in manufacturing capacity and enterprise systems to support global customer demand and operational execution.
More subsystem and module content increases customer dependence and program stickiness.
Cleaning, recoating, and analytics are recurring needs linked to installed semiconductor equipment.
Local presence helps serve multinational OEM and fab customers across major regions.
Geography
Q1/2026UCT ships a majority of its products and performs most of its services for U.S.-registered customers that operate domestically and internationally. It also manufactures and provides services in APAC and EMEA to support local customers and U.S.-based customers, making the business operationally distributed across major semiconductor manufacturing regions. In reported quarterly disclosures, international revenue has represented roughly three-quarters of total revenue, reflecting the company’s global customer footprint.
Share of the revenue the company reports by geography.
Risks
UCT is exposed to the cyclicality of semiconductor and display capital spending, which can change quickly with customer demand and industry inventory swings. Its business is also concentrated in a small number of large OEM and IDM customers, so program losses, insourcing, or qualification changes can have outsized effects. Operational risks include inventory management, long supplier lead times, third-party property held at its facilities, and goodwill impairment tied to reporting-unit performance.
- Customer concentrationImpact: HighLikelihood: High
A small number of OEM customers account for a large share of revenue, increasing bargaining power and volatility.
Exposure - Semiconductor and display industry cyclicalityImpact: HighLikelihood: Medium
Demand for UCT's products and services depends on customer capital spending and fab activity.
Exposure: Products and Services segments
- Customer insourcing and qualification riskImpact: MediumLikelihood: High
Customers may bring subsystem manufacturing or cleaning in-house, and switching providers can require requalification.
Exposure - Inventory and supply-chain executionImpact: MediumLikelihood: High
Long lead times and demand swings can create shortages, excess inventory, or missed sales.
Exposure - Third-party property and liability exposureImpact: MediumLikelihood: Medium
The company holds customer and supplier-owned property at its facilities and must safeguard it.
Exposure
Accounting
Judgemental itemsProducts are recognized when shipped and services when performed, which can shift revenue between periods and regions.
Impact: Quarterly comparability and geographic mix
Inventory is a large balance-sheet asset and must reflect demand, obsolescence, and production timing.
Impact: Gross margin and working capital
Management uses discounted cash flow assumptions to test reporting units, and impairment can create large non-cash charges.
Impact: Earnings and asset values
Manufacturing and service facilities require estimates of useful lives and recoverability.
Impact: Depreciation, amortization, and impairment risk
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Last updated: 24/09/2026