Ultra Clean Holdings, Inc.
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 operates through two reportable segments: Products and Services. The Products segment designs,… From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Ultra Clean Holdings, Inc. does
In the company’s own words
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 operates through two reportable segments: Products and Services. The Products segment designs, engineers, and manufactures production tools, components, modules, and subsystems for semiconductor and display capital equipment markets, including chemical delivery modules, gas delivery systems, fluid delivery systems, precision robotics, and process modules. The Services segment provides ultra-high purity parts cleaning, process tool part recoating, surface encapsulation, and high-sensitivity micro-contamination analysis for semiconductor device makers and wafer fabrication equipment markets.
Ultra Clean Holdings serves customers through an integrated outsourced solution model that emphasizes vertically integrated capabilities, improved design-to-delivery cycle times, design for manufacturability, prototyping, and component manufacturing. The company's website is www.uct.com.
As of December 26, 2025, Ultra Clean Holdings employed 7,411 people, including 3,772 in Asia Pacific and 1,663 in Europe and Middle East regions. The company maintains a global manufacturing and service footprint with facilities in the United States, Asia Pacific, Europe, and the Middle East to support local and U.S.-based customers. International revenues represented 75.9 percent of total revenues in fiscal 2025.
The company's customer base is highly concentrated within the semiconductor capital equipment industry. Applied Materials, Inc. and Lam Research Corporation are the two largest customers, collectively accounting for 58.7 percent of fiscal 2025 revenues. Approximately 95.7 percent of total revenues come from multiple segments of the semiconductor industry, including integrated device manufacturers, memory, foundry, original equipment manufacturers, and sub-tier suppliers.
Ultra Clean Holdings maintains competitive advantages through its vertically integrated solution capabilities, global supply chain management, advanced analytical and testing capabilities, local presence near major OEM facilities, precision fabrication expertise, and proprietary cleaning and analytical processes. The company holds over 100 patents and relies on trade secrets, confidentiality provisions, and proprietary know-how to protect its intellectual property.
Company details
- Sector
- Information Technology
- Industry (SIC)
- Semiconductors
- Headquarters
- HAYWARD, CA
- Fiscal year end
- December
- CIK
- 1275014
- SIC
- 3674
Financial performance, year by year
Fiscal 2014–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Ultra Clean Holdings, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · Ultra Clean Holdings, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Ultra Clean Holdings, Inc.’s bonds, as funds hold them
Funds report holding 1 issues of Ultra Clean Holdings, Inc.’s debt, $264.15M at market value — what funds hold, not the company’s total debt.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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