Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. develops and supplies critical subsystems, components, ultra-high purity cleaning, and analytical services primarily for the semiconductor industry. The company operates through two main business segments: Products and Services. Its Products segment designs, engineers, and manufactures gas and chemical delivery systems, fluid delivery modules, precision robotics, frame assemblies, and process modules. Its Services segment provides precision tool chamber parts cleaning, recoating, surface encapsulation, and micro-contamination analysis. UCT primarily serves semiconductor capital equipment manufacturers and device makers, while also supplying customers across the display, medical, energy, consumer, and industrial sectors.

The company operates manufacturing and service facilities across the United States, the Asia Pacific region, and Europe and the Middle East, with engineering teams located internationally in Singapore, Taiwan, the United Kingdom, and Israel. As of late 2025, UCT employed 7,411 individuals globally. The company conducts business worldwide, though the provided text does not disclose its specific headquarters location.

Summary of the business section of Ultra Clean's latest annual report, written by StockData.

“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.

“As of December 26, 2025, we had 7,411 employees, of which 463 were temporary.”