Overview

A class action lawsuit has been filed against Ultra Clean Holdings, Inc. (“Ultra Clean” or the “Company”) and certain of the Company’s former senior executive officers alleging violations of the federal securities laws.  The Company’s common stock traded on the NASDAQ under the symbol “UCTT.”

The Ultra Clean class action lawsuit was brought on behalf of all persons and entities who purchased or otherwise acquired Ultra Clean securities between May 6, 2024, and February 24, 2025, both dates inclusive (the “Class Period”).

Ultra Clean is a developer and supplier of subsystems, components, parts, and ultra-high purity cleaning and analytical services primarily for the semiconductor industry.  Ultra Clean offers its customers an integrated outsourced solution for major subassemblies, improved design-to-delivery cycle times, design for manufacturability, prototyping and part and component manufacturing, as well as tool chamber parts cleaning and coating, and micro-contamination analytical services.

The Company reports results for two segments: Products and Services.  The Products segment primarily designs, engineers, and manufactures production tools, components and 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, process modules as well as 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 the semiconductor device makers and wafer fabrication equipment markets.

The Ultra Clean class action lawsuit alleges that Defendants, throughout the Class Period, provided investors with material information concerning the elevated demand from Chinese original equipment manufacturers (OEMs) and in the general Chinese domestic market for Ultra Clean’s products throughout the fiscal year 2024.  Defendants’ statements included, among other things, reports of increased demand for the Company’s products and services in the domestic Chinese market and reports of increased revenue, including revenue doubling with no signs of slowing down, due to the elevated demand in China for Ultra Clean’s products and services.

Defendants provided these overwhelmingly positive statements to investors while, at the same time, disseminating materially false and misleading statements and/or concealing material adverse facts concerning the true state of the demand for Ultra Clean’s products and services in the domestic Chinese market; notably, that the Company was facing a customer ramp issue with one of its critical customers, as well as a combination of inventory and demand corrections, which, ultimately, caused weakness for Ultra Clean in China.

Company’s executives revealed that Ultra Clean was facing “demand softness” in China.  In particular, Ultra Clean was facing decreased demand in China due to extended qualification timelines and inventory absorption.  Investors and analysts reacted immediately to these revelations.  The price of Ultra Clean’s common stock declined dramatically.

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If you purchased or otherwise acquired Ultra Clean securities between May 6, 2024, and February 24, 2025, both dates inclusive, and you wish to serve as lead plaintiff in this lawsuit, we encourage you to submit your information to DiCello Levitt LLP via the form on this page. 

You can also contact DiCello Levitt partner Brian O’Mara by calling (888) 287-9005 or at [email protected]. 

The deadline to apply to the Court to serve as lead plaintiff in the Ultra Clean class action lawsuit is May 23, 2025.