Ultra Clean Holdings, Inc.

ITEM 1. Legal Proceedings

From time to time, we are subject to various legal proceedings and claims, either asserted or unasserted, that arise in the ordinary course of business. Although the outcome of the various legal proceedings and claims cannot be predicted with certainty, we have not had a history of outcomes to date that have been material to our Condensed Consolidated Statement of Operations and do not believe that any of these proceedings or other claims will have a material adverse effect on our condensed consolidated financial condition or results of operations.

On March 24, 2025, a putative securities class action was filed in the United States District Court for the Northern District of California, captioned Ofir Schweiger v. Ultra Clean Holdings, Inc., et al., (Case No. 3:25-cv-02768), against the Company and our former Chief Executive Officer, James Scholhamer, and our Chief Financial Officer, Sheri Savage. The lawsuit brings claims under Section 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder, alleging that the Company and certain of its officers have knowingly made materially misleading statements about demand in the Chinese market for the Company’s products to artificially inflate the price of the Company’s common stock, while knowing that the Company was experiencing softening demand. The action purports to be brought on behalf of those who purchased or otherwise acquired the Company’s publicly traded securities between May 6, 2024 and February 24, 2025, and seeks unspecified damages and other relief. The case is still in its early stages. Management believes these claims to be meritless and intends to vigorously defend against them. On August 1, 2025, the Company was served with a derivative suit filed with the Superior Court of California, County of Alameda, which simply copied the allegations in the class action and relabeled them from securities claims to fiduciary claims, naming the entire Board and the Company. There is no assurance that the Company will be successful in its defense or that insurance will be available or adequate to fund any settlement or judgment or the litigation costs. The Company cannot reasonably estimate any loss or range of loss that may arise from this case.