Exhibit 99.1 Press Release Source: Ultra Clean Holdings, Inc. Ultra Clean Reports First Quarter 2025 Financial Results HAYWARD, Calif., April 28, 2025 /PRNewswire/ Ultra Clean Holdings, Inc. (Nasdaq: UCTT), today reported its financial results for the first quarter ended March 28, 2025. "UCT's first quarter results were impacted by softening demand late in the quarter as customers reassessed their spending in reaction to an increasingly uncertain and volatile business environment," said Clarence Granger, UC ...

HAYWARD, Calif., April 28, 2025 /PRNewswire/ -- Ultra Clean Holdings, Inc. (Nasdaq: UCTT), today reported its financial results for the first quarter ended March 28, 2025."UCT's first quarter results were impacted by softening demand late in the quarter as customers reassessed their spending in reaction to an increasingly uncertain and volatile business environment," said Clarence Granger, UCT Interim CEO. "Amid reduced industry visibility and an increasingly dynamic geopolitical landscape, we are focused o ...

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Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Ultra Clean To Contact Him Directly To Discuss Their Options If you purchased or acquired securities in Ultra Clean between May 6, 2024 and February 24, 2025 and would like to discuss your legal rights, call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310). [You may also click here for additional information] NEW YORK, April 26, 2025 (GLOBE NEWSWIRE) -- ...

NEW YORK, April 25, 2025 /PRNewswire/ -- Levi & Korsinsky, LLP notifies investors in Ultra Clean Holdings, Inc. ("Ultra Clean" or the "Company") (NASDAQ: UCTT) of a class action securities lawsuit.CLASS DEFINITION: The lawsuit seeks to recover losses on behalf of Ultra Clean investors who were adversely affected by alleged securities fraud between May 6, 2024 and February 24, 2025. Follow the link below to get more information and be contacted by a member of our team:https://zlk.com/pslra-1/ultra-clean-hold ...

NEW YORK, April 24, 2025 (GLOBE NEWSWIRE) -- Levi & Korsinsky, LLP notifies investors in Ultra Clean Holdings, Inc. ("Ultra Clean" or the "Company") (NASDAQ: UCTT) of a class action securities lawsuit. CLASS DEFINITION: The lawsuit seeks to recover losses on behalf of Ultra Clean investors who were adversely affected by alleged securities fraud between May 6, 2024 and February 24, 2025. Follow the link below to get more information and be contacted by a member of our team: https://zlk.com/pslra-1/ultra-clea ...

NEW YORK, April 23, 2025 (GLOBE NEWSWIRE) -- The Gross Law Firm issues the following notice to shareholders of Ultra Clean Holdings, Inc. (NASDAQ: UCTT). Shareholders who purchased shares of UCTT during the class period listed are encouraged to contact the firm regarding possible lead plaintiff appointment. Appointment as lead plaintiff is not required to partake in any recovery. CONTACT US HERE: https://securitiesclasslaw.com/securities/ultra-clean-holdings-inc-loss-submission-form/?id=144431&from=3 CLASS ...

NEW YORK, April 22, 2025 /PRNewswire/ -- Levi & Korsinsky, LLP notifies investors in Ultra Clean Holdings, Inc. ("Ultra Clean" or the "Company") (NASDAQ: UCTT) of a class action securities lawsuit.CLASS DEFINITION: The lawsuit seeks to recover losses on behalf of Ultra Clean investors who were adversely affected by alleged securities fraud between May 6, 2024 and February 24, 2025. Follow the link below to get more information and be contacted by a member of our team:https://zlk.com/pslra-1/ultra-clean-hold ...

NEW YORK, April 21, 2025 (GLOBE NEWSWIRE) -- Levi & Korsinsky, LLP notifies investors in Ultra Clean Holdings, Inc. ("Ultra Clean" or the "Company") (NASDAQ: UCTT) of a class action securities lawsuit. CLASS DEFINITION: The lawsuit seeks to recover losses on behalf of Ultra Clean investors who were adversely affected by alleged securities fraud between May 6, 2024 and February 24, 2025. Follow the link below to get more information and be contacted by a member of our team: https://zlk.com/pslra-1/ultra-clea ...

NEW YORK, April 21, 2025 (GLOBE NEWSWIRE) -- Pomerantz LLP announces that a class action lawsuit has been filed against Ultra Clean Holdings, Inc. (“Ultra Clean” or the “Company”) (NASDAQ: UCTT). Such investors are advised to contact Danielle Peyton at newaction@pomlaw.com or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext. 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased. The class action concerns whether Ultra Clean and ...