Ultra Clean Holdings, Inc. provided earnings guidance for the first quarter of 2023. For the first quarter of 2023, the company expects revenue in the range of $395.0 million to $445.0 million which includes a negative estimated impact of approximately $30 million related to a cybersecurity event recently announced by one of its suppliers. The company expects GAAP diluted net income (loss) per share to be between $(0.09) and $0.10.