Ultra Clean Holdings shares rise 4.35% intraday after appointing James Xiao as CEO.

Ultra Clean Holdings, Inc. rose 4.35% intraday, with the company announcing the appointment of James Xiao as Chief Executive Officer effective September 2, 2025. Xiao is a proven technology leader with a successful track record of unlocking value through cutting-edge technologies, market expansion, and operational excellence. Additionally, the company appointed Chris Cook as Chief Business Officer, who has successfully grown the product portfolio and expanded customer relationships.