Ultra Clean Holdings Appoints New CEO and CBO to Drive Semiconductor Growth

Ultra Clean Holdings Strengthens Leadership with Key Appointments

Ultra Clean Holdings, Inc. (Nasdaq: UCT), a leading provider of critical subsystems and components for the semiconductor industry, announces the appointment of James Xiao as its new Chief Executive Officer, effective September 2, 2025. The Board of Directors expresses strong enthusiasm for Mr. Xiao's arrival, citing his extensive industry expertise and strategic capabilities in semiconductor capital equipment. Chairman Clarence Granger emphasizes Mr. Xiao's proven track record of leading multi-billion-dollar growth initiatives and transforming complex operations into high-performing, revenue-generating entities. With over 20 years of experience in the semiconductor, solar, and display sectors, Mr. Xiao's previous tenure at Applied Materials showcases his ability to drive operational excellence and achieve significant margin improvements through strategic transformations.

Mr. Xiao's academic background further complements his leadership qualifications. He holds a Bachelor of Science in Applied Physics from Dalian University of Technology and an MBA from Indiana University's Kelley School of Business, augmented by executive leadership training at Stanford University. His vast experience positions him to enhance Ultra Clean Holdings' growth trajectory in the semiconductor market, a sector poised for continued expansion due to rising demand for advanced technologies. The appointment of Mr. Xiao aligns with the company's strategic vision of leveraging expert leadership to accelerate innovation and improve its offerings within the industry.

In addition to Mr. Xiao's appointment, Ultra Clean Holdings has named Chris Cook as its Chief Business Officer, effective immediately. Previously the President of UCT's Products Division, Cook has played a pivotal role in expanding the company's product portfolio and strengthening customer relationships. Chairman Granger highlights Cook's contributions and outlines his new responsibilities, which include leading the company's commercial strategy and focusing on strategic partnerships and market opportunities in the global semiconductor landscape. Cook brings 28 years of experience from various leadership positions in semiconductor and electronic systems firms, demonstrating a commitment to driving profitable growth and optimizing operations within UCT.

Ultra Clean Holdings continues to focus on its core mission of providing integrated outsourced solutions and ultra-high purity cleaning services to the semiconductor industry. With new leadership in place, the company is well-positioned to navigate the evolving market landscape and seize growth opportunities, all while enhancing its commitment to innovation and operational excellence. More information can be found on their website at www.uct.com.