Ultra Clean Appoints Robert Wunar as Chief Operating Officer

Core Viewpoint - Ultra Clean Holdings, Inc. has announced a leadership change with the departure of Harjinder Bajwa and the appointment of Robert Wunar as Chief Operating Officer, effective March 23, 2026, which is expected to enhance the company's operational capabilities in the semiconductor industry [1][2]. Company Overview - Ultra Clean Holdings, Inc. is a leading developer and supplier of critical subsystems, components, parts, and ultra-high purity cleaning and analytical services primarily for the semiconductor industry [5]. - The company offers integrated outsourced solutions for major subassemblies, improved design-to-delivery cycle times, design for manufacturability, prototyping, and high-precision manufacturing [5]. Leadership Change - Harjinder Bajwa has left the company effective January 25, 2026, and Robert Wunar will take over as COO on March 23, 2026 [1]. - Robert Wunar brings over 30 years of experience in operations and supply chain leadership within the semiconductor capital equipment industry, having previously served as COO/Managing Director at Applied Materials, Inc. [2][3]. Robert Wunar's Qualifications - Wunar has a strong track record in driving gross-margin improvement, enhancing on-time delivery, and reducing manufacturing cycle times [3]. - He holds a Bachelor of Science degree in Electronics Engineering Technology from DeVry Institute of Technology and has experience in building high-performance, cross-functional teams in complex manufacturing environments [4]. Strategic Importance - CEO James Xiao emphasized that Wunar's operational excellence and focus on speed and agility will be crucial as the company prepares for the next semiconductor ramp [3]. - Wunar's ability to translate strategy into disciplined execution across global operations is expected to ensure quality, responsiveness, reliability, and trust for customers [3].