Business Description

Unless expressly indicated or the context requires otherwise, the terms “Ichor,” “Company,” “we,” “us,” “our,” and similar terms in this Annual Report on Form 10-K refer to Ichor Holdings, Ltd. and its consolidated subsidiaries. We were originally incorporated as Celerity, Inc. (“Celerity”) in 1999. Ichor Holdings, Ltd., an exempt limited company incorporated in the Cayman Islands, was formed in March 2012. We completed the initial public offering of our ordinary shares in December 2016. We use a 52- or 53-week fiscal year ending on the last Friday in December. The following table details our fiscal periods included elsewhere in this Annual Report on Form 10-K. All references to 2025, 2024, and 2023, including the quarters thereto, relate to our fiscal periods as so detailed. Fiscal Period Period Ending Weeks in Period Fiscal Year 2025: December 26, 2025 52 First Quarter March 28, 2025 13 Second Quarter June 27, 2025 13 Third Quarter September 26, 2025 13 Fourth Quarter December 26, 2025 13 Fiscal Year 2024: December 27, 2024 52 First Quarter March 29, 2024 13 Second Quarter June 28, 2024 13 Third Quarter September 27, 2024 13 Fourth Quarter December 27, 2024 13 Fiscal Year 2023: December 29, 2023 52 First Quarter March 31, 2023 13 Second Quarter June 30, 2023 13 Third Quarter September 29, 2023 13 Fourth Quarter December 29, 2023 13 Company Overview We are a leader in the design, engineering and manufacturing of critical fluid delivery subsystems and components primarily for semiconductor capital equipment, as well as other industries such as defense/aerospace and medical. Our primary product offerings include gas and chemical delivery subsystems, collectively known as fluid delivery subsystems, which are key elements of the process tools used in the manufacturing of semiconductor devices. Our gas delivery subsystems deliver, monitor and control precise quantities of the specialized gases used in semiconductor manufacturing processes such as etch and deposition. Our chemical delivery subsystems precisely blend and dispense the reactive liquid chemistries used in semiconductor manufacturing processes such as chemical-mechanical planarization, electroplating, and cleaning. We also provide precision-machined components, weldments, e-beam and laser welded components, precision vacuum and hydrogen brazing, surface treatment technologies, and other proprietary products. 1 Table of Contents Fluid delivery subsystems ensure accurate measurement and uniform delivery of specialty gases and chemicals at critical steps in the semiconductor manufacturing processes. Any malfunction or material degradation in fluid delivery reduces yields and increases the likelihood of manufacturing defects in these processes. Most OEMs outsource all or a portion of the design, engineering, and manufacturing of their gas delivery subsystems to a few specialized suppliers, including us. Additionally, many OEMs are outsourcing the design, engineering, and manufacturing of their chemical delivery subsystems due to the increased fluid expertise required to manufacture these subsystems. Outsourcing these subsystems allows OEMs to leverage their suppliers’ highly specialized engineering, design, and production skills while focusing their internal resources on their own value-added processes. Outsourcing enables OEMs to reduce their costs and development time, as well as provide growth opportunities for specialized subsystems suppliers like us. Our goal is to be a leading supplier of fluid delivery subsystems and components to OEMs engaged in manufacturing capital equipment to produce semiconductors and to leverage our technology and products to expand the share of our addressable markets. To achieve this goal, we engage with our customers early in their design and development processes and utilize our deep engineering resources and operating expertise, as well as our expanded product portfolio, to jointly create, innovate, and advance solutions that are designed to meet the current and future needs of our customers. We believe this approach enables us to design products that meet the precise specifications our customers demand, allows us to be the sole supplier of these subsystems during the initial production ramp, and positions us to be the preferred supplier for the full lifespan of the process tool.…