ICHOR HOLDINGS, LTD.

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.