0001628280-23-031599 4 1 20230901 20230906 20230906 Swyt Greg 0001723433 4 34 001-37961 231240559 C/O ONTO INNOVATION INC. 16 JONSPIN ROAD WILMINGTON MA 01887 ICHOR HOLDINGS, LTD. 0001652535 3674 000000000 E9 1227 3185 LAURELVIEW CT. FREMONT CA 94538 510-897-5200 3185 LAURELVIEW CT. FREMONT CA 94538 4 1 wk-form4_1694039650.xml FORM 4 X0508 4 2023-09-01 0 0001652535 ICHOR HOLDINGS, LTD. ICHR 0001723433 Swyt Greg C/O ICHOR HOLDINGS, LTD. 3185 LAURELVIEW CT FREMONT CA 94538 0 1 0 0 Chief Financial Officer 0 Ordinary Shares, par value $0.0001 2023-09-01 4 A 0 32346 0 A 58086 D Consists of an RSU grant, representing the right to receive Ordinary Shares of Ichor Holdings, Ltd. The RSU vests as follows: 25% vests on September 1, 2024 and the remainder vests ratably on a quarterly basis over a three-year period thereafter. /s/ Chase Rosson by Power of Attorney 2023-09-06