X0306 4 2021-01-07 0 0001275014 Ultra Clean Holdings, Inc. UCTT 0001283710 GRANGER CLARENCE L ULTRA CLEAN HOLDINGS, INC. 26462 CORPORATE AVE HAYWARD CA 94545 1 0 0 0 Common Stock 2021-01-07 4 S 0 2000 38 D 106438 D Common Stock 2021-01-07 4 S 0 429 38.0002 D 106009 D Common Stock 2021-01-08 4 S 0 1636 38 D 104373 D Shares sold pursuant to a previously established Rule 10b5-1 Plan. /s/ Paul Y. Cho, as attorney-in-fact for Clarence L. Granger 2021-01-11