{"transactions":[{"id":4943,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":10256,"kind":"person","name":"Keogh Michael Dennis","position":1,"cik":"0002153749","reported_name":"Keogh Michael Dennis","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-04T22:23:00.000Z","date":"2026-08-31","kind":"grant","planned":false,"acquired":true,"shares":20917,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of August 31, 2026."}],"balance_after":20917,"source":{"system":"sec-edgar","filing":"0000950103-26-013632","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2153749/000095010326013632/ownership.xml","form_type":"4"}}]}