Jinsong Xiao - 22 May 2026 Form 4 Insider Report for Ultra Clean Holdings, Inc. (UCTT)

Reporting relationship: Chief Executive Officer
Issuer ticker: UCTT
Reported as of: 22 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 May 2026, 21:50:46 UTC
Prior SEC filing: 30 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Paul Y. Cho, as attorney-in-fact for Jinsong Xiao

Key filing fact

Jinsong Xiao filed Form 4 for Ultra Clean Holdings, Inc. (UCTT) on 27 May 2026.

Key facts

This page summarizes Jinsong Xiao's Form 4 filing for Ultra Clean Holdings, Inc. (UCTT).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 27 May 2026, 21:50.

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

CIK 0002086234 Primary reporting owner

Shares, units, or other non-derivative securities reported in this filing.

UCTT transaction

Award

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Explanation of responses 1 footnote

Footnote F1

Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of May 22, 2026.