Christopher S. Cook - 30 Apr 2025 Form 4 Insider Report for Ultra Clean Holdings, Inc. (UCTT)

Role: President, Products Division
Signature: /s/ Paul Y. Cho, as attorney-in-fact for Christopher S. Cook
Issuer symbol: UCTT
Transactions as of: 30 Apr 2025
Net transactions value: -$124,047
Form type: 4
Filing time: 02 May 2025, 21:01:28 UTC
Previous filing: 29 Apr 2025
Next filing: 03 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Cook Christopher S	President, Products Division	ULTRA CLEAN HOLDINGS, INC., 26462 CORPORATE AVE, HAYWARD	/s/ Paul Y. Cho, as attorney-in-fact for Christopher S. Cook	02 May 2025	0001927266

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	UCTT	Common Stock	Tax liability	$34,707	-1,855	-2.9%	$18.71	61,104	30 Apr 2025	Direct	F1
transaction	UCTT	Common Stock	Tax liability	$41,630	-2,225	-3.6%	$18.71	58,879	30 Apr 2025	Direct	F1
transaction	UCTT	Common Stock	Tax liability	$47,710	-2,550	-4.3%	$18.71	56,329	30 Apr 2025	Direct	F1
holding	UCTT	Common Stock						4,100	30 Apr 2025	by Trust

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested.