Ultra Clean CIO awarded 5,896 restricted stock units

McKibben Jeffrey L. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

McKibben Jeffrey L. reported acquisition or exercise transactions in this Form 4 filing.

Ultra Clean Holdings, Inc. reported that Chief Information Officer Jeffrey L. McKibben received an equity award of 5,896 shares of common stock as a grant with no cash price per share. Following this award, he directly holds 17,245 common shares.

The grant is in the form of restricted stock units that vest over three years, with equal portions vesting on each anniversary of the vesting commencement date of May 22, 2026. This structure ties the value of the award to McKibben’s continued service and the company’s share performance over time.

Insider Trade Summary

Grant/Award: 5,896 shares

Grant/Award 1 txn

Insider McKibben Jeffrey L.

Role Chief Information Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	5,896	$0.00	$0.00

Holdings After Transaction: Common Stock — 17,245 shares (Direct)

Footnotes (1)

1. F1. Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of May 22, 2026.

Key Figures

Shares granted: 5,896 shares Transaction price per share: $0.0000 per share Total shares after transaction: 17,245 shares +2 more

5 metrics

Shares granted 5,896 shares Equity award of common stock to CIO on May 22, 2026

Transaction price per share $0.0000 per share Grant/award acquisition, not an open-market purchase

Total shares after transaction 17,245 shares CIO’s direct holdings following the grant

Vesting period 3 years Restricted stock units vest in equal annual parts

Vesting commencement date May 22, 2026 Start date for three-year RSU vesting schedule

Key Terms

Restricted stock units, vest, grant, award, or other acquisition

3 terms

Restricted stock units financial

"Restricted stock units vest over 3 years with equal parts vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vest financial

"units vest over 3 years with equal parts vesting on each anniversary"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

grant, award, or other acquisition financial

"transaction code description indicates Grant, award, or other acquisition"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did UCTT report for CIO Jeffrey McKibben?

Ultra Clean Holdings reported an equity grant to CIO Jeffrey L. McKibben of 5,896 shares of common stock. The shares were awarded at no cash price per share as part of his compensation package, increasing his direct holdings to 17,245 shares.

How many UCTT shares did the CIO receive in this Form 4 filing?

Jeffrey L. McKibben received 5,896 shares of Ultra Clean common stock. These shares were granted as an award rather than purchased, with a reported transaction price of $0.0000 per share according to the Form 4 data provided.

What are Jeffrey McKibben’s total UCTT holdings after this transaction?

After the grant, Jeffrey L. McKibben directly holds 17,245 shares of Ultra Clean common stock. This total includes the newly awarded 5,896 shares, reflecting his updated equity position as reported in the Form 4 filing.

How do the granted UCTT restricted stock units vest for the CIO?

The restricted stock units vest over three years, in equal parts on each anniversary of the vesting commencement date of May 22, 2026. This creates a multi-year incentive structure that rewards ongoing service with Ultra Clean Holdings.

Was cash paid for the UCTT shares granted to the CIO in this Form 4?

No cash was paid for the shares granted to the CIO. The transaction price per share is reported as $0.0000, indicating the 5,896 shares were received as a grant or award rather than an open-market purchase.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/27/2026 - 09:49 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McKibben Jeffrey L.

(Last) (First) (Middle)

ULTRA CLEAN HOLDINGS, INC.

26462 CORPORATE AVE

(Street)

HAYWARD CALIFORNIA 94545

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ultra Clean Holdings, Inc. [ UCTT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Information Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/22/2026		A		5,896(1)	A	$0	17,245	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

	/s/ Paul Y. Cho, as attorney-in-fact for Jeffrey L. McKibben	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)