Ultra Clean CFO granted 20,917-share stock award

Ultra Clean Holdings’ CFO received a three-year time-vested restricted stock unit award of 20,917 shares.

Rhea-AI Filing Summary

Ultra Clean Holdings, Inc. (symbol: UCTT) is the issuer of record for a Form 4 filing submitted to the SEC. Keogh Michael Dennis reported acquisition or exercise transactions in this Form 4 filing.

Ultra Clean Holdings, Inc. (UCTT) reported that its Chief Financial Officer, Michael Dennis Keogh, received a grant of 20,917 shares of Common Stock on August 31, 2026 as a stock-based award at a stated price of $0.00 per share. According to the award terms, these shares are 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 August 31, 2026. Following this grant, Keogh is reported to hold 20,917 shares directly, and no Rule 10b5-1 trading plan is indicated.

Insider Trade Summary

Grant/Award: 20,917 shares

Grant/Award 1 txn

Insider Keogh Michael Dennis

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	20,917	$0.00	$0.00

Holdings After Transaction: Common Stock — 20,917 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 August 31, 2026.

Key Figures

Shares granted: 20,917 shares Grant price: $0.00 per share Shares held after transaction: 20,917 shares +2 more

5 metrics

Shares granted 20,917 shares Stock-based award of Common Stock to the CFO on August 31, 2026

Grant price $0.00 per share Stated price for the 20,917-share stock award

Shares held after transaction 20,917 shares Direct Common Stock holdings reported for the CFO following the grant

Vesting period 3 years Restricted stock units vest in equal parts on each anniversary of August 31, 2026

Vesting commencement date August 31, 2026 Date from which annual vesting anniversaries are measured for the RSUs

Key Terms

Restricted stock units, vesting commencement date, Rule 10b5-1

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.

vesting commencement date financial

"on each anniversary of the vesting commencement date of August 31, 2026"

The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.

Rule 10b5-1 regulatory

"document-level checkbox indicates no Rule 10b5-1 plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What insider transaction did Ultra Clean Holdings (UCTT) disclose for its CFO?

Ultra Clean Holdings disclosed that CFO Michael Dennis Keogh received a grant of 20,917 shares of Common Stock as a stock-based award on August 31, 2026, recorded at a stated price of $0.00 per share.

How many shares were granted to the UCTT CFO and at what price?

The CFO was granted 20,917 shares of Ultra Clean Holdings Common Stock at a stated price of $0.00 per share, reflecting a stock-based compensation award rather than a market purchase.

What is the vesting schedule for the restricted stock units reported by UCTT?

The filing states that the restricted stock units vest over 3 years, with equal parts vesting on each anniversary of the vesting commencement date of August 31, 2026.

How many UCTT shares does the CFO hold after this Form 4 transaction?

After the reported grant, CFO Michael Dennis Keogh is shown as directly holding 20,917 shares of Ultra Clean Holdings Common Stock, matching the size of the new award.

Was the UCTT CFO’s equity award made under a Rule 10b5-1 trading plan?

No. The document-level checkbox indicates no Rule 10b5-1 plan for these reported transactions, and there is no footnote stating that the award was made under such a plan.

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

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Available on EDGAR 09/04/2026 - 06:23 PM Accepted by SEC EDGAR 09/04/2026 - 06:23 PM 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^*

Keogh Michael Dennis

(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 Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/31/2026

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	08/31/2026		A		20,917(1)	A	$0	20,917	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 August 31, 2026.

	/s/ Paul Y. Cho, as attorney-in-fact for Michael Keogh	09/04/2026
	** 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)