Ultra Clean (UCTT) CIO open-market sale of 4,205 shares disclosed

Rhea-AI Filing Summary

Ultra Clean Holdings, Inc. Chief Information Officer Jeffrey L. McKibben sold 4,205 shares of Common Stock in an open-market transaction at $87.00 per share. Following this sale on May 14, 2026, he directly holds 11,349 shares of Ultra Clean common stock.

Insider Trade Summary

Net Seller: 4,205 shares ($365,835)

Net Sell 1 txn

Insider McKibben Jeffrey L.

Role Chief Information Officer

Sold 4,205 shs ($366K)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,205	$87.00	$366K

Holdings After Transaction: Common Stock — 11,349 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 4,205 shares Sale price per share: $87.00 per share Estimated transaction value: $365,835 +3 more

6 metrics

Shares sold 4,205 shares Open-market sale of Common Stock on May 14, 2026

Sale price per share $87.00 per share Price for the 4,205 sold shares of Common Stock

Estimated transaction value $365,835 4,205 shares sold at $87.00 per share

Shares owned after sale 11,349 shares Direct holdings following the May 14, 2026 transaction

Transaction code S Sale in open market or private transaction

Transaction direction sell Net-sell of 4,205 shares per transaction summary

Key Terms

Common Stock, open-market sale, Sale in open market or private transaction

3 terms

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Sale in open market or private transaction regulatory

"transaction_code_description: Sale in open market or private transaction"

Form 4 Insider Transactions: What Each Field Means →

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 AVENUE

(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)
05/14/2026

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	05/14/2026		S		4,205	D	$87	11,349	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:

	/s/ Paul Y. Cho, as attorney-in-fact for Jeffrey L. McKibben	05/18/2026
	** 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)

FAQ

What insider transaction did Ultra Clean (UCTT) report for Jeffrey L. McKibben?

Ultra Clean reported that Chief Information Officer Jeffrey L. McKibben executed an open-market sale of 4,205 shares of Common Stock at $87.00 per share on May 14, 2026, as disclosed in a Form 4 filing.

How many Ultra Clean (UCTT) shares did Jeffrey L. McKibben sell and at what price?

Jeffrey L. McKibben sold 4,205 shares of Ultra Clean Common Stock at $87.00 per share. The transaction was classified as an open-market sale under transaction code S in the Form 4.

How many Ultra Clean (UCTT) shares does Jeffrey L. McKibben own after this sale?

After the sale, Jeffrey L. McKibben directly owns 11,349 shares of Ultra Clean Common Stock. This post-transaction holding is disclosed in the Form 4 as the total shares following the transaction.

What was the transaction type for Jeffrey L. McKibben’s Ultra Clean (UCTT) trade?

The transaction was an open-market sale of non-derivative Common Stock. It is identified with transaction code S and described as a “Sale in open market or private transaction” in the Form 4 details.

What role does Jeffrey L. McKibben hold at Ultra Clean (UCTT)?

Jeffrey L. McKibben serves as Chief Information Officer at Ultra Clean Holdings, Inc. The Form 4 identifies him as an officer, not a director and not a ten percent owner, when reporting this stock sale.