Ultra Clean (NASDAQ: UCTT) General Counsel sells 2,000 shares in open-market trade

Rhea-AI Filing Summary

Ultra Clean Holdings, Inc. General Counsel and Secretary Paul Yoonku Cho reported an open-market sale of 2,000 shares of Common Stock. The shares were sold at an average price of $86.8901 per share. After this transaction, he directly holds 15,844 shares of the company’s stock.

Insider Trade Summary

Net Seller: 2,000 shares ($173,780)

Net Sell 1 txn

Insider Cho Paul Yoonku

Role General Counsel and Secretary

Sold 2,000 shs ($174K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,000	$86.8901	$174K

Holdings After Transaction: Common Stock — 15,844 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 2,000 shares Sale price per share: $86.8901 per share Shares held after sale: 15,844 shares +1 more

4 metrics

Shares sold 2,000 shares Open-market sale of Common Stock

Sale price per share $86.8901 per share Average transaction price on Common Stock sale

Shares held after sale 15,844 shares Direct ownership following the transaction

Net shares sold 2,000 shares Net-sell direction in transaction summary

Key Terms

Common Stock, open-market sale, Form 4, net-sell

4 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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

net-sell financial

"netBuySellDirection: "net-sell""

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^*

Cho Paul Yoonku

(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)
	General Counsel and Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

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	05/08/2026		S		2,000	D	$86.8901	15,844	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	05/12/2026
	** 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 UCTT General Counsel Paul Yoonku Cho report?

Paul Yoonku Cho reported an open-market sale of 2,000 UCTT Common Stock shares. The transaction was disclosed on Form 4 and reflects a routine portfolio move rather than a grant, gift, or tax-withholding event by the company.

At what price were the UCTT shares sold in Paul Cho’s Form 4 filing?

The 2,000 UCTT shares were sold at an average price of $86.8901 per share. This price is reported as the transaction price per share in the Form 4, indicating a standard open-market sale by the company’s General Counsel and Secretary.

How many UCTT shares does Paul Cho hold after the reported sale?

Following the sale, Paul Cho directly holds 15,844 shares of UCTT Common Stock. This post-transaction balance is disclosed in the Form 4 and shows his remaining equity stake after selling 2,000 shares in the open market.

Was Paul Cho’s UCTT transaction a buy or sell according to the Form 4?

The Form 4 classifies Paul Cho’s transaction as an open-market sale, coded “S.” It is identified as a sell transaction, not a purchase, with the filing labeling the direction as “sell” and describing it as a sale in the open market or private transaction.

Does Paul Cho’s Form 4 show any UCTT derivative or option exercises?

The filing does not report any derivative or option exercises for Paul Cho. The transaction summary shows zero derivative transactions and zero exercise shares, indicating only a single non-derivative open-market sale of Common Stock in this Form 4.