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Ultra Clean officer sells 16,988 common shares

Ultra Clean Holdings' chief accounting officer Brian E. Harding sold 16,988 shares of common stock in open-market transactions.

Filing Impact
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Filing Sentiment

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Form Type
4

Rhea-AI Filing Summary

Ultra Clean Holdings' chief accounting officer Brian E. Harding sold 16,988 shares of common stock in open-market transactions. The trades occurred on June 4, 2026 across 22 separate sales. Reported sale prices ranged from about $85.54 to $91.86 per share, based on weighted-average prices and detailed price ranges disclosed in the footnotes.

Insider HARDING BRIAN E
Role Chief Accounting Officer
Sold 16,988 shs ($1.52M)
Type Security Shares Price Value
Sale Common Stock 196 $85.86 $17K
Sale Common Stock 1,176 $87.72 $103K
Sale Common Stock 1,933 $88.74 $172K
Sale Common Stock 1,407 $89.73 $126K
Sale Common Stock 1,876 $90.79 $170K
Sale Common Stock 636 $91.65 $58K
Sale Common Stock 488 $87.25 $43K
Sale Common Stock 1,199 $88.47 $106K
Sale Common Stock 886 $89.36 $79K
Sale Common Stock 1,277 $90.73 $116K
Sale Common Stock 389 $91.59 $36K
Sale Common Stock 54 $86.00 $5K
Sale Common Stock 226 $87.71 $20K
Sale Common Stock 381 $88.76 $34K
Sale Common Stock 169 $89.67 $15K
Sale Common Stock 375 $90.76 $34K
Sale Common Stock 117 $91.63 $11K
Sale Common Stock 496 $87.22 $43K
Sale Common Stock 1,002 $88.36 $89K
Sale Common Stock 1,056 $89.33 $94K
Sale Common Stock 986 $90.55 $89K
Sale Common Stock 663 $91.38 $61K
Holdings After Transaction: Common Stock — 28,055 shares (Direct)
Footnotes (21)
  1. F1. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $85.5350 to $86.1650. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1).
  2. F2. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.2700 to $88.2550. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2).
  3. F3. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.3400 to $89.1900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (3).
  4. F4. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.3400 to $90.2850. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (4).
  5. F5. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.3400 to $91.1900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (5).
  6. F6. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.5350 to $91.8600. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (6).
  7. F7. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $86.8800 to $87.4000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (7).
  8. F8. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.9900 to $88.9750. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (8).
  9. F9. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.0900 to $89.6400. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (9).
  10. F10. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.2150 to $91.0900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (10).
  11. F11. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.2400 to $91.8200. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (11).
  12. F12. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.3000 to $88.1700. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (12).
  13. F13. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.3650 to $89.2250. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (13).
  14. F14. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.4350 to $90.0900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (14).
  15. F15. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.4400 to $91.1800. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (15).
  16. F16. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.5350 to $91.8200. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (16).
  17. F17. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $86.5900 to $87.5000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (17).
  18. F18. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.7950 to $88.7100. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (18).
  19. F19. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.8200 to $89.7800. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (19).
  20. F20. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.9800 to $90.9000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (20).
  21. F21. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.9900 to $91.8400. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (21).
Shares sold 16,988 shares Total common stock sold by Brian Harding on June 4, 2026
Number of sale transactions 22 trades Count of separate open-market sales coded S in the filing
Lowest price range $85.5350–$86.1650/share Footnote (1) price range for one sale group
Highest price range $90.9900–$91.8400/share Footnote (21) price range for one sale group
Example weighted-average price $91.38/share One reported weighted-average sale price for 663 shares
Common Stock financial
"security_title: "Common Stock" for each non-derivative transaction"
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" for each coded S trade"
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.
non-derivative financial
"transaction_type: "non-derivative" for all reported sales"
weighted average sale price financial
"footnotes describe "This is the weighted average sale price""
Form 4 regulatory
"content metadata indicates SEC form_type "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.

FAQ

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

What insider transaction did UCTT report for Brian Harding?
Ultra Clean’s chief accounting officer Brian Harding reported selling 16,988 shares of common stock. The Form 4 shows 22 open-market sales in a single day, documenting the share counts, sale prices, and weighted-average pricing ranges for each trade.

How many Ultra Clean (UCTT) shares were sold in this Form 4?
The filing reports that 16,988 shares of Ultra Clean common stock were sold. These shares were disposed of in 22 separate open-market transactions, each with its own share amount and weighted-average price disclosed in the transaction table and footnotes.

At what prices did Brian Harding sell UCTT stock?
The reported sales occurred at weighted-average prices generally in the high $80s to low $90s per share. Footnotes state individual trades were executed in ranges from about $85.5350 up to $91.8600 per share across multiple transactions on the same trading day.

Were Brian Harding’s UCTT stock sales open-market transactions?
Yes. Each transaction is coded “S” and described as an open-market or private sale. The data classify them as non-derivative common stock sales, with share amounts, weighted-average sale prices, and post-transaction holdings reported for each entry in the Form 4.

Does the Form 4 show any option exercises or gifts for UCTT?
No. The summarized data show only non-derivative common stock sales coded “S.” The transaction summary lists zero exercises, gifts, tax withholdings, or restructuring entries, and the derivative summary contains no remaining option or other derivative positions in this particular filing.

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

Form 4 Insider Transactions: What Each Field Means →
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Accepted by SEC EDGAR
SEC Form 4
FORM 4UNITED 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).
X
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*
HARDING BRIAN E
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Accounting Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/04/2026S196D$85.86(1)44,847D
Common Stock06/04/2026S1,176D$87.72(2)43,671D
Common Stock06/04/2026S1,933D$88.74(3)41,738D
Common Stock06/04/2026S1,407D$89.73(4)40,331D
Common Stock06/04/2026S1,876D$90.79(5)38,455D
Common Stock06/04/2026S636D$91.65(6)37,819D
Common Stock06/04/2026S488D$87.25(7)37,331D
Common Stock06/04/2026S1,199D$88.47(8)36,132D
Common Stock06/04/2026S886D$89.36(9)35,246D
Common Stock06/04/2026S1,277D$90.73(10)33,969D
Common Stock06/04/2026S389D$91.59(11)33,580D
Common Stock06/04/2026S54D$8633,526D
Common Stock06/04/2026S226D$87.71(12)33,300D
Common Stock06/04/2026S381D$88.76(13)32,919D
Common Stock06/04/2026S169D$89.67(14)32,750D
Common Stock06/04/2026S375D$90.76(15)32,375D
Common Stock06/04/2026S117D$91.63(16)32,258D
Common Stock06/04/2026S496D$87.22(17)31,762D
Common Stock06/04/2026S1,002D$88.36(18)30,760D
Common Stock06/04/2026S1,056D$89.33(19)29,704D
Common Stock06/04/2026S986D$90.55(20)28,718D
Common Stock06/04/2026S663D$91.38(21)28,055D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $85.5350 to $86.1650. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1).
2. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.2700 to $88.2550. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2).
3. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.3400 to $89.1900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (3).
4. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.3400 to $90.2850. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (4).
5. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.3400 to $91.1900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (5).
6. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.5350 to $91.8600. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (6).
7. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $86.8800 to $87.4000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (7).
8. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.9900 to $88.9750. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (8).
9. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.0900 to $89.6400. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (9).
10. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.2150 to $91.0900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (10).
11. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.2400 to $91.8200. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (11).
12. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.3000 to $88.1700. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (12).
13. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.3650 to $89.2250. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (13).
14. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.4350 to $90.0900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (14).
15. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.4400 to $91.1800. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (15).
16. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.5350 to $91.8200. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (16).
17. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $86.5900 to $87.5000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (17).
18. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.7950 to $88.7100. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (18).
19. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.8200 to $89.7800. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (19).
20. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.9800 to $90.9000. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (20).
21. This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.9900 to $91.8400. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (21).
/s/ Paul Y. Cho, as attorney-in-fact for Brian E. Harding06/08/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

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