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NASDAQ · Technology · Holders

Ultra Clean Holdings (UCTT) Institutional Ownership & Insider Trading History

Top UCTT institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.

Section freshness

Prices as of Sep 29, 9:31 AM EDT · Fundamentals checked Sep 29, 8:40 AM EDT · Statements Jun 26, 2026

Ownership read

UCTT insider transaction activity: Mixed, sale-heavy.

Blackrock Inc. is the largest institutional holder. 19 sales and 8 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.

Review insider tradesView institutions

Insider flow

UCTT

Purchases49.60K
Sales181.73K

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

6.92M

Blackrock Inc.

Insider transaction activity

Mixed, sale-heavy

$12.41M sold / $1.49M bought

Observations shown

77

10 holder / 67 insider

Holder rows
10
Yahoo Finance · Filing dates shown per row
Increased / initiated
5
5 decreased · provider-reported changes
Insider rows
67
Yahoo Finance · Filing dates shown per row

Ownership concentration and transaction activity

Top 10 reported holders
53.61% outstanding
Changes with share-count history
Prior-position data unavailable
New / exited positions
0 / 0 explicitly reported
Largest increase with share-count history
Prior share counts unavailable

Reported-holder cohort only; absence from a limited provider list does not establish an exit. Changes are provider-reported and are only comparable quarter over quarter when the position periods match.

Net shares sold: 132,131

Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.

  • Grant: 37
  • Purchase / sale; plan unknown: 27
  • Gift: 3

Top 10 institutional holders

Ultra Clean Holdings (UCTT) institutional ownership

Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.

Ultra Clean Holdings (UCTT) institutional ownership
#Institution% heldSharesChange %Position / filing date
1
Blackrock Inc.
15.4%6.92M+1.28%Position as of Jun 30, 2026Filing date unknown
2
Invesco Ltd.
6.97%3.12M+88.25%Position as of Jun 30, 2026Filing date unknown
3
Vanguard Portfolio Management LLC
6.15%2.76M-1.60%Position as of Jun 30, 2026Filing date unknown
4
Capital World Investors
5.76%2.58M+100.00%Position as of Jun 30, 2026Filing date unknown
5
Vanguard Capital Management LLC
4.26%1.91M-0.39%Position as of Jun 30, 2026Filing date unknown
6
State Street Corporation
4.02%1.80M-1.94%Position as of Jun 30, 2026Filing date unknown
7
Boston Partners
3.03%1.36M-7.40%Position as of Jun 30, 2026Filing date unknown
8
Geode Capital Management, LLC
2.94%1.32M+15.50%Position as of Jun 30, 2026Filing date unknown
9
Driehaus Capital Management, LLC
2.92%1.31M+23.23%Position as of Jun 30, 2026Filing date unknown
10
Dimensional Fund Advisors LP
2.12%949.35K-6.17%Position as of Jun 30, 2026Filing date unknown
Showing 10 of 10 matching institutional rows.

Recent insider transactions

Ultra Clean Holdings (UCTT) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

Ultra Clean Holdings (UCTT) Form 4 insider transactions
#Insider% companyActionSharesTransaction date
1
KEOGH MICHAEL DENNIS
Chief Financial Officer
0.05%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

20.92KAug 31, 2026
2
HARDING BRIAN E
Officer
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

3.84KJul 2, 2026
3
HARDING BRIAN E
Officer
0.02%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

9.36KJun 26, 2026
4
SAVAGE SHERI BRUMM
Chief Financial Officer
0.03%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

15.77KJun 4, 2026
5
SAVAGE SHERI BRUMM
Chief Financial Officer
0.03%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

14.42KJun 4, 2026
6
HARDING BRIAN E
Officer
0.04%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

16.99KJun 4, 2026
7
CHO PAUL YOONKU
General Counsel
<0.01%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

944Jun 2, 2026
8
LIGGETT EMILY M
Director
0.02%SaleOpen-market or direct sale reported on Form 4.
Transaction context
Classification:
Purchase / sale; plan unknown
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

8.20KMay 27, 2026
9
SAVAGE SHERI BRUMM
Chief Financial Officer
0.06%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

26.39KMay 22, 2026
10
HARDING BRIAN E
Officer
0.02%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

8.41KMay 22, 2026
11
CHO PAUL YOONKU
General Counsel
0.02%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

8.04KMay 22, 2026
12
SETO JACQUELINE A
Director
<0.01%Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Transaction context
Classification:
Grant
10b5-1:
Unknown; not supplied by provider
Holdings after:
Not reported
Position sold:
Not calculable
Filed:
Not reported

Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership.

2.58KMay 22, 2026
Showing 12 of 67 matching Form 4 rows. Percent of company uses current shares outstanding.

Frequently asked

Common questions.

Who are the largest UCTT shareholders?

Blackrock Inc. is the largest reported institutional holder of UCTT, with 6.92 million shares, or about 15.44% of shares outstanding.

What does the institutional filing activity show for UCTT?

Ultra Clean Holdings has 10 institutional rows on file: 5 increased or initiated positions and 5 reduced them.

What insider transactions are available for UCTT?

TECHi shows 67 dated UCTT insider transactions through Aug 31, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.

Are UCTT insiders buying or selling?

The displayed UCTT activity reads Mixed, sale-heavy: 19 sales and 8 purchases. Other transaction types remain separate.

Who is the most active reported UCTT insider?

XIAO JINSONG has the largest absolute share movement in the displayed UCTT filing rows, totaling 149,123 shares. The action labels provide the transaction context.

All data sources

Search the dated figures used for this view. Each entry identifies its units, reporting period and calculation status.

How to use this page

Use this to check who owns the float and whether insiders are active.

Best for Institutional concentration, insider transaction pattern, and float context.

Weak when Filings are delayed or transactions are administrative rather than economic.

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