Blackrock Inc.
Rank #1
15.4%
- Shares
- 6.92M
- Change %
- +1.28%
- Filing
- Jun 30, 2026
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
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 15, 4:00 PM EDT · Fundamentals checked Sep 16, 6:07 AM EDT
Ownership read
UCTT insider sentiment: 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.
Insider flow
UCTT
Purchases49.60K
Sales181.73K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
6.92M
Blackrock Inc.
Insider stance
Mixed, sale-heavy
$12.41M sold / $1.49M bought
Latest filing
Aug 31, 2026
Most recent holder or insider filing date
Filings shown
97
30 holder / 67 insider
- Holder rows
- 30
- Market data source
- Latest filing
- Aug 31, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 13
- 7 decreased
- Insider rows
- 67
- Market data source
Top 30 institutional holders
Ultra Clean Holdings (UCTT) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.
Invesco Ltd.
Rank #2
6.97%
- Shares
- 3.12M
- Change %
- +88.25%
- Filing
- Jun 30, 2026
Increased
Vanguard Portfolio Management LLC
Rank #3
6.15%
- Shares
- 2.76M
- Change %
- -1.60%
- Filing
- Jun 30, 2026
Decreased
Capital World Investors
Rank #4
5.76%
- Shares
- 2.58M
- Change %
- +100.00%
- Filing
- Jun 30, 2026
Increased
Vanguard Capital Management LLC
Rank #5
4.26%
- Shares
- 1.91M
- Change %
- -0.39%
- Filing
- Jun 30, 2026
Decreased
State Street Corporation
Rank #6
4.02%
- Shares
- 1.80M
- Change %
- -1.94%
- Filing
- Jun 30, 2026
Decreased
Boston Partners
Rank #7
3.03%
- Shares
- 1.36M
- Change %
- -7.40%
- Filing
- Jun 30, 2026
Decreased
Geode Capital Management, LLC
Rank #8
2.94%
- Shares
- 1.32M
- Change %
- +15.50%
- Filing
- Jun 30, 2026
Increased
Driehaus Capital Management, LLC
Rank #9
2.92%
- Shares
- 1.31M
- Change %
- +23.23%
- Filing
- Jun 30, 2026
Increased
Dimensional Fund Advisors LP
Rank #10
2.12%
- Shares
- 949.35K
- Change %
- -6.17%
- Filing
- Jun 30, 2026
Decreased
iShares Trust-iShares Core S&P Small-Cap ETF
Rank #11
6.09%
- Shares
- 2.73M
- Change %
- +1.08%
- Filing
- Jul 31, 2026
Increased
SmallCap World Fund Inc
Rank #12
5.31%
- Shares
- 2.38M
- Change %
- +100.00%
- Filing
- Jun 30, 2026
Increased
AIM Sector Funds (Invesco Sector Funds)-Invesco Small Cap Value Fund
Rank #13
3.20%
- Shares
- 1.43M
- Change %
- -28.97%
- Filing
- Apr 30, 2026
Decreased
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund
Rank #14
3.01%
- Shares
- 1.35M
- Change %
- -1.02%
- Filing
- Jun 30, 2026
Decreased
iShares Trust-iShares Russell 2000 ETF
Rank #15
2.58%
- Shares
- 1.15M
- Change %
- +8.27%
- Filing
- Jun 30, 2026
Increased
VANGUARD WORLD FUND-Vanguard Information Technology Index Fund
Rank #16
2.53%
- Shares
- 1.14M
- Change %
- +0.35%
- Filing
- May 31, 2026
Increased
Invesco Exchange-Traded Fund Trust-Invesco Semiconductors ETF
Rank #17
1.94%
- Shares
- 869.55K
- Change %
- +4.08%
- Filing
- Jul 31, 2026
Increased
OBERWEIS FUNDS-Oberweis Micro-Cap Fund
Rank #18
1.39%
- Shares
- 621.30K
- Change %
- +1.30%
- Filing
- Jun 30, 2026
Increased
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund
Rank #19
1.15%
- Shares
- 513.91K
- Change %
- +1.41%
- Filing
- Jun 30, 2026
Increased
Fidelity Salem Street Trust-Fidelity Small Cap Index Fund
Rank #20
1.09%
- Shares
- 487.75K
- Change %
- +9.81%
- Filing
- Jun 30, 2026
Increased
| # | Institution | % held | Shares | Filing date |
|---|---|---|---|---|
| 1 | 15.4% | 6.92M | Jun 30, 2026 | |
| 2 | 6.97% | 3.12M | Jun 30, 2026 | |
| 3 | 6.15% | 2.76M | Jun 30, 2026 | |
| 4 | 5.76% | 2.58M | Jun 30, 2026 | |
| 5 | 4.26% | 1.91M | Jun 30, 2026 | |
| 6 | 4.02% | 1.80M | Jun 30, 2026 | |
| 7 | Boston Partners | 3.03% | 1.36M | Jun 30, 2026 |
| 8 | 2.94% | 1.32M | Jun 30, 2026 | |
| 9 | Driehaus Capital Management, LLC | 2.92% | 1.31M | Jun 30, 2026 |
| 10 | 2.12% | 949.35K | Jun 30, 2026 | |
| 11 | iShares Trust-iShares Core S&P Small-Cap ETF | 6.09% | 2.73M | Jul 31, 2026 |
| 12 | SmallCap World Fund Inc | 5.31% | 2.38M | Jun 30, 2026 |
| 13 | 3.20% | 1.43M | Apr 30, 2026 | |
| 14 | 3.01% | 1.35M | Jun 30, 2026 | |
| 15 | iShares Trust-iShares Russell 2000 ETF | 2.58% | 1.15M | Jun 30, 2026 |
| 16 | 2.53% | 1.14M | May 31, 2026 | |
| 17 | 1.94% | 869.55K | Jul 31, 2026 | |
| 18 | OBERWEIS FUNDS-Oberweis Micro-Cap Fund | 1.39% | 621.30K | Jun 30, 2026 |
| 19 | 1.15% | 513.91K | Jun 30, 2026 | |
| 20 | 1.09% | 487.75K | Jun 30, 2026 |
Showing 20 of 30 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.
KEOGH MICHAEL DENNIS
Chief Financial Officer
- Shares
- 20.92K
- % company
- 0.05%
Filed Aug 31, 2026
HARDING BRIAN E
Officer
- Shares
- 3.84K
- % company
- <0.01%
- Price
- $108.82
- Value
- $417,539
Filed Jul 2, 2026
HARDING BRIAN E
Officer
- Shares
- 9.36K
- % company
- 0.02%
Filed Jun 26, 2026
SAVAGE SHERI BRUMM
Chief Financial Officer
- Shares
- 15.77K
- % company
- 0.03%
- Price
- $89.47
- Value
- $1,410,556
Filed Jun 4, 2026
SAVAGE SHERI BRUMM
Chief Financial Officer
- Shares
- 14.42K
- % company
- 0.03%
- Price
- $89.45
- Value
- $1,289,915
Filed Jun 4, 2026
HARDING BRIAN E
Officer
- Shares
- 16.99K
- % company
- 0.04%
- Price
- $89.47
- Value
- $1,519,892
Filed Jun 4, 2026
CHO PAUL YOONKU
General Counsel
- Shares
- 944
- % company
- <0.01%
- Price
- $89.37
- Value
- $84,365
Filed Jun 2, 2026
LIGGETT EMILY M
Director
- Shares
- 8.20K
- % company
- 0.02%
- Price
- $92.18
- Value
- $755,692
Filed May 27, 2026
SAVAGE SHERI BRUMM
Chief Financial Officer
- Shares
- 26.39K
- % company
- 0.06%
Filed May 22, 2026
HARDING BRIAN E
Officer
- Shares
- 8.41K
- % company
- 0.02%
Filed May 22, 2026
SOLOMON JOANNE
Director
- Shares
- 2.58K
- % company
- <0.01%
Filed May 22, 2026
EDMAN THOMAS T
Director
- Shares
- 2.58K
- % company
- <0.01%
Filed May 22, 2026
| # | Insider | % company | Action | Shares | Filing 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. | 20.92K | Aug 31, 2026 |
| 2 | HARDING BRIAN E Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 3.84K | Jul 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. | 9.36K | Jun 26, 2026 |
| 4 | SAVAGE SHERI BRUMM Chief Financial Officer | 0.03% | SaleOpen-market or direct sale reported on Form 4. | 15.77K | Jun 4, 2026 |
| 5 | SAVAGE SHERI BRUMM Chief Financial Officer | 0.03% | SaleOpen-market or direct sale reported on Form 4. | 14.42K | Jun 4, 2026 |
| 6 | HARDING BRIAN E Officer | 0.04% | SaleOpen-market or direct sale reported on Form 4. | 16.99K | Jun 4, 2026 |
| 7 | CHO PAUL YOONKU General Counsel | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 944 | Jun 2, 2026 |
| 8 | LIGGETT EMILY M Director | 0.02% | SaleOpen-market or direct sale reported on Form 4. | 8.20K | May 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. | 26.39K | May 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. | 8.41K | May 22, 2026 |
| 11 | SOLOMON JOANNE Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 2.58K | May 22, 2026 |
| 12 | EDMAN THOMAS T Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 2.58K | May 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 30 institutional rows on file: 13 increased or initiated positions and 7 reduced them as of Jul 31, 2026.
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.