Ultra Clean Holdings, Inc.
UCTT- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001275014
In the last 90 days, Ultra Clean Holdings, Inc. insiders filed 0 open-market purchases and 1 sale; 438 institutions reported holding it in 13F filings for Q2 2026, worth $6.50B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of UCTT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ultra Clean Holdings, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 15.00%6.75M shares | – | Apr 30, 20251 filing | Apr 30, 2025 | SEC |
| Shapiro Capital Management LLC | 13G/A | 9.00%4.08M shares | +2.90 ppfrom 6.10% | Feb 14, 20252 filings | May 15, 2025 | SEC |
| Frontier Capital Management Co LLC | 13G | 6.10%2.75M shares | +1.27 ppfrom 4.83% | Jan 16, 20252 filings | Aug 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
8 Schedule 13D and 13G filings on Ultra Clean Holdings, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20259:23 AM ET | Frontier Capital Management Co LLC | 13G | 6.10%2.75M shares | +1.27 ppfrom 4.83% | Jun 30, 2025 | SEC |
| Jul 15, 20254:03 PM ET | Dimensional Fund Advisors LP | 13G/A | 4.70%2.14M shares | −0.30 ppfrom 5.00%Below 5% | Jun 30, 2025 | SEC |
| May 15, 202510:12 AM ET | Shapiro Capital Management LLC | 13G/A | 9.00%4.08M shares | +2.90 ppfrom 6.10% | Mar 31, 2025 | SEC |
| Apr 30, 20251:08 PM ET | BlackRock, Inc. | 13G/A | 15.00%6.75M shares | – | Mar 31, 2025 | SEC |
| Apr 15, 202512:18 PM ET | Dimensional Fund Advisors LP | 13G/A | 5.00%2.26M shares | – | Mar 31, 2025 | SEC |
| Feb 14, 202510:34 AM ET | Shapiro Capital Management LLC | 13G | 6.10%2.75M shares | New | Dec 31, 2024 | SEC |
| Jan 16, 20251:15 PM ET | Frontier Capital Management Co LLC | 13G/A | 4.83%2.18M shares | –Below 5% | Sep 30, 2024 | SEC |
| Nov 13, 202410:15 AM ET | Swedbank Robur Fonder AB | 13G/A | 2.70%1.21M shares | –Below 5% | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ultra Clean Holdings, Inc. shares.
No Form 144 notices for Ultra Clean Holdings, Inc. are on file.