As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Ultra Clean Holdings Inc. The largest reported stake is Invesco Ltd.'s, at 7%. 12 filings are on record since July 15, 2025 (Schedule 13G, August 13, 2026).
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Key facts
- · Reporting person: Invesco Ltd. · Sole voting: 3,088,399 · Shared voting: 0 · Sole dispositive: 3,145,489 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-13
- · Reporting person: Capital World Investors · Sole voting: 2,580,132 · Shared voting: 0 · Sole dispositive: 2,580,132 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-12
- · Reporting person: Vanguard Capital Management · Sole voting: 339,398 · Shared voting: 0 · Sole dispositive: 2,248,424 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-31
- · Holder: Frontier Capital Management Co.,LLC · Percent: 3.93% · SCHEDULE 13G/A
- · Holder: Invesco Ltd. · Percent: 3.7% · SCHEDULE 13G/A
Ultra Clean Holdings Inc has 12 Schedule 13D or 13G filings on record since 2025-07-15. 5 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Invesco Ltd. | 7% | 3,145,489 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| Vanguard Portfolio Management | 6.2% | 2,821,922 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| Frontier Capital Management Co.,LLC | 6.1% | 2,754,163 | SCHEDULE 13G, 2025-08-14 | 2025-06-30 |
| Capital World Investors | 5.8% | 2,580,132 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
| Vanguard Capital Management | 5.01% | 2,248,424 | SCHEDULE 13G, 2026-07-31 | 2026-06-30 |
| Dimensional Fund Advisors LP | 4.7% | 2,139,957 | SCHEDULE 13G/A, 2025-07-15 | 2025-06-30 |
| Frontier Capital Management Co.,LLC | 3.93% | 1,787,451 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Shapiro Capital Management LLC | 2.8% | 1,276,967 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Ultra Clean Holdings Inc and the records around it.
Ultra Clean Holdings Inc elsewhere on the record
- Leadership changes Aug 2026
- Who owns it
Companies that share a holder
- SHAPIRO CAPITAL MANAGEMENT LLC also filed stake reports on 2 other companies: NCR Voyix Corp (Feb 2026), Topgolf Callaway Brands Corp. (Nov 2025)
- FRONTIER CAPITAL MANAGEMENT CO.,LLC also filed stake reports on 4 other companies: INDIE SEMICONDUCTOR, INC. (Aug 2025), Pagaya Technologies Ltd Class A (Aug 2025), Sun Country Airlines Holdings, Inc. (Aug 2025)
- FRONTIER CAPITAL MANAGEMENT CO.,LLC also filed stake reports on 4 other companies: Better Home & Finance Holding Co (Aug 2026), INDIE SEMICONDUCTOR, INC. (Aug 2026), FTAI Infrastructure Inc. (Feb 2026)
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What They Do, And How The Money Works
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Invesco Ltd. | 3,088,399 | 0 | 3,145,489 | 0 | SCHEDULE 13G, 2026-08-13 |
| Capital World Investors | 2,580,132 | 0 | 2,580,132 | 0 | SCHEDULE 13G, 2026-08-12 |
| Vanguard Capital Management | 339,398 | 0 | 2,248,424 | 0 | SCHEDULE 13G, 2026-07-31 |
The latest filing identifies Ultra Clean Holdings Inc by CUSIP 90385V107 and gives its principal executive office as 26462 Corporate Avenue, Hayward (SCHEDULE 13G, 2026-08-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-15 | Dimensional Fund Advisors LP | 4.7% | SCHEDULE 13G/A |
| 2025-08-14 | Frontier Capital Management Co.,LLC | 6.1% | SCHEDULE 13G |
| 2026-02-12 | Invesco Ltd. | 7.5% | SCHEDULE 13G |
| 2026-02-17 | Frontier Capital Management Co.,LLC | 7.73% | SCHEDULE 13G |
| 2026-02-17 | Shapiro Capital Management LLC | 2.8% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 6.2% | SCHEDULE 13G |
| 2026-05-08 | Invesco Ltd. | 3.7% | SCHEDULE 13G/A |
| 2026-05-15 | Frontier Capital Management Co.,LLC | 3.93% | SCHEDULE 13G/A |
| 2026-07-31 | Vanguard Capital Management | 5.01% | SCHEDULE 13G |
| 2026-08-12 | Capital World Investors | 5.8% | SCHEDULE 13G |
| 2026-08-13 | Invesco Ltd. | 7% | SCHEDULE 13G |
Questions about who owns Ultra Clean Holdings Inc
Who owns Ultra Clean Holdings Inc?
On this page, 5 holders' latest ownership filings report 5% or more of Ultra Clean Holdings Inc: Invesco Ltd. (7%, Schedule 13G, filed 2026-08-13), Vanguard Portfolio Management (6.2%, Schedule 13G, filed 2026-04-29), Frontier Capital Management Co.,LLC (6.1%, Schedule 13G, filed 2025-08-14), Capital World Investors (5.8%, Schedule 13G, filed 2026-08-12) and Vanguard Capital Management (5.01%, Schedule 13G, filed 2026-07-31).
Who are the largest shareholders of Ultra Clean Holdings Inc?
By the share each holder's latest filing reports, the largest holders of Ultra Clean Holdings Inc on this page are Invesco Ltd. (7%), Vanguard Portfolio Management (6.2%) and Frontier Capital Management Co.,LLC (6.1%).
When did Invesco Ltd. buy into Ultra Clean Holdings Inc?
The filings give report dates, not purchase dates. The earliest filing from Invesco Ltd. on this page is the Schedule 13G, filed 2026-02-12, reporting 7.5%; its latest, Schedule 13G filed 2026-08-13, reports 7%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Ultra Clean Holdings Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| September 30, 2026 | Leadership change: Alexander Davern appointed, Director | — | Leadership changes | Source |
| August 6, 2026 | Leadership change: Sheri Savage departs, Chief Financial Officer | — | Leadership changes | Source |
| July 8, 2026 | Leadership change: Michael Keogh appointed, Chief Financial Officer | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.