Ultra Clean Holdings, Inc. SEC filings UCTT
Ultra Clean Holdings, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Apr 25, 2014. Its latest annual report, Form ARS, was filed on Apr 27, 2026 for the period ended Dec 26, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 25, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (results of operations). The company's fiscal year ends on December 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Oct 27, 2026 | Oct 27, 2026 |
| 8-K |
Current report
Officer or director change
|
Sep 30, 2026 | Sep 28, 2026 |
| 8-K |
Current report
Material agreement
|
Aug 14, 2026 | Aug 14, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 6, 2026 | Aug 4, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2026 | Aug 3, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 8, 2026 | Jul 2, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 26, 2026 | May 22, 2026 |
| 8-K | Current report | Apr 28, 2026 | Apr 28, 2026 |
| 8-K | Current report | Apr 28, 2026 | Apr 28, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 24, 2026 | Apr 23, 2026 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Mar 3, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Feb 27, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Other events
|
Feb 25, 2026 | Feb 25, 2026 |
| 8-K | Current report | Feb 23, 2026 | Feb 23, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 28, 2026 | Jan 25, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 28, 2025 | Oct 23, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 16, 2025 | Sep 15, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 7, 2025 | Aug 4, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2025 | Jul 28, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 30, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 27, 2025 | May 21, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2025 | Apr 28, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2025 | Mar 5, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2025 | Feb 24, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 31, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2024 | Oct 28, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 10, 2024 | Oct 8, 2024 |
| 8-K | Current report | Jul 25, 2024 | Jul 25, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 28, 2024 | May 22, 2024 |
| 8-K |
Current report
Officer or director change
|
May 15, 2024 | May 14, 2024 |
| 8-K | Current report | May 6, 2024 | May 6, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 9, 2024 | Apr 4, 2024 |
| 8-K |
Current report
Auditor change
|
Mar 8, 2024 | Mar 6, 2024 |
| 8-K | Current report | Feb 21, 2024 | Feb 21, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 1, 2023 | Oct 30, 2023 |
| 8-K | Current report | Oct 31, 2023 | Oct 25, 2023 |
| 8-K | Current report | Oct 25, 2023 | Oct 25, 2023 |
| 8-K | Current report | Oct 23, 2023 | Oct 23, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 1, 2023 | Jul 31, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 27, 2023 | Jul 27, 2023 |
| 8-K |
Current report
Material agreement
|
Jul 6, 2023 | Jul 6, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 18, 2023 | May 17, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2023 | Apr 26, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2023 | Feb 22, 2023 |
| 8-K |
Current report
Other events
|
Jan 9, 2023 | Jan 9, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 26, 2022 | Oct 20, 2022 |
| 8-K |
Current report
Officer or director change
|
Oct 13, 2022 | Oct 10, 2022 |
| 8-K/A |
Amended current report
Material agreement, New debt
|
Aug 29, 2022 | Aug 19, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 24, 2022 | Aug 19, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2022 | Jul 28, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 27, 2022 | Jun 23, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2022 | May 19, 2022 |
| 8-K |
Current report
Officer or director change
|
May 18, 2022 | May 16, 2022 |
| 8-K |
Current report
Officer or director change
|
May 4, 2022 | Apr 29, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 27, 2022 | Apr 27, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 25, 2022 | Apr 22, 2022 |
| 8-K |
Current report
Other events
|
Apr 11, 2022 | Apr 11, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 23, 2022 | Feb 23, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2021 | Oct 27, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2021 | Aug 2, 2021 |
| 8-K/A | Amended current report | Jun 14, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2021 | May 20, 2021 |
| 8-K |
Current report
Other events
|
May 3, 2021 | May 3, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 28, 2021 | Apr 22, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Material agreement
|
Apr 13, 2021 | Apr 8, 2021 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Other events
|
Apr 5, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 22, 2021 | Feb 22, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2021 | Feb 17, 2021 |
| 8-K |
Current report
Material agreement, Results of operations, Other events
|
Dec 17, 2020 | Dec 16, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2020 | Oct 28, 2020 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2020 | Jul 29, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jun 3, 2020 | Jun 2, 2020 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2020 | Apr 29, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2020 | Feb 19, 2020 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2019 | Dec 17, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2019 | Oct 30, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2019 | Jul 31, 2019 |
| 8-K |
Current report
Officer or director change
|
Jun 5, 2019 | May 30, 2019 |
| 8-K |
Current report
Officer or director change
|
May 29, 2019 | May 28, 2019 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 24, 2019 | May 23, 2019 |
| 8-K |
Current report
Results of operations
|
May 2, 2019 | May 2, 2019 |
| 8-K |
Current report
Officer or director change, Other events
|
Mar 28, 2019 | Mar 25, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2019 | Feb 21, 2019 |
| 8-K/A | Amended current report | Nov 6, 2018 | Aug 27, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2018 | Nov 6, 2018 |
| 8-K |
Current report
Officer or director change
|
Nov 1, 2018 | Oct 26, 2018 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Oct 4, 2018 | Oct 1, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 5, 2018 | Sep 5, 2018 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Other events
|
Aug 31, 2018 | Aug 27, 2018 |
| 8-K |
Current report
Results of operations
|
Jul 26, 2018 | Jul 26, 2018 |
| 8-K |
Current report
Material agreement, Other events
|
Jul 25, 2018 | Jul 24, 2018 |
| 8-K |
Current report
Officer or director change
|
Jun 6, 2018 | Jun 1, 2018 |
| 8-K |
Current report
Officer or director change
|
Jun 1, 2018 | Jun 1, 2018 |
| 8-K |
Current report
Shareholder vote results
|
May 17, 2018 | May 15, 2018 |
| 8-K |
Current report
Results of operations
|
Apr 25, 2018 | Apr 25, 2018 |
| 8-K |
Current report
Officer or director change
|
Apr 2, 2018 | Mar 29, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2018 | Feb 21, 2018 |
| 8-K |
Current report
Officer or director change
|
Feb 12, 2018 | Feb 6, 2018 |
| 8-K |
Current report
Material agreement
|
Feb 2, 2018 | Jan 30, 2018 |
| 8-K |
Current report
Other events
|
Jan 29, 2018 | Jan 29, 2018 |
| 8-K |
Current report
Results of operations
|
Jan 16, 2018 | Jan 16, 2018 |
| 8-K |
Current report
Officer or director change
|
Nov 15, 2017 | Nov 13, 2017 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2017 | Oct 25, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 2, 2017 | Oct 2, 2017 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Jul 27, 2017 | Jul 27, 2017 |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2017 | May 24, 2017 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2017 | Feb 26, 2017 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2017 | Feb 22, 2017 |
| 8-K |
Current report
Officer or director change
|
Feb 17, 2017 | Feb 15, 2017 |
| 8-K |
Current report
Results of operations
|
Jan 9, 2017 | Jan 9, 2017 |
| 8-K |
Current report
Results of operations
|
Oct 26, 2016 | Oct 26, 2016 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2016 | Jul 28, 2016 |
| 8-K |
Current report
Officer or director change
|
Jul 12, 2016 | Jul 7, 2016 |
| 8-K |
Current report
Results of operations
|
Jul 8, 2016 | Jul 8, 2016 |
| 8-K |
Current report
Shareholder vote results
|
Jun 1, 2016 | May 26, 2016 |
| 8-K |
Current report
Results of operations
|
Apr 21, 2016 | Apr 21, 2016 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Mar 1, 2016 | Feb 26, 2016 |
| 8-K |
Current report
Officer or director change
|
Feb 24, 2016 | Feb 18, 2016 |
| 8-K |
Current report
Results of operations
|
Feb 23, 2016 | Feb 23, 2016 |
| 8-K |
Current report
Results of operations
|
Jan 15, 2016 | Jan 11, 2016 |
| 8-K |
Current report
Material agreement
|
Dec 29, 2015 | Dec 24, 2015 |
| 8-K/A | Amended current report | Oct 27, 2015 | Jul 31, 2015 |
| 8-K |
Current report
Results of operations
|
Oct 22, 2015 | Oct 22, 2015 |
| 8-K/A | Amended current report | Oct 16, 2015 | Jul 31, 2015 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Unregistered share sale, Other events
|
Aug 3, 2015 | Jul 28, 2015 |
| 8-K |
Current report
Officer or director change
|
Jul 29, 2015 | Jul 27, 2015 |
| 8-K |
Current report
Results of operations
|
Jul 22, 2015 | Jul 22, 2015 |
| 8-K |
Current report
Officer or director change
|
Jun 24, 2015 | Jun 3, 2015 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2015 | Jun 4, 2015 |
| 8-K |
Current report
Results of operations
|
Apr 20, 2015 | Apr 20, 2015 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Apr 15, 2015 | Feb 2, 2015 |
| 8-K |
Current report
Auditor change
|
Apr 3, 2015 | Mar 30, 2015 |
| 8-K |
Current report
Officer or director change
|
Mar 26, 2015 | Mar 25, 2015 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2015 | Feb 17, 2015 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Unregistered share sale, Other events
|
Feb 6, 2015 | Feb 2, 2015 |
| 8-K |
Current report
Officer or director change
|
Jan 5, 2015 | Jan 2, 2015 |
| 8-K |
Current report
Results of operations
|
Oct 20, 2014 | Oct 20, 2014 |
| 8-K |
Current report
Results of operations
|
Jul 21, 2014 | Jul 21, 2014 |
| 8-K |
Current report
Shareholder vote results
|
May 23, 2014 | May 21, 2014 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2014 | Apr 28, 2014 |
Showing 141 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- UCTT (Nasdaq)
- Fiscal year ends
- December 30
- Incorporated in
- DE
- Headquarters
- Hayward, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1275014
- Former names
- ULTRA CLEAN HOLDINGS INC (until Feb 17, 2015)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.