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
424B5 Prospectus supplement Aug 14, 2026 —
S-8 Employee stock plan registration Jul 10, 2026 —
S-3ASR Automatic shelf registration Mar 25, 2024 —
S-8 Employee stock plan registration Mar 20, 2024 —
424B5 Prospectus supplement Apr 9, 2021 —
424B5 Prospectus supplement Apr 5, 2021 —
S-3ASR Automatic shelf registration Apr 5, 2021 —
S-8 Employee stock plan registration Dec 18, 2019 —
424B5 Prospectus supplement Jan 31, 2018 —
424B5 Prospectus supplement Jan 29, 2018 —
S-3ASR Automatic shelf registration Jan 5, 2018 —
S-8 Employee stock plan registration Jul 25, 2017 —
POS AM Form pos am Feb 25, 2016 —
424B3 Prospectus Mar 5, 2015 —
S-3 Shelf registration Feb 20, 2015 —
POS AM Form pos am Aug 26, 2014 —

Showing 16 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.