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Ultra Clean Holdings, Inc. SEC filings

Ultra Clean Holdings (UCTT) filed its 10-Q for the quarter ended 26 June 2026 on 4 August 2026. Its latest SEC filing, on 30 September 2026, was an 8-K: officer or director change. 24 filings in the last twelve months, each 8-K by what it was about; the 10-K and proxy statement are on the documents page.

In the twelve months since 11 October 2025 Ultra Clean Holdings, Inc. filed 24 documents with the SEC of the kinds listed here: 15 current reports (8-K), about 4 officer or director change; 4 material agreement; 3 other events; 2 results of operations; 2 new financial obligation; 3 quarterly reports (10-Q), 1 employee share plan registration (S-8), 1 conflict minerals report (SD), 1 amended quarterly report (10-Q/A), 1 annual report to shareholders (ARS), 1 proxy statement (DEF 14A). The latest, filed 30 September 2026: 8-K, officer or director change. The 10-K, the 10-Qs and the proxy statement themselves, each with a link to open it, are on the documents page.

FiledFormWhat it was aboutPeriod or event dateFiling
30 September 20268-KOfficer or director change28 September 2026EDGAR
14 August 20268-KMaterial agreement14 August 2026EDGAR
6 August 20268-KOfficer or director change4 August 2026EDGAR
4 August 202610-Qquarterly report26 June 2026EDGAR
3 August 20268-KResults of operations3 August 2026EDGAR
10 July 2026S-8employee share plan registrationEDGAR
8 July 20268-KOfficer or director change2 July 2026EDGAR
26 May 2026SDconflict minerals reportEDGAR
26 May 20268-KShareholder vote22 May 2026EDGAR
1 May 202610-Q/Aamended quarterly report27 March 2026EDGAR
29 April 202610-Qquarterly report27 March 2026EDGAR
28 April 20268-Kcurrent report28 April 2026EDGAR
28 April 20268-Kcurrent report28 April 2026EDGAR
27 April 2026ARSannual report to shareholders26 December 2025EDGAR
27 April 2026DEF 14Aproxy statement22 May 2026EDGAR
24 April 20268-KMaterial agreement, New financial obligation23 April 2026EDGAR
3 March 20268-KMaterial agreement, New financial obligation, Unregistered sale of equity26 February 2026EDGAR
27 February 20268-KMaterial agreement, Other events26 February 2026EDGAR
25 February 20268-KOther events25 February 2026EDGAR
23 February 202610-Kannual report26 December 2025EDGAR
23 February 20268-Kcurrent report23 February 2026EDGAR
28 January 20268-KOfficer or director change25 January 2026EDGAR
29 October 202510-Qquarterly report26 September 2025EDGAR
28 October 20258-KResults of operations, Other events23 October 2025EDGAR
An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened.
Read moreForm 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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