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ON Semiconductor Corp. SEC filings

In the twelve months since 23 September 2025 ON Semiconductor Corp. filed 23 documents with the SEC of the kinds listed here: 14 current reports (8-K), about 5 other events; 4 results of operations; 3 material agreement; 3 officer or director change; 1 shareholder vote; 3 quarterly reports (10-Q), 1 merger registration (S-4), 1 conflict minerals report (SD), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A). The latest, filed 21 August 2026: S-4, merger registration.

FiledFormWhat it was aboutPeriod or event dateFiling
21 August 2026S-4merger registrationEDGAR
13 August 20268-KOther events12 August 2026EDGAR
3 August 20268-KResults of operations3 August 2026EDGAR
3 August 202610-Qquarterly report3 July 2026EDGAR
25 June 20268-KMaterial agreement, Other events25 June 2026EDGAR
18 May 2026SDconflict minerals reportEDGAR
18 May 20268-KOfficer or director change, Shareholder vote14 May 2026EDGAR
12 May 20268-KMaterial agreement, New financial obligation, Unregistered sale of equity, Other events6 May 2026EDGAR
7 May 20268-KOther events6 May 2026EDGAR
6 May 20268-KOther events6 May 2026EDGAR
4 May 20268-KResults of operations4 May 2026EDGAR
4 May 202610-Qquarterly report3 April 2026EDGAR
2 April 2026ARSannual report to shareholders31 December 2025EDGAR
2 April 2026DEFA14Aadditional proxy materialEDGAR
2 April 2026DEF 14Aproxy statement14 May 2026EDGAR
11 March 20268-KOfficer or director change9 March 2026EDGAR
9 February 20268-KResults of operations9 February 2026EDGAR
9 February 202610-Kannual report31 December 2025EDGAR
17 November 20258-KMaterial impairment13 November 2025EDGAR
5 November 20258-KOfficer or director change4 November 2025EDGAR
3 November 20258-KResults of operations3 November 2025EDGAR
3 November 202510-Qquarterly report3 October 2025EDGAR
23 September 20258-KMaterial agreement, Regulation FD disclosure23 September 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. Form 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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