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Quantum Corp. SEC filings

Quantum filed 29 documents with the SEC in the last twelve months, the latest report being the 10-Q of 11 August 2026. The latest filing, on 9 October 2026, was an 8-K: officer or director change, other events.

Filings in twelve months2914 of them 8-K news
Latest report10-Qfiled 11 Aug 2026
Latest filing8-K9 Oct 2026
Last results, two-day move+61.1%results filed 10 Aug 2026
New to this? How to read this page
  1. Companies file with the SEC when something happens. 10-Q and 10-K are the quarterly and annual reports; 8-K is news that cannot wait for the next report.
  2. An 8-K says which items it covers, such as results, a change at the top or a big contract. A foreign company files a 6-K instead.
  3. The results release is usually an 8-K filed the day results come out, before the 10-Q or 10-K.
  4. Every filing links to the original on EDGAR, the SEC's own site.

Twelve months of filings

by kind

Most of the filings were proxy and other (11). Results came out 6 times.

Each mark is one filing on the day it was filed, in rows by kind. Hover or tap a mark for the form and what it was about.

The share price around each results release

close before to close after

Over the last 6 releases the share price moved 23.2% on average in the two days around results, the most on 10 Aug 2026 (+61.1%).

17 Feb 2026-5.4%$5.78 to $5.47
2 Jun 2026+52.0%$10.49 to $15.95
25 Jun 2026-13.2%$13.42 to $11.65
10 Aug 2026+61.1%$12.04 to $19.40
Daily closeResults filed

Each ring marks a results filing. The move runs from the last close before the filing to the first close after it, so it covers results released before the open or after the close. Hover the line for any day's close.

What the company told investors on 8-K

14 filings

Quantum's 14 news filings (8-K) were mostly about other events (6) and results of operations (6).

  • Other eventsNews the company chose to file
    6 · latest 9 Oct 2026
  • Results of operationsThe quarterly results release
    6 · latest 10 Aug 2026
  • Officer or director changeSomeone joined, left or changed role at the top
    5 · latest 9 Oct 2026
  • Shareholder voteResults of a vote at a shareholder meeting
    2 · latest 17 Sep 2026
  • Material agreementA large contract or deal was signed
    2 · latest 2 Jun 2026
  • New financial obligationNew debt or a borrowing
    2 · latest 2 Jun 2026
  • Unregistered sale of equityShares sold privately
    2 · latest 2 Jun 2026
  • Termination of a material agreementA large contract ended
    1 · latest 5 Jun 2026
  • Shareholder director nominationsShareholders nominated directors
    1 · latest 5 Jun 2026

Each line is one kind of news, with what it means in plain words. Each square is one filing; a filing can carry more than one kind, so the squares can add up to more than the filings. The date opens the latest one on EDGAR.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every filing as a table

    In the last twelve months Quantum Corp. filed 29 documents with the SEC of the kinds listed here: 14 current reports (8-K), about 6 other events; 6 results of operations; 5 officer or director change; 2 shareholder vote; 2 material agreement; 3 quarterly reports (10-Q), 3 additional proxy materials (DEFA14A), 2 employee share plan registrations (S-8), 2 annual report to shareholders (ARS), 2 proxy statements (DEF 14A), 1 annual report (10-K). The latest, filed 9 October 2026: 8-K, officer or director change, other events. 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
    9 October 20268-KOfficer or director change, Other events9 October 2026EDGAR
    28 September 20268-KOfficer or director change, Other events28 September 2026EDGAR
    25 September 2026S-8employee share plan registrationEDGAR
    17 September 20268-KShareholder vote15 September 2026EDGAR
    1 September 20268-KOfficer or director change, Other events1 September 2026EDGAR
    14 August 20268-KOfficer or director change11 August 2026EDGAR
    11 August 202610-Qquarterly report30 June 2026EDGAR
    10 August 20268-KResults of operations10 August 2026EDGAR
    29 July 2026ARSannual report to shareholders31 March 2026EDGAR
    29 July 2026DEFA14Aadditional proxy materialEDGAR
    29 July 2026DEF 14Aproxy statement15 September 2026EDGAR
    25 June 202610-Kannual report31 March 2026EDGAR
    25 June 20268-KResults of operations25 June 2026EDGAR
    15 June 2026NT 10-Klate annual report notice31 March 2026EDGAR
    5 June 20268-KTermination of a material agreement, Shareholder director nominations, Other events4 June 2026EDGAR
    2 June 20268-KMaterial agreement, Results of operations, New financial obligation, Unregistered sale of equity, Other events1 June 2026EDGAR
    29 May 2026SDconflict minerals reportEDGAR
    19 February 2026S-8employee share plan registrationEDGAR
    17 February 202610-Qquarterly report31 December 2025EDGAR
    17 February 20268-KResults of operations17 February 2026EDGAR
    2 February 20268-KOfficer or director change, Other events2 February 2026EDGAR
    15 January 20268-KResults of operations15 January 2026EDGAR
    18 December 20258-KMaterial agreement, New financial obligation, Unregistered sale of equity, Shareholder vote16 December 2025EDGAR
    2 December 2025DEFA14Aadditional proxy materialEDGAR
    13 November 202510-Qquarterly report30 September 2025EDGAR
    13 November 20258-KResults of operations13 November 2025EDGAR
    31 October 2025ARSannual report to shareholders31 March 2025EDGAR
    31 October 2025DEFA14Aadditional proxy materialEDGAR
    31 October 2025DEF 14Aproxy statement16 December 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.