QUANTUM CORP /DE/ reports

Company location: San Jose, CA
Fiscal year end: 31 March

QUANTUM CORP /DE/ has filed 1,994 SEC EDGAR filings since 28 Jan 1994

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SEC filing history

Showing 1-25 of 1,000 matching filings.

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25

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1

SD File 001-13449

SD

Filing date: 29 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 03 Apr 2026
Reporting date: 01 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4

Filing date: 03 Apr 2026
Reporting date: 01 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4

Filing date: 03 Apr 2026
Reporting date: 01 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 04 Mar 2026
Reporting date: 04 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

424B3 File 333-293560

424B3

Filing date: 24 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

EFFECT File 333-293560

EFFECT filing

Filing date: 23 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 19 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

UPLOAD File 333-293560

UPLOAD filing

Filing date: 19 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-293561

S-8

Filing date: 19 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

S-1 File 333-293560

S-1

Filing date: 19 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-13449

10-Q

Filing date: 17 Feb 2026
Reporting date: 31 Dec 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-13449

8-K

Filing date: 17 Feb 2026
Reporting date: 17 Feb 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

3

FORM 3

Filing date: 09 Feb 2026
Reporting date: 02 Feb 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-13449

8-K

Filing date: 02 Feb 2026
Reporting date: 02 Feb 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-13449

8-K

Filing date: 15 Jan 2026
Reporting date: 15 Jan 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SCHEDULE 13D/A File 005-35818

SCHEDULE 13D/A filing

Filing date: 12 Jan 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

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