QUANTUM CORP /DE/ - QMCO
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 28
Latest filed: Apr 03, 2026
| Form | Count |
|---|---|
| 4 | 17 |
| 8-K | 8 |
| SCHEDULE 13D/A | 2 |
| SCHEDULE 13D | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Apr 03, 2026 | 4 | Apr 01, 2026 | 0001193125-26-142179 | View |
| Apr 03, 2026 | 4 | Apr 01, 2026 | 0001193125-26-142182 | View |
| Apr 03, 2026 | 4 | Apr 01, 2026 | 0001628280-26-023655 | View |
| Mar 04, 2026 | 4 | Mar 04, 2026 | 0001628280-26-014606 | View |
| Feb 17, 2026 | 8-K | Feb 17, 2026 | 0001628280-26-008553 | View |
| Feb 02, 2026 | 8-K | Feb 02, 2026 | 0001628280-26-004461 | View |
| Jan 15, 2026 | 8-K | Jan 15, 2026 | 0001628280-26-002121 | View |
| Jan 12, 2026 | SCHEDULE 13D/A | — | 0000947871-26-000026 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000741 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000742 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000745 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000747 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000748 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000749 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000750 | View |
| Jan 05, 2026 | 4 | Jan 01, 2026 | 0001628280-26-000753 | View |
| Dec 29, 2025 | 4 | Sep 23, 2025 | 0000709283-25-000099 | View |
| Dec 23, 2025 | 4 | Dec 18, 2025 | 0000947871-25-001091 | View |
| Dec 22, 2025 | SCHEDULE 13D/A | — | 0000947871-25-001089 | View |
| Dec 18, 2025 | 8-K | Dec 16, 2025 | 0000709283-25-000091 | View |
| Nov 13, 2025 | 8-K | Nov 13, 2025 | 0000709283-25-000083 | View |
| Nov 04, 2025 | 4 | Nov 01, 2025 | 0001419111-25-000003 | View |
| Nov 04, 2025 | 4 | Nov 01, 2025 | 0002085977-25-000004 | View |
| Nov 04, 2025 | 4 | Nov 01, 2025 | 0002085976-25-000005 | View |
| Oct 28, 2025 | 8-K | Oct 28, 2025 | 0000709283-25-000072 | View |
| Oct 20, 2025 | 8-K | Oct 20, 2025 | 0000709283-25-000063 | View |
| Oct 10, 2025 | SCHEDULE 13D | — | 0000947871-25-000896 | View |
| Oct 06, 2025 | 8-K | Sep 30, 2025 | 0000709283-25-000061 | View |