QUANTUM CORP /DE/ - QMCO
All tracked SEC files for this issuer. Showing up to 200 latest records.
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Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 25
Latest filed: Jun 08, 2026
| Form | Count |
|---|---|
| 4 | 16 |
| 8-K | 6 |
| SCHEDULE 13D/A | 3 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Jun 08, 2026 | 4 | Jun 01, 2026 | 0001628280-26-041759 | View |
| Jun 08, 2026 | SCHEDULE 13D/A | — | 0000899140-26-000635 | View |
| Jun 08, 2026 | 4 | Jun 04, 2026 | 0000899140-26-000636 | View |
| Jun 05, 2026 | 8-K | Jun 04, 2026 | 0001193125-26-259525 | View |
| Jun 02, 2026 | 8-K | Jun 01, 2026 | 0001193125-26-252718 | View |
| 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 |