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: Nov 09, 2026
| Form | Count |
|---|---|
| 4 | 14 |
| 8-K | 10 |
| SCHEDULE 13G | 3 |
| SCHEDULE 13D/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Nov 09, 2026 | 8-K | Nov 09, 2026 | 0001628280-26-072188 | View |
| Oct 09, 2026 | 8-K | Oct 09, 2026 | 0001628280-26-065547 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065000 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065025 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065061 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065068 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065072 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065074 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-065076 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-064983 | View |
| Oct 05, 2026 | 4 | Oct 01, 2026 | 0001628280-26-064989 | View |
| Sep 28, 2026 | 8-K | Sep 28, 2026 | 0001628280-26-063661 | View |
| Sep 17, 2026 | 8-K | Sep 15, 2026 | 0001628280-26-062548 | View |
| Sep 01, 2026 | 8-K | Sep 01, 2026 | 0001628280-26-059879 | View |
| Aug 14, 2026 | SCHEDULE 13G | — | 0001011438-26-000549 | View |
| Aug 14, 2026 | 8-K | Aug 11, 2026 | 0001628280-26-057180 | View |
| Aug 14, 2026 | SCHEDULE 13G | — | 0001172661-26-003795 | View |
| Aug 10, 2026 | 8-K | Aug 10, 2026 | 0001628280-26-055272 | View |
| Aug 10, 2026 | SCHEDULE 13G | — | 0001140361-26-032027 | View |
| Aug 05, 2026 | 4 | Aug 03, 2026 | 0001628280-26-053354 | View |
| Jul 07, 2026 | 4 | Jul 02, 2026 | 0001628280-26-047487 | View |
| Jul 07, 2026 | 4 | Jul 02, 2026 | 0001628280-26-047490 | View |
| Jun 25, 2026 | 8-K | Jun 25, 2026 | 0001628280-26-045529 | View |
| 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 |