🕵️ Quantum Corp /DE/ ($QMCO)
SEC insider & ownership activity, last 12 months · CIK 709283 · every row links its SEC filing
Over the last 12 months insiders sold $127K with no open-market buying against it. Meyrath Hugues sold $98K in discretionary trades (Oct–Jul). Dialectic Technology SPV LLC trimmed 41.3% → 40.0%; John Fichthorn trimmed 41.4% → 40.0%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 3 sellers, $127K (8 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Meyrath Hugues | 0 | – | 2 | $98K | Jul 2, 2026 |
| Craythorne Anthony | 0 | – | 1 | $16K | Aug 3, 2026 |
| Laura A. Nash | 0 | – | 5 | $13K | Jul 2, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Dialectic Technology SPV LLC | 40.0% | 13D | Jun 4, 2026 | filing ↗ | |
| John Fichthorn | 40.0% | 13D | Jun 4, 2026 | filing ↗ | |
| Dialectic Technology Manager LLC | 40.0% | 13D | Jun 4, 2026 | filing ↗ | |
| Alyeska Investment Group, L.P. | 6.7% | 13G | Aug 14, 2026 | filing ↗ | |
| Alyeska Fund GP, LLC | 6.7% | 13G | Aug 14, 2026 | filing ↗ | |
| Anand Parekh | 6.7% | 13G | Aug 14, 2026 | filing ↗ | |
| Two SEAS Capital LP | 6.3% | 13G | Aug 14, 2026 | filing ↗ | |
| Two SEAS Capital GP LLC | 6.3% | 13G | Aug 14, 2026 | filing ↗ | |
| Sina Toussi | 6.3% | 13G | Aug 14, 2026 | filing ↗ | |
| Oaktree Capital Management LP | 5.1% | 13G | Aug 10, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 1, 2026 | filing ↗ |
| Other events (8.01) | Sep 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 1, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 11, 2026 | filing ↗ |
| Earnings (2.02) | Aug 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 10, 2026 | filing ↗ |
| Earnings (2.02) | Jun 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 25, 2026 | filing ↗ |
| Agreement terminated (1.02) | Jun 4, 2026 | filing ↗ |
| Shareholder Nominations Pursuant to Exchange Act Rule 14a-11 (5.08) | Jun 4, 2026 | filing ↗ |
| Other events (8.01) | Jun 4, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 1, 2026 | filing ↗ |
| Earnings (2.02) | Jun 1, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 1, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jun 1, 2026 | filing ↗ |
| Other events (8.01) | Jun 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 1, 2026 | filing ↗ |
| Earnings (2.02) | Feb 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 17, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 2, 2026 | filing ↗ |
| Other events (8.01) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Jan 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 15, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 16, 2025 | filing ↗ |
| New financial obligation (2.03) | Dec 16, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Dec 16, 2025 | filing ↗ |
| Shareholder vote (5.07) | Dec 16, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 16, 2025 | filing ↗ |
| Earnings (2.02) | Nov 13, 2025 | filing ↗ |