🕵️ Quartzsea Acquisition Corp ($QSEAU)
SEC insider & ownership activity, last 12 months · CIK 2047455 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. One red-flag 8-K in the window: Delisting notice (3.01), Aug 19, 2026.
Insider flow
0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)
No open-market insider transactions in the last 12 months.
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blue JAY Investment LLC | 27.4% | 13D | Mar 19, 2025 | filing ↗ | |
| Karpus Management, Inc. | 9.6% | 13G | Aug 14, 2026 | filing ↗ | |
| W. R. Berkley Corporation | 8.9% | Class A | 13G | Aug 6, 2026 | filing ↗ |
| Berkley Insurance Company | 8.9% | Class A | 13G | Aug 6, 2026 | filing ↗ |
| Mizuho Financial Group, Inc. | 8.0% | 13G | Aug 13, 2026 | filing ↗ | |
| FEIS Equities LLC | 5.3% | 13G | Jun 8, 2026 | filing ↗ | |
| Lawrence M. Feis | 5.3% | 13G | Jun 8, 2026 | filing ↗ | |
| Wolverine Asset Management LLC | 5.1% | 13G | Oct 10, 2025 | filing ↗ | |
| Wolverine Trading Partners, Inc. | 5.1% | 13G | Oct 10, 2025 | filing ↗ | |
| Wolverine Holdings, L.P. | 5.1% | 13G | Oct 10, 2025 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Delisting notice (3.01) | Aug 19, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 23, 2026 | filing ↗ |
| Other events (8.01) | Jun 17, 2026 | filing ↗ |
| Other events (8.01) | Jun 16, 2026 | filing ↗ |
| Other events (8.01) | Jun 16, 2026 | filing ↗ |
| Material agreement (1.01) | May 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Material agreement (1.01) | Mar 17, 2026 | filing ↗ |
| Agreement terminated (1.02) | Mar 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 17, 2026 | filing ↗ |
| Material agreement (1.01) | Mar 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 3, 2026 | filing ↗ |