🕵️ Silverbox Corp IV ($SBXD-WT)
SEC insider & ownership activity, last 12 months · CIK 2015947 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. Barclays PLC added 4.7% → 7.0%. No red-flag 8-Ks in the window.
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 | |
|---|---|---|---|---|---|
| Silverbox Sponsor IV LLC | 21.4% | 13G | Feb 13, 2025 | filing ↗ | |
| Boxwood Holdings III LLC | 21.4% | 13G | Feb 13, 2025 | filing ↗ | |
| Stephen K. Kadenacy | 21.4% | 13G | Feb 13, 2025 | filing ↗ | |
| Joseph E. Reece | 21.4% | 13G | Feb 13, 2025 | filing ↗ | |
| Mizuho Financial Group, Inc. | 8.0% | 13G | Feb 12, 2026 | filing ↗ | |
| W. R. Berkley Corporation | 7.4% | 13G | May 8, 2026 | filing ↗ | |
| Berkley Insurance Company | 7.4% | 13G | May 8, 2026 | filing ↗ | |
| Polar Asset Management Partners Inc. | 7.2% | 13G | Aug 14, 2025 | filing ↗ | |
| Barclays PLC | 7.0% | 13G | May 14, 2026 | filing ↗ | |
| AQR Capital Management, LLC | 6.6% | 13G | Aug 14, 2025 | filing ↗ | |
| AQR Capital Management Holdings, LLC | 6.6% | 13G | Aug 14, 2025 | filing ↗ | |
| AQR Arbitrage, LLC | 6.6% | 13G | Aug 14, 2025 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Material agreement (1.01) | May 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 1, 2026 | filing ↗ |
| Other events (8.01) | Dec 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 4, 2025 | filing ↗ |
| Material agreement (1.01) | Oct 31, 2025 | filing ↗ |
| Other events (8.01) | Sep 3, 2025 | filing ↗ |
| Material agreement (1.01) | Aug 6, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |
| Material agreement (1.01) | Aug 6, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Aug 6, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |