W. R. Berkley Corporation 13D and 13G filings for SilverBox Corp IV:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-08 4:07 pm Purchase | 2026-03-31 | 13G | SILVERBOX CORP IV SBXD | BERKLEY W R CORP WRB | 1,514,573 7.400% | 302,899 (+25.00%) | Filing |
| 2026-02-11 4:19 pm Purchase | 2025-12-31 | 13G | SILVERBOX CORP IV SBXD | BERKLEY W R CORP WRB | 1,211,674 5.900% | 1,211,674 (New Position) | Filing |