The Vanguard Group 13D and 13G filings for Hallador Energy Company:
- 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 |
| 2025-07-29 1:00 pm Purchase | 2025-06-30 | 13G | Hallador Energy Company HNRG | The Vanguard Group | 2,235,272 5.200% | 2,235,272 (New Position) | Filing |