Summary
Updated Aug 31, 2026
David J. Lubar files SEC Form 4 reports at HALLADOR ENERGY CO (HNRG). 1 SEC Form 4 filing on record, dated 2 June 2026.
Trading Pattern
InsiderAlpha's records for David J. Lubar go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies David J. Lubar files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- David C. Hardie - $9.21M of HNRG open-market activity in the last 12 months
- Charles Ray Wesley IV - $501K of HNRG open-market activity in the last 12 months
- Daniel Timothy Hudson - $339K of HNRG open-market activity in the last 12 months
- Barbara Ann Sugg - $86K of HNRG open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is David J. Lubar?
David J. Lubar is a corporate insider of HALLADOR ENERGY CO (HNRG). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did David J. Lubar last file a Form 4?
The only primary Form 4 on record is dated 2 June 2026.
Where can I see all of David J. Lubar's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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