Summary
Latest filing:
William M. Byerley is Director of Matador Resources Co (MTDR). 1 SEC Form 4 filing on record, dated 15 June 2026.
Recent Transactions
1Every recent SEC Form 4 transaction William M. Byerley has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William M. Byerley 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.
- Joseph Wm Foran - $2.16M of MTDR open-market activity in the last 12 months
- Christopher P. Calvert - $320K of MTDR open-market activity in the last 12 months
- Shelley F. Appel - $287K of MTDR open-market activity in the last 12 months
- Susan M. Ward - $195K of MTDR open-market activity in the last 12 months
- Robert T. Macalik - $98K of MTDR open-market activity in the last 12 months
- Glenn W. Stetson - $82K of MTDR 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 William M. Byerley?
William M. Byerley is a corporate insider, tracked as Director of Matador Resources Co (MTDR). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did William M. Byerley last file a Form 4?
The only primary Form 4 on record is dated 15 June 2026.
Where can I see all of William M. Byerley'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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