Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Brian S. Posner 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.
- Jason P. Rhodes - $124.92M of DYN open-market activity in the last 12 months
- Dirk Kersten - $38.57M of DYN open-market activity in the last 12 months
- John M. Pasquesi - $19.97M of ACGL open-market activity in the last 12 months
- Maamoun Rajeh - $4.56M of ACGL open-market activity in the last 12 months
- Nicolas Papadopoulo - $2.11M of ACGL open-market activity in the last 12 months
- Francois Morin - $1.85M of ACGL 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 Brian S. Posner?
Brian S. Posner is a corporate insider of Dyne Therapeutics, Inc. (DYN). InsiderAlpha holds 13 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Brian S. Posner submitted recently?
3 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Brian S. Posner been buying or selling stock?
Recorded transactions: 8 open-market purchases ($292K) and 3 open-market sales ($145K) across all tracked filings.
How accurate is Brian S. Posner's historical track record?
Across 6 tracked purchases, Brian S. Posner averaged +9.2% avg 30-day return with a 83% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of Brian S. Posner'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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