Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Thomas M. O'Brien 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.
- Kendall Larsen - $396K in VHC purchases and sales in the last 12 months
- Gary Feiner - $126K in VHC purchases and sales in the last 12 months
- Michael F. Angelo - $23K in VHC purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Thomas M. O'Brien?
Thomas M. O'Brien is a corporate insider of VirnetX Holding Corp (VHC). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Thomas M. O'Brien last file a Form 4?
The most recent primary Form 4 on record is dated 25 June 2026, one of 3 filings going back to 2025.
