InsidersTradesSigma
Total declarations
Company
▲ Purchases (1 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
1
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Discover the complete record of transactions filed by O'Brien Thomas M, Director. Officer active across 1 company, notably VirnetX Holding Corp. In total, 8 reports have been published. Breakdown: 1 buy · 0 sell. Total volume traded: €19k. Activity tracked since 3 June 2021. The latest transaction was disclosed on 3 December 2025 (Levée d'options). Regulator: SEC (Form 4). All data is free.
Companies and markets linked to O'Brien Thomas M
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations8 total
7,500 sharesCommon StockSEC:0001241556-26-000005:0
625 shares@ US$10.10421.8% of flowCommon StockSEC:0001241556-25-000004:0
7,500 shares0Common StockSEC:0001415889-25-017377:0
7,500 shares0Common StockSEC:0001415889-24-017416:0
8,333 shares0Common StockSEC:0001209191-23-038589:0
50,000 shares@ US$0.42100.0% of flowCommon StockSEC:0001209191-23-030968:0
Canonical exit: 16 Aug 2023 (T+90)
8,333 shares0Common StockSEC:0001209191-22-036726:0
8,333 shares0Common StockSEC:0001209191-21-038779:0
8 of 8 declarations
About O'Brien Thomas M
Thomas M. O'Brien is a Board Member at VirnetX Holding Corp. He contributes to the governance of the company and strategic decision-making. O'Brien is recognized for his expertise in technology and innovation.
