O'Brien Thomas M
- SEC CIK
- 0001241556
No open-market purchases or sales filed in the past year.
Current role at each company
- VHC VirnetX Holding CorpDirectoras of Jun 25, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists O'Brien Thomas M as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 19, 2023 (view filing)4:06 PM ET | May 18 | 1 day | O'Brien Thomas MDirector | PPurchase | +50.0K | $0.42 | +$21.0K | +26.5%238.3K after |