O'BRIEN THOMAS M (CIK 1241556) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-25). Recent activity: Buy VHC (7,500 shares), Buy VHC (625 shares), Buy VHC (7,500 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-25 | VirnetX Holding Corp (VHC) | Director | Buy | 7,500 | $0 |
| 2025-12-03 | VirnetX Holding Corp (VHC) | Director | Buy | 625 | $6,312 |
| 2025-06-16 | VirnetX Holding Corp (VHC) | Director | Buy | 7,500 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-06-25