Diem Nguyen is CEO at SIGA TECHNOLOGIES INC (SIGA). They have made 1 open-market trade across 1 company since 2021, most recently 2026-03-13.
CIK 0001814338
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $80K since 2021, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CADL | BUY | 2021-07-29 | 2021-08-02 | $8.00 | $80K | +4.6% | +0.9% | +48.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.