Diantha Duvall is Chief Accounting Officer at Bioverativ Inc. (BIVV). They have made 4 open-market trades across 1 company since 2017, most recently 2026-03-20.
CIK 0001696784
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.
0 open-market purchases, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GNCA | SELL | 2022-06-02 | 2022-06-03 | $0.06 | $81 | N/A | N/A | N/A |
| GNCA | SELL | 2022-05-26 | 2022-05-26 | $0.08 | $2K | N/A | N/A | N/A |
| GNCA | SELL | 2022-04-04 | 2022-04-05 | $1.25 | $1K | -66.5% | -81.8% | N/A |
| GNCA | SELL | 2022-03-16 | 2022-03-17 | $1.10 | $3K | +7.6% | -62.3% | N/A |
| BIVV | SELL · 10b5-1 | 2017-06-28 | 2017-06-29 | $60.47 | $49K | +2.8% | +2.8% | -5.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.