Priya Singhal is Head of Development at BIOGEN INC. (BIIB). They have made 16 open-market trades across 1 company since 2023, most recently 2026-02-09.
CIK 0001769608
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 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BIIB | 7,432 | $1.9M |
Shares reported on the most recent Form 4, priced at the 2026-02-10 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BIIB | SELL | 2026-02-09 | 2026-02-10 | $199.83 | $532K | +4.2% | -1.8% | +5.1% |
| BIIB | SELL | 2026-02-02 | 2026-02-03 | $179.30 | $134K | +10.9% | +6.1% | +5.6% |
| BIIB | SELL | 2025-09-02 | 2025-09-02 | $133.55 | $138K | +3.8% | +11.2% | +27.4% |
| BIIB | SELL | 2025-05-19 | 2025-05-20 | $126.25 | $961K | +1.1% | -2.1% | +4.8% |
| BIIB | SELL | 2024-12-09 | 2024-12-09 | $157.21 | $17K | -6.3% | -4.2% | -4.2% |
| BIIB | SELL | 2024-09-03 | 2024-09-05 | $204.22 | $176K | -2.1% | -9.5% | -20.5% |
| BIIB | SELL | 2024-04-02 | 2024-04-03 | $213.09 | $20K | -5.0% | +5.0% | +10.4% |
| BIIB | SELL | 2024-02-22 | 2024-02-26 | $221.23 | $116K | -1.9% | -3.3% | -2.2% |
| BIIB | SELL | 2024-02-16 | 2024-02-21 | $221.49 | $24K | -0.1% | -1.4% | +2.9% |
| BIIB | SELL | 2024-02-12 | 2024-02-13 | $239.45 | $201K | -1.5% | -3.3% | -0.7% |
| BIIB | SELL | 2024-02-02 | 2024-02-05 | $245.93 | $312K | -7.3% | -9.7% | -8.1% |
| BIIB | SELL | 2023-12-11 | 2023-12-12 | $248.00 | $27K | +3.5% | -0.8% | -7.7% |
| BIIB | SELL | 2023-09-05 | 2023-09-06 | $269.43 | $232K | -3.8% | +0.0% | -12.8% |
| BIIB | SELL | 2023-07-03 | 2023-07-05 | $282.87 | $23K | -2.6% | -6.0% | -12.1% |
| BIIB | SELL | 2023-04-04 | 2023-04-06 | $277.11 | $25K | +2.4% | +10.2% | +0.2% |
| BIIB | SELL | 2023-03-28 | 2023-03-30 | $270.06 | $307K | +3.8% | +13.0% | +3.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.