Stephen A Sherwin sold $1.3M of BIIB
director at BIOGEN INC.. 8,760 shares at an average of $150.02, traded Mar 7, 2025, filed Mar 10, 2025.
Score components
- +15RoleDirector
- +25Trade size$1.3M at market
- +10Share of holdings soldSold 44% of holdings
- 0ClusterNo other insider selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -20.1%, 3m -11.0%, 6m -6.2%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001127602-25-008861, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 7, 2025 | SOpen-market sale Common Stock10b5-1 | -8,760 | $150.02 | $1.3M | 11,318 | Mar 10, 2025 |
Related signals
Other insiders at BIOGEN INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 18Weak | BIOGEN INC. | Lloyd Minor director | $240k 1,186 shares | -31% | |
| 10Weak | BIIBbuy BIOGEN INC. | Nicole Murphy Head of Pharm Ops and Tech | $585 3 shares | +0% | |
| 3Weak | BIOGEN INC. | Priya Singhal Head of Development | $532k 2,660 shares | -25% | |
| 0Weak | BIOGEN INC. | Priya Singhal Head of Development | $134k 748 shares | -11% | |
| 0Weak | BIOGEN INC. | Priya Singhal Head of Development | $69k 517 shares | -8% | |
| 19Weak | BIOGEN INC. | Rachid Izzar Head of Global Product Strat. | $300k 2,223 shares | -26% | |
| 23Weak | BIOGEN INC. | Priya Singhal Head of Development | $481k 3,806 shares | -41% | |
| 44Moderate | BIIBbuy BIOGEN INC. | Caroline Dorsa director | $152k 1,235 shares | +5% | |
| 0Weak | BIOGEN INC. | Priya Singhal Head of Development | $17k 110 shares | -2% | |
| 2Weak | BIOGEN INC. | Priya Singhal Head of Development | $58k 262 shares | -5% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.