Skip to content
sellWeak10b5-1 plan

Priya Singhal sold $134k of BIIB

Head of Development at BIOGEN INC.. 748 shares at an average of $179.30, traded Feb 2, 2026, filed Feb 3, 2026.

Warning score
0
Value
$134k
748 shares
Holdings after
6,271
-11% from before
From 52-week low
+58%
low $113.38, close $179.09
From 52-week high
-5%
high $187.62, as of Feb 2, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $134k at market
    +11
  • Share of holdings sold
    Sold 11% of holdings
    +5
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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 +6.4%, 3m +7.0%, 6m +17.9%.

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.

BIIBOct 9, 2026 · close 225.71
Since filing Feb 3, 2026: +27.7%SPY +13.7% · excess +14.0%

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 0000875045-26-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jan 30, 2026MOption exercise
Common Stock10b5-1
+1,829$0.00$07,601Feb 3, 2026
Jan 30, 2026FTax withholding
Common Stock10b5-1
-582$179.89$105k7,019Feb 3, 2026
Feb 2, 2026SOpen-market sale
Common Stock10b5-1
-748$179.30$134k6,271Feb 3, 2026
Jan 30, 2026MOption exercise
Restricted Stock Unitderivative10b5-1
-1,829$0.00$00Feb 3, 2026

Related signals

Other insiders at BIOGEN INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
18Weak
BIIBsell10b5-1
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
BIIBsell10b5-1
BIOGEN INC.
Priya Singhal
Head of Development
$532k
2,660 shares
-25%
0Weak
BIIBsell10b5-1
BIOGEN INC.
Priya Singhal
Head of Development
$69k
517 shares
-8%
19Weak
BIIBsell10b5-1
BIOGEN INC.
Rachid Izzar
Head of Global Product Strat.
$300k
2,223 shares
-26%
23Weak
BIIBsell10b5-1
BIOGEN INC.
Priya Singhal
Head of Development
$481k
3,806 shares
-41%
44Moderate
BIIBbuy
BIOGEN INC.
Caroline Dorsa
director
$152k
1,235 shares
+5%
30Weak
BIIBsell10b5-1
BIOGEN INC.
Stephen A Sherwin
director
$1.3M
8,760 shares
-44%
0Weak
BIIBsell10b5-1
BIOGEN INC.
Priya Singhal
Head of Development
$17k
110 shares
-2%
0Weak
BIIBsell10b5-1
BIOGEN INC.
Priya Singhal
Head of Development
$20k
93 shares
-2%

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.

Priya Singhal sold $134k of BIIB | InsiderTell