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sellWeak

David Shook sold $6,350 of LYEL

Chief Medical Officer at Lyell Immunopharma, Inc.. 500 shares at an average of $12.70, traded Sep 10, 2026, filed Sep 10, 2026.

Warning score
15
Value
$6,350
500 shares
Holdings after
20,423
-2% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Officer
    +15
  • Trade size
    $6k at market
    0
  • Share of holdings sold
    Sold 2.4% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0

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.

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.

LYELOct 9, 2026 · close 8.71
Since filing Sep 10, 2026: -28.6%SPY +3.0% · excess -31.6%

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 0001959742-26-000003, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 10, 2026SOpen-market sale
Common Stock
-500$12.70$6,35020,42332 d ago

Related signals

Other insiders at Lyell Immunopharma, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
31Weak
LYELbuy
Lyell Immunopharma, Inc.
Otis W Brawley
director
$20k
35,640 shares
-
31Weak
LYELbuy
Lyell Immunopharma, Inc.
Richard Klausner
director
$95k
158,000 shares
+23%

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.

David Shook sold $6,350 of LYEL | InsiderTell