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sellWeak cluster of 4

Charles W. Newton sold $15k of LYEL

Chief Financial Officer at Lyell Immunopharma, Inc.. 1,453 shares at an average of $10.54, traded Aug 21, 2025, filed Aug 22, 2025.

Warning score
37
Value
$15k
1,453 shares
Holdings after
15,306
-9% from before
From 52-week low
+37%
low $7.80, close $10.65
From 52-week high
-66%
high $31.20, as of Aug 21, 2025

Score components

  • Role
    CFO
    +22
  • Trade size
    $15k at market
    0
  • Share of holdings sold
    Sold 8.7% of holdings
    0
  • Cluster
    4 insiders selling within 14 days
    +15

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 +21.7%, 3m +77.8%, 6m +98.9%.

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.

LYELOct 9, 2026 · close 8.71
Since filing Aug 22, 2025: -19.1%SPY +22.3% · excess -41.3%

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 0001415889-25-022741, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 20, 2025AGrant or award
Common Stock
+8,000$0.00$016,759Aug 22, 2025
Aug 21, 2025SOpen-market sale
Common Stock
-1,453$10.54$15k15,306Aug 22, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
15Weak
LYELsell
Lyell Immunopharma, Inc.
David Shook
Chief Medical Officer
$6,350
500 shares
-2%
30Weak
LYELsell 4
Lyell Immunopharma, Inc.
Veronica Sanchez Bulis
VP, Corporate Controller
$4,103
217 shares
-1%
35Weak
LYELsell 4
Lyell Immunopharma, Inc.
Stephen J. Hill
Chief Operating Officer
$1,684
89 shares
-0%
30Weak
LYELsell 4
Lyell Immunopharma, Inc.
Gary K. Lee
Chief Scientific Officer
$2,460
130 shares
-1%
40Moderate
LYELsell 4
Lyell Immunopharma, Inc.
Lynn Seely
President and CEO
$7,337
388 shares
-1%
15Weak
LYELsell
Lyell Immunopharma, Inc.
David Shook
Chief Medical Officer
$25k
1,977 shares
-9%
58Moderate
LYELbuy 2
Lyell Immunopharma, Inc.
ARCH Venture Partners IX, LLC
owner
$12M
488,090 shares
+52%
58Moderate
LYELbuy 2
Lyell Immunopharma, Inc.
ARCH Venture Fund XIII, L.P.
owner
$12M
488,090 shares
+52%
40Moderate
LYELsell 4
Lyell Immunopharma, Inc.
Stephen J. Hill
Chief Operating Officer
$29k
1,236 shares
-6%
36Weak
LYELsell 4
Lyell Immunopharma, Inc.
Gary K. Lee
Chief Scientific Officer
$39k
1,671 shares
-9%

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.

Charles W. Newton sold $15k of LYEL | InsiderTell