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sellNotable cluster of 4

Andrew Lo sold $3.8M of BBIO

director at BridgeBio Pharma, Inc.. 100,000 shares at an average of $38.50, traded May 2, 2025, filed May 6, 2025.

Warning score
65
Value
$3.8M
100,000 shares
Holdings after
105,583
-49% from before
From 52-week low
+73%
low $22.35, close $38.57
From 52-week high
0%
high $38.57, as of May 2, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $3.8M at market
    +25
  • Share of holdings sold
    Sold 49% of holdings
    +10
  • 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 +3.8%, 3m +33.2%, 6m +66.1%.

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.

BBIOOct 9, 2026 · close 65.35
Since filing May 6, 2025: +76.9%SPY +41.6% · excess +35.4%

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 0000950170-25-064558, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 2, 2025SOpen-market sale
Common Stockindirect: By Andrew W. Lo and Nancy N. Lo JTWROS
-100,000$38.50$3.8M105,583May 6, 2025

Related signals

Other insiders at BridgeBio Pharma, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
26Weak
BBIOsell10b5-1
BridgeBio Pharma, Inc.
Neil Kumar
Chief Executive Officer
$691k
10,000 shares
-2%
35Weak
BBIOsell10b5-1
BridgeBio Pharma, Inc.
Neil Kumar
Chief Executive Officer
$3.7M
44,980 shares
-16%
6Weak
BBIOsell10b5-1
BridgeBio Pharma, Inc.
Maricel Apuli
Chief Accounting Officer
$160k
2,000 shares
-2%
33Weak
BBIOsell 210b5-1
BridgeBio Pharma, Inc.
Jennifer E. Cook
director
$13M
148,589 shares
-95%
23Weak
BBIOsell 210b5-1
BridgeBio Pharma, Inc.
Andrea Ellis
director
$1.4M
17,167 shares
-43%
13Weak
BBIOsell 210b5-1
BridgeBio Pharma, Inc.
Hannah Valantine
director
$342k
5,004 shares
-35%
33Weak
BBIOsell 210b5-1
BridgeBio Pharma, Inc.
Jennifer E. Cook
director
$2.8M
39,363 shares
-372%
40Moderate
BBIOsell 310b5-1
BridgeBio Pharma, Inc.
Jennifer E. Cook
director
$6.0M
90,240 shares
-93%
43Moderate
BBIOsell 210b5-1
BridgeBio Pharma, Inc.
Neil Kumar
Chief Executive Officer
$5.4M
80,000 shares
-14%
45Moderate
BBIOsell 310b5-1
BridgeBio Pharma, Inc.
Neil Kumar
Chief Executive Officer
$1.8M
26,103 shares
-10%

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.

Andrew Lo sold $3.8M of BBIO | InsiderTell