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sellWeak cluster of 410b5-1 plan

Daniel P Florin sold $46k of LUNG

director at Pulmonx Corp. 23,321 shares at an average of $1.99, traded Dec 8, 2025, filed Dec 9, 2025.

Warning score
21
Value
$46k
23,321 shares
Holdings after
93,910
-20% from before
From 52-week low
+56%
low $1.31, close $2.04
From 52-week high
-78%
high $9.22, as of Dec 8, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $46k at market
    +6
  • Share of holdings sold
    Sold 20% of holdings
    +5
  • Cluster
    4 insiders selling within 14 days
    +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 -9.9%, 3m -23.4%, 6m -34.3%.

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.

LUNGOct 12, 2026 · close 1.80
Since filing Dec 9, 2025: -22.7%SPY +15.1% · excess -37.9%

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 0001402459-25-000005, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 8, 2025SOpen-market sale
Common Stock10b5-1
-23,321$1.99$46k93,910Dec 9, 2025

Related signals

Other insiders at Pulmonx Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
50Moderate
LUNGsell 4
Pulmonx Corp
Glendon E. French III
President and CEO
$95k
41,882 shares
-4%
35Weak
LUNGsell 4
Pulmonx Corp
David Aaron Lehman
General Counsel
$32k
14,334 shares
-4%
30Weak
LUNGsell 4
Pulmonx Corp
Geoffrey Beran Rose
Chief Commercial Officer
$18k
7,879 shares
-2%
35Weak
LUNGsell 4
Pulmonx Corp
Srikanth Radhakrishnan
Chief Science & Techn. Officer
$32k
14,245 shares
-4%
49Moderate
LUNGsell 4
Pulmonx Corp
Glendon E. French III
President and CEO
$87k
56,149 shares
-5%
30Weak
LUNGsell 4
Pulmonx Corp
David Aaron Lehman
GENERAL COUNSEL
$22k
14,594 shares
-4%
30Weak
LUNGsell 4
Pulmonx Corp
Geoffrey Beran Rose
CHIEF COMMERCIAL OFFICER
$12k
8,023 shares
-2%
30Weak
LUNGsell 4
Pulmonx Corp
Srikanth Radhakrishnan
Chief Science &Techn. Officer
$22k
14,497 shares
-4%
50Moderate
LUNGsell 4
Pulmonx Corp
Glendon E. French III
President and CEO
$97k
67,813 shares
-5%
30Weak
LUNGsell 4
Pulmonx Corp
David Aaron Lehman
GENERAL COUNSEL
$17k
12,237 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.

Daniel P Florin sold $46k of LUNG | InsiderTell