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sellWeak cluster of 310b5-1 plan

Adam Elsesser sold $4.3M of PEN

CEO at Penumbra Inc. 15,800 shares at an average of $269.65, traded Sep 3, 2025, filed Sep 4, 2025.

Warning score
30
Value
$4.3M
15,800 shares
Holdings after
182,460
-8% from before
From 52-week low
+44%
low $186.89, close $269.71
From 52-week high
-11%
high $303.76, as of Sep 3, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $4.3M at market
    +25
  • Share of holdings sold
    Sold 8.0% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15
  • 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 -8.5%, 3m +5.4%, 6m +21.8%.

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.

PENOct 12, 2026 · close 320.96
Since filing Sep 4, 2025: +14.7%SPY +21.5% · excess -6.7%

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 0001651323-25-000023, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 3, 2025MOption exercise
Common Stock10b5-1
+27,980$30.00$839k198,260Sep 4, 2025
Sep 3, 2025SOpen-market sale
Common Stock10b5-1
-2,351$268.41$631k195,909Sep 4, 2025
Sep 3, 2025SOpen-market sale
Common Stock10b5-1
-4,674$269.26$1.3M191,235Sep 4, 2025
Sep 3, 2025SOpen-market sale
Common Stock10b5-1
-7,575$270.09$2.0M183,660Sep 4, 2025
Sep 3, 2025SOpen-market sale
Common Stock10b5-1
-1,200$270.81$325k182,460Sep 4, 2025
Sep 3, 2025MOption exercise
Stock Option (right to buy)derivative10b5-1
-27,980$0.00$00Sep 4, 2025

Related signals

Other insiders at Penumbra Inc and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
1Weak
PENsell10b5-1
Penumbra Inc
Harpreet Grewal
director
$33k
100 shares
-1%
30Weak
PENsell10b5-1
Penumbra Inc
Maggie Yuen
Chief Financial Officer
$832k
2,432 shares
-12%
10Weak
PENsell 210b5-1
Penumbra Inc
Harpreet Grewal
director
$58k
186 shares
-2%
30Weak
PENsell 210b5-1
Penumbra Inc
Thomas Wilder
director
$58k
186 shares
-100%
35Weak
PENsell 310b5-1
Penumbra Inc
Arani Bose
director
$4.6M
15,000 shares
-5%
19Weak
PENsell 310b5-1
Penumbra Inc
Johanna Roberts
EVP, Gen. Counsel & Secretary
$90k
300 shares
-0%
15Weak
PENsell 310b5-1
Penumbra Inc
Harpreet Grewal
director
$29k
100 shares
-1%
22Weak
PENsell 310b5-1
Penumbra Inc
Johanna Roberts
EVP, Gen. Counsel & Secretary
$177k
600 shares
-1%
35Weak
PENsell 310b5-1
Penumbra Inc
Arani Bose
director
$2.3M
7,500 shares
-3%
29Weak
PENsell 310b5-1
Penumbra Inc
Johanna Roberts
EVP, Gen. Counsel & Secretary
$540k
1,800 shares
-3%

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.

Adam Elsesser sold $4.3M of PEN | InsiderTell