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sellWeak cluster of 310b5-1 plan

Mark Brosius sold $23k of ISRG

EVP & Chief Mfg and Supply Cha at INTUITIVE SURGICAL INC. 54 shares at an average of $434.52, traded May 18, 2026, filed May 20, 2026.

Warning score
10
Value
$23k
54 shares
Holdings after
1,559
-3% from before
From 52-week low
+5%
low $420.06, close $439.92
From 52-week high
-26%
high $592.85, as of May 18, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $23k at market
    0
  • Share of holdings sold
    Sold 3.3% of holdings
    0
  • Cluster
    3 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 -9.4%, 3m -11.4%, 6m -.

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.

ISRGOct 9, 2026 · close 423.96
Since filing May 20, 2026: -5.6%SPY +5.6% · excess -11.1%

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 0002010300-26-000015, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 18, 2026SOpen-market sale
Common Stock10b5-1
-18$422.47$7,6041,595May 20, 2026
May 19, 2026SOpen-market sale
Common Stock10b5-1
-18$440.70$7,9331,577May 20, 2026
May 20, 2026SOpen-market sale
Common Stock10b5-1
-18$440.38$7,9271,559May 20, 2026

Related signals

Other insiders at INTUITIVE SURGICAL INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
24Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Fredrik Widman
VP Corporate Controller
$408k
1,089 shares
-69%
3Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$17k
48 shares
-6%
3Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$25k
69 shares
-8%
10Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$20k
48 shares
-3%
15Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$29k
69 shares
-5%
21Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Gary Loeb
EVP & Chief Legal and Complian
$170k
400 shares
-7%
30Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Iman Jeddi
SVP & GM da Vinci Platforms &
$2.4M
5,625 shares
-47%
10Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$16k
36 shares
-2%
22Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Gary Loeb
EVP & Chief Legal and Complian
$179k
400 shares
-6%
37Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Amy L Ladd
director
$292k
619 shares
-84%

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.

Mark Brosius sold $23k of ISRG | InsiderTell