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sellWeak cluster of 210b5-1 plan

Mark Brosius sold $630k of ISRG

SVP & Chief Mfg and Supply Cha at INTUITIVE SURGICAL INC. 1,293 shares at an average of $487.61, traded Mar 6, 2026, filed Mar 10, 2026.

Warning score
33
Value
$630k
1,293 shares
Holdings after
1,613
-44% from before
From 52-week low
+14%
low $429.59, close $490.16
From 52-week high
-17%
high $592.85, as of Mar 6, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $630k at market
    +20
  • Share of holdings sold
    Sold 44% of holdings
    +10
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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.

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 Mar 10, 2026: -12.7%SPY +15.9% · excess -28.6%

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 0002010300-26-000013, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 6, 2026SOpen-market sale
Common Stock10b5-1
-648$490.19$318k2,258Mar 10, 2026
Mar 9, 2026SOpen-market sale
Common Stock10b5-1
-645$485.01$313k1,613Mar 10, 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%
15Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$52k
105 shares
-100%
48Moderate
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Mark Brosius
SVP & Chief Mfg and Supply Cha
$1.8M
3,658 shares
-56%
33Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$2.4M
4,853 shares
-92%
33Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$1.2M
2,345 shares
-85%
21Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$260k
526 shares
-56%
16Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$66k
126 shares
-100%
18Weak
ISRGsell 210b5-1
INTUITIVE SURGICAL INC
Myriam Curet
EVP & Chief Medical Officer
$123k
230 shares
-219%

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 $630k of ISRG | InsiderTell