Skip to content
sellWeak cluster of 310b5-1 plan

Mark Brosius sold $30k of ISRG

EVP & Chief Mfg and Supply Cha at INTUITIVE SURGICAL INC. 84 shares at an average of $356.60, traded Jul 27, 2026, filed Jul 29, 2026.

Warning score
15
Value
$30k
84 shares
Holdings after
1,322
-6% from before
From 52-week low
+7%
low $332.02, close $356.83
From 52-week high
-40%
high $592.85, as of Jul 27, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $30k at market
    +5
  • Share of holdings sold
    Sold 6.0% 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.

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 13, 2026 · close 422.06
Since filing Jul 29, 2026: +19.5%SPY +6.9% · excess +12.6%

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 0002010300-26-000023, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jul 27, 2026SOpen-market sale
Common Stock10b5-1
-28$344.00$9,6321,378Jul 29, 2026
Jul 28, 2026SOpen-market sale
Common Stock10b5-1
-28$365.58$10k1,350Jul 29, 2026
Jul 29, 2026SOpen-market sale
Common Stock10b5-1
-28$360.21$10k1,322Jul 29, 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%
22Weak
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$59k
154 shares
-15%
24Weak
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$91k
231 shares
-18%
35Weak
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Gary S Guthart
President & CEO
$4.0M
10,000 shares
-1%
42Moderate
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Amy L Ladd
director
$180k
472 shares
-73%
21Weak
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Gary Loeb
EVP & Chief Legal and Complian
$152k
400 shares
-7%
10Weak
ISRGsell 410b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$20k
56 shares
-4%
10Weak
ISRGsell 310b5-1
INTUITIVE SURGICAL INC
Mark Brosius
EVP & Chief Mfg and Supply Cha
$20k
48 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.

Mark Brosius sold $30k of ISRG | InsiderTell