Mark Brosius is VP at INTUITIVE SURGICAL INC (ISRG). They have made 1 open-market trade across 1 company since 2024, most recently 2026-09-11.
CIK 0002010300
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ISRG | 764 | $326K |
| ISGR | 295 | — |
| Total | $326K |
Shares reported on the most recent Form 4, priced at the 2026-09-11 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ISRG | SELL · 10b5-1 | 2026-09-10 | 2026-09-11 | $357.10 | $17K | +5.8% | +13.6% | — |
| ISRG | SELL · 10b5-1 | 2026-09-08 | 2026-09-09 | $357.55 | $25K | +15.3% | +21.7% | — |
| ISRG | SELL · 10b5-1 | 2026-08-20 | 2026-08-21 | $385.97 | $59K | -2.4% | +5.5% | — |
| ISRG | SELL · 10b5-1 | 2026-08-17 | 2026-08-19 | $392.98 | $91K | -4.9% | -0.9% | — |
| ISRG | SELL · 10b5-1 | 2026-07-30 | 2026-07-31 | $348.92 | $20K | +10.7% | +4.0% | — |
| ISRG | SELL · 10b5-1 | 2026-07-27 | 2026-07-29 | $356.60 | $30K | +13.0% | +7.1% | — |
| ISRG | SELL · 10b5-1 | 2026-06-11 | 2026-06-12 | $413.19 | $20K | -3.6% | -1.8% | -13.0% |
| ISRG | SELL · 10b5-1 | 2026-06-08 | 2026-06-10 | $421.80 | $29K | -2.4% | -1.5% | -15.2% |
| ISRG | SELL · 10b5-1 | 2026-05-21 | 2026-05-22 | $442.92 | $16K | -4.6% | -8.2% | -14.7% |
| ISRG | SELL · 10b5-1 | 2026-05-18 | 2026-05-20 | $434.52 | $23K | -9.8% | -9.7% | -12.4% |
| ISRG | SELL · 10b5-1 | 2026-03-06 | 2026-03-10 | $487.61 | $630K | -2.3% | -7.0% | -14.4% |
| ISRG | SELL | 2026-03-03 | 2026-03-05 | $496.19 | $1.8M | -1.5% | -7.7% | -16.9% |
| ISRG | SELL · 10b5-1 | 2025-12-15 | 2025-12-17 | $548.49 | $509K | +2.8% | -4.0% | -13.4% |
| ISRG | SELL · 10b5-1 | 2025-12-12 | 2025-12-17 | $547.36 | $342K | +2.8% | -4.0% | -13.4% |
| ISRG | SELL · 10b5-1 | 2025-06-05 | 2025-06-06 | $561.91 | $484K | -4.1% | +0.6% | -14.5% |
| ISRG | SELL · 10b5-1 | 2025-06-02 | 2025-06-04 | $550.60 | $710K | -7.4% | -4.6% | -16.3% |
| ISRG | SELL · 10b5-1 | 2025-05-15 | 2025-05-16 | $561.81 | $24K | +0.3% | -6.4% | -13.9% |
| ISRG | SELL · 10b5-1 | 2025-05-12 | 2025-05-14 | $558.88 | $37K | -1.6% | -8.4% | -14.5% |
| ISRG | SELL · 10b5-1 | 2025-03-07 | 2025-03-07 | $533.18 | $521K | -2.4% | -8.0% | +10.7% |
| ISRG | SELL · 10b5-1 | 2025-03-04 | 2025-03-06 | $558.94 | $1.6M | -9.2% | -13.0% | +4.6% |
| ISRG | SELL · 10b5-1 | 2025-03-03 | 2025-03-03 | $573.78 | $565K | -15.4% | -10.0% | -1.8% |
| ISRG | SELL · 10b5-1 | 2024-10-25 | 2024-10-28 | $513.83 | $23K | +3.5% | +6.3% | +13.2% |
| ISRG | SELL · 10b5-1 | 2024-10-22 | 2024-10-24 | $514.95 | $1.1M | +0.2% | +4.4% | +18.8% |
| ISGR | SELL · 10b5-1 | 2024-09-12 | 2024-09-16 | $491.91 | $2.1M | N/A | N/A | N/A |
| ISRG | SELL · 10b5-1 | 2024-05-16 | 2024-05-17 | $397.73 | $95K | +1.2% | +7.9% | +20.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.