Mark Brosius: insider trades
Every open market trade Mark Brosius has filed with the SEC, when each filing appeared, and how the buys did against the S&P 500 once the filing was public.
Key Facts
- Mark Brosius is listed as EVP & Chief Mfg and Supply Cha at ISRG.
- Between 2026-03-10 (10 March 2026) and 2026-09-11 (11 September 2026) Mark Brosius filed 0 open market buys worth $0 and 26 open market sales worth $960K.
- None of Mark Brosius's buys has matured 90 days yet, so there is no return to report.
- Data as of 2026-09-29 (29 September 2026).
Would copying Mark Brosius have paid?
prices as of 2026-09-28The result. None of Mark Brosius's buys has matured 90 days yet, so there is no return to report.
| Days after entry | Scored buys | Avg vs S&P | Beat S&P | Entry months | t statistic | Reading |
|---|---|---|---|---|---|---|
| 30 days | 0 | n/a | n/a | n/a | n/a | too few trades to tell |
| 90 days | 0 | n/a | n/a | n/a | n/a | too few trades to tell |
| 180 days | 0 | n/a | n/a | n/a | n/a | too few trades to tell |
A return curve needs at least 10 scored buys. Mark Brosius does not have enough yet.
Stocks traded
Every open market trade
as of 2026-09-29| Filed | Stock | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 11 Sep 2026 | ISRG | sell | 25 | $365.79 | $9.1K | n/a |
| 11 Sep 2026 | ISRG | sell | 23 | $347.66 | $8.0K | n/a |
| 9 Sep 2026 | ISRG | sell | 23 | $350.20 | $8.1K | n/a |
| 9 Sep 2026 | ISRG | sell | 46 | $361.23 | $16.6K | n/a |
| 21 Aug 2026 | ISRG | sell | 77 | $375.57 | $28.9K | n/a |
| 21 Aug 2026 | ISRG | sell | 77 | $396.37 | $30.5K | n/a |
| 19 Aug 2026 | ISRG | sell | 77 | $394.00 | $30.3K | n/a |
| 19 Aug 2026 | ISRG | sell | 77 | $394.26 | $30.4K | n/a |
| 19 Aug 2026 | ISRG | sell | 77 | $390.67 | $30.1K | n/a |
| 31 Jul 2026 | ISRG | sell | 28 | $351.00 | $9.8K | n/a |
| 31 Jul 2026 | ISRG | sell | 28 | $346.83 | $9.7K | n/a |
| 29 Jul 2026 | ISRG | sell | 28 | $344.00 | $9.6K | n/a |
| 29 Jul 2026 | ISRG | sell | 28 | $365.58 | $10.2K | n/a |
| 29 Jul 2026 | ISRG | sell | 28 | $360.21 | $10.1K | n/a |
| 12 Jun 2026 | ISRG | sell | 23 | $412.16 | $9.5K | n/a |
| 12 Jun 2026 | ISRG | sell | 25 | $414.13 | $10.4K | n/a |
| 10 Jun 2026 | ISRG | sell | 23 | $421.13 | $9.7K | n/a |
| 10 Jun 2026 | ISRG | sell | 23 | $424.14 | $9.8K | n/a |
| 10 Jun 2026 | ISRG | sell | 23 | $420.12 | $9.7K | n/a |
| 22 May 2026 | ISRG | sell | 18 | $446.04 | $8.0K | n/a |
| 22 May 2026 | ISRG | sell | 18 | $439.80 | $7.9K | n/a |
| 20 May 2026 | ISRG | sell | 18 | $440.70 | $7.9K | n/a |
| 20 May 2026 | ISRG | sell | 18 | $440.38 | $7.9K | n/a |
| 20 May 2026 | ISRG | sell | 18 | $422.47 | $7.6K | n/a |
| 10 Mar 2026 | ISRG | sell | 648 | $490.19 | $318K | n/a |
| 10 Mar 2026 | ISRG | sell | 645 | $485.01 | $313K | n/a |
Nothing matches that search.
Insider sales are shown but not scored, because they are often planned for tax or diversification reasons.
Related pages
Frequently asked questions
What has Mark Brosius bought and sold?
Between 2026-03-10 (10 March 2026) and 2026-09-11 (11 September 2026) Mark Brosius filed 0 open market buys worth $0 and 26 open market sales worth $960K.
Did Mark Brosius's buys beat the market?
None of Mark Brosius's buys has matured 90 days yet, so there is no return to report. Insider sales are not scored because they are often planned for tax or diversification reasons.
Sources: Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.